1

LCDTV AC/DC Power range

Input Power

14” LCD TV

44 W 70W 140W 180W 195W 285W

20” LCDTV

26” LCD TV

32” LCD TV

37” LCD TV

40” LCDTV

Wide Input voltage range: 90-265VAC

Multi Output Voltages (Vout):

Vout Current Remarks

24V

12V

5V

5VSTB

8A

3A

2A

1A

ML4800/FAN4800(PFC+PWM) + FAN7382(AHB driver)

FSCQ0765 with Sync rectification

FAN5234

FSDM311

Total output Power : 243W

300W input LCD-TV SMPS Specifications

2

AHB TOPOLOGY• Asymmetric control half bridge converter

inO VDDn

V )1(2

3

24V/8A circuit

Q18

C1815

L5

Q13 C1815

R5082K

R95

1K

R9251K

C25A

C49

F2

250V 2A

R98 3K

LS1

RELAY SPDT

35

412

R35

330k

R80

240K

D13

300W ISL9R1560G2/RHRP1560

300W 0.33/200W 0.47

R83390

R41 10

R66 180k

F2

250V 1A

L8

Q14

A1015

3

2

1

C48

1u 50V

R81

300W 24V/8A

200W FQP13N50C*2/FCP9N60*2

GL

R76 100

R67 10

IC6

H11A817A 12

43

R1054K7

C23

250Vac/22n

12

C6010U 50V

D26

1N4002

R86

1K

R8527K

200W RHRP860

R47

- +

BD1

D5SB60

2

1

3

4

2

1

3

4

C67

470nF

R64

91k

R48

R32

2.5OHM/5A

GND

380V

Q6

2

1

3

R65

C56A0.1u

C37 470p

R49 6.2k

R73

12k

5V/STB

Vref_7.5V

Vref_7.5V

GL

C64470pF

C5210V/220U

D41

1N4148

R30

2M

C22

0.1u

C21

470n

R54330k

C5722UF 35V R79

240K

17V VCC OUT

C26470n

ZD1418V

C73

U6KA4312

3

1

R70

C54100n

ZD4 18V

R34

51 3W

R38

330k

R4510k

Q11

C1815

C62

100n

J1

CON1

1

IC5

817A

12

43

ZD10R8482

R58 180k

L7

R6082K

T2

1

9

11

6

13

3

4

R9010K

C45220P

380V

Vcc

Vfb

GND

Drain

STR

U4

FSDM311

3

6,7,8

2

5

1C58

68n

U5KA4312

3

1

D31

1N4937

D331N4937

C33450V/220U

C7022UF 50V

Q2

2

1

3

Q7

A1015

3

2

1C40450V/22U

R442.2k

12

3

IC4FAN7382

8

7

6

5

1

2

3

4

200W 24V/6A

ZD10B15V

D22 1N4937

D32 1N4148Q9 C1815

C61100n

D17 1N4148

C39 2n2

D191N4148

R891K

C561u

R110

R422.2k

C68

0.1uF

Q10A1015

ZD1218V

ML4800/FAN4800

0

R56

180k

C34

220P

D291N4148

R100jumper

GPFCD371N4937

ZD7 18V

Q51

23

R59330k

R104

R881K

C30470UF 35V

R63

180k

12

3

R91 10K

N

D361N5819

L11 Bead

C66

1n

Q4C1815

J2

CON1

1

C23A

250Vac/0.47u

12

D27

1N4002

R68

ZD618V

T3

C41 2n2

C59

1U 50V

R107

DRIVER:FAN7382

Q3

300W FQPF18N50V2*2/FCP11N60*2

1

23

OLP

HS1

GH

R40

270k

R108

R69

D41A

1N4148

ON/OFF

L9

D25 1N4937

D20 1N4148

R55 10k

ZD10A

C32

0.1U 100V

R72100

R57

33

GPFC

R36 10

D39

1N4937

F1

250V 6A

20V VCC IN

C50

20V VCC

C5110V/220U

D121

23

C36

4700P/400V

C43 47nC420.22u

D381N4148

R87

6.2K

R43

R94

470

R39 10

ZD518V

C44

220n

D11

1N4937

L

C25

Vrms

GND

SS

DC Ilimit

Vdc

Iac

RAMP2

RAMP1

Vcc

PFC OUT

PWM OUT

Isense

Vfb

VERO

Vref

IEAO

IC2

9

10

11

12

13

14

15

161

2

3

4

5

6

7

8

5V/3A STBD34 MBR1645

R3710k

Q15

C1815

0

Q12

C1815

R99 1K

C68B

10u

R741K

C29470UF 35V

