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本文分析了零电压转换（ＺｅｒｏＶｏｌｔａｇｅＴｒａｎｓｉｔｉｏｎ）功率因数校正（ＰＦＣ）的工作原理及设计步骤，还介绍了专用控制器ＵＣ３８５５。给出了主要的工作波形，和外围元件的选择方法，还对传统的ＰＦＣ及ＺＶＴＰＦＣ的工作性能作了比较
This paper analyzes the zero-voltage conversion (ZeroVoltageTransition) power factor correction (PFC) working principle and design steps, but also introduces the special controller UC3855. Given the main working waveform, and the selection of external components, but also the traditional PFC and ZVTPFC working performance were compared