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Page 1: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

-

VER4.1

Applications manual for CHS series

Page 2: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Applications Manual

1. Ordering information2. Pin configuration / External view

Pin configurationExternal view

3. Do's and Don'ts for moduleIsolationMounting methodStress onto the pinsCleaningSolderingSafety StandardAutomatic Mounting (CHS Series : option "-S")Storage method (CHS Series : option "-S")Stress to the product

4. Connection method for standard useConnection for standard useWiring input pinWiring outpin pin

5. OverviewCHS60 CHS80CHS120CHS200 CHS300CHS380CHS400CHS500CHS700DeratingInput derating

6. Adjustable voltage rangeOutput voltage adjusting method by external potentimeterOutput voltage decreasing by external resistorOutput voltage incresing by external resistorInput voltage derating

7. Protect circuitOvercurrent protectionOvervoltage protectionThermal protection

8. Remote ON/OFF9. Remote sensing

When the remote sensing function is not in useWhen the remote sensing function is in use

10. Series operation / Parallel operation / Redunda ncy operationSerise operationParallel operation (CHS400 / CHS500 Series : option "-P")Redundancy operation

11. SMDtype(option "-S")package information

3.6 3-5

3.9

3-5

3-53.73.8

3-5

3-1

3-3

3-4

3.2 3-13.1

3.33.4 3-3

3.5

4-1

4-1

5-1

5-16

4-1

CHS series

Page

2-1

3-1

1-1

2.1 2-1

2.2 2-3

5-37

4.1

4.3

5.5

5.25.3

5-19

4-3

5-4

5-7

4.2

5.1

5.4

5.65.7

5-1

6.1 6-1

5-525.85.9 5-54

5.11 5-795.10

6-1

5-55

11-1

10-1

6.2 6-2

6-2

10-110.1

7.3

7-1

7.1 7-1

7.2 7-1

6.36-3

7-1

6.4

5-34

8-1

10-1

9-1

10.2

9-1

9-1

10.3

9.29.1

10-2

Page 3: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

CHS 200 48 05 -

  e ie a e

CHS : CHS Series

 Output Power

 Input Voltage

 Output Voltage

●● ●●

CHS 1-1

32V - - - - - ● ● -48V - - - - - ● ● -

● ●●●-●

●●●

28V - - - - - ● ● -

15V

CHS380

●-

●-

-3.3V5V

●●

●48●

● ●-

48

●-

10V12V ● ●

500500W

●-

-●-

--

300300W

380380W

36V-76V

24

-●

CHS300

2418V-36V

400400W

-

6060W

80

-

80W120

120W200

200W

- -

48

CHS60 CHS80 CHS200CHS12024

700700W

--

----

CHS500

---●

CHS700

---●---

24V - - ● ● - ● ● --

●●●

CHS40024 48- -- -- ●

2.1 Pin configuration1. Ordering information

Page 4: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

 Option

B : Baseplate option with mounting hole M3(※ without mounting hole M3)L2: Pin length 5.3mmL5: 5pins type (+S,-S,TRM less) (※2 +S,-S,TRM and outside +Vo,-Vo less)L7: 7pins type (+S,-S,TRM less)L8: 8pins type (outside +Vo,-Vo less)P : Parallel operation (5pins :without +S,-S and TRM)R : with remote ON/OFF positive logic controlS : SMDU : Shut down in protection circuit workingBC : Baseplate and case option with mounting hole M3(※3without mounting hole M3)I : with the PMBus interface(only CHS3004810/4812, CHS4004812, CHS5004812)

CHS60 CHS80CHS120

CHS200CHS300

CHS380

B - -

CHS700

●※ ●※ ● ● ● ●

CHS40024 48

● ●● ●

● ●●

● ● ● ●

24 48 24 48CHS500

L8 - -

L2 - - ● ● ● ● ● ● ● ●L5 - -L7 - - - - - - - - - - - ●

- - - - --

-

●● ● ●※●

S ● ● ● ● -

●-P - - - - - - - - ● ●

- - -

R ● ● ● ● ● ● ● ● ● ● ● ●- - - - -- -

● ● ● ●●BC - - ●※ - - - -● ● ●U ● ● ● ● ●

● - - -I - - - - - - ● - - ● ● -

CHS 1-2

Page 5: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

2.1 Pin configuration

Fig.2.1.1

Pin connection

for CHS60

(bottom view)

Fig.2.1.2

Pin connection

for CHS80

(bottom view)

Fig.2.1.3

Pin connection

for CHS120

(bottom view)

Fig.2.1.4

Pin connection

for CHS200

(bottom view)

CHS 2-1

2.1 Pin configuration2. Pin configuration/ External view

Page 6: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Fig.2.1.5

Pin connection

for CHS300

(bottom view)

Fig.2.1.6

Pin connection

for CHS380

(bottom view)

Fig.2.1.7

Pin connection

for CHS400 / 500

(bottom view)

Fig.2.1.8

Pin connection

for CHS700

(bottom view)

CHS 2-2

Page 7: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Table.2.1.1

Pin connection and

function of CHS

2.2 External view

Fig.2.2.1

External view

for CHS60

CHS 2-3

(option "-S")

Page 8: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Fig.2.2.2

External view

for CHS80

CHS 2-4

(option "-S")

Page 9: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Fig.2.2.3

External view

for CHS120

CHS 2-5

(option "-S")

Page 10: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

CHS 2-6

(option "-B")

(option "-L5")

Page 11: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Fig.2.2.4

External view

for CHS200

CHS 2-7

(option "-B")

(option "-L5")

Page 12: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Fig.2.2.5

External view

for CHS300

CHS 2-8

(option "-B")

(option "-BC")

(option "-L5")

Page 13: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Fig.2.2.6

External view

for CHS380

CHS 2-9

(option "-B")

(option "-L5")

Page 14: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Fig.2.2.7

External view

for CHS400 / CHS500

CHS 2-10

(option "-B")

(option "-BC")

Page 15: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

CHS 2-11

(option "-L5")(option "-P")4.

Page 16: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Fig.2.2.8

External view

for CHS700

CHS 2-12

Page 17: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

CHS 2-13

Page 18: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

3.1 Isolation

For a receiving inspection, such as Hi-Pot test, gradually increase(decrease) the voltagefor a start (shut down). Avoid using Hi-Pot tester with the timer because it may generate voltage a few times higher than the applied voltage, at ON/OFF of a timer.

3.2 Mounting method

The unit can be mounted in any direction. When two or more power supplies are used side by side, position them with proper intervals to allow enough air ventilation. The temperature around each power supply should not exceed the temperature range shown in derating curve.Avoid placing the DC input line pattern layout underneath the unit, it will increase the lineconducted noise. Make sure to leave an ample distance between the line pattern layout and the unit. Also avoid placing the DC output line pattern underneath the unit because it may increase the output noise. Lay out the pattern away from the unit.Avoid placing the signal line pattern layout underneath the unit, this power supply might become unstable.Lay out the pattern away from the unit.Avoid placing pattern layout in hatched area in Fig.3.2.1 to insulate between pattern and power supply.

Fig.3.2.1

Prohibition area of

Pattern layout(top view)

Dimension (mm)

(a) CHS60 (b) CHS80

CHS 3-1

(c) CHS120

2.1 Pin configuration3. Do's and Don't for module

Page 19: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

CHS 3-2

(f) CHS400/CHS500

(e) CHS300/380

(d) CHS200

(g) CHS700

Page 20: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

3.3 Stress onto the pins

When too much stress is applied to the pins of the power supply, the internal connectionmay be weakened.As shown in Fig.3.3.1, avoid applying stress of more than 19.6N(2kgf) on the pinshorizontally and more than 39.2N (4kgf) vertically.

The pins are soldered on PWB internally, therefore, do not pull or bend them withabnormal forces.

Fix the unit on PCB (using silicone rubber or fixing fittings) to reduce the stress onto the pins.

The base plate at Option"B" and "BC" is attached by glue.When fixed to cabinet with screw, fix the power module before soldering the input and output pins to prevent the power module being damaged.

Fig.3.3.1

Stress to the pins

3.4 Cleaning

When cleaning is necessary, clean under the following conditions.Method : Varnishing, ultrasonic wave and vaporCleaning agents : IPA (Solvent type)Total time : 2 minutes or less

Do not apply pressure to the lead and name plate with a brush or scratch it during thecleaning.

After cleaning, dry them enough.

CHS 3-3

Page 21: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

3.5 Soldering

(1) Flow Soldering :260℃ 15 seconds or less(2) Soldering Iron :maximum 450℃ 5 seconds or less(3) Reflow Soldering (option "-S")

■ Fig.3.5.1 shows conditions for the reflow soldering for option "-S" of CHS series.Please make sure that the temperatures of pin terminals +VIN and -VOUT shown in Fig.3.5.1 do not exceed the temperatures shown in Fig.3.5.2.

If time or temperature of the reflow soldering goes beyond the conditions, reliability of internal components may be compromised.Please use the unit under the recommended reflow conditions.

Fig.3.5.1

Temperature Measuring

Points when Setting Reflow

Soldering Conditions

Fig.3.5.2

Recommend Reflow

Soldering Conditions

CHS 3-4

(a) CHS60

(b) CHS80

(c) CHS120

Page 22: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

● Notes to use option "-S"

Solder iron or other similar methods are not recommneded soldering method foroption "-S" because it may not be able to retain connectioin reliability between the PCB and the Pins. Solder reflow is the acceptable mounting system for the option.Option "-S" is not reusable product after soldered on any application PCB.

3.6 Safety standard

To apply for safety standard approval using this power supply, the following conditionsmust be met.

● This unit must be used as a component of the end-use equipment.● The equipment must contain basic inslulation between input and output.

If double or reinforced insulation is required, it has to be provided by the end-use equipment in accordance with the final build-in condition.

● Safety approved fuse must be externally installed on input side.

3.7 Automatic Mounting (CHS series : option "-S")

To mount CHS series automatically, use the coil area near the center of the PCB as anadsorption point. Please see the External View for details of the adsorption point.If the bottom dead point of a suction nozzle is too low when mounting excessive force isapplied to the coil, it could cause damage. Please mount carefully.

3.8 Storage method (CHS series : option "-S")

To stock unpacked products in your inventory, it is recommended to keep them undercontrolled condition, 5-30℃, 60%RH and use them within a year.24-hour baking is recommended at 125℃, if unpacked products were kept underuncontrolled condition, which is 30℃, 60%RH or higher.Original trays are not heat-resistant. Please move them to heat-resistant trays in preparationto bake.To check moisture condition in the pack. Silica gel pacet has some moisture condition indicator particles.Indicated blue means good. Pink means alarm to bake it.Notification. The tray will be deformed and the power supply might be damaged,if the vacuum pressure is too much to reseal.

3.9 Stress to the product

CHS series transformer core and choke coil are attached by glue.Thres is a possibility that the core will be removed and power supply will be damaged when they receive stress by the fall or somekind of stress.The base plate at Option"B" and "BC" is attached by glue.There is a possibility that the base plate will be removed and power supply will be damagedwhen they receive stress by the fall or some kind of stress.

CHS 3-5

Page 23: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

4.1 Connection for standard use

In order to use the power supply, it is necessary to wire as shown in Fig.4.1.1Short the following pins to turn on the power supply.-VIN ⇔ RC, +VOUT ⇔ +S, -VOUT ⇔ -SThe CHS series handle only the DC input.Avoid applying AC input directly.It will damage the power supply.

Fig.4.1.1

Connection for

standard use of CHS

4.2 Wiring input pin

(1) External fuseFuse is not built-in on input side. In order to protect the unit, install the normal-blow type fuse on input side.When the input voltage from a front end unit is supplied to multiple units, install thenormal-blow type fuse in each unit.

Table.4.2.1

Recommended fuse

(Normal-blow type)

CHS 4-1

4. Connection method for standard use2.1 Pin configuration4. Connection method for standard use

Page 24: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

(2) External capacitor on the input sideInstall an external capacitor Cin, between +VIN and -VIN input pins for low line-noiseand for stable operation of the power supply.

Table.4.2.2

Recommended

external input capacitor

(Ceramic)

Capacitance Refer to Table.4.2.2Ta = -20 to +85℃ Electrolytic or Ceramic capacitorTa = -40 to +85℃ Ceramic capacitorCin is within 50mm for pins. Make sure that ripple current of Cin is less than its rating.