R6222K/3W

GH

C68A

0.1uF

D18

1N4148C37A0.1u

R82

C5510U

R93

10K

R71

R965.6K

C631nF

C31

0.1U 100V

IC7

H11A817C

12

43

D24

12

3

R61270k

C28103/1000V

12

D30 1N4937

C6033U 50V

R33 10

R75

4

12V/3A,5V/2A and 5V/1A STB circuit

0

R8

U3KA4312

3

1

R14820

ZD3

5V1

D41N4148

R25

10K

Vcc

Vfb

GND

Drain

SYNC

U1

FSCQ0765

10

2

4

1

3

100T

C20

100UF 35V

5V/3A

0

ZD2

2.2V

3

R11

820

5,6

380V

4

C22200UF 16V

7,8

R12680

C11100u

0

0

0

R9

12V/4A

VCC

C19

1uF

ZD2

2.2V

C150.1uF

R282K7

R132K2

0

L1

1T

R21

1K2

C13

0.1uF

C92200UF 35V

R16 1K

L3

BEAD

1

R182K2

Vcc

PGND

HDRV

BOOT

AGND

PGOOD

VOUT

Vin

ENABLE

ILIM

ISEN

VSEN

SW

LDRVSS

FPWM

U2

FAN5234

7

2

4

1

3

16

15

5

14

13

8

6 11

10

12

9

R26

56K

100

R19

10K

C71n

0

R1720K

0

C6560pF

0

R23

20K

R5 1K

0

R730

C120.1uF

C522UF 35V

D51N4937

Q1C1815

2 C18100nF

L4

10uH

C1010n

M1

FDP3672

0

D31N4937

C3220p/1KV

C16220UF 6.3V

R29

2K

R156K/3W

C11000P

C14 0.15uF

D11N4937

R2712K

0

ZD118V

IC1

817A

12

43

R24

5.1K

D9MBR0520L

C17

0.1uF

T1

FDS6982AS/FDS6912A/FDS6986

R20

NC

R15NC

R2210K

OLP

C22200UF 16V

R10

5

Full load measurement

VAC[V] 90 110 160 220 265

Pin[W] 285 280 275 273 271

Vout 23.85V/8A,12.5V/3A,4.96V/2A,4.95V/1A

Pout[W] 243.18

Power Factor

0.99 0.99 0.98 0.96 0.95

Efficiency

[%]

85.4 86.9 88.5 89.1 89.8

Load condition:24V/8A,12V/3A,5V/2A,5VSTB/1A.

Board size:170mmx215mm, Height:35mm

Attachment:1.ML4800/FAN48002.FAN7382 3.FAN5234 4.FSDM3115.FSCQ0765

Rev 1.1

7

ML4800: Average Current Sense

ACIn

V O U TL1 D 2

R SEN SE

–

+

Error Am p

P W M

C LO C K

Vin

Isense

IGainmod

8

ML4800/FAN4800 Continuous Mode

• Peak to RMS ratio lower: Lower I2R losses

• Ripple current: Lower core losses

• Lower EMI: Smaller input filter

• Requires very fast boost diode

0

0.5

1

1.5

2

2.5

3

Ind

uct

or

(Lin

e) C

urr

ent

(A)

0

0.5

1

1.5

2

2.5

Ind

uct

or

Cu

rren

t IL

Near Vin Peak @ 120V RMS

9

ML4800/FAN4800 A High Performance PFCAverage Current,CCM

ML4800/ML4824

10

ML4800/FAN4800 A More Detail Circuit…

11

An Example: ML4800

12

ML4800/FAN4800 Gain Modulator---(I)

• Gain Modulator:

Generate the reference current wave-form.

IAC Input: rectified AC input sine wave

Decides the “Shape” of the current Reference

VEAO Input: Vo

Decides the “Size” of the current Reference

to regulate the Vo.

VRMS Input: RMS AC line voltage

Feed-forward the 1 / Vin(rms)2 to speed up the

response & maintain a constant loop gain.

13

ML4800/FAN4800 Gain Modulator---(II)

ACIn

V O U TL1 D 2

R SEN SE

–

+

Error Am p

P W M

C LO C K

Vin

Isense

IGainmod

Vin↑2Vin, then Isense↑2Isense,=>Pin↑4Pin => Vout ↑↑. So it is necessary for a RMS AC line voltage feed forward to make Isense ↓0.5Isense while Vin↑2Vin.

