power management & amplifiers - Компэл we have parts for all of these topologies flyback...
TRANSCRIPT
1 April 2012
Power Management & Amplifiers
April 2012
2
agenda
• Power Conversion: AC-DC
• Power Conversion: DC-DC
• Linear Voltage Regulators
• Signal & Interfaces
• Low Power Analog
3 April 2012
Power Conversion
AC-DC
4
We have parts for
all of these
Topologies
forwardflyback
half-bridge
push-pull
full-bridge
2-transistor forward
5
0
50
100
150
200
250
300
350
Re
gulato
r Re
q.
Cu
rren
t "Be
st In class"
NC
P1246 /4353
NC
P1249 /4353
Po
we
r m
W
Regulator Req.
Current "Best In class"
NCP1246 /4353
NCP1249 /4353
No Load Standby Power
Regulatory
Requirements
300 mW
30 mW
10 mW – 16 mW
No
Load
No
Load
No
Load
Current
Best in class
Performance
ON Products
2012
NCP1246/4353
NCP1249/4353
Industrial ctm asked for
< 100 mW as min
Computing/Gaming asked
for < 20 mW
6
NCP1255Flyback for Adapters
Peak power Excursion
SOIC8
NCP1271Fixed Freq Flyback
HV Startup
SOIC7
Generic SMPS AC-DC Controllers50 W < PSU < 150 W
NCP1219Fixed Freq Flyback
NCP1271 w/ DSS
SOIC7
NCP1234Flyback for Adapters
<100 mw Standby Adapter
SOIC7
NCP1236Flyback for Adapters
NCP1234 with BO
SOIC7
NCP1246*Flyback for Adapters
<20 mW Standby
SOIC7
Flyback
Production Development Planning
Power / Features
NCP1380QR for Adapters
LV with Valley Lockout
SOIC8
NCP1398LLC Controller
Upgrade 1397
SOIC16 Resonant
NCP1397LLC Controller
Upgrade to 1396
SOIC-16
Market Application: AC
Adapters (Notebooks &
Printers), & Open Frame
PSU (DVDs & STBs).
Meeting EPA 2.0
Market Application: AC
Adapters (Notebooks &
Printers), & Open Frame
PSU (DVDs & STBs).
Exceeds EPA
requirements
| | | | | | | | | | | | | | | | | |
| 2010 | 2011 | 2012 | 2013 |
7
The NCP1234/6 are the next generation controllers optimized for challenging power supplies where high efficiency
across the entire load range is needed.
High-voltage current source
with built-in Brownout
Freq. reduction in light load
conditions and skip mode
Vcc OVP
Adjustable Over Power
Protection
Fewer components and
rugged design
Extremely low no-load
standby power
Simple option to alter
the max. peak current
set point at high line
AC adapters (notebooks and printers)
Open frame PSU (DVD, STB)
Others Features
Ordering & Package Information
Market & Applications
NCP1234/6 – High Voltage Fixed Frequency Controller
Latch-off input for severe fault conditions, allowing
direct connection of NTC
Timer-based protection: auto-recovery or latched
Built-in ramp compensation
Frequency jittering for a softened EMI signature across
entire load range
Vcc operation up to 30 V
Part Frequency Brownout OCP Fault Response
NCP1234AD65R2G 65 kHz No Latched
NCP1234BD65R2G 65 kHz No Auto-recovery
NCP1234AD100R2G 100 kHz No Latched
NCP1234BD100R2G 100 kHz No Auto-recovery
NCP1236AD65R2G 65 kHz Yes Latched
NCP1236BD65R2G 65 kHz Yes Auto-recovery
NCP1236AD100R2G 100 kHz Yes Latched
NCP1236BD100R2G 100 kHz Yes Auto-recovery
Unique Features Benefits
Value Proposition
Application Data
8
NCP1234/6 – Frequency foldback
FB
Fsw
fOSC
VFBSKIPIN VFBFOLD
fOSC(min)
Skip
Increased efficiencySwitching frequency
lowered at light load
No audible noiseSwitching frequency
clamped above 22 kHz
9
The NCP1246 is a fixed frequency, current mode controller that is specifically optimized to minimize power
consumption during no load and light load conditions. No load stand-by below 30 mW at high line