(3) Recommendation for noise-filterInstall an external input filter as shown in Fig.4.2.1 in order to reduce conducted noise.Cin is shown in Table.4.2.2

Fig.4.2.1

Example of

recommended external

input filter

(4) Reverse input voltage protectionAvoid the reverse polarity input voltage. It will damage the power supply.It is possible to protect the unit from the reverse input voltage by installing an externaldiode as shown in Fig.4.2.2.

Fig.4.2.2

Reserse input voltage

protection

CHS 4-2

+VIN

DCIN

-VIN

Page 25: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

4.3 Wiring output pin

When the CHS series supplies the pulse current for the pulse load, please installa capacitor Co between +VOUT and -VOUT pins.Recommended capacitance of Co is shown in Table 4.3.1, 4.3.2.If output current decreases rapidly, output voltage rises transiently and the overvoltageprotection circuit may operate.In this case, please install a capacitor Co.Select a high frequency type capacitor. Output ripple and startup waveformmay be influenced by ESR-ESL of the capacitor and the wiring impedance.Make sure that ripple current of Co is than its rating.

Table.4.3.1

Recommended capacitance Co

(CHS60, CHS80, CHS120,

CHS200, CHS30024, CHS380)

Table.4.3.2

Recommended capacitance Co

(CHS30048, CHS40024,

CHS40048, CHS500, CHS700)

Ripple and Ripple Noise are measured, as shown in the Fig.4.3.1.Cin is shown in Table 4.2.2.

Fig.4.3.1

Measuring method of

Ripple and Ripple Noise

CHS 4-3

Page 26: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.1 CHS60

5.1.1 CHS60483R3

Fig.5.1.1

Overview of

CHS60483R3 at 25℃

CHS 5-1

Out

put

Vol

tage

[V

]

Load Current [A]

3.24

3.26

3.28

3.30

3.32

3.34

3.36

3.38

0 4 8 12 16 20

Out

put

Vol

tage

[V

]

Input Voltage [V]

3.24

3.26

3.28

3.30

3.32

3.34

3.36

3.38

20 40 60 80

Pow

er D

issi

patio

n [W

]

Load Current [A]

0

2

4

6

8

10

0 4 8 12 16 20

Eff

icie

ncy

[%]

Load Current [A]

50

60

70

80

90

100

0 4 8 12 16 20

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(9A)→Load 100%(18A)/50usVin 48V,Vout 3.3V

(f) Dynamic Load ResponseLoad 100%(18A)→Load 50%(9A)/50usVin 48V,Vout 3.3V

100mV/div400usec/div

100mV/div400usec/div

Input Volt.Input Volt.Input Volt.

36V48V

76V

Load 50%Load 100%

Input Volt.

Input Volt.

Input Volt.

48V

76V

36V

5. Overview

Input Volt.Input Volt.Input Volt.

36V48V

76V

2.1 Pin configuration5. Overview

Page 27: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.1.2 CHS604805

Fig.5.1.2

Overview of

CHS604805 at 25℃

CHS 5-2

Load Current [A]

Out

put

Vol

tage

[V

]

4.92

4.94

4.96

4.98

5.00

5.02

5.04

5.06

0 4 8 12

Input Voltage [V]

Out

put

Vol

tage

[V

]

4.92

4.94

4.96

4.98

5.00

5.02

5.04

5.06

20 40 60 80

Pow

er D

issi

patio

n [

W]

Load Current [A]

0

2

4

6

8

10

0 4 8 12

Load Current [A]

Eff

icie

ncy

[%]

50

60

70

80

90

100

0 4 8 12

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(6A)→Load 100%(12A)/50usVin 48V,Vout 5.0V

(f) Dynamic Load ResponseLoad 100%(12A)→Load 50%(6A)/50usVin 48V,Vout 5.0V

200mV/div400usec/div

Input Volt.Input Volt.Input Volt.

36V48V

76V

Load 50%Load 100%

Input Volt.

Input Volt.

Input Volt.

48V

76V

36V

200mV/div400usec/div

Input Volt.Input Volt.Input Volt.

36V48V

76V

Page 28: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.1.3 CHS604812

Fig.5.1.3

Overview of

CHS604812 at 25℃

CHS 5-3

Out

put

Vol

tage

[V

]

Load Current [A]

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

0 2 4 6

Out

put

Vol

tage

[V

]

Input Voltage [V]

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

20 40 60 80

Pow

er D

issi

patio

n [W

]

Load Current [A]

0

2

4

6

8

10

0 2 4 6

Eff

icie

ncy

[%]

Load Current [A]

50

60

70

80

90

100

0 2 4 6

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(3A)→Load 100%(6A)/50usVin 48V,Vout 12V

(f) Dynamic Load ResponseLoad 100%(6A)→Load 50%(3A)/50usVin 48V,Vout 12V

500mV/div400usec/div

500mV/div400usec/div

Input Volt.Input Volt.Input Volt.

36V48V

76V

Load 50%Load 100%

Input Volt.

Input Volt.

Input Volt.

48V

76V

36V

Input Volt.

Input Volt.Input Volt.

36V48V

76V

Page 29: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.2 CHS80

5.2.1 CHS80483R3

Fig.5.2.1

Overview of

CHS80483R3 at 25℃

CHS 5-4

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(12.5A)→Load 100%(25A)/50usVin 48V,Vout 3.3V

(f) Dynamic Load ResponseLoad 100%(25A)→Load 50%(12.5A)/50usVin 48V,Vout 3.3V

Load Current [A]

Out

put V

olta

ge [V

]

3.22

3.24

3.26

3.28

3.30

3.32

3.34

3.36

0 10 20 30

Input Voltage [V]

Out

put V

olta

ge [V

]

3.22

3.24

3.26

3.28

3.30

3.32

3.34

3.36

20 40 60 80

Load 50%Load 100%

Pow

er D

issi

patio

n [W

]

Load Current [A]

0

2

4

6

8

10

0 10 20 30

Effi

cien

cy [%

]

Load Current [A]

44

52

60

68

76

84

92

100

0 10 20 30

Input Volt.Input Volt.Input Volt.

36V48V

76V

Input Volt.

Input Volt.

Input Volt.

48V

76V

36V

100mV/div200usec/div

100mV/div200usec/div

Input Volt.Input Volt.Input Volt.

36V48V

76V

Page 30: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.2.2 CHS804805

Fig.5.2.2

Overview of

CHS804805 at 25℃

CHS 5-5

Out

put V

olta

ge [V

]

Input Voltage [V]

4.92

4.94

4.96

4.98

5.00

5.02

5.04

5.06

20 40 60 80

Load Current [A]

Out

put V

olta

ge [V

]

4.92

4.94

4.96

4.98

5.00

5.02

5.04

5.06

0 4 8 12 16

Load Current [A]

Effi

cien

cy [%

]

44

52

60

68

76

84

92

100

0 4 8 12 16

Load Current [A]

Pow

er D

issi

patio

n [W

]

0

2

4

6

8

10

0 4 8 12 16

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(8A)→Load 100%(16A)/50usVin 48V,Vout 5.0V

(f) Dynamic Load ResponseLoad 100%(16A)→Load 50%(8A)/50usVin 48V,Vout 5.0V

100mV/div200usec/div

100mV/div200usec/div

Input Volt.Input Volt.Input Volt.

36V48V

76V

Load 50%Load 100%

Input Volt.

Input Volt.

Input Volt.

48V

76V

36V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Page 31: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.2.3 CHS804812

Fig.5.2.3

Overview of

CHS804812 at 25℃

CHS 5-6

Pow

er D

issi

patio

n [W

]

Load Current [A]

0

2

4

6

8

10

12

0 2 4 6 8

Input Voltage [V]

Out

put V

olta

ge [V

]

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

20 40 60 80

Load Current [A]

Out

put V

olta

ge [V

]

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

0 2 4 6 8

Effi

cien

cy [%

]

Load Current [A]

44

52

60

68

76

84

92

100

0 2 4 6 8

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(3.75A)→Load 100%(7.5A)/50usVin 48V,Vout 12V

(f) Dynamic Load ResponseLoad 100%(7.5A)→Load 50%(3.75A)/50usVin 48V,Vout 12V

200mV/div200usec/div

200mV/div200usec/div

Input Volt.Input Volt.Input Volt.

36V48V

76V

Load 50%Load 100%

Input Volt.

Input Volt.

Input Volt.

48V

76V

36V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Page 32: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.3 CHS120

5.3.1 CHS1202405

Fig.5.3.1

Overview of

CHS1202405 at 25℃

CHS 5-7

Load Current [A]

Pow

er D

issi

patio

n [W

]

0

2

4

6

8

10

12

14

0 10 20 30

Input Voltage [V]

Out

put

Vol

tage

[V

]

4.92

4.94

4.96

4.98

5.00

5.02

5.04

5.06

10 20 30 40

Load Current [A]

Out

put

Vol

tage

[V

]

4.92

4.94

4.96

4.98

5.00

5.02

5.04

5.06

0 10 20 30

Load Current [A]

Eff

icie

ncy

[%]

70

80

90

100

0 10 20 30

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(12A)→Load 100%(24A)/50usVin 24V,Vout 5.0V

(f) Dynamic Load ResponseLoad 100%(24A)→Load 50%(12A)/50usVin 24V,Vout 5.0V

Load 50%Load 100%

100mV/div5msec/div

100mV/div500usec/div

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Page 33: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.3.2 CHS1202412

Fig.5.3.2

Overview of

CHS1202412 at 25℃

CHS 5-8

Pow

er D

issi

patio

n [W

]

Load Current [A]

0

2

4

6

8

10

12

14

0 4 8 12

Eff

icie

ncy

[%]

Load Current [A]

70

80

90

100

0 4 8 12

Out

put

Vol

tage

[V

]

Input Voltage [V]

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

10 20 30 40

Out

put

Vol

tage

[V

]

Load Current [A]

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

0 4 8 12

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(5A)→Load 100%(10A)/50usVin 24V,Vout 12V

(f) Dynamic Load ResponseLoad 100%(10A)→Load 50%(5A)/50usVin 24V,Vout 12V

500mV/div5msec/div

500mV/div500usec/div

Load 50%Load 100%

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Input Volt.

Input Volt.

Input Volt.

18V24V

36V

Page 34: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.3.3 CHS1202415

Fig.5.3.3

Overview of

CHS1202415 at 25℃

CHS 5-9

Load Current [A]

Out

put

Vol

tage

[V

]

14.60

14.70

14.80

14.90

15.00

15.10

15.20

15.30

0 2 4 6 8

Input Voltage [V]

Out

put

Vol

tage

[V

]

14.60

14.70

14.80

14.90

15.00

15.10

15.20

15.30

10 20 30 40

Load Current [A]

Eff

icie

ncy

[%]

70

80

90

100

0 2 4 6 8

Load Current [A]

Pow

er D

issi

patio

n[W

]

0

2

4

6

8

10

12

14

16

0 2 4 6 8

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(4A)→Load 100%(8A)/50usVin 24V,Vout 15V

(f) Dynamic Load ResponseLoad 100%(8A)→Load 50%(4A)/50usVin 24V,Vout 15V

500mV/div5msec/div

500mV/div500usec/div

Load 50%Load 100%

Input Volt.

Input Volt.

Input Volt.

18V24V

36V

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Input Volt.

Input Volt.

Input Volt.

18V24V

36V

Page 35: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.3.4 CHS1202424

Fig.5.3.4

Overview of

CHS1202424 at 25℃

CHS 5-10

Out

put

Vol

tage

[V

]

Load Current [A]

23.60

23.70

23.80

23.90

24.00

24.10

24.20

24.30

0.0 1.0 2.0 3.0 4.0 5.0

Out

put

Vol

tage

[V

]

Input Voltage [V]

23.70

23.80

23.90

24.00

24.10

24.20

24.30

24.40

10 20 30 40

Load Current [A]

Pow

er D

issi

patio

n [W

]

0

2

4

6

8

10

12

14

16

0.0 1.0 2.0 3.0 4.0 5.0

Eff

icie

ncy

[%]

Load Current [A]

70

80

90

100

0.0 1.0 2.0 3.0 4.0 5.0

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(2.1A)→Load 100%(4.2A)/50usVin 24V,Vout 24V

(f) Dynamic Load ResponseLoad 100%(4.2A)→Load 50%(2.1A)/50usVin 24V,Vout 24V

1V/div200usec/div

1V/div200usec/div

Load 50%Load 100%

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Input Volt.

