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1. 低功率方案(<20W ) Fairchild P/N: FSEZ1016/FSEZ2016/FAN100/SGP400 Operation Method: PSR Feature: a> CC/CV control without secondary-feedback circuit (opto， 431...) b> Integrated 600V high performance MOSFET c> Minimize standby power consumer by decreasing PWM frequency linearly d> Decrease EMI by frequency hopping e> Low start-up current， low operation current f> OVP/OTP/UVLO function Demo Reference:|中华励志网|zhlzw.com为您提供学习资料| 2. 中功率方案 (30—100W) Fairchild P/N: FAN7527B/FSQ0365/FSQ0965… Operation Method: Hard Switch/QRC Feature: a> Realize CC/CV control by current detect b> High PF value only using PFC controller without input capacitance c> High efficiency using QRC IC to reduce MOSFET consuming d> Low operation current e> OCP/OVP/UVLP/Short protection Demo Reference: