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FAN4800ASNY

更新时间： 2024-11-25 10:27:31
品牌 Logo 应用领域
飞兆/仙童 - FAIRCHILD 稳压器开关式稳压器或控制器电源电路开关式控制器功率因数校正
页数 文件大小 规格书
19页 577K
描述
PFC/PWM Controller Combination

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FAN4800ASNY 技术参数

是否无铅：不含铅是否Rohs认证：符合
生命周期：Transferred零件包装代码：DIP
包装说明：DIP, DIP16,.3针数：16
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.31.00.01风险等级：7.9
Is Samacsys：N其他特性：ALSO OPERATES IN AVERAGE CURRENT MODE
模拟集成电路 - 其他类型：POWER FACTOR CONTROLLER WITH POST REGULATOR控制模式：VOLTAGE-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：28 V
最小输入电压：9.3 V标称输入电压：15 V
JESD-30 代码：R-XDIP-T16JESD-609代码：e3
长度：19.17 mm功能数量：1
端子数量：16最高工作温度：105 °C
最低工作温度：-40 °C最大输出电流：0.5 A
封装主体材料：UNSPECIFIED封装代码：DIP
封装等效代码：DIP16,.3封装形状：RECTANGULAR
封装形式：IN-LINE峰值回流温度（摄氏度）：NOT SPECIFIED
认证状态：Not Qualified座面最大高度：5.33 mm
子类别：Switching Regulator or Controllers表面贴装：NO
切换器配置：SINGLE最大切换频率：268 kHz
技术：BIPOLAR温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)端子形式：THROUGH-HOLE
端子节距：2.54 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：7.62 mm
Base Number Matches：1

FAN4800ASNY 数据手册

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December 2010  
FAN4800AS/CS/01S/2S  
PFC/PWM Controller Combination  
Features  
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  
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Pin-to-Pin Compatible with ML4800 and FAN4800  
and CM6800 and CM6800A  
PWM Configurable for Current Mode or  
Feedforward Voltage-Mode Operation  
components to achieve versatile protections  
/
compensation. They are available in 16-pin DIP and  
SOP packages.  
Internally Synchronized Leading-Edge PFC and  
Trailing-Edge PWM in One IC  
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.  
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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  
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:  
Interleaved PFC/PWM Switching  
Improved Efficiency at Light Load  
1. Change RAC resister from the old value to a higher  
fRTCT=4•fPFC=4•fPWM for FAN4800AS/01S  
fRTCT=4•fPFC=2•fPWM for FAN4800CS/02S  
resister: between 6MΩ to 8MΩ.  
2. Change RT/CT pin from the existing values to  
RT=6.8kΩ and CT=1000pF to have fPFC=64kHz and  
f
PWM=64kHz.  
Applications  
3. The VRMS pin needs to be 1.224V at VIN=85 VAC  
for universal input application from line input from  
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Desktop PC Power Supply  
85VAC to 270VAC  
.
Internet Server Power Supply  
LCD TV, Monitor Power Supply  
UPS  
4. At full load, the average VVEA needs to be ~4.5V  
and the ripple of VVEA needs to be less than  
400mV.  
Battery Charger  
5. For the Soft-Start pin, the soft-start current has  
been reduced to half the FAN4800 capacitor.  
DC Motor Power Supply  
Monitor Power Supply  
Telecom System Power Supply  
Distributed Power  
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.  
Related Resources  
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AN-8027 - FAN480X PFC+PWM Combination  
Controller Application  
© 2010 Fairchild Semiconductor Corporation  
FAN4800AS/CS/01S/02S • Rev. 1.0.1  
www.fairchildsemi.com  
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