Input Volt.

Input Volt.

18V24V

36V

Page 36: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.3.5 CHS120483R3

Fig.5.3.5

Overview of

CHS120483R3 at 25℃

CHS 5-11

Load Current [A]

Pow

er D

issi

patio

n [W

]

0

2

4

6

8

10

12

0 10 20 30

Load Current [A]

Eff

icie

ncy

[%]

70

80

90

100

0 10 20 30

Out

put

Vol

tage

[V

]

Input Voltage [V]

3.24

3.26

3.28

3.30

3.32

3.34

3.36

3.38

20 40 60 80

Out

put

Vol

tage

[V

]

Load Current [A]

3.24

3.26

3.28

3.30

3.32

3.34

3.36

3.38

0 10 20 30

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(15A)→Load 100%(30A)/50usVin 48V,Vout 3.3V

(f) Dynamic Load ResponseLoad 100%(30A)→Load 50%(15A)/50usVin 48V,Vout 3.3V

Load 50%Load 100%

Input Volt.

Input Volt.Input Volt.

36V48V

76V

Input Volt.

Input Volt.

Input Volt.

48V

76V

36V

100mV/div200usec/div

100mV/div200usec/div

Input Volt.Input Volt.Input Volt.

36V48V

76V

Page 37: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.3.6 CHS1204805

Fig.5.3.6

Overview of

CHS1204805 at 25℃

CHS 5-12

Out

put

Vol

tage

[V

]

Load Current [A]

4.90

4.92

4.94

4.96

4.98

5.00

5.02

5.04

0 10 20 30

Out

put

Vol

tage

[V

]

Input Voltage [V]

4.90

4.92

4.94

4.96

4.98

5.00

5.02

5.04

20 40 60 80

Eff

icie

ncy

[%]

Load Current [A]

70

80

90

100

0 10 20 30

Pow

er D

issi

patio

n [W

]

Load Current [A]

0

2

4

6

8

10

12

14

0 10 20 30

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(12A)→Load 100%(24A)/50usVin 48V,Vout 5.0V

(f) Dynamic Load ResponseLoad 100%(24A)→Load 50%(12A)/50usVin 48V,Vout 5.0V

100mV/div200usec/div

100mV/div200usec/div

Input Volt.

Input Volt.Input Volt.

36V48V

76V

Load 50%Load 100%

Input Volt.

Input Volt.

Input Volt.

48V

76V

36V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Page 38: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.3.7 CHS1204812

Fig.5.3.7

Overview of

CHS1204812 at 25℃

CHS 5-13

Out

put

Vol

tage

[V

]

Load Current [A]

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

0 4 8 12

Input Voltage [V]

Out

put

Vol

tage

[V

]

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

20 40 60 80

Pow

er D

issi

patio

n [W

]

Load Current [A]

0

2

4

6

8

10

12

14

0 4 8 12

Load Current [A]

Eff

icie

ncy

[%]

70

80

90

100

0 4 8 12

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(5A)→Load 100%(10A)/50usVin 48V,Vout 12V

(f) Dynamic Load ResponseLoad 100%(10A)→Load 50%(5A)/50usVin 48V,Vout 12V

200mV/div200usec/div

200mV/div200usec/div

Input Volt.

Input Volt.Input Volt.

36V48V

76V

Load 50%Load 100%

Input Volt.

Input Volt.

Input Volt.

48V

76V

36V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Page 39: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.3.8 CHS1204815

Fig.5.3.8

Overview of

CHS1204815 at 25℃

CHS 5-14

Load Current [A]

Out

put

Vol

tage

[V

]

14.60

14.70

14.80

14.90

15.00

15.10

15.20

15.30

0 2 4 6 8

Input Voltage [V]

Out

put

Vol

tage

[V

]

14.60

14.70

14.80

14.90

15.00

15.10

15.20

15.30

20 40 60 80

Pow

er D

issi

patio

n [W

]

Load Current [A]

0

2

4

6

8

10

12

14

16

0.0 2.0 4.0 6.0 8.0 10.0

Load Current [A]

Eff

icie

ncy

[%]

70

80

90

100

0 2 4 6 8

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(4A)→Load 100%(8A)/50usVin 48V,Vout 15V

(f) Dynamic Load ResponseLoad 100%(8A)→Load 50%(4A)/50usVin 48V,Vout 15V

500mV/div200usec/div

500mV/div200usec/div

Load 50%Load 100%

Input Volt.Input Volt.Input Volt.

36V48V

76V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Page 40: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.3.9 CHS1204824

Fig.5.3.9

Overview of

CHS1204824 at 25℃

CHS 5-15

Out

put

Vol

tage

[V

]

Load Current [A]

23.70

23.80

23.90

24.00

24.10

24.20

24.30

24.40

0.0 1.0 2.0 3.0 4.0 5.0

Out

put

Vol

tage

[V

]

Input Voltage [V]

23.70

23.80

23.90

24.00

24.10

24.20

24.30

24.40

20 40 60 80

Pow

er D

issi

patio

n [W

]

Load Current [A]

0

2

4

6

8

10

12

14

16

0.0 1.0 2.0 3.0 4.0 5.0

Eff

icie

ncy

[%]

Load Current [A]

70

80

90

100

0.0 1.0 2.0 3.0 4.0 5.0

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(2.1A)→Load 100%(4.2A)/50usVin 48V,Vout 24V

(f) Dynamic Load ResponseLoad 100%(4.2A)→Load 50%(2.1A)/50usVin 48V,Vout 24V

500mV/div200usec/div

500mV/div200usec/div

Load 50%Load 100%

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Input Volt.

Input Volt.

Input Volt.

18V24V

36V

Input Volt.

Input Volt.Input Volt.

36V48V

76V

Page 41: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.4 CHS200

5.4.1 CHS200483R3

Fig.5.4.1

Overview of

CHS200483R3 at 25℃

CHS 5-16

Pow

er D

issi

patio

n [W

]

Load Current [A]

0

4

8

12

16

20

24

0 20 40 60

Load Current [A]

Effi

cien

cy [%

]

44

52

60

68

76

84

92

100

0 20 40 60

Out

put V

olta

ge [V

]

Input Voltage [V]

3.22

3.24

3.26

3.28

3.30

3.32

3.34

3.36

20 40 60 80

Out

put V

olta

ge [V

]

Load Current [A]

3.22

3.24

3.26

3.28

3.30

3.32

3.34

3.36

0 20 40 60

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(25A)→Load 100%(50A)/50usVin 48V,Vout 3.3V

(f) Dynamic Load ResponseLoad 100%(50A)→Load 50%(25A)/50usVin 48V,Vout 3.3V

200mV/div200usec/div

200mV/div200usec/div

Input Volt.

Input Volt.Input Volt.

36V48V

76V

Load 50%Load 100%

Input Volt.

Input Volt.

Input Volt.

48V

76V

36V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Page 42: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.4.2 CHS2004805

Fig.5.4.2

Overview of

CHS2004805 at 25℃

CHS 5-17

Load Current [A]

Pow

er D

issi

patio

n [W

]

0

4

8

12

16

20

24

28

0 10 20 30 40

Load Current [A]

Effi

cien

cy [%

]

44

52

60

68

76

84

92

100

0 10 20 30 40

Out

put V

olta

ge [V

]

Input Voltage [V]

4.84

4.88

4.92

4.96

5.00

5.04

5.08

5.12

5.16

20 40 60 80

Out

put V

olta

ge [V

]

Load Current [A]

4.84

4.88

4.92

4.96

5.00

5.04

5.08

5.12

5.16

0 10 20 30 40

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(20A)→Load 100%(40A)/50usVin 48V,Vout 5V

(f) Dynamic Load ResponseLoad 100%(40A)→Load 50%(20A)/50usVin 48V,Vout 5V

200mV/div200usec/div

200mV/div200usec/div

Input Volt.Input Volt.Input Volt.

36V48V

76V

Load 50%Load 100%

Input Volt.

Input Volt.Input Volt.

48V

76V

36V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Page 43: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.4.3 CHS2004812

Fig.5.4.3

Overview of

CHS2004812 at 25℃

CHS 5-18

Load Current [A]

Pow

er D

issi

patio

n [W

]

0

4

8

12

16

20

24

28

0 4 8 12 16

Load Current [A]

Effi

cien

cy [%

]

44

52

60

68

76

84

92

100

0 4 8 12 16

Input Voltage [V]

Out

put V

olta

ge [V

]

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

20 40 60 80

Load Current [A]

Out

put V

olta

ge [V

]

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

0 4 8 12 16

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load Response

Load 50%(8A)→Load 100%(16A)/50us

Vin 48V,Vout 12V

(f) Dynamic Load Response

Load 100%(16A)→Load 50%(8A)/50us

Vin 48V,Vout 12V

500mV/div200usec/div

500mV/div200usec/div

Input Volt.Input Volt.Input Volt.

36V48V

76V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Load 50%Load 100%

Input Volt.Input Volt.Input Volt.

36V48V

76V

Page 44: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.5 CHS300

5.5.1 CHS3002405

Fig.5.5.1

Overview of

CHS3002405 at 25℃

CHS 5-19

Load Current [A]

Out

put

Vol

tage

[V

]

4.92

4.94

4.96

4.98

5.00

5.02

5.04

5.06

0 10 20 30 40

Input Voltage [V]

Out

put

Vol

tage

[V

]

4.92

4.94

4.96

4.98

5.00

5.02

5.04

5.06

10 20 30 40 50

Pow

er D

issi

patio

n [W

]

Load Current [A]

0

4

8

12

16

20

0 10 20 30 40

Load Current [A]

Eff

icie

ncy

[%]

44

52

60

68

76

84

92

100

0 10 20 30 40

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

200mV/div200usec/div

200mV/div200usec/div

Load 50%Load 100%

(e) Dynamic Load ResponseLoad 50%(20A)→Load 100%(40A)/50usVin 24V,Vout 5V

(f) Dynamic Load ResponseLoad 100%(40A)→Load 50%(20A)/50usVin 24V,Vout 5V

Input Volt.

Input Volt.

Input Volt.

18V24V

36V

Input Volt.

Input Volt.

Input Volt.

18V24V

36V

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Page 45: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.5.2 CHS3002412

Fig.5.5.2

Overview of

CHS3002412 at 25℃

CHS 5-20

Out

put

Vol

tage

[V

]

Load Current [A]

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

0 4 8 12 16 20

Out

put

Vol

tage

[V

]

Input Voltage [V]

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

10 20 30 40 50

Pow

er D

issi

patio

n [W

]

Load Current [A]

0

5

10

15

20

25

0 4 8 12 16 20

Eff

icie

ncy

[%]

Load Current [A]

44

52

60

68

76

84

92

100

0 4 8 12 16 20

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

500mV/div200usec/div

500mV/div200usec/div

Load 50%Load 100%

(e) Dynamic Load ResponseLoad 50%(8.35A)→Load 100%(16.7A)/50usVin 24V,Vout 12V

(f) Dynamic Load ResponseLoad 100%(16.7A)→Load 50%(8.35A)/50us Vin 24V,Vout 12V

Input Volt.

Input Volt.

Input Volt.

18V24V

36V

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Page 46: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.5.3 CHS3002415

Fig.5.5.3

Overview of

CHS3002415 at 25℃

CHS 5-21

Out

put

Vol

tage

[V

]

Load Current [A]

14.60

14.70

14.80

14.90

15.00

15.10

15.20

15.30

0 4 8 12 16

Out

put

Vol

tage

[V

]

Input Voltage [V]

14.60

14.70

14.80

14.90

15.00

15.10

15.20

15.30

10 20 30 40 50

Pow

er D

issi

patio

n [W

]

0

5

10

15

20

25

0 4 8 12 16

Eff

icie

ncy

[%]

Load Current [A]

44

52

60

68

76

84

92

100

0 4 8 12 16

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

500mV/div200usec/div

500mV/div200usec/div

Input Volt.

Input Volt.

Input Volt.

18V24V

36V

Load 50%Load 100%

Input Volt.

Input Volt.

Input Volt.

18V24V

36V

Input Volt.

Input Volt.

Input Volt.

