FAN4800ASMY Datasheet PDF - Fairchild

●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