Active x-cap discharge built-in
to the device
Ability to enter a Power
Savings “Sleep State”,
providing hiccup mode of
the output voltage
Freq. reduction in light load
conditions and skip mode
Eliminates the need for
discharge resistors
saving power
Significantly reduces
power consumption in
no load conditions
High eff across line /
load range
AC adapters (notebooks and printers)
Open frame PSU (DVD, STB)
Others Features
Ordering & Package Information
Market & Applications
NCP1246 – Fixed Frequency Controller for Low Standby
Latch-off input for severe fault conditions, allowing
direct connection of NTC
Timer-based protection: auto-recovery or latched
Built-in ramp compensation
Frequency jittering for a softened EMI signature across
entire load range
Vcc operation up to 28 VPart Frequency OCP Fault Response
NCP1246AD65R2G 65 kHz Latched
NCP1246BD65R2G 65 kHz Auto-recovery
NCP1246AD100R2G 100 kHz Latched
NCP1246BD100R2G 100 kHz Auto-recovery
Unique Features Benefits
Value Proposition
Application Data
10
Adapter Primary Controller used in Tandem w/ Secondary Side Controllers
• < 20 mW No Load • 65 W Output Power
Typical Layout Schematic for the
NCP1246 (Primary) w/ the NCP435x
(Secondary Side) Controller.
11
| | | | | | | | | | | | | | | | | |
| 2010 | 2011 | 2012 | 2013 |
NCP1250/1Flyback for Netbooks
Low Voltage
TSOP6
NCP1012-15Isolated Flyback
11 Ohm
PDIP7 / SOT223 / GW7
NCP1027/8Isolated Flyback
5.8 Ohm
PDIP7
NCP1072Isolated Flyback
11 Ohm / 250 mA
PDIP7 / SOT223
NCP1126Isolated Flyback
6 Ohm
PDIP7
NCP1075Isolated Flyback
11 Ohm / 450 mA
PDIP7 / SOT223
Controller
Integrated
MOSFET
NCP1253Flyback for Tablets
1251 w/o Latch/OPP
TSOP6
NCP1010/11Isolated Flyback
23 Ohm
PDIP7 / SOT223 / GW7
Market Application: Low Power
Open Frame (DVDs &
STBs), Netbook & Notebook
Adapters, & Flat TV Auxiliary
Supply.
Cost Sensitive & Meets EPA 2.0
AC-DC Low Power (PSU < 50 W)Power / Features
Market Application: White
Goods, Smart Meters, ATX &
Flat Screen TVs.
<60 mW No Load, 5-10W
Output Power.
NCP1254Flyback for Tablets
Peak power Excursion
TSOP6
NCP1255Flyback for Adapters
Peak power Excursion
SOIC8
Production Development Planning
12
NCP1250/NCP1251 - 6 pin Fixed Frequency Controller
The NCP1250/1 are fixed frequency, PWM controllers designed for <50 W adapters offered in a tiny, six pin package.
With frequency foldback and skip cycle, the NCP1250/1 ensures a high efficiency design across the entire load range.
65 kHz or 100kHz fixed
frequency with dither
Frequency Foldback with
Skip Mode
Over Power Protection
Vcc OVP (NCP1251)
Improved EMI performance
Improved light-load
efficiency
Improved protection
OVP Input for Improved
Robustness
100 ms Timer−Based Auto−Recovery Short−Circuit
Protection
Internal fixed 4ms soft-start
Less than 100mW Standby Power at High Line
ESP 2.0 Compliant
Low Power Open frame (DVD, STB)
Netbook & Notebook Adapters
Flat TV auxiliary supply
Market & Applications
Ordering & Package Information
Other Features
Unique Features Benefits
Value Proposition
Application Data
13
Examples of NCP1250 designs
12V - 40W Demoboard
14
NCP1255 - Current-Mode PWM Controller for Off-line Power Supplies
Featuring Peak Power Excursion
The NCP1255 is a 8-pin current-mode PWM controller that can deliver a rugged, high performance offline power supply. With
a supply range up to 28 V, the controller hosts a jittered 65-kHz switching circuitry operated in peak current mode control.