18V24V

36V

(e) Dynamic Load ResponseLoad 50%(6.75A)→Load 100%(13.5A)/50usVin 24V,Vout 15V

(f) Dynamic Load ResponseLoad 100%(13.5A)→Load 50%(6.75A)/50us Vin 24V,Vout 15V

Page 47: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.5.4 CHS3002424

Fig.5.5.4

Overview of

CHS3002424 at 25℃

CHS 5-22

Pow

er D

issi

patio

n [W

]

Load Current [A]

0

5

10

15

20

25

0 4 8 12

Load Current [A]

Eff

icie

ncy

[%]

44

52

60

68

76

84

92

100

0 4 8 12

Out

put

Vol

tage

[V

]

Input Voltage [V]

23.70

23.80

23.90

24.00

24.10

24.20

24.30

24.40

10 20 30 40 50

Out

put

Vol

tage

[V

]

Load Current [A]

23.70

23.80

23.90

24.00

24.10

24.20

24.30

24.40

0 4 8 12

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

1V/div200usec/div

1V/div200usec/div

Load 50%Load 100%

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Input Volt.

Input Volt.

Input Volt.

18V24V

36V

(e) Dynamic Load ResponseLoad 50%(5.25A)→Load 100%(10.5A)/50usVin 24V,Vout 24V

(f) Dynamic Load ResponseLoad 100%(10.5A)→Load 50%(5.25A)/50us Vin 24V,Vout 24V

Page 48: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.5.5 CHS3002428

Fig.5.5.5

Overview of

CHS3002428 at 25℃

CHS 5-23

Pow

er D

issi

patio

n [W

]

Load Current [A]

0

5

10

15

20

25

0 2 4 6 8 10 12

Eff

icie

ncy

[%]

Load Current [A]

44

52

60

68

76

84

92

100

0 2 4 6 8 10 12

Input Voltage [V]

Out

put

Vol

tage

[V

]

27.60

27.70

27.80

27.90

28.00

28.10

28.20

28.30

10 20 30 40 50

Load Current [A]

Out

put

Vol

tage

[V

]

27.60

27.70

27.80

27.90

28.00

28.10

28.20

28.30

0 2 4 6 8 10 12

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

1V/div200usec/div

1V/div200usec/div

Input Volt.

Input Volt.

Input Volt.

18V24V

36V

Load 50%Load 100%

Input Volt.

Input Volt.

Input Volt.

18V24V

36V

Input Volt.

Input Volt.

Input Volt.

18V24V

36V

(e) Dynamic Load ResponseLoad 50%(4.5A)→Load 100%(9A)/50usVin 24V,Vout 28V

(f) Dynamic Load ResponseLoad 100%(9A)→Load 50%(4.5A)/50us Vin 24V,Vout 28V

Page 49: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.5.6 CHS3002432

Fig.5.5.6

Overview of

CHS3002432 at 25℃

CHS 5-24

Load Current [A]

Pow

er D

issi

patio

n [W

]

0

5

10

15

20

25

0 2 4 6 8 10

Load Current [A]

Eff

icie

ncy

[%]

44

52

60

68

76

84

92

100

0 2 4 6 8 10

Out

put

Vol

tage

[V

]

Input Voltage [V]

31.60

31.70

31.80

31.90

32.00

32.10

32.20

32.30

10 20 30 40 50

Out

put

Vol

tage

[V

]

Load Current [A]

31.60

31.70

31.80

31.90

32.00

32.10

32.20

32.30

0 2 4 6 8 10

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

1V/div200usec/div

1V/div200usec/div

Input Volt.

Input Volt.

Input Volt.

18V24V

36V

Load 50%Load 100%

Input Volt.

Input Volt.

Input Volt.

18V24V

36V

Input Volt.

Input Volt.

Input Volt.

18V24V

36V

(e) Dynamic Load ResponseLoad 50%(3.95A)→Load 100%(7.9A)/50usVin 24V,Vout 32V

(f) Dynamic Load ResponseLoad 100%(7.9A)→Load 50%(3.95A)/50us Vin 24V,Vout 32V

Page 50: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.5.7 CHS3002448

Fig.5.5.7

Overview of

CHS3002448 at 25℃

CHS 5-25

Load Current [A]

Pow

er D

issi

patio

n [W

]

0

5

10

15

20

25

0 2 4 6

Load Current [A]

Eff

icie

ncy

[%]

44

52

60

68

76

84

92

100

0 2 4 6

Input Voltage [V]

Out

put

Vol

tage

[V

]

47.60

47.70

47.80

47.90

48.00

48.10

48.20

48.30

10 20 30 40 50

Load Current [A]

Out

put

Vol

tage

[V

]

47.60

47.70

47.80

47.90

48.00

48.10

48.20

48.30

0 2 4 6

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

1V/div500usec/div

1V/div500usec/div

Input Volt.

Input Volt.

Input Volt.

18V24V

36V

Load 50%Load 100%

Input Volt.

Input Volt.

Input Volt.

18V24V

36V

Input Volt.

Input Volt.

Input Volt.

18V24V

36V

(e) Dynamic Load ResponseLoad 50%(2.65A)→Load 100%(5.3A)/50usVin 24V,Vout 48V

(f) Dynamic Load ResponseLoad 100%(5.3A)→Load 50%(2.65A)/50us Vin 24V,Vout 48V

Page 51: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.5.8 CHS3004810

Fig.5.5.8

Overview of

CHS3004810 at 25℃

CHS 5-26

Eff

icie

ncy

[%]

Load Current [A]

44

52

60

68

76

84

92

100

0 10 20 30

Pow

er D

issi

patio

n [W

]

Load Current [A]

0

4

8

12

16

20

24

28

0 10 20 30

Out

put

Vol

tage

[V

]

Load Current [A]

9.80

9.84

9.88

9.92

9.96

10.00

10.04

10.08

0 10 20 30

Out

put

Vol

tage

[V

]

Input Voltage [V]

9.80

9.84

9.88

9.92

9.96

10.00

10.04

10.08

20 40 60 80

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

500mV/div200usec/div

500mV/div200usec/div

Input Volt.

Input Volt.Input Volt.

36V48V

76V

Load 50%Load 100%

Input Volt.

Input Volt.Input Volt.

48V

76V

36V

(e) Dynamic Load ResponseLoad 50%(15A)→Load 100%(30A)/50usVin 48V,Vout 10V

(f) Dynamic Load ResponseLoad 100%(30A)→Load 50%(15A)/50usVin 48V,Vout 10V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Page 52: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.5.9 CHS3004812

Fig.5.5.9

Overview of

CHS3004812 at 25℃

CHS 5-27

Out

put

Vol

tage

[V

]

Input Voltage [V]

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

20 40 60 80

Out

put

Vol

tage

[V

]

Load Current [A]

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

0 10 20 30

Eff

icie

ncy

[%]

Load Current [A]

44

52

60

68

76

84

92

100

0 10 20 30

Load Current [A]

Pow

er D

issi

patio

n [W

]

0

4

8

12

16

20

24

28

0 10 20 30

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

500mV/div200usec/div

500mV/div200usec/div

Input Volt.Input Volt.Input Volt.

36V48V

76V

Load 50%Load 100%

Input Volt.

Input Volt.

Input Volt.

48V

76V

36V

(e) Dynamic Load ResponseLoad 50%(12.5A)→Load 100%(25A)/50usVin 48V,Vout 12V

(f) Dynamic Load ResponseLoad 100%(25A)→Load 50%(12.5A)/50usVin 48V,Vout 12V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Page 53: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.5.10 CHS3004812H

Fig.5.5.10

Overview of

CHS3004812H at 25℃

CHS 5-28

Out

put

Vol

tage

[V

]

Load Current [A]

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

0 10 20 30

Input Voltage [V]

Out

put

Vol

tage

[V

]

11.00

11.10

11.20

11.30

11.40

11.50

11.60

11.70

11.80

11.90

12.00

12.10

12.20

30 40 50 60 70 80

Eff

icie

ncy

[%]

Load Current [A]

44

52

60

68

76

84

92

100

0 10 20 30

Load Current [A]

Pow

er D

issi

patio

n [W

]

0

4

8

12

16

20

24

28

0 10 20 30

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

500mV/div200usec/div

500mV/div200usec/div

Input Volt.

Input Volt.

Input Volt.

40V

48V

76V

Input Volt.

Input Volt.

Input Volt.

40V

48V

76V

Input Volt.

Input Volt.

Input Volt.

40V

48V

76V

Load 100%

Load 50%

Load 0%

(e) Dynamic Load ResponseLoad 50%(12.5A)→Load 100%(25A)/50usVin 48V,Vout 12V

(f) Dynamic Load ResponseLoad 100%(25A)→Load 50%(12.5A)/50usVin 48V,Vout 12V

Page 54: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.5.11 CHS3004815

Fig.5.5.11

Overview of

CHS3004815 at 25℃

CHS 5-29

Load Current [A]

Pow

er D

issi

patio

n [W

]

0

5

10

15

20

25

0 5 10 15 20 25

Load Current [A]

Eff

icie

ncy

[%]

44

52

60

68

76

84

92

100

0 5 10 15 20 25

Load Current [A]

Out

put

Vol

tage

[V

]

14.60

14.70

14.80

14.90

15.00

15.10

15.20

15.30

0 5 10 15 20 25

Input Voltage [V]

Out

put

Vol

tage

[V

]

14.60

14.70

14.80

14.90

15.00

15.10

15.20

15.30

20 40 60 80

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

1V/div400usec/div

1V/div400usec/div

Load 50%Load 100%

(e) Dynamic Load ResponseLoad 50%(10A)→Load 100%(20A)/50usVin 48V,Vout 15V

(f) Dynamic Load ResponseLoad 100%(20A)→Load 50%(10A)/50us Vin 48V,Vout 15V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Page 55: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.5.12 CHS3004824

Fig.5.5.12

Overview of

CHS3004824 at 25℃

CHS 5-30

Load Current [A]

Pow

er D

issi

patio

n [W

]

0

5

10

15

20

25

0 4 8 12

Load Current [A]

Eff

icie

ncy

[%]

44

52

60

68

76

84

92

100

0 4 8 12

Input Voltage [V]

Out

put

Vol

tage

[V

]

23.70

23.80

23.90

24.00

24.10

24.20

24.30

24.40

20 40 60 80

Load Current [A]

Out

put

Vol

tage

[V

]

23.70

23.80

23.90

24.00

24.10

24.20

24.30

24.40

0 4 8 12

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

1V/div400usec/div

1V/div400usec/div

Load 50%Load 100%

(e) Dynamic Load ResponseLoad 50%(6.25A)→Load 100%(12.5A)/50usVin 48V,Vout 24V

(f) Dynamic Load ResponseLoad 100%(12.5A)→Load 50%(6.25A)/50us Vin 48V,Vout 24V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Page 56: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.5.13 CHS3004828

Fig.5.5.13

Overview of

CHS3004828 at 25℃

CHS 5-31

Load Current [A]

Pow

er D

issi

patio

n [W

]

0

5

10

15

20

25

0 4 8 12

Load Current [A]

Eff

icie

ncy

[%]

44

52

60

68

76

84

92

100

0 4 8 12

Input Voltage [V]

Out

put

Vol

tage

[V

]

27.60

27.70

27.80

27.90

28.00

28.10

28.20

28.30

20 40 60 80

Load Current [A]

Out

put

Vol

tage

[V

]

27.60

27.70

27.80

27.90

28.00

28.10

28.20

28.30

0 4 8 12

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

1V/div400usec/div

1V/div400usec/div

Load 50%Load 100%

(e) Dynamic Load ResponseLoad 50%(5.4A)→Load 100%(10.8A)/50usVin 48V,Vout 28V

(f) Dynamic Load ResponseLoad 100%(10.8A)→Load 50%(5.4A)/50us Vin 48V,Vout 28V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Page 57: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.5.14 CHS3004832

Fig.5.5.14

Overview of

CHS3004832 at 25℃

CHS 5-32

Pow

er D

issi

patio

n [W

]

Load Current [A]

0

5

10

15

20

25

0 4 8 12

Load Current [A]

Eff

icie

ncy

[%]

44

52

60

68

76

84

92

100

0 4 8 12

Input Voltage [V]

Out

put

Vol

tage

[V

]

31.70

31.80

31.90

32.00

32.10

32.20

32.30

32.40

20 40 60 80

Load Current [A]

Out

put

Vol

tage

[V

]

