飞兆功率开关（ FPS ） Fairchild Power SwitchFPS
Description
The Power SwitchFPS product family is specially designed for an off-line SMPS with minimal external components. The Fairchild Power SwitchFPS consist of high voltage power SenseFET and current mode PWM IC. Included PWM controller features integrated fixed oscillator, under voltage lock out, leading edge blanking, optimized gate turn-on/ turn-off driver, thermal shut down protection, over voltage protection, and temperature compensated precision current
sources for loop compensation and fault protection circuitry compared to discrete MOSFET and controller or RCC switching converter solution. The Fairchild Power SwitchFPS can reduce total component count, design size, weight and at the same time increase efficiency, productivity, and system reliability. It has a basic platform well suited for cost-effective design in either a flyback converter or a forward converter.
Features
• Precision Fixed Operating Frequency 100/67/50kHz
• Low Start-up Current Typ. 100uA
• Pulse by Pulse Current Limiting
• Over Load Protection
• Over Voltage Protection Min. 25V
• Internal Thermal Shutdown Function
• Under Voltage Lockout
• Internal High Voltage Sense FET
• Auto-Restart Mode