參數(shù)資料
型號： FAN4802SMY
廠商： FAIRCHILD SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： 0.5 A POWER FACTOR CONTROLLER WITH POST REGULATOR, 268 kHz SWITCHING FREQ-MAX, PDSO16
封裝： 0.150 INCH, GREEN, MS-012AC, SOIC-16
文件頁數(shù)： 1/19頁
文件大小： 577K
代理商： FAN4802SMY
December 2010
2010 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN4800AS/CS/01S/02S Rev. 1.0.1
FA
N
4800A
S/C
S
/01S/02S
—
PFC/PWM
Controller
Combination
FAN4800AS/CS/01S/2S
PFC/PWM Controller Combination
Features
Pin-to-Pin Compatible with ML4800 and FAN4800
and CM6800 and CM6800A
PWM Configurable for Current Mode or
Feedforward Voltage-Mode Operation
Internally Synchronized Leading-Edge PFC and
Trailing-Edge PWM in One IC
Low Operating Current
Innovative Switching-Charge Multiplier Divider
Average-Current Mode for Input-Current Shaping
PFC Over-Voltage and Under-Voltage Protections
PFC Feedback Open-Loop Protection
Cycle-by-Cycle Current Limiting for PFC/PWM
Power-on Sequence Control and Soft-Start
Brownout Protection
Interleaved PFC/PWM Switching
Improved Efficiency at Light Load
fRTCT=4fPFC=4fPWM for FAN4800AS/01S
fRTCT=4fPFC=2fPWM for FAN4800CS/02S
Applications
Desktop PC Power Supply
Internet Server Power Supply
LCD TV, Monitor Power Supply
UPS
Battery Charger
DC Motor Power Supply
Monitor Power Supply
Telecom System Power Supply
Distributed Power
Related Resources
AN-8027 - FAN480X PFC+PWM Combination
Controller Application
Description
The highly integrated FAN4800AS/CS/01S/02S parts
are specially designed for power supplies that consist of
boost PFC and PWM. They require very few external
components
to
achieve
versatile
protections
/
compensation. They are available in 16-pin DIP and
SOP packages.
The PWM can be used in either current or voltage
mode. In voltage mode, feed-forward from the PFC
output bus can reduce the secondary output ripple.
Compared with older productions, ML4800 and
FAN4800,
FAN4800AS/CS/01S/02S
have
lower
operation current that saves power consumption in
external
devices.
FAN4800AS/CS/01S/02S
have
accurate 49.9% maximum duty of PWM that makes the
hold-up time longer. Brownout protection and PFC soft-
start functions available in this series are not available
in ML4800 and FAN4800.
To evaluate FAN4800AS/CS/01S/02S for replacing
existing FAN4800 and ML4800 boards, five things must
be completed before the fine-tuning procedure:
1.
Change RAC resister from the old value to a higher
resister: between 6M
Ω to 8MΩ.
2.
Change RT/CT pin from the existing values to
RT=6.8kΩ and CT=1000pF to have fPFC=64kHz and
fPWM=64kHz.
3.
The VRMS pin needs to be 1.224V at VIN=85 VAC
for universal input application from line input from
85VAC to 270VAC.
4.
At full load, the average VVEA needs to be ~4.5V
and the ripple of VVEA needs to be less than
400mV.
5.
For the Soft-Start pin, the soft-start current has
been reduced to half the FAN4800 capacitor.
There are two differences from FAN4800A/C/01/02 to
FAN4800AS/CS/01S/02S:
1.
Under-voltage
protection
debounce
time
is
extended to one second.
2.
PWM gate clamp voltage is raised to 19V.
相關(guān)PDF資料
PDF描述
FAN4801SMY 0.5 A POWER FACTOR CONTROLLER WITH POST REGULATOR, 268 kHz SWITCHING FREQ-MAX, PDSO16
FAN4801SNY 0.5 A POWER FACTOR CONTROLLER WITH POST REGULATOR, 268 kHz SWITCHING FREQ-MAX, DIP16
FAN4800CSMY 0.5 A POWER FACTOR CONTROLLER WITH POST REGULATOR, 268 kHz SWITCHING FREQ-MAX, PDSO16
FAN4800CSNY 0.5 A POWER FACTOR CONTROLLER WITH POST REGULATOR, 268 kHz SWITCHING FREQ-MAX, DIP16
FAN4802SNY 0.5 A POWER FACTOR CONTROLLER WITH POST REGULATOR, 268 kHz SWITCHING FREQ-MAX, DIP16
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
FAN4802SNY 功能描述:電流型 PWM 控制器 PFC/PWM Controller Combination RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
FAN4803 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:8-Pin PFC and PWM Controller Combo
FAN4803CP1 功能描述:功率因數(shù)校正 IC PFC/PWM Controller Combo RoHS:否 制造商:Fairchild Semiconductor 開關(guān)頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel
FAN4803CP-1 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:8-Pin PFC and PWM Controller Combo
FAN4803CP1_Q 功能描述:功率因數(shù)校正 IC PFC/PWM Controller Combo RoHS:否 制造商:Fairchild Semiconductor 開關(guān)頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel
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