14

ML4800/FAN4800 Gain Modulator---(III)

K is a function of VRMS-2 . Left is the K/ VRMS curve

* the K of the curve is in units of m V-1

•IGAINMOD = GAIN * IAC

= K * (VEAO- 0.625 ) * IAC , K is in units of V-1

Average line voltage compensation with brownout control

15

ML4800/FAN4800 Gain Modulator---(IV)• Continuous mode PFC controllers

modify the gain error in the control loop

• For voltages in the range 85V to 220V, the gain curve compensates for the Vrms dependency

• Without this compensation, the gain of the control loop would be directly proportional to Vrms2

• For voltages below 85V, the gain curve provides brownout protection

Modulator compensates for effect of loop gain increase with VIN(RMS)

2 with piecewise linear curve

16

ML4800/FAN4800:“Slew Enhanced” Error Amp Improves

Transient Response

V O U T

Vre

f

T oM ultip lier

VFB

•Special shaped, non-linear gain error amplifiers are used.

Such that under steady-state operating conditions the transconductance of the error amplifier is at a local minimum.

Lower gain to get higher PF when in Steady State.

Higher gain to get fast transient response

17

ML4800/FAN4800 VFB (Pin 15) Tri-Fault Detect

• Should VFB go too low (* Pin 15 < 0.5 V ), too high (* Pin 15 > 2.75 V), or open, the internal Tri-Fault Detect circuit will senses the error and terminates the PFC output driver.

18

ML4800/FAN4800 Switching Frequency Setting(Pin7)

ML4824-1:fpwm=fpfc

ML4824-2: fpwm=2fpfc

ML4800:fpwm=fpfc

fpfc ≈ 1/ (0.51* RT CT )

IAC

Isens

Vrms

SS

VDC

RAMP1

RAMP2

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

IEAO VDC

VFB

VREF

Vcc

PFC OUT

PWM OUT

GND

DCI LMIT

IAC

Isense

VRMS

SS

VDC

RAMP1

RAMP2

R38 (*=RT)

C18 (*=CT)

19

ML4800/FAN4800 Vin OK Comparator

• The Vin OK Comparator monitors the DC output of the PFC and inhibit the PWM if the voltage on the VFB is less than 2.45 V. Once this voltage reaches over 2.45 V, the soft-start of the PWM section begins.

20

ML4800/FAN4800 PWM Soft Start (Pin 5) --- (I)

• Chose

Css = tDELAY * (25 uA/1.25V)

Where Css is the soft start Cap.

tDELAY is the desired Start-

up delay.

During the tDELAY only the PFC works. PWM does not work. After then, the duty of the PWM O/P begins to (gradually) expand to its normal condition.

IAC

Isens

Vrms

SS

VDC

RAMP1

RAMP2

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

IEAO VDC

VFB

VREF

Vcc

PFC OUT

PWM OUT

GND

DCI LMIT

IAC

Isense

VRMS

SS

VDC

RAMP1

RAMP2C19 (*Css)

21

ML4800/FAN4800 RAMP 2 (Pin 8) --- (II)Current Mode

IAC

Isens

Vrms

SS

VDC

RAMP1

RAMP2

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

IEAO VDC

VFB

VREF

Vcc

PFC OUT

PWM OUT

GND

DCI LMIT

IAC

Isense

VRMS

SS

VDC

RAMP1

RAMP2

R16

C11C28

R23

R21//R22 R40

R30C22

R29

C23

R31

R44

R32

R33

22

ML4800/FAN4800 RAMP 2 (Pin 8) --- (III)Voltage Mode (1)--- No Feed-forward

IAC

Isens

Vrms

SS

VDC

RAMP1

RAMP2

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

IEAO VDC

VFB

VREF

Vcc

PFC OUT

PWM OUT

GND

DCI LMIT

IAC

Isense

VRMS

SS

VDC

RAMP1

RAMP2

R16

C11 C28

R23

R21//R22 R40

R30C22

R29

C23

R31

R44

R32

R33

Rt1

Ct1

23

ML4800/FAN4800 RAMP 2 (Pin 8) --- (IV)

Voltage Mode (2)--- with Feed-forward Ramp

IAC

Isens

Vrms

SS

VDC

RAMP1

RAMP2

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

IEAO VDC

VFB

VREF

Vcc

PFC OUT

PWM OUT

GND

DCILMIT

IAC

Isense

VRMS

SS

VDC

RAMP1

RAMP2

R16

C11 C28

R23

R21//R22 R40

R30C22

R32

R33

Rt1

Ct1

24

ML4800/FAN4800 DC ILIMIT (Pin 9)

IAC

Isens

Vrms

SS

VDC

RAMP1

RAMP2

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

IEAO VDC

VFB

VREF

Vcc

PFC OUT

PWM OUT

GND

DCI LMIT

IAC

Isense

VRMS

SS

VDC

RAMP1

RAMP2

R21//R22

R23 Q3

C28

•the DC ILIMIT input is used for output stage overcurrent protection.

