LCDTV AC/DC Power range

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LCDTV AC/DC Power range
20 LCD TV
32 LCD TV
37 LCD TV
40 LCD TV
14 LCD TV
26 LCD TV
Input Power
44 W 70W 140W 180W 195W
285W
300W input LCD-TV SMPS Specifications
Wide Input voltage range 90-265VAC Wide Input voltage range 90-265VAC Wide Input voltage range 90-265VAC
Multi Output Voltages (Vout) Multi Output Voltages (Vout) Multi Output Voltages (Vout)
Vout Current Remarks
24V 12V 5V 5VSTB 8A 3A 2A 1A ML4800/FAN4800(PFCPWM) FAN7382(AHB driver) FSCQ0765 with Sync rectification FAN5234 FSDM311
Total output Power 243W Total output Power 243W Total output Power 243W
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AHB TOPOLOGY

• Asymmetric control half bridge converter

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24V/8A circuit
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12V/3A,5V/2A and 5V/1A STB circuit
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Full load measurement
VACV 90 110 110 160 220 265
PinW 285 280 280 275 273 271
Vout 23.85V/8A,12.5V/3A,4.96V/2A,4.95V/1A 23.85V/8A,12.5V/3A,4.96V/2A,4.95V/1A 23.85V/8A,12.5V/3A,4.96V/2A,4.95V/1A 23.85V/8A,12.5V/3A,4.96V/2A,4.95V/1A 23.85V/8A,12.5V/3A,4.96V/2A,4.95V/1A 23.85V/8A,12.5V/3A,4.96V/2A,4.95V/1A
PoutW 243.18 243.18 243.18 243.18 243.18 243.18
Power Factor 0.99 0.99 0.99 0.98 0.96 0.95
Efficiency 85.4 85.4 86.9 88.5 89.1 89.8
Load condition24V/8A,12V/3A,5V/2A,5VSTB/1A. Load condition24V/8A,12V/3A,5V/2A,5VSTB/1A. Load condition24V/8A,12V/3A,5V/2A,5VSTB/1A. Load condition24V/8A,12V/3A,5V/2A,5VSTB/1A. Load condition24V/8A,12V/3A,5V/2A,5VSTB/1A. Load condition24V/8A,12V/3A,5V/2A,5VSTB/1A. Load condition24V/8A,12V/3A,5V/2A,5VSTB/1A.
Board size170mmx215mm, Height35mm
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Attachment 1.ML4800/FAN4800 2.FAN7382
3.FAN5234 4.FSDM311 5.FSCQ0765
Rev 1.1
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ML4800 Average Current Sense
Vin
Isense
IGainmod
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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

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ML4800/FAN4800 A High Performance PFCAverage
Current,CCM
ML4800/ML4824
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ML4800/FAN4800 A More Detail Circuit
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An Example ML4800
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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.

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ML4800/FAN4800 Gain Modulator---(II)
Vin
Isense
IGainmod
Vin?2Vin, then Isense?2Isense,gtPin?4Pin gt Vout
??. So it is necessary for a RMS AC line voltage
feed forward to make Isense ?0.5Isense while
Vin?2Vin.
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ML4800/FAN4800 Gain Modulator---(III)

• IGAINMOD GAIN IAC
• K (VEAO-
  0.625 ) IAC , K is in units of V-1
• 
  

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

Average line voltage compensation with brownout
control
the K of the curve is in units of m V-1
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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
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ML4800/FAN4800 Slew Enhanced Error Amp
Improves Transient Response
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

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

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

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ML4800/FAN4800 Switching Frequency Setting(Pin7)

• ML4824-1fpwmfpfc
• ML4824-2 fpwm2fpfc
• ML4800fpwmfpfc
• fpfc 1/ (0.51 RT CT )

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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.

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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.

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ML4800/FAN4800 RAMP 2 (Pin 8) --- (II)Current
Mode
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ML4800/FAN4800 RAMP 2 (Pin 8) --- (III)Voltage
Mode (1)--- No Feed-forward
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ML4800/FAN4800 RAMP 2 (Pin 8) ---
(IV)Voltage Mode (2)--- with Feed-forward Ramp
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ML4800/FAN4800 DC ILIMIT (Pin 9)

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

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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.

PWM switch
PFC switch
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FAN4800
Project (Part ) Family Description Application Package Current Current Current Current
Project (Part ) Family Description Application Package Code D ER sample Code R Code S
FAN4800 PFC IC Same die with CM6800 PC, Server 16DIP 16SOP - 2005-04-27 2005-05-18 2005-06-15
Block Diagram Block Diagram Block Diagram Block Diagram Description Description Description Description Description

Features Features Features Features Features

The FAN4800 is a controllers for power factor
corrected, switched mode power supplies.
Power Factor 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

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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 -1.0V10 -1.0V10 -1.0V15
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. -40125?C ML4800CX 070?C ML4800IX -4085?C ML4824CX 070?C ML4824IX -4085?C
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FSC HVIC Application Circuit - General Purpose
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FSC HVIC Solution

• 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,600
  V)
• 3-phase ?
  
• FAN7390(250/500mA,600V)
• Self oscillation ?

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Power Solutions Switching Regulators for Point
of Load Applications
Vin
New Product
24V
FAN 5240 2f
FAN5234/6 1f
FAN2105
12V
FAN5182 (Controller 1-3f) FAN5009 (Driver)
Legend
5V
FAN5307
FAN2001
FAN2003
FAN20112012
FAN6520A
Integrated Switcher (ControllerDriverMOSFET)
Integrated Controller (ControllerDriver)
New Products
3.3V
Stand-alone Controller (Controller External
Driver)
Iout
0.3A
1A
3A
5A
20A
40A
60A
100A
120A
140A
-- Sampling Now
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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

8DIP
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Block Diagram of FSDM311
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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 (lt1W)
• - 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
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FSCQ-series Functional Block Diagram
QRC Control
Burst Mode Operation
SenseFET
OLP
Current Mode Control
AOCP
TSD
OVP
Auto Restart Mode
Latch Mode
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FSCQ-series pin description
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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

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FSCQExtended Quasi-Resonant Switching at light
load

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

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FSCQ Advanced Soft-Start
85V input
265V input

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

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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

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FSCQ Advanced Burst Operation
Vi85Vac
Vi265Vac
1. Vds 2. Vcc 3. Vfb 4. Id
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FSCQ/KA5Q Lists
Device Function Function Function Function Function Protection Option Protection Option Protection Option Protection Option PKG
Device Vdmax (V) Ipeak (A) Pin(max)(1) 85-265VAC Fopr (KHz) Rds(on) Max (?) OLP OCL OVP TSD PKG
High Power Quasi-Resonant Converter Applications High Power Quasi-Resonant Converter Applications High Power Quasi-Resonant Converter Applications High Power Quasi-Resonant Converter Applications High Power Quasi-Resonant Converter Applications High Power Quasi-Resonant Converter Applications High Power Quasi-Resonant Converter Applications High Power Quasi-Resonant Converter Applications High Power Quasi-Resonant Converter Applications High Power Quasi-Resonant Converter Applications 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, Dmax0.5,
Vin(dc)100V