31.70

31.80

31.90

32.00

32.10

32.20

32.30

32.40

0 4 8 12

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

1V/div400usec/div

1V/div400usec/div

Load 50%Load 100%

(e) Dynamic Load ResponseLoad 50%(4.7A)→Load 100%(9.4A)/50usVin 48V,Vout 32V

(f) Dynamic Load ResponseLoad 100%(9.4A)→Load 50%(4.7A)/50us Vin 48V,Vout 32V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Page 58: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.5.15 CHS3004848

Fig.5.5.15

Overview of

CHS3004848 at 25℃

CHS 5-33

Load Current [A]

Pow

er D

issi

patio

n [W

]

0

5

10

15

20

25

30

0 2 4 6 8

Load Current [A]

Eff

icie

ncy

[%]

44

52

60

68

76

84

92

100

0 2 4 6 8

Input Voltage [V]

Out

put

Vol

tage

[V

]

47.70

47.80

47.90

48.00

48.10

48.20

48.30

48.40

20 40 60 80

Load Current [A]

Out

put

Vol

tage

[V

]

47.70

47.80

47.90

48.00

48.10

48.20

48.30

48.40

0 2 4 6 8

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

1V/div400usec/div

1V/div400usec/div

Load 50%Load 100%

(e) Dynamic Load ResponseLoad 50%(3.15A)→Load 100%(6.3A)/50usVin 48V,Vout 48V

(f) Dynamic Load ResponseLoad 100%(6.3A)→Load 50%(3.15A)/50us Vin 48V,Vout 48V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Page 59: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.6 CHS380

5.6.1 CHS3804810

Fig.5.6.1

Overview of

CHS3804810 at 25℃

CHS 5-34

Pow

er D

issi

patio

n [W

]

Load Current [A]

0

5

10

15

20

25

30

35

40

0 10 20 30 40

0

5

10

15

20

25

30

35

0 10 20 30 40

Load Current [A]

Effi

cien

cy [%

]

44

52

60

68

76

84

92

100

0 10 20 30 4044

52

60

68

76

84

92

100

0 10 20 30 40

Out

put V

olta

ge [V

]

Input Voltage [V]

9.84

9.88

9.92

9.96

10.00

10.04

10.08

10.12

20 40 60 809.84

9.88

9.92

9.96

10.00

10.04

10.08

10.12

20 40 60 80

Out

put V

olta

ge [V

]

Load Current [A]

9.84

9.88

9.92

9.96

10.00

10.04

10.08

10.12

0 10 20 30 409.84

9.88

9.92

9.96

10.00

10.04

10.08

10.12

0 10 20 30 40

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(19A)→Load 100%(38A)/50usVin 48V,Vout 10V

(f) Dynamic Load ResponseLoad 100%(38A)→Load 50%(19A)/50usVin 48V,Vout 10V

500mV/div200usec/div

500mV/div200usec/div

Input Volt.

Input Volt.Input Volt.

36V48V

76V

Load 50%Load 100%

Input Volt.

Input Volt.

Input Volt.

48V

76V

36V

Input Volt.

Input Volt.Input Volt.

36V48V

76V

Load Current [A]

Page 60: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.6.2 CHS3804812

Fig.5.6.2

Overview of

CHS3804812 at 25℃

CHS 5-35

Out

put V

olta

ge [V

]

Input Voltage [V]

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

20 40 60 8011.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

20 40 60 80

Out

put V

olta

ge [V

]

Load Current [A]

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

0 10 20 30 40

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

0 10 20 30 40

Load Current [A]

Pow

er D

issi

patio

n [W

]

0

5

10

15

20

25

30

0 10 20 30 40

0

5

10

15

20

25

30

35

0 10 20 30 40

Load Current [A]

Effi

cien

cy [%

]

44

52

60

68

76

84

92

100

0 10 20 30 4044

52

60

68

76

84

92

100

0 10 20 30 40

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(16A)→Load 100%(32A)/50usVin 48V,Vout 12V

(f) Dynamic Load ResponseLoad 100%(32A)→Load 50%(16A)/50usVin 48V,Vout 12V

500mV/div200usec/div

500mV/div200usec/div

Input Volt.

Input Volt.Input Volt.

36V48V

76V

Load 50%Load 100%

Input Volt.

Input Volt.

Input Volt.

48V

76V

36V

Input Volt.

Input Volt.Input Volt.

36V48V

76V

Load Current [A]

Page 61: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.6.3 CHS3804812H

Fig.5.6.3

Overview of

CHS3804812H at 25℃

CHS 5-36

Out

put V

olta

ge [V

]

Load Current [A]

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

0 10 20 30 4011.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

0 10 20 30 40

Out

put V

olta

ge [V

]

Input Voltage [V]

10.25

10.45

10.65

10.85

11.05

11.25

11.45

11.65

11.85

12.05

12.25

20 40 60 8011.00

11.10

11.20

11.30

11.40

11.50

11.60

11.70

11.80

11.90

12.00

12.10

12.20

30 40 50 60 70 80

Load Current [A]

Pow

er D

issi

patio

n [W

]

0

5

10

15

20

25

30

0 10 20 30 40

0

5

10

15

20

25

30

35

0 10 20 30 40

Load Current [A]

Effi

cien

cy [%

]

44

52

60

68

76

84

92

100

0 10 20 30 4044

52

60

68

76

84

92

100

0 10 20 30 40

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(16A)→Load 100%(32A)/50usVin 48V,Vout 12V

(f) Dynamic Load ResponseLoad 100%(32A)→Load 50%(16A)/50usVin 48V,Vout 12V

500mV/div200usec/div500mV/div

200usec/div

Input Volt.

Input Volt.

Input Volt.

40V

48V

76V

Input Volt.

Input Volt.

Input Volt.

40V

48V

76V

Input Volt.

Input Volt.

Input Volt.

40V

48V

76V

Load Current [A]

Load 100%

Load 50%

Load 0%

Page 62: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.7 CHS400

5.7.1 CHS4002412

Fig.5.7.1

Overview of

CHS4002412 at 25℃

CHS 5-37

Load Current [A]

Pow

er D

issi

patio

n [W

]

0

5

10

15

20

25

30

0 5 10 15 20 25 30

Eff

icie

ncy

[%]

Load Current [A]

44

52

60

68

76

84

92

100

0 10 20 30

Out

put

Vol

tage

[V

]

Input Voltage [V]

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

10 20 30 40 50

Out

put

Vol

tage

[V

]

Load Current [A]

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

0 10 20 30

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(13.25A)→Load 100%(26.5A)/50usVin 24V,Vout 12V

(f) Dynamic Load ResponseLoad 100%(26.5A)→Load 50%(13.25A)/50usVin 24V,Vout 12V

500mV/div200usec/div

500mV/div200usec/div

Load 50%Load 100%

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Page 63: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.7.2 CHS4002415

Fig.5.7.2

Overview of

CHS4002415 at 25℃

CHS 5-38

Load Current [A]

Pow

er D

issi

patio

n [W

]

0

5

10

15

20

25

30

35

40

0 5 10 15 20 25 30

Load Current [A]

Eff

icie

ncy

[%]

44

52

60

68

76

84

92

100

0 10 20 30

Input Voltage [V]

Out

put

Vol

tage

[V

]

14.60

14.70

14.80

14.90

15.00

15.10

15.20

15.30

10 20 30 40 50

Load Current [A]

Out

put

Vol

tage

[V

]

14.60

14.70

14.80

14.90

15.00

15.10

15.20

15.30

0 10 20 30

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(13.25A)→Load 100%(26.5A)/50usVin 24V,Vout 15V

(f) Dynamic Load ResponseLoad 100%(26.5A)→Load 50%(13.25A)/50usVin 24V,Vout 15V

500mV/div200usec/div

500mV/div200usec/div

Load 50%Load 100%

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Input Volt.

Input Volt.

Input Volt.

18V24V

36V

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Page 64: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.7.3 CHS4002424

Fig.5.7.3

Overview of

CHS4002424 at 25℃

CHS 5-39

Load Current [A]

Pow

er D

issi

patio

n [W

]

0

5

10

15

20

25

30

0 4 8 12 16 20

Load Current [A]

Eff

icie

ncy

[%]

44

52

60

68

76

84

92

100

0 4 8 12 16 20

Input Voltage [V]

Out

put

Vol

tage

[V

]

23.70

23.80

23.90

24.00

24.10

24.20

24.30

24.40

10 20 30 40 50

Load Current [A]

Out

put

Vol

tage

[V

]

23.70

23.80

23.90

24.00

24.10

24.20

24.30

24.40

0 4 8 12 16 20

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(7.25A)→Load 100%(14.5A)/50usVin 24V,Vout 24V

(f) Dynamic Load ResponseLoad 100%(14.5A)→Load 50%(7.25A)/50usVin 24V,Vout 24V

500mV/div200usec/div

500mV/div200usec/div

Load 50%Load 100%

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Page 65: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.7.4 CHS4002428

Fig.5.7.4

Overview of

CHS4002428 at 25℃

CHS 5-40

Load Current [A]

Pow

er D

issi

patio

n [W

]

0

5

10

15

20

25

30

35

0 4 8 12 16

Eff

icie

ncy

[%]

Load Current [A]

44

52

60

68

76

84

92

100

0 4 8 12 16

Out

put

Vol

tage

[V

]

Input Voltage [V]

27.20

27.40

27.60

27.80

28.00

28.20

28.40

28.60

28.80

10 20 30 40 50

Out

put

Vol

tage

[V

]

Load Current [A]

27.20

27.40

27.60

27.80

28.00

28.20

28.40

28.60

28.80

0 4 8 12 16

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(6.25A)→Load 100%(12.5A)/50usVin 24V,Vout 28V

(f) Dynamic Load ResponseLoad 100%(12.5A)→Load 50%(6.25A)/50usVin 24V,Vout 28V

500mV/div200usec/div

500mV/div200usec/div

Load 50%Load 100%

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Page 66: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.7.5 CHS4002432

Fig.5.7.5

Overview of

CHS4002432 at 25℃

CHS 5-41

Load Current [A]

Pow

er D

issi

patio

n [W

]

0

5

10

15

20

25

30

35

0 4 8 12 16

Eff

icie

ncy

[%]

Load Current [A]

44

52

60

68

76

84

92

100

0 2 4 6 8 10 12 14

Out

put

Vol

tage

[V

]

Input Voltage [V]

31.20

31.40

31.60

31.80

32.00

32.20

32.40

32.60

32.80

10 20 30 40 50

Out

put

Vol

tage

[V

]

Load Current [A]

31.20

31.40

31.60

31.80

32.00

32.20

32.40

32.60

32.80

0 2 4 6 8 10 12 14

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(5.5A)→Load 100%(11A)/50usVin 24V,Vout 32V

(f) Dynamic Load ResponseLoad 100%(11A)→Load 50%(5.5A)/50usVin 24V,Vout 32V

500mV/div200usec/div

500mV/div200usec/div

Load 50%Load 100%

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Page 67: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.7.6 CHS4002448

Fig.5.7.6

Overview of

CHS4002448 at 25℃

CHS 5-42

Load Current [A]

Pow

er D

issi

patio

n [W

]

0

5

10

15

20

25

30

0 2 4 6 8

Eff

icie

ncy

[%]

Load Current [A]

44

52

60

68

76

84

92

100

0 2 4 6 8

Out

put

Vol

tage

[V

]

Input Voltage [V]

47.60

47.70

47.80

47.90

48.00

48.10

48.20

48.30

10 20 30 40 50

Out

put

Vol

tage

[V

]

Load Current [A]

47.60

47.70

47.80

47.90

48.00

48.10

48.20

48.30

0 2 4 6 8

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(3.15A)→Load 100%(6.3A)/50usVin 24V,Vout 48V

(f) Dynamic Load ResponseLoad 100%(6.3A)→Load 50%(3.15A)/50usVin 24V,Vout 48V

500mV/div200usec/div

500mV/div200usec/div

Load 50%Load 100%

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Input Volt.

Input Volt.

Input Volt.