Printer Power Supplies
AC-DC Adapters
Game Stations
Market & Applications
Ordering & Package Information
Other Features Internal and adjustable overpower protection (OPP)
Internal fixed 4ms soft-start
Frequency foldback and skip mode for improved
efficiency
Frequency jittering for improved EMI
65-kHz fixed-frequency current-mode control operation
with 100-kHz excursion
Peak Power Excursion for
peak power requirements
Adjustable Brownout
Protection
Dual level over current
protection
Temporarily increases
switching frequency for
power boost
Clean stop and start in case
of fault
Protects against overload
and short circuit
ControllerFrequency OCP
NCP1255AD65R2G65 kHz Latched
NCP1255BD65R2G65 kHz Autorecovery
NCP1255AD10R2G100 kHz Latched
NCP1255BD10R2G100 kHz Autorecovery
Eris
Vbulk
..
ramp
comp.
OPP
Vout
OVP
.
1
2
3
4 5
8
6
7
Eris
BO
Unique Features Benefits
Value Proposition
Application Data
15
The NCP1072/5 products integrate an 11 Ohm, 700V MOSFET providing for a switching power supply capable of
delivering up to 15 watts of output power.
11 Ohm, 700 V FET
Frequency foldback and skip
mode
Internal HV Startup featuring
Dynamic Self Supply (DSS)
Ease of design
Improved efficiency at light
loads
Loss less startup sequence
NCP1072/75 – 11 Ohm 700V Integrated Switcher
Others Features
Ordering & Package Information
Auxiliary Supply
White Goods
E-Meters
1
2
3
4 5
8
7
Pin to Pin with NCP101x Family
Short circuit protection Independent of the aux. Winding
when the DSS is used
Ipeak 250 mA or 450 mA
Soft start: 1 ms
Internal switching frequency: 65, 100 and 130 kHz
Frequency jittering
Over Voltage Protection – Vcc pin
Market & Applications
Unique Features Benefits
Value Proposition
Application Data
16
Key New Features
Frequency foldback with jittering
Improved light load efficiency
Improved EMI over the entire load range
Very low Icc in standby mode
No load: 300 uA
Input power: under 50 mW at 265 Vac, no load
Timer based overload protection and SCP
Provides more robust protection without worrying about the
coupling of the auxiliary winding
Vin AC Line detection
This function inhibits operation at low input voltage
Doesn’t require any additional external circuitry.
17
NCP107X – 12V/850mA Design example
Output voltage: 12 V, 5%
Nominal load current: 0.85 A
Input power less than 50 mW at 265 Vac, no load
Short-circuit protection with auto-recovery
Input power under 100 mW at Pout = 20 mW is a challenge!
C9
10 nF
D4
1N4148
R7
150k
C8
2.2 nF
D3
MUR160
D2
MBRS360T3
C1
220 nF
L1
2x15mH +
-
IN
B1
DF08M
T1_aux
R_L322
15
C2
47u
C10
47u
400V
35V
2
1 J3
R2
1.5k
IC1
SFH615A-2
1
2
3
4 5
8
7
Vcc
NC
Gnd
FB
Gnd
Gnd
Drain
IC3
NCP1075
400V 1W
T1
MA5597-AL
C6a
470 uF
C6b
470 uF
16V 16V
L2
10 uH
C7
470 uF
16V
IC2
NCP431
R3
1k
C4
100nF
R5
82.5k
R6
21.5kC5
2.2 nF
JP1
Un
ive
rsa
l In
pu
t
C3
100 nF
18
NCP107X – High efficiency over load range
High efficiency
79%
80%
81%
82%
83%
84%
85%
86%
87%
25% 50% 75% 100%
Effic
iency
Pout
100 Vac 115 Vac 230 Vac 264Vac
19
NCP107X – Light load and no load
Low consumption at light load and no load
100 Vac 115 Vac 230 Vac 265 VacInput power @
no load26 mW 28 mW 38 mW 45 mW
Input power @ 20 mW output
75 mW 75 mW 87 mW 89 mW
20
Controllers Output Power Positioning
Part number Topology 0-25 W 25-50 W 50-75 W 75-150 W 150-250 W 250-500 W >500 W
NCP1200 Flyback
NCP1203 Flyback
NCP1216/16A Flyback & Forward
NCP1217/17A Flyback & Forward Forward
NCP1219 Flyback
NCP1230 Flyback
NCP1234/6 Flyback
NCP1237/38 Flyback
NCP1250/1 Flyback
NCP1252 Flyback & Forward Forward
NCP1271 Flyback
NCP1288 Flyback
NCP1205 Flyback
NCP1207A/B/NCP1308 Flyback
NCP1337/38 Flyback
NCP1377/77B/78 Flyback
NCP1379 Flyback
NCP1380 Flyback
NCP1381/82 Flyback
NCP1351 Flyback
NCP1392/93 Resonant
NCP1395 Resonant
NCP1396 Resonant
NCP1397 Resonant
Recommended Better fit exists Planning
Fixed Frequency Fixed ton - Var toff Quasi Resonant Resonant
Development
21
NCP1608CRM PFC
1607 with OTA EA
SOIC8
Power / Features
Generic SMPS PFC Controllers
NCP1605ACRM PFC
HV Startup
SOIC16
| | | | | | | | | | | | | | | | | |
| 2010 | 2011 | 2012 | 2013 |
NCP1611CRM PFC
CCFF PFC for Flat TV
SOIC8
NCP1612CRM PFC
1611 with PFCOK
SOIC10
NCP1607CRM PFC
Upgrade to 1606
SOIC8
NCP1652ASingle Stage PFC
Active Clamp / Sync Rect
SOIC16
Market Application: Front
Ends For Distributed
Power Systems, High-
Power Battery
Chargers, Notebook
Adapters.
Market Application: Computer
Power Supplies, High-Power
Adapters, LED Lighting, & Flat TVs.
High Efficiency across a broad
range of loads w/ a high level of
safety protection.
Production Development
22
The NCP1611 is a robust feature-rich Current Control Frequency Fold back PFC controller optimized to achieve high
efficiency across a broad range of load while offering a complete suite of system level safety protection.
CrM w/current controlled
frequency foldback
Skip mode near zero
crossing
Bypass diode short
protection
Optimizes efficiency
across load range
Enhanced light load
efficiency
Robust safety
characteristics
Fast load transient behavior
Output over and under-voltage protection
Open feedback disable protection
OCL, UVLO, brown-out protection
Soft-Start for smooth start-up operation
High drive capability: -500 mA / +800 mA
Thermal shutdown
Flat TV
Computer Power Supplies
High Power Adapters
LED Lighting and Ballasts
NCP1611 - High Efficiency Compact PFC
Others Features
Ordering & Package InformationMarket & Applications
Brownout
Frequency Foldback/Skip
ControlInterleaved
CS/ZCD
Device Package Option
NCP1611ADR2G SOIC-8 Latch
NCP1611BDR2G SOIC-8 Auto-Recovery
Unique Features Benefits
Value Proposition
Application Data
23
The NCP1612 is a robust feature-rich Current Control Frequency Fold back PFC controller optimized to achieve high
efficiency across a broad range of load while offering a complete suite of system level safety protection.
