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參數資料
| 型號： | FAN4802SMY |
| 廠商： | Fairchild Semiconductor |
| 文件頁數： | 1/24頁 |
| 文件大?。?/td> | 931K |
| 描述： | IC CTLR PFC/PWM COMBO 16-SOIC |
| 標準包裝： | 2,500 |
| 模式： | 平均電流 |
| 頻率 - 開關： | 240kHz ~ 268kHz |
| 電流 - 啟動： | 30µA |
| 電源電壓： | 11 V ~ 26 V |
| 工作溫度： | -40°C ~ 105°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SOIC（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 16-SOP |
| 包裝： | 帶卷 (TR) |
January 2011
?2008 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN4800A/C, FAN4801/02/02L " Rev. 1.0.3 1
FAN4800A/C, FAN4801/02/02L
PFC/PWM Controller Combination
Features
? Pin-to-Pin Compatible with ML4800 and FAN4800
and CM6800 and CM6800A
? PWM Configurable for Current-Mode or
Feed-forward 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
? Peak Current Limiting for PFC
? Cycle-by-Cycle Current Limiting for PWM
? Power-On Sequence Control and Soft-Start
? Brownout Protection
? Interleaved PFC/PWM Switching
? FAN4801/02/02L Improve Efficiency at Light Load
? f
RTCT
=4"f
PFC
=4"f
PWM
for FAN4800A and FAN4801
? f
RTCT
=4"f
PFC
=2"f
PWM
for FAN4800C and
FAN4802/02L
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
Description
The highly integrated FAN4800A/C and FAN4801/02/2L
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, FAN4800A/C and FAN4801/02/02L have
lower operation current that save power consumption in
external devices. FAN4800A/C and FAN4801/1S/2/2L
have accurate 49.9% maximum duty of PWM that
makes the hold-up time longer. Brownout protection and
PFC soft-start functions are not in ML4800 and
FAN4800.
To evaluate FAN4800A/C, FAN4801/02/2L for replacing
existing FAN4800 and ML4800 boards, five things must
be completed before the fine-tuning procedure:
1. Change R
AC
resister from the old value to a higher
resister: between 6MW to 8MW.
2. Change RT/CT pin from the existing values to
R
T
=6.8KW and C
T
=1000pF to have f
PFC
=64KHz,
f
PWM
=64KHz.
3. VRMS pin needs to be 1.224V at V
IN
=85 V
AC
for
universal input application from line input from
85V
AC
to 270 V
AC
. Both poles for the V
rms
of
FAN4801/02/02L dont need to substantially slower
than FAN4800; about 5 to 10 times.
4. At full load, the average V
EA
needs to ~4.5V and the
ripple on the V
EA
needs to be less than 400mV.
5. Soft-Start pin, the soft-start current has been
reduced to half from the FAN4800 capacitor.
Related Resources
?
AN-8027 - FAN480X PFC+PWM Combination
Controller Application
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 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 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格: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:功率因數校正 IC PFC/PWM Controller Combo RoHS:否 制造商:Fairchild Semiconductor 開關頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風格: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:功率因數校正 IC PFC/PWM Controller Combo RoHS:否 制造商:Fairchild Semiconductor 開關頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
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