●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.
●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=4•fPFC=4•fPWM for FAN4800AS/01S
●■ fRTCT=4•fPFC=2•fPWM 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