CrM with Current Controlled
Frequency Foldback
Skip Mode near zero
crossing
Bypass Diode Short
Protection
Optimizes efficiency
across load range
Enhanced light load
efficiency
Robust safety
characteristics
Output Over and Under-voltage Protection
Open Feedback disable protection
OCL, UVLO, Brown-Out Protection, pfc okay
Soft-Start for smooth start-up operation
High Drive Capability: -500 mA / +800 mA
Thermal Shutdown
Flat TV
Computer Power Supplies
High Power Adapters
LED Lighting & Ballasts
NCP1612- Enhanced High Efficiency PFC
Others Features
Ordering & Package InformationMarket & Applications
Latched OVP & Bulk UV
Frequency Fold back/Skip
Control
Interleaved
CS/ZCD
PFC OK
Device Package Option
NCP1612ADR2G SOIC-10 Latch
NCP1612BDR2G SOIC-10 Auto-Recovery
Unique Features Benefits
Value Proposition
Application Data
24
NCP161x Efficiency Performance
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
0 10 20 30 40 50 60 70 80 90 100
Eff
icie
nc
y (%
)
Relative Output Power (%)
CCFF with Skip
CCFF with Skip Off
CRM
Vin= 230 Vac, Pout(max) = 160 W85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
0 10 20 30 40 50 60 70 80 90 100
Eff
icie
nc
y (%
)
Relative Output Power (%)
CCFF with Skip
CCFF with Skip Off
CRM
Vin= 115 Vac, Pout(max) = 160 W
By adding a DC offset to the FFcontrol pin we can compare operation
in different modes
0.9V offset disables skip mode
2.5V offset forces the NCP1611 to operate in classic CRM mode
CCFF dramatically improves efficiency at light load over CRM
25
PFC – Output Power Positioning
Part number 25-75 W 75-150 W 150-250 W 250-500 W >500 W
NCP1601 NCP165X
NCP1605 NCP165X
NCP1605A NCP165X
NCP1606
NCP1607
NCP1608
NCP1611/2
NCP1631 NCP1606/7/8
NCP1650 NCP1653/54/55
NCP1651
NCP1652
NCP1653/A NCP1605/06/07
NCP1654 NCP1605/06/07
Recommended Develop. Planning Exploring
Continuous conduction Mode
Fixed Freq. Discontinous Conduction & Critical Conduction Modes
Critical Conduction Mode
Better fit exists
26
Generic SMPS Secondary Side Controllers
NCP100Shunt Reference
0.9V to 6V
SOT23-3 / TSOP5
TLV431Shunt Regulator
1.24V - 16V
SOT23-3
TL431Shunt Regulator
2.5V to 36V
TO92 / SO8 / u8 / PDIP8
NCP4303Sync Rect Controller
Parasitic Compensation
SOIC8
NCP431Shunt Regulator
2.5V to 36V
SOT23 / SO8 / TO92
NCP4353*S.S. Low Power Ctlr
CCCV & CV Mode
TSOP6
NCP4354*S.S. Low Power Ctlr
CCCV & CV Mode w/ LED
DvrSOIC8
NCP435xCCCV Controller
Secondary Side
TSOP6
Market Application: Notebook Adapters &
Ultra Slim Flat TVs.
Designed for use w/NCP1249 & NCP1937
to achieve <10 mW no load consumption
or use NCP1246 to achieve <20 mW.
Market Application: Precision Voltage
Reference, Charger, Switching Power
Supply, Instrumentation, & Voltage Adapters
Offering a significantly lower minimum
cathode current (50 µA typical).
| | | | | | | | | | | | | | | | | |
| 2010 | 2011 | 2012 | 2013 |
Pin to Pin
Compatible
*Kit Item
w/NCP1249,
NCP1937 or
NCP1246
Provides a Total
Solution
Production Development
27
The NCP431 series of devices represents an upgrade to the industry standard TL431 by offering a significantly lower
minimum cathode current, 50µA typical, saving power consumption in the power supply
• Sink Current Capability of
50µA to 100 mA
• Programmable Output
Voltage to 36 V
• Low Dynamic Output
Impedance
• Wider range of features
delivers more diversity in
a greater range of
applications
• Equivalent Full−Range Temperature Coefficient of 50
ppm/ºC Typical
• Temperature Compensated for Operation over Full Rated
Operating Temperature Range
• Low Output Noise Voltage
• Pb−Free Packages are Available
• Voltage Adapters
• Switching Power Supply
• Precision Voltage Reference Charger
NCP431 - Low Cathode Current Programmable Precision Reference / Shunt Regulator
Others Features
Ordering & Package Information
Market & Applications
Unique Features Benefits
Value Proposition
Application Data
28
The NCP4353 detects no load conditions and enters the primary controller into an ultra low frequency skip mode for
reduced standby consumption. It is designed for use with the NCP1246 to achieve <15mW no load power consumption.
