小功率的AC/DC变换器的控制难题，可以看看。免积分。

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Brian King and Rich Valley Control Challenges for Low Power ACDC Converters Content Outline 1 The Low Power Flyback Converter   Characteristics   Key performance   Typical operating and control modes 2 PSR Regulation Methods   Constant Voltage CV regulating VOUT   Constant Current CC regulating IOUT 3 Low Standby Power   Lowering consumption   Achieving low input power 4 Results and Comparison 10 W at 5 V Texas Instruments 201415 Power Supply Design Semina......