描述 Description

The Fairchild Power Switch(FPS) product family is specially designed for an off-line SMPS with minimal external components. The Fairchild Power Switch(FPS) consists of a high voltage power SenseFET and a current mode PWM IC. Included PWM controller integrates the fixed frequency oscillator, the under voltage lock-out, the leading edge blanking, the optimized gate turn-on/turn-off driver, the thermal shutdown protection, the over voltage protection, and the temperature compensated precision current sources for the loop compensation and the fault protection circuitry. Compared to a discrete MOSFET and a PWM controller or an RCCsolution, a Fairchild Power Switch(FPS) can reduce the total component count, design size and weight and at the same time increase efficiency, productivity, and system reliability. It has a basic platform well suited for the cost effective design in either a flyback converter or a forward converter

特性 Features

? Precision Fixed Operating Frequency (100/67/50kHz)

? Low Start-up Current(Typ. 100uA)

? Pulse by Pulse Current Limiting

? Over Current Protection

? Over Voltage Protection (Min. 25V)

? Internal Thermal Shutdown Function

? Under Voltage Lockout

? Internal High Voltage Sense FET

? Auto-Restart Mode

Applications

? SMPS for VCR, SVR, STB, DVD & DVCD

? SMPS for Printer, Facsimile & Scanner

? Adaptor for Camcorder