18V

24V

36V

Page 68: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.7.7 CHS4004810

Fig.5.7.7

Overview of

CHS4004810 at 25℃

CHS 5-43

Out

put V

olta

ge [V

]

Load Current [A]

9.84

9.88

9.92

9.96

10.00

10.04

10.08

10.12

0 10 20 30 40

Out

put V

olta

ge [V

]

Input Voltage [V]

9.84

9.88

9.92

9.96

10.00

10.04

10.08

10.12

20 40 60 80

Load Current [A]

Effi

cien

cy [%

]

44

52

60

68

76

84

92

100

0 10 20 30 40

Pow

er D

issi

patio

n [W

]

Load Current [A]

0

5

10

15

20

25

30

35

40

0 10 20 30 40

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(20A)→Load 100%(40A)/50usVin 48V,Vout 10V

(f) Dynamic Load ResponseLoad 100%(40A)→Load 50%(20A)/50usVin 48V,Vout 10V

500mV/div200usec/div

500mV/div200usec/div

Input Volt.Input Volt.Input Volt.

36V48V

76V

Load 50%Load 100%

Input Volt.

Input Volt.

Input Volt.

48V

76V

36V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Page 69: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.7.8 CHS4004812

Fig.5.7.8

Overview of

CHS4004812 at 25℃

CHS 5-44

Out

put V

olta

ge [V

]

Input Voltage [V]

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

20 40 60 80

Out

put V

olta

ge [V

]

Load Current [A]

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

0 10 20 30 40

Load Current [A]

Effi

cien

cy [%

]

44

52

60

68

76

84

92

100

0 10 20 30 40

Load Current [A]

Pow

er D

issi

patio

n [W

]

0

5

10

15

20

25

30

0 10 20 30 40

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(16.5A)→Load 100%(33A)/50usVin 48V,Vout 12V

(f) Dynamic Load ResponseLoad 100%(33A)→Load 50%(16.5A)/50usVin 48V,Vout 12V

500mV/div200usec/div

500mV/div200usec/div

Input Volt.Input Volt.Input Volt.

36V48V

76V

Load 50%Load 100%

Input Volt.

Input Volt.

Input Volt.

48V

76V

36V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Page 70: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.7.9 CHS4004812H

Fig.5.7.9

Overview of

CHS4004812H at 25℃

CHS 5-45

Out

put V

olta

ge [V

]

Input Voltage [V]

10.25

10.45

10.65

10.85

11.05

11.25

11.45

11.65

11.85

12.05

12.25

20 40 60 80

Out

put V

olta

ge [V

]

Load Current [A]

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

0 10 20 30 40

Load Current [A]

Effi

cien

cy [%

]

44

52

60

68

76

84

92

100

0 10 20 30 40

Load Current [A]

Pow

er D

issi

patio

n [W

]

0

5

10

15

20

25

30

0 10 20 30 40

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(16.5A)→Load 100%(33A)/50usVin 48V,Vout 12V

(f) Dynamic Load ResponseLoad 100%(33A)→Load 50%(16.5A)/50usVin 48V,Vout 12V

500mV/div200usec/div

500mV/div200usec/div

Input Volt.

Input Volt.

Input Volt.

40V

48V

76V

Input Volt.

Input Volt.

Input Volt.

40V

48V

76V

Input Volt.

Input Volt.

Input Volt.

40V

48V

76V

Load 50%Load 100%

Page 71: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.7.10 CHS4004815

Fig.5.7.10

Overview of

CHS4004815 at 25℃

CHS 5-46

Load Current [A]

Pow

er D

issi

patio

n [W

]

0

5

10

15

20

25

30

0 10 20 30

Eff

icie

ncy

[%]

Load Current [A]

44

52

60

68

76

84

92

100

0 10 20 30

Out

put

Vol

tage

[V

]

Input Voltage [V]

14.60

14.70

14.80

14.90

15.00

15.10

15.20

15.30

20 40 60 80

Out

put

Vol

tage

[V

]

Load Current [A]

14.60

14.70

14.80

14.90

15.00

15.10

15.20

15.30

0 10 20 30

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(13.25A)→Load 100%(26.5A)/50usVin 48V,Vout 15V

(f) Dynamic Load ResponseLoad 100%(26.5A)→Load 50%(13.25A)/50usVin 48V,Vout 15V

500mV/div200usec/div

500mV/div200usec/div

Load 50%Load 100%

Input Volt.Input Volt.Input Volt.

36V48V

76V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Page 72: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.7.11 CHS4004824

Fig.5.7.11

Overview of

CHS4004824 at 25℃

CHS 5-47

Load Current [A]

Pow

er D

issi

patio

n [W

]

0

5

10

15

20

25

30

0 4 8 12 16 20

Load Current [A]

Eff

icie

ncy

[%]

44

52

60

68

76

84

92

100

0 4 8 12 16 20

Input Voltage [V]

Out

put

Vol

tage

[V

]

23.70

23.80

23.90

24.00

24.10

24.20

24.30

24.40

20 40 60 80

Load Current [A]

Out

put

Vol

tage

[V

]

23.70

23.80

23.90

24.00

24.10

24.20

24.30

24.40

0 4 8 12 16 20

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(8.25A)→Load 100%(16.5A)/50usVin 48V,Vout 24V

(f) Dynamic Load ResponseLoad 100%(16.5A)→Load 50%(8.25A)/50usVin 48V,Vout 24V

500mV/div200usec/div

500mV/div200usec/div

Load 50%Load 100%

Input Volt.Input Volt.Input Volt.

36V48V

76V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Page 73: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.7.12 CHS4004828

Fig.5.7.12

Overview of

CHS4004828 at 25℃

CHS 5-48

Load Current [A]

Pow

er D

issi

patio

n [W

]

0

5

10

15

20

25

30

35

0 4 8 12 16

Load Current [A]

Eff

icie

ncy

[%]

44

52

60

68

76

84

92

100

0 4 8 12 16

Input Voltage [V]

Out

put

Vol

tage

[V

]

27.20

27.40

27.60

27.80

28.00

28.20

28.40

28.60

28.80

20 40 60 80

Load Current [A]

Out

put

Vol

tage

[V

]

27.20

27.40

27.60

27.80

28.00

28.20

28.40

28.60

28.80

0 4 8 12 16

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(7A)→Load 100%(14A)/50usVin 48V,Vout 28V

(f) Dynamic Load ResponseLoad 100%(14A)→Load 50%(7A)/50usVin 48V,Vout 28V

500mV/div200usec/div

500mV/div200usec/div

Load 50%Load 100%

Input Volt.Input Volt.Input Volt.

36V48V

76V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Page 74: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.7.13 CHS4004832

Fig.5.7.13

Overview of

CHS4004832 at 25℃

CHS 5-49

Load Current [A]

Pow

er D

issi

patio

n [W

]

0

5

10

15

20

25

30

35

0 4 8 12 16

Load Current [A]

Eff

icie

ncy

[%]

44

52

60

68

76

84

92

100

0 4 8 12

Input Voltage [V]

Out

put

Vol

tage

[V

]

31.20

31.40

31.60

31.80

32.00

32.20

32.40

32.60

32.80

20 40 60 80

Load Current [A]

Out

put

Vol

tage

[V

]

31.20

31.40

31.60

31.80

32.00

32.20

32.40

32.60

32.80

0 4 8 12

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(6.25A)→Load 100%(12.5A)/50usVin 48V,Vout 32V

(f) Dynamic Load ResponseLoad 100%(12.5A)→Load 50%(6.25A)/50usVin 48V,Vout 32V

500mV/div200usec/div

500mV/div200usec/div

Load 50%Load 100%

Input Volt.Input Volt.Input Volt.

36V48V

76V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Page 75: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.7.14 CHS4004848

Fig.5.7.14

Overview of

CHS4004848 at 25℃

CHS 5-50

Load Current [A]

Pow

er D

issi

patio

n [W

]

0

5

10

15

20

25

30

35

40

0 2 4 6 8 10

Eff

icie

ncy

[%]

Load Current [A]

44

52

60

68

76

84

92

100

0 2 4 6 8 10

Out

put

Vol

tage

[V

]

Input Voltage [V]

47.90

48.00

48.10

48.20

48.30

48.40

48.50

48.60

20 40 60 80

Out

put

Vol

tage

[V

]

Load Current [A]

47.90

48.00

48.10

48.20

48.30

48.40

48.50

48.60

0 2 4 6 8 10

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(4.2A)→Load 100%(8.4A)/50usVin 48V,Vout 48V

(f) Dynamic Load ResponseLoad 100%(8.4A)→Load 50%(4.2A)/50usVin 48V,Vout 48V

500mV/div200usec/div

500mV/div200usec/div

Load 50%Load 100%

Input Volt.Input Volt.Input Volt.

36V48V

76V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Input Volt.

Input Volt.Input Volt.

36V48V

76V

Page 76: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

● CHS40048 -P (Option "-P") Load Regulation

Fig.5.7.15

Load Regulation of

Option "-P"

CHS 5-51

Load Current [A]

Out

put V

olta

ge [V

]

9.60

10.00

10.40

10.80

0 10 20 30 40

Load Current [A]

Out

put V

olta

ge [V

]

11.60

12.00

12.40

12.80

0 10 20 30 40

Load Current [A]

Out

put V

olta

ge [V

]

11.60

12.00

12.40

12.80

0 10 20 30 40

(c) CHS4004812H-P

(b) CHS4004812-P(a) CHS4004810-P

Input Volt.Input Volt.Input Volt.

36V48V

76V

Input Volt.

Input Volt.

Input Volt.

48V

76V

36V

Input Volt.

Input Volt.

Input Volt.

40V

48V

76V

Page 77: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.8 CHS500

5.8.1 CHS5004812

Fig.5.8.1

Overview of

CHS5004812 at 25℃

CHS 5-52

Load Current [A]

Out

put

Vol

tage

[V

]

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

0 10 20 30 40 50

Out

put

Vol

tage

[V

]

Input Voltage [V]

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

20 40 60 80

Eff

icie

ncy

[%]

Load Current [A]

44

52

60

68

76

84

92

100

0 10 20 30 40 50

Pow

er D

issi

patio

n [W

]

Load Current [A]

0

10

20

30

40

0 10 20 30 40 50

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(21A)→Load 100%(42A)/50usVin 48V,Vout 12V

(f) Dynamic Load ResponseLoad 100%(42A)→Load 50%(21A)/50usVin 48V,Vout 12V

500mV/div200usec/div

500mV/div200usec/div

Input Volt.

Input Volt.Input Volt.

36V48V

76V

Load 50%Load 100%

Input Volt.

Input Volt.

Input Volt.

48V

76V

36V

Input Volt.Input Volt.Input Volt.

36V48V

76V

Page 78: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

● CHS5004812-P (Option "-P") Load Regulation

Fig.5.8.2

Load Regulation of

Option "-P"

CHS 5-53

Out

put

Vol

tage

[V

]

Load Current [A]

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

0 10 20 30 40 50

Input Volt.Input Volt.Input Volt.

36V48V

76V

Page 79: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.9 CHS700

5.9.1 CHS7004812H

Fig.5.9.1

Overview of

CHS7004812H at 25℃

CHS 5-54

Load Current [A]

Pow

er D

issi

patio

n[W

]

0

10

20

30

40

50

0 20 40 60

Load Current [A]

Eff

icie

ncy

[%]

44

52

60

68

76

84

92

100

0 20 40 60

Load Current [A]

Out

put

Vol

tage

[V

]

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

0 20 40 60

Input Voltage [V]

Out

put

Vol

tage

[V

]

11.00

11.10

11.20

11.30

11.40

11.50

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

20 40 60 80

(c) Efficiency ( by Load Current )

(b) Line Regulation(a) Load Regulation

(d) Power Dissipation( by Load Current )

(e) Dynamic Load ResponseLoad 50%(29.25A)→Load 100%(58.5A)/50usVin 48V,Vout 12V

(f) Dynamic Load ResponseLoad 100%(58.5A)→Load 50%(29.25A)/50usVin 48V,Vout 12V

500mV/div200usec/div

500mV/div200usec/div

Load 50%Load 100%

Input Volt.

Input Volt.

Input Volt.

40V

48V

76V

Input Volt.

Input Volt.

Input Volt.

40V

48V

76V

Input Volt.

Input Volt.

Input Volt.

40V

48V

76V

Page 80: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.10 Derating

Use with the convection cooling or the forced air cooling.Make sure the temperatures at temperature mesurement locations shown from Fig5.10.17~Fig5.10.27 below are on or under the derating curve in Fig5.10.1~Fig5.10.16. Ambient temperature must be kept at 85℃ or under.

Fig.5.10.1

Derating curve

for CHS60,

CHS80, CHS200

Fig.5.10.2

Derating curve

for CHS12024

Fig.5.10.3

Derating curve

for CHS12024-BC

CHS 5-55

Option "-B" (CHS200)Others

Page 81: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Fig.5.10.4

Derating curve

for CHS12048

Fig.5.10.5

Derating curve

for CHS30024

Fig.5.10.6

Derating curve

for CHS30024-BC

CHS 5-56

Page 82: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Fig.5.10.7

Derating curve

for CHS30048

Fig.5.10.8

Derating curve

for CHS30048-B

Fig.5.10.9

Derating curve

for CHS3804812,

CHS3804812H

Fig.5.10.10

Derating curve

for CHS3804810

CHS 5-57

Page 83: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Fig.5.10.11

Derating curve

for CHS40024

Fig.5.10.12

Derating curve

for CHS4002412/15-BC

Fig.5.10.13

Derating curve

for CHS4002424/28-BC,

CHS4002432/48-BC

Fig.5.10.14

Derating curve

for CHS40048

CHS 5-58

0100 120

Temperature of measurement location[℃]

-20 0 20 40

Load

fact

or[%

]

100

80

60

40

20

-40 60 80

060 80

Load

fact

or[%

]

100

80

60

40

20

-40 -20 0 20 40 100 120

Temperature of measurement location[℃]

(62.5)

(75) (93)

Page 84: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Fig.5.10.15

Derating curve

for CHS500,CHS500-B

Fig.5.10.16

Derating curve

for CHS70048

CHS 5-59

Page 85: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Fig.5.10.17

Temperature

measurement

location for CHS60

Fig.5.10.18

Temperature

measurement

location for CHS80

Fig.5.10.19

Temperature

measurement

location for CHS120

Fig.5.10.20

Temperature

measurement

location for CHS200

Fig.5.10.21

Temperature

measurement

location for CHS3002405,

CHS3002412/15,

CHS3004810/12/12H

CHS 5-60

Page 86: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Fig.5.10.22

Temperature

measurement

location for CHS3002424,

CHS3002428/32/48,

CHS3004815/24/28/32/48

Fig.5.10.23

Temperature

measurement

location for CHS380

Fig.5.10.24

Temperature

measurement

location for CHS40024,

CHS4004815/24/28/32/48

Fig.5.10.25

Temperature

measurement

location for CHS4004810,

CHS4004812/12H

CHS 5-61

Page 87: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Fig.5.10.26

Temperature

measurement

location for CHS500

Fig.5.10.27

Temperature

measurement

location for CHS700

CHS 5-62

Page 88: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

For option “-B” which is used with the convection cooling, forced air cooling or conduction cooling, use the temperature measurement location as shown in Fig.5.10.28 ~ Fig.5.10.30.

Fig.5.10.28

Measurement location

(CHS120

option "-B" and "-BC")

Fig.5.10.29

Measurement location

(CHS200/CHS300/CHS380

option "-B" and "-BC")

Fig.5.10.30

Measurement location

(CHS400/CHS500/CHS700

option "-B" and "-BC")

CHS 5-63

Measurement location

Measurement location

Measurement location

Page 89: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Fig.5.10.32 ~ 5.10.83 show the derating curve in the condition that is measured as shown in Fig.5.10.31.Verify final design by actual temperature measurement.Make sure the temperatures at temperature measurement locations shown fromFig.5.10.17 to Fig.5.10.27.It should not exceed the derating curve in Fig.5.10.1 to Fig.5.10.16.

Fig.5.10.31

Measuring method

Fig.5.10.32

Derating curve

for CHS60483R3

Vin=48V

Fig.5.10.33

Derating curve

for CHS604805

Vin=48V

CHS 5-64

0

Load

cur

rent

[A]

6

14

60 80

4

2

12

10

8

40Ambient temperature [℃]

-40 -20 0 20

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

0

Load

cur

rent

[A]

40

18

60

4

2

14

8

80-40 -20 0 20

6

20

12

10

16

Ambient temperature [℃]

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

Page 90: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Fig.5.10.34

Derating curve

for CHS604812

Vin=48V

Fig.5.10.35

Derating curve

for CHS80483R3

Vin=48V

Fig.5.10.36

Derating curve

for CHS804805

Vin=48V

Fig.5.10.37

Derating curve

for CHS804812

Vin=48V

CHS 5-65

0

Load

cur

rent

[A]

Ambient temperature [℃]

10

5

40 60 80-40 -20 0 20

30

25

20

15   0.2m/s  0.5m/s  1.0m/s  1.5m/s  2.0m/s

040 60 80-40 -20 0 20

4

2

14

16

18

8

6

12

10

Load

cur

rent

[A]

Ambient temperature [℃]

  0.2m/s  0.5m/s  1.0m/s  1.5m/s  2.0m/s

0

3

2

1

4

60 80-40 -20 0 20 40

6

5

7

8

Load

cur

rent

[A]

Ambient temperature [℃]

  0.2m/s  0.5m/s  1.0m/s  1.5m/s  2.0m/s

0

Load

cur

rent

[A]

7

6

5

4

3

2

1

-40 -20 0 20 40 60 80Ambient temperature [℃]

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

Page 91: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Fig.5.10.38

Derating curve

for CHS1202405

Vin=24V

Fig.5.10.39

Derating curve

for CHS1202412

Vin=24V

Fig.5.10.40

Derating curve

for CHS1202415

Vin=24V

Fig.5.10.41

Derating curve

for CHS1202424

Vin=24V

CHS 5-66

0

Load

cur

rent

[A

]

4.5

4

3.5

3

2.5

2

1.5

1

0.5

-40 -20 0 20 40 60 80Ambient temperature [℃]

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

0

5

-20

Ambient temperature [℃]

Load

cur

rent

[A]

1

3

9

8

60-40 400

4

80

7

6

20

2

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

0

10

30

25

20

15

5

80-40 -20 0 20 40 60

Load

cur

rent

[A]

Ambient temperature [℃]

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

0

Load

cur

rent

[A]

Ambient temperature [℃]

4

2

60 80-40 -20 0 20

8

6

40

12

10

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

Page 92: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Fig.5.10.42

Derating curve

for CHS120483R3

Vin=48V

Fig.5.10.43

Derating curve

for CHS1204805

Vin=48V

Fig.5.10.44

Derating curve

for CHS1204812

Vin=48V

Fig.5.10.45

Derating curve

for CHS1204815

Vin=48V

CHS 5-67

080

Ambient temperature [℃]-40 -20 0 20 40 60

Load

cur

rent

[A

]

9

8

7

6

5

4

3

2

1

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

0

Load

cur

rent

[A]

35

30

25

20

15

10

5

80Ambient temperature [℃]

0 20 40 60-40 -20

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

0

Load

cur

rent

[A]

Ambient temperature [℃]

4

2

80-40 -20 0 20

8

6

40 60

12

10

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

080-40 -20 0 20 40 60

Load

cur

rent

[A]

Ambient temperature [℃]

30

25

20

15

5

10

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

Page 93: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Fig.5.10.46

Derating curve

for CHS1204824

Vin=48V

Fig.5.10.47

Derating curve

for CHS200483R3

Vin=48V

Fig.5.10.48

Derating curve

for CHS2004805

Vin=48V

Fig.5.10.49

Derating curve

for CHS2004812

Vin=48V

CHS 5-68

040 60 80

Ambient temperature [℃]

1

0.5

-40 -20 0 20

Load

cur

rent

[A]

4.5

4

3.5

3

2.5

2

1.50.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

080-20 0 20 40-40

Ambient temperature [℃]

15

10

60

45

40

35

30

25

20

5

Load

cur

rent

[A]

  0.2m/s  0.5m/s  1.0m/s  1.5m/s  2.0m/s

0

Ambient temperature [℃]

Load

cur

rent

[A]

8

2

6

18

16

14

12

10

60

4

-20-40 800 20 40

  0.2m/s  0.5m/s  1.0m/s  1.5m/s  2.0m/s

040 60

Load

cur

rent

[A]

Ambient temperature [℃]

80-40 -20 0 20

60

50

40

30

20

10

  0.2m/s  0.5m/s  1.0m/s  1.5m/s  2.0m/s

Page 94: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Fig.5.10.50

Derating curve

for CHS3002405

Vin=24V

Fig.5.10.51

Derating curve

for CHS3002412

Vin=24V

Fig.5.10.52

Derating curve

for CHS3002415

Vin=24V

Fig.5.10.53

Derating curve

for CHS3002424

Vin=24V

CHS 5-69

0

Ambient temperature [℃]

Load

cur

rent

[A]

4

2

-40 -20 0 20 40 60 80

12

10

8

6 0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

0

Load

cur

rent

[A]

45

40

35

30

25

60

20

15

10

0

5

80-20 20

Ambient temperature [℃]

40-40

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

080

14

12

20

4

-40 400

8

Ambient temperature [℃]

Load

cur

rent

[A]

2

6

18

16

60-20

10 0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

00

Ambient temperature [℃]20 40 60 80

Load

cur

rent

[A] 10

8

6

4

2

-40 -20

14

12

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

Page 95: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Fig.5.10.54

Derating curve

for CHS3002428

Vin=24V

Fig.5.10.55

Derating curve

for CHS3002432

Vin=24V

Fig.5.10.56

Derating curve

for CHS3002448

Vin=24V

Fig.5.10.57

Derating curve

for CHS3004810

Vin=48V

CHS 5-70

0

Ambient temperature [℃]

Load

cur

rent

[A]

2

1

4

3

-40 -20 0 20 40 60 80

6

5

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

3

4

5

6

9

Ambient temperature [℃]

7

8

Load

cur

rent

[A]

2

1

-40 -20 0 20 40 60 80

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

0

0

Ambient temperature [℃]

Load

cur

rent

[A]

4

2

-40 -20 0 20 40 60 80

12

10

8

6 0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

0

Load

cur

rent

[A]

40 60 80Ambient temperature [℃]

-40 -20 0 20

32

28

24

20

16

12

8

4

  0.2m/s  0.5m/s  1.0m/s  1.5m/s  2.0m/s

Page 96: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Fig.5.10.58

Derating curve

for CHS3004812

Vin=48V

Fig.5.10.59

Derating curve

for CHS3004812H

Vin=48V

Fig.5.10.60

Derating curve

for CHS3004815

Vin=48V

Fig.5.10.61

Derating curve

for CHS3004824

Vin=48V

CHS 5-71

0

Load

cur

rent

[A]

16

14

12

10

8

6

4

2

80Ambient temperature [℃]

-40 -20 0 20 40 60

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

0

Ambient temperature [℃]

Load

cur

rent

[A]

8

4

16

12

-40 -20 0 20 40 60 80

24

20

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

0

Load

cur

rent

[A]

12

8

4

28

24

20

16

40 60 80Ambient temperature [℃]

-40 -20 0 20

  0.2m/s  0.5m/s  1.0m/s  1.5m/s  2.0m/s

0

Load

cur

rent

[A]

28

24

20

16

12

8

4

-40 -20 0 20 40 60 80Ambient temperature [℃]

  0.2m/s  0.5m/s  1.0m/s  1.5m/s  2.0m/s

Page 97: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Fig.5.10.62

Derating curve

for CHS3004828

Vin=48V

Fig.5.10.63

Derating curve

for CHS3004832

Vin=48V

Fig.5.10.64

Derating curve

for CHS3004848

Vin=48V

CHS 5-72

0

Load

cur

rent

[A]

8

7

6

5

4

3

2

1

80Ambient temperature [℃]

-40 -20 0 20 40 60

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

0

Ambient temperature [℃]

Load

cur

rent

[A]

4

2

8

6

-40 -20 0 20 40 60 80

12

10

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

0

Ambient temperature [℃]

Load

cur

rent

[A]

4

2

8

6

-40 -20 0 20 40 60 80

12

10

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

Page 98: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Fig.5.10.65

Derating curve

for CHS3804810

Vin=48V

Fig.5.10.66

Derating curve

for CHS3804812

Vin=48V

Fig.5.10.67

Derating curve

for CHS3804812H

Vin=48V

CHS 5-73

00 20 40 60 80

Ambient temperature [℃]

16

12

8

4

-40 -20

Load

cur

rent

[A]

36

32

28

24

200.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

00 20 40 60 80

Ambient temperature [℃]