25

ML4800/FAN4800 PFC/PWM Combo Controllers

• Combine: Leading edge PFC and trailing edge PWM in one package

PFC turn off, then PWM turn on, at the same instant to minimize

the momentary “no-load” period, thus lowering ripple voltage generated by the switching action.

PFC switch

PWM switch

26

Project

(Part #)Family Description Application Package

Current

Code D ER sample Code R Code S

FAN4800 PFC IC Same die with CM6800 PC, Server16DIP

16SOP- 2005-04-27 2005-05-18 2005-06-15

Block Diagram Description

Features

The FAN4800 is a controllers for power factor corrected, switched mode power supplies. PowerFactor Correction (PFC) enables the use of smaller, lower cost bulk storage capacitors, reduces power line loading, and reduces stress on the components of a switched mode power supply.

Average Current Mode 23V BiCMOS Process Vcc OVP, Brown out, UVLO, Soft start Low Power Detect Comparator More Precise Spec. for OVP, OCP, Tri-Fault Low Power Consumption : 100uA, 3mA 16-pin Solution

FAN4800

27

FAN4800 vs. ML4800, ML4824 : Spec. Comparison

Parameter FAN4800 ML4800 ML4824

Max. Supply Voltage 20V 18V 13.5V

Zener Voltage Vcc OVP 17V 13.5V

Start-up Current 100uA 200uA 700uA

Operating Current 3mA 5.5mA 16mA

Low Power Detector O X X

Tri-fault Protection O O X

PFC ILimit -1.0V±10% -1.0V±10% -1.0V±15%

OVP 2.77V 2.75V 2.7V

Vin OK 2.45V 2.45V 2.5V

Soft Start Current 20uA 25uA 50uA

Peak Drive Current ±1.0A ±1.0A ±0.5A

Gain Modulation Resistance 3.5k 3.5k 1.6k

Operating Temp. -40~125CML4800CX: 0~70CML4800IX: -40~85C

ML4824CX: 0~70CML4824IX: -40~85C

28

FSC HVIC Application Circuit - General Purpose

29

FSC HVIC Solution

• Fairchild Semiconductor.Fairchild Semiconductor.•

• High Side only • FAN7360(250/500mA,600V)

• Half bridge • FAN7380(60/130mA),7382(250/500mA,600V),

• 7385(2/2A,600V),7386(3/3A,600V),FAN7387(6/6A,600V)

• 3-phase • FAN7390(250/500mA,600V)

• Self oscillation

30

FAN5240

2

FAN5234/61

Power Solutions – Switching Regulators for Point of Load Applications

3.3V

5V

12V

24V

Vin

Iout0.3A 1A 3A 5A 20A 40A 60A 100A 120A 140A

FAN5307

FAN2001*

FAN2003*

FAN2105*

FAN5182 (Controller 1-3) + FAN5009 (Driver)

Integrated Switcher(Controller+Driver+MOSFET)

Integrated Controller(Controller+Driver)

Stand-alone Controller(Controller+ External Driver)

Legend

FAN20112012

FAN6520A

New Product

New Products

* -- Sampling Now

31

FSDM311

Features

BCDMOS controller + Strong Avalanche CFET

Built in Start up Circuit

Internal soft-start circuit

Peak current limit

New 8DIP PKG for wide creepage

Target Application

FSDM311

Max 8watt Charger with universal input range

Max 20watt auxiliary P/S for PC with 220V input

DRAIN

DRAIN

DRAIN

VstrNC

GND

Vcc

Vfb

8DIP

32

2

UVLOVoltage

Ref.