• Detects no load to enter
power supply into an ultra
low frequency skip mode
• Only one opto coupler
required for feedback and
OFF control
• Increased no load
efficiency (<15mW)
• Fewer components
• Integrated TL431 feedback
• Vsupply up to 30 V
• Adjustable UVLO
• 1.25 V reference with 1% accuracy
• Icc < 100uA
• Notebook Adapters
• Ultra Slim Flat TV
NCP4353 - Secondary Side Controller for Low Standby Power
Others Features
Market & ApplicationsOrdering & Package Information
Opto
ON / OFF
&
Feedback
D1
C1 C2
VS
(12 to 20V)
OFF SupplyD2
R2
R1
R3
R4 R5
Vmin
Adjust
OFF
mode
Adjust
GND
DRIVE
Regul
OFF
UVLO
Vref1 = 1.25V
SW1
Vref1 = 1.25V
Vcc Vcc
management
PonRESET
Vcc Vdd Voltage Regulation
OFF mode
Detection
Output Voltage
Restart Level
OTA
PoffRESET
C9
R9
Regul
R6
C3
10% ,Duty 1 kHz
Oscillator
IOpto
R9
SW3
I1
R9 to
Adjust
Psave
Unique Features Benefits
Value Proposition
Application Data
29
Tools & Support
30 April 2012
Power Conversion
DC-DC
31
1
2
3
4
5
6
7
8
9
Io-M
ax
(A)
Operating Voltage MAX (V)
12 24
●Med-voltage Regulator- 3.0-40Vin / 1-5A / 52-350 kHz
●High-voltage Controller (ext MOSFET)- 8.0-100Vin / 15A capable driver / 50-500 kHz
●Low-voltage Regulator- 4.5-19Vin / 3-10A / 350-1000 kHz
●Low-voltage Switching Regulator
- 2.7-5.5Vin / 1A-3A / ~1MHz
10
5 40 100
●Med-voltage Regulator & Controllers- 4.5-28Vin / 1-7A / 350-1000 kHz
- 4.5-28Vin / 20A capable driver / 300-2400 kHz
DC-DC Power Supply Map
ON-Line Selection Tool
32
Example Architecture
+12V +/-10%
NCP3126
NCP3127
NCP3125
+5.0V @ 3.4A
+3.3V @ 2.3A
+1.8V @ 1.2A
+1.2V @ 4A
NCP1599 +0.9V @ 3A
Features:
- High Efficiency
- Cost driven
NCP3125
33
Example Architecture
NCP3172+12V +/-20%
NCP3170
NCP3170
NCP3172
+5.0V @ 2.5A
+3.3V @ 1.8A
+1.8V @ 1.6A
+1.2V @ 5A
NCP1595 +0.9V @ 1A
Features:
- Fsw @ 1MHz
- Light load efficiency
- High efficiency
34
Example Architecture
+5V +/-5%
NCP1597
NCP1595
NCP1593
+5.0V @ 3A
+3.3V @ 2A
+1.8V @ 1A
+1.2V @ 3A
NCP1599 +0.9V @ 2.5A
Features:
- High Fsw
- Light load efficiency
- Low Vin
35
Example Architecture
NCP3020
+24V +/-10%
or
+12V +/-20%
NCP3020
NCP1599
NCP1599
+12V @ 6A
+5V @ 8A
+1.8V @ 2A
+2.5V @ 3A
NCP3155 +1.2V @ 3A
Features:
-HV input
-High Efficiency
36
Low Current PWM Buck Regulator (<30V)
| | | | | | | | | | | | | | | | | |
| 2010 | 2011 | 2012 | 2013 |
Production Development
NCP3125/6/7
•4A/3A/2A sync
•4.5-13.2V
•350k / 600kHz
•SOIC-8
NCP3172
•5A sync buck
•4.5-18V
•500k / 1MHz
•DFN-8
NCP1593
• 3A sync buck
• Up to 5V input
• 1MHz
• DFN-10
• 90/60mohm Rdson
NCP5252
• 2A sync
• 4.5-13.2V
• Up to 1MHz
• QFN 3x3
• Light load efficiency
NCP1595/7/9
• 1.5A/2A/3A sync
• Up to 5V input
• MHz
• QFN 3x3
• Light load efficiency
NCP3170
• 3A sync buck
• 4.5-18Vin
• 500KHz / 1MHz
• SOIC-8
• 90/25mohm Rdson
NCP3171
•3A sync buck
•4.5-18V
•No PFM mode
•SOIC-8
NCP3180
• 3A sync buck
• 4.5-24Vin
• 500KHz / 1MHz
• SOIC-8
• 70/20mohm Rdson
37
NCP3125 – 4A DC-DC Synchronous Regulator
The NCP3125 is an integrated wide input voltage high-output current synchronous PWM buck converter. The 4A
output in a standard SOIC-8 package makes the part ideal for high power density designs.
