The SPS product family is specially designed for an off-line SMPSwith minimal external components. The SPS consist of high voltagepower SenseFET and current mode PWM IC.Included PWM controller features integrated fixed frequencyoscillator, under voltage lock-out, leading edge blanking, optimizedgate turn-on/turn-off driver, thermal shutdown protection, overvoltage protection, and temperature compensated precision currentsources for loop compensation and fault protection circuitry.Compared to discrete MOSFET and PWM controller or RCCsolution, a SPS can reduce total component count, design size,weight and at the same time increase efficiency, productivity, andsystem reliability.It has a basic platform well suited for cost-effective design in either aflyback converter or a forward converter.