16

12

8

4

-40 -20

Load

cur

rent

[A]

36

32

28

24

200.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

040 60 80

Ambient temperature [℃]

8

4

-40 -20 0 20

Load

cur

rent

[A]

40

36

32

28

24

20

16

12

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

Page 99: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Fig.5.10.68

Derating curve

for CHS4002412

Vin=24V

Fig.5.10.69

Derating curve

for CHS4002415

Vin=24V

Fig.5.10.70

Derating curve

for CHS4002424

Vin=24V

CHS 5-74

080

Ambient temperature [℃]-40 -20 0 20 40 60

Load

cur

rent

[A]

16

14

12

10

8

6

4

2

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

080

Ambient temperature [℃]-40 -20 0 20 40 60

Load

cur

rent

[A]

32

28

24

20

16

12

8

4

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

080

Ambient temperature [℃]-40 -20 0 20 40 60

Load

cur

rent

[A]

32

28

24

20

16

12

8

4

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

Page 100: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Fig.5.10.71

Derating curve

for CHS4002428

Vin=24V

Fig.5.10.72

Derating curve

for CHS4002432

Vin=24V

Fig.5.10.73

Derating curve

for CHS4002448

Vin=24V

CHS 5-75

0

Load

cur

rent

[A]

8

7

6

5

4

3

2

1

80Ambient temperature [℃]

-40 -20 0 20 40 60

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

0

Load

cur

rent

[A]

16

14

12

10

8

6

4

2

80Ambient temperature [℃]

-40 -20 0 20 40 60

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

080

Ambient temperature [℃]-40 -20 0 20 40 60

Load

cur

rent

[A]

16

14

12

10

8

6

4

2

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

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Fig.5.10.74

Derating curve

for CHS4004810

Vin=48V

Fig.5.10.75

Derating curve

for CHS4004812

Vin=48V

Fig.5.10.76

Derating curve

for CHS4004812H

Vin=48V

Fig.5.10.77

Derating curve

for CHS4004815

Vin=48V

CHS 5-76

0

Load

cur

rent

[A]

32

28

24

20

16

12

8

4

80Ambient temperature [℃]

-40 -20 0 20 40 60

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

0

Load

cur

rent

[A]

45

40

35

30

25

20

15

10

5

-40 60 80Ambient temperature [℃]

-20 0 20 40

  0.2m/s  0.5m/s  1.0m/s  1.5m/s  2.0m/s

0

35

30

Load

cur

rent

[A] 25

20

15

10

5

-40 -20 0Ambient temperature [℃]

20 40 60 80

  0.2m/s  0.5m/s  1.0m/s  1.5m/s  2.0m/s

0

Load

cur

rent

[A]

35

30

25

20

15

10

5

-40 -20 80Ambient temperature [℃]

0 20 40 60

  0.2m/s  0.5m/s  1.0m/s  1.5m/s  2.0m/s

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Fig.5.10.78

Derating curve

for CHS4004824

Vin=48V

Fig.5.10.79

Derating curve

for CHS4004828

Vin=48V

Fig.5.10.80

Derating curve

for CHS4004832

Vin=48V

Fig.5.10.81

Derating curve

for CHS4004848

Vin=48V

CHS 5-77

0

5

4

3

2

1

-40 -20

7

6

Load

cur

rent

[A]

0Ambient temperature [℃]

20 40 60 80

8

9

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

080

Ambient temperature [℃]-40 -20 0 20 40 60

Load

cur

rent

[A]

16

14

12

10

8

6

4

2

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

080

Ambient temperature [℃]-40 -20 0 20 40 60

Load

cur

rent

[A]

24

21

18

15

12

9

6

3

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

080

Ambient temperature [℃]-40 -20 0 20 40 60

Load

cur

rent

[A]

24

21

18

15

12

9

6

3

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

Page 103: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Fig.5.10.82

Derating curve

for CHS5004812

Vin=48V

Fig.5.10.83

Derating curve

for CHS7004812H

Vin=48V

CHS 5-78

080

Ambient temperature [℃]-20 0 20 40

20

15

10

5

-40 60

Load

cur

rent

[A]

45

40

35

30

25

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

0

Load

cur

rent

[A]

60

50

40

30

20

10

-40 -20 0 20 40 60 80

Ambient temperature [℃]

0.2m/s0.5m/s1.0m/s1.5m/s2.0m/s

Page 104: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

5.11 Input Derating

5.11.1 CHS120 Input Derating

CHS120 has derating by input voltage is required. shown Fig.5.11.1

Fig.5.11.1

Input derating curve

for CHS120

CHS 5-79

Page 105: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

6.1 Output voltage adjusting method by external potentiometor

Output voltage is adjustable by the external potentiometer.When the output voltage adjustment is used, note that the overvoltage protection circuit operates when the output voltage is settoofor CHSIf the output voltage drops under the output voltage adjustmentrange, the Low voltage protection operates.By connecting the external potentiometer (VR1) and resistors (R1,R2),output voltage becomes adjustable, as shown in Fig.6.1.1.Recommended external parts are shown in Table 6.1.1.The wiring to the potentiometer should be as short as possible.The temperature coefficient could become worse, depending onthe type of a resistor and potentiometer. Following parts are recommendedfor the power supply. Resistor : Metal film type, coefficient of less than ±100ppm/C Potentiometer : Cermet type, coefficient of less than ±300ppm/CWhen the output voltage adjustment is not used, open the TRMpin respectively.The changes speed of the TRM voltages should be less than 0.15V/ms.

Fig.6.1.1

Output voltage

control circuit

Table 6.1.1

Recommended value of

external potentiometer

& resistor

CHS 6-1

6. Adjustable voltage range2.1 Pin configuration6. Adjustable voltage range

Page 106: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

6.2 Output voltage decreasing by external resistor

By connecting the external resistor (RD), output voltage becomesadjustable to decrease.The external resistor (RD) is calculated by the following equation.

Fig.6.2.1

Connection for

output voltage decreasing

6.3 Output voltage increasing by external resistor

By connecting the external resistor (RU), output voltage becomesadjustable to increase.The external resistor (RU) is calculated by the following equation.

Fig.6.3.1

Connection for

output voltage increasing

CHS 6-2

Page 107: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

6.4 Input voltage derating

When input voltage is 18-21.5V DC or 36-44V DC, the output voltage adjustment range becomes as shown in Fig.6.4.1.

Fig.6.4.1

CHS output voltage

adjustment range

CHS 6-3

Page 108: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

7.1 Overcurrent Protection

Over Current Protection (OCP) is built in and works at 105% of the rated current or higher.However, use in an over current situation must be avoided whenever possible. The outputvoltage of the power module will recover automatically if the fault causing over current is corrected.

When the output voltage drops after OCP works, the power module enters a "hiccupmode" where it repeatedly turns on and off at a certain frequency.

7.2  Overvoltage protection

The overvoltage protection circuit is built-in. The DC input should be shut down if overvoltage protection is in operation.The output voltage of the power module will recover automatically if the fault causing over voltage is corrected.

Remarks :Please note that devices inside the power supply might fail when voltage more thanrated output voltage is applied to output pin of the power supply. This could happenwhen the customer tests the overvoltage performance of the unit.

7.3 Thermal protection

When the power supply temperature is kept above 120℃, the thermal protection willbe activated and simultaneously shut down the output.The output voltage of the power supply will recover automatically if the unit is cool down,

● Option "-U"

Option "-U" means output is shut down when the abovementioned protection circuit is activated.If this happens, protection circuit can be inactivated by cycling the DC input power offfor at least 1 second or toggling Remote ON/OFF signal.

CHS 7-1

2.1 Pin configuration7. Protect circuit

Page 109: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Remote ON/OFF circuit is built-in on the input side (RC).The ground pin of input side remote ON/OFF circuit is "-VIN" pin.

Table 8.1.1

Specification of

Remote ON/OFF

(CHS80,CHS200)

When RC is "Low Level,fan out current is 0.1mA typ.

When Vcc is applied, use 2.0≦Vcc≦7.0V.

Table 8.1.2

Specification of

Remote ON/OFF

(CHS60, CHS120, CHS300

CHS380, CHS400

CHS500, CHS700) When RC is "Low Level,fan out current is 0.1mA typ.

When Vcc is applied, use 4.0≦Vcc≦7.0V.

When remote ON/OFF function is not used, please short between RC and-VIN (-R: open between RC and -VIN).

Fig 8.1.1

RC connection

example

CHS 8-1

Optional -R PositiveL level(0 - 0.8V) or short OFF

H level(2.0 - 7.0) or opent ON

PositiveOptional -R

OFFH level(4.0 - 7.0V) or opent

ONH level(4.0 - 7.0) or opent

ON/OFFlogic

Between RC and GNDOutputvoltage

Standard NegativeL level(0 - 0.8V) or short ON

H level(2.0 - 7.0V) or opent OFF

OFFL level(0 - 0.8V) or short

ONL level(0 - 0.8V) or shortNegativeStandard

Outputvoltage

Between RC and GNDON/OFF

logic

2.1 Pin configuration8. Remote ON/OFF

Page 110: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

9.1 When the remote sensing function is not in use

Fig. 9.1.1

Connection

when the remote

sensing is not in use

When the remote sensing function is not in use, it is necessary to confirm that pins are shorted between +S and +VOUT ,and between -S and -VOUT.Wire between +S and +VOUT ,and between -S and -VOUT as short as possible.Loop wiring should be avoided.This power supply might become unstable by the noise coming from poor wiring.

9.2 When the remote sensing function is in use

Fig. 9.2.1

Connection

when the remote

sensing is in use

Twisted-pair wire or shield wire should be used for sensing wire.Thick wire should be used for wiring between the power supply and a load.Line drop should be less than 0.3V.Voltage between +VOUT and -VOUT should remain within the output voltage adjustment range.If the sensing patterns are short, heavy-current is drawn and the pattern may be damaged.The pattern disconnection can be prevented by installing the protection parts as close as possible to a load.Output voltage might become unstable because of impedance of wiring and load condition when length of wire exceeds 40cm.

CHS 9-1

2.1 Pin configuration9. Remote sensing

Page 111: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

10.1 Series operation

Series operation is available by connecting the outputs of two or more power supplies, as shown below. Output current in series connection should be lower than the lowest rated current in each unit.

Fig. 10.1.1

Example of

Series operation

10.2 Parallel operation (CHS400 / CHS500 option "-P")

Sensing and adjustment of the output voltage are not possible at the time of the use with option.

As variance of output current drew from each power supply is maxmum 10%, thetotal output current must not exceed the value determined by the following equation.

( Output current the Parallel operation )=( the rated current per unit ) × ( nunber of unit ) × 0.9

When the number of units in parallel operation increases, input current increaseat the same time. Adequate wiring desing for input circuitry is required, such as

circuit pattern, wiring and currentcapacity for equipment.Total number of units should be no more than 3 pieces.

Thick wire should be used for wiring between the power supply and load, and line dropshould be less than 0.3V.Connect each input pin for the lowest possible impedance.When the number of the units in parallel operation increases,inputcurrent increases.Adequate wiring design for input circuitry such as circuit pattern, wiring and current for equipment is required.

Fig. 10.2.1

Example of

parallel operation

CHS 10-1

2.1 Pin configuration10. Serise operation / Parallel operation / Redundancy operation

Page 112: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

10.3 Redundancy operation

Redundancy operation is available by wiring as shown below.

Fig. 10.3.1

Example of

Redundancy operation

Even a slight difference in output voltage can affect the balancebetween the values of I1 and I2.Please make sure that the value of I3 does not exceed the ratedcurrent of the power supply.

I3 ≦ the rated current value

CHS 10-2

Page 113: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

These are packed in a tray(Fig.11.1.1 to 11.1.3)Please order "CHS -S" for tray type packaging.Capacity of the tray is 15max.In case of fractions, the units are stored in numerical order.

Fig. 11.1.1

Delivery package

information(CHS60)

CHS 11-1

2.1 Pin configuration11. SMDtype(option "-S")package information

Page 114: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Fig. 11.1.2

Delivery package

information(CHS80)

CHS 11-2

Page 115: Application manual for CHS series VER4 · Applications Manual 1. Ordering information 2. Pin configuration/ External view Pin configuration External view 3. Do's and Don'ts for

Fig. 11.1.3

Delivery package

information(CHS120)

CHS 11-3