•Highly integrated 4A
solution
•Integrated FET (50m HS
& 30m LS)
•High Power Density ;
Reduced Board Space
•Highly Efficient System
(>90% max efficiency)
•350 / 600kHz Switching frequency
•Enable/Disable through the COMP pin
•Programmable current limit
•0.8V +/-1% accurate internal reference
• Computing: Power supply
• Industrial: Power supplies, Base Station, Broadband &
Optical Communication Infrastructure
• SOIC-8
• NCP3125ADR2G
•Tj from -40°C to 125°C
Others Features
Ordering & Package Information
Market & Applications
Unique Features Benefits
Value Proposition
Application Data
Adjustable Current Limit
38
High Current Buck Regulator (<30V)
| | | | | | | | | | | | | | | | | |
| 2010 | 2011 | 2012 | 2013 |
Production Development
NCP3101C
•6A sync
•2.7-18V
•275kHz
•18/18mohm Rdson
NCP1594
• 6A sync buck
• 2.7-5.5Vin
• Up to 2MHz
• QFN 4x4mm
• MAX15039
NCP3102C
•10A sync
•2.7-18V
•275kHz
•8/8mohm Rdson
NCP159x
• 4A sync buck
• 2.7-5.5Vin
• Up to 2 MHz
• QFN 4x4mm
• MAX15038
NCP3104
•10A sync buck
•2.7-18Vin
•600kHz
•8/8mohm Rdson
NCP3103
•6A sync buck
•2.7-18Vin
•600kHz
•18/18mohm Rdson
39
PWM Buck Regulator (20V~100V)
| | | | | | | | | | | | | | | | | |
| 2010 | 2011 | 2012 | 2013 |
Production Development
NCP3155
•3A sync buck
•4.7-24V
•500k / 1MHz
•SOIC-8
NCP3156
•5A sync buck
•4.7-24V
•500k / 1MHz
•DFN-10
NCP3157
•5A sync buck
•4.7-28V
•500k / 1MHz
•DFN-10
NCP3063/4
•1.5A non-sync
•3-40V
•Up to 250kHz
•SOIC-8/PDIP/DFN
40
NCP1577
• NCP1576 (similar)
• 2.7-15V input
• 300/600/1000MHz
• TSSOP-20
NCP3012
•75kHz
NCP3011
•PG/EN/SYNC
•400kHz
PWM Controllers
| | | | | | | | | | | | | | | | | |
| 2010 | 2011 | 2012 | 2013 |
Production Development
NCP3021
•4.7-28V input
•EN pin
•300/600/1000kHz
•SOIC-8EP
NCP1576
•2.7-6Vin
•Up to 2MHz
•Charge pump
•QFN 4x4mmNCP3030
•1.4/2.4MHz
NCP3050
• Dual sync buck
• 4.7-28Vin
• 300/600/1000MHz
• TSSOP-20
NCP1574
•Sync buck
•2.7-30Vin
•600kHz
•SOIC-8
NCP1034
•100V sync buck
•Up to 400kHz
•2A drivers
•SOIC-16
NCP3020
•4.5-28V input
•1.5A drivers
•300/600 kHz
•SOIC-8