800V Integrated Power Switch for 35Watt offline flyback converters

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Overview

The ON Semiconductor Power Switch (FPS) product family is specially designed for an off-line SMPS with minimal external components. The ON Semiconductor Power Switch (FPS) consist of high voltage power SenseFET and 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 discrete MOSFET and PWM controller or RCC solution, a ON Semiconductor Power Switch (FPS) 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.

  • DVD/Set Top Boxes
  • Precision fixed operating frequency (100/67/50kHz)
  • Low start-up current (typ. 100µA)
  • Pulse by pulse current limiting
  • Over current protection
  • Over voltage protecton (Min. 25V)
  • Internal thermal shutdown function
  • Under voltage lockout
  • Internal high voltage sense FET
  • Auto-restart mode

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