UVLO < 7V

Vstr

Vcc

InternalBias

UVLO > 9V

RsenseOCP

S/S10mS

6, 7, 8

OSC

S

R

Q

S

R

Q

LEB

OLPReset

/ 4

DRIVER5uA 400uA

Vck

Vth

SenseFET

Drain

GND

Vfb 3

1NC

5

PWM

4.5V

OVP

Min. 21V

4

TSDHis 40

Built-in Start up

Peak Current Limit

Soft Start

Voltage Mode Control

Protection

Auto Restart

Block Diagram of FSDM311

1. Introduction to FPS 33

Green FPSGreen FPSTMTM

Features and Advantages of FSCQ-series

• Features– - Optimized for Quasi-resonant converter (Low EMI and High Efficiency)– - Fully avalanche rated and 100% tested SenseFET– - Pulse-by-pulse current limiting– - Improved reliability through various protection functions

• : Over voltage, Over load, Over current, Thermal shutdown– - Advanced Burst operation for low power consumption in standby (<1W)- - Internal Soft start function (20ms)- - Extended Quasi-resonant operation for wide operation range- - Reduced startup and operating currents

• Advantages– - Reduced board space (simple & compact circuit design)– - Decreased assembly time and field failure rate Enhanced productivity

TO-220F-5L

34

FSCQ-series Functional Block Diagram

9V/15V

3 1

2

4

AuxiliaryVref Main bias

S

Q

Q

R

OSC

Vcc

Vref

Idelay

IFB

VSD

TSD

Vovp

Sync

Vocp

S

Q

Q

R

R

2.5R

Vcc good

Vcc Drain

FB

GND

AOCP

Gatedriver

Vcc good

LEB600ns

PWM

Soft start

Internalbias

Normaloperation

VBurst

Vref

Ib

Vref

Ibufb

Burst modeController

Normal operation Burst Switching

5Sync

Threshold

Quasi-resonant(QR) switching

controller

+

-

+

-

S

Q

Q

R

Power Reset

4.6V/2.6V : Normal QR3.0V/1.8V : Extended QR

fs

QRC Control

Burst Mode Operation

TSD

OLP

OVP

AOCP

Latch Mode

Current Mode Control

Auto Restart Mode

SenseFET

35

FSCQ-series pin description

36

FSCQNormal Quasi-Resonant Switching at heavy load

Advantages- Reduced switching noise (Low EMI)- Improved efficiency- Removed RCD snubber

Limitations- Intermittent switching at light load due to relatively large LEB time

37

FSCQExtended Quasi-Resonant Switching at light load

Advantages- Guarantee stable operation over wide load range- Improve efficiency at light load condition

Output power

Switchingfrequency

Normal QR Switching

Extended QR Switching

90kHz

45kHz

38

FSCQ Advanced Soft-Start

• - Internal soft start (20ms)• - For a fast output build up, offset is introduced in the soft start

85V input 265V input

39

FSCQ Advanced Burst Operation

- Drop output voltage to below half (any level) to minimize the loss caused by leakage current in the high voltage output

- Reduce the effective switching frequency to minimize switching loss

- Reduce the FPS operating current in the burst operation

Vo2

Vfb

Iop

Vds

Inop

Vth

Vo2_min

Iop

PictureOn

PictureOff

Iopbu

PictureOn

Burst Mode

40

FSCQ Advanced Burst Operation

Vi=85Vac Vi=265Vac

1. Vds

2. Vcc

3. Vfb

4. Id

41

Device

Function Protection Option

PKGVdmax

(V)

Ipeak

(A)

Pin(max)(1)

85-265VAC

Fopr

(KHz)

Rds(on)

Max ()OLP OCL OVP TSD

High Power Quasi-Resonant Converter Applications

Color TV

KA5Q0565RT 650 3.5 70 QRC 2.2 YES YES YES YES TO-220F-5L

KA5Q0740RT 400 5.0 100 QRC 1.1 YES YES YES YES TO-220F-5L

KA5Q0765RTH 650 5.0 100 QRC 1.6 YES YES YES YES TO-220F-5L

KA5Q12656RTH 650 6.0 150 QRC 0.9 YES YES YES YES TO-220F-5L

KA5Q1265RFH 650 8.0 200 QRC 0.9 YES YES YES YES TO-3PF-5L

KA5Q1565RF 650 11.5 270 QRC 0.65 YES YES YES YES TO-3PF-5L

FSCQ0765RT 650 5.0 100 QRC 1.6 YES YES YES YES TO-220F-5L

FSCQ1265RT 650 7.0 150 QRC 0.9 YES YES YES YES TO-220F-5L

FSCQ1565RT 650 8.0 200 QRC 0.65 YES YES YES YES TO-220F-5L

Protection Option – OLP(Over Load Protection), OCL(Over Current Latch), OVP(Over Voltage Protection), TSD(Thermal Shutdown)

(1) Open Frame

Pin(max) Test Condition : Flyback Converter, Discontinuous Current Mode, Dmax=0.5, Vin(dc)=100V

FSCQ/KA5Q Lists