PFC 和 PWM 组合控制器，Fairchild Semiconductor功率因数校正 PFC 和脉冲宽度调制器 PWM 控制器。### 功率因数矫正 PFC，Fairchild SemiconductorPFC 控制器解决方案包括连续传导模式 CCM、临界的/临界导电模式 CrCM/BCM、交错式 PFC 控制器、及 PFC 和 PWM 组合控制器。 所有控制器提供软启动、过压保护、开口反馈保护、过电流保护、输入电压缺乏保护、欠压闭锁保护的集成保护功能。
Description
The highly integrated FAN4800AU/CU parts are specially designed for power supplies that consist of boost PFC and PWM. They require very few external components to achieve versatile protections and compensation. They are available in 16-pin DIP and SOP packages.
Features
Pin-to-Pin Compatible with ML4800, FAN4800, 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
Cycle-by-Cycle Current Limiting for PFC/PWM
Power-on Sequence Control and Soft-Start
Line Sagging Protection
fRTCT=4•fPFC=4•fPWM for FAN4800AU
fRTCT=4•fPFC=2•fPWM for FAN4800CU