基于電荷控制方式的CCM反激PFC電路的設計

摘要：　　介紹了電荷控制方式的CCM反激PFC電路的工作原理，研究了它的一些基本特性，并給出了電路設計步驟，研制了一臺200W樣機.實驗結果表明該電路方案簡單,成本低,輸入功率因數高,適用于中小功率應用.具有良好的應用前景. 敘詞：電荷控制；反激變換器；PFC Abstract：　　In this paper,Charge control is applied to a flyback converter for the purpose of power factor correction(PFC). The properties of charge control related to flyback PFC application are studied. The design guidelines are presented and a 200W prototype circuit was built. The experiment results show its simplicity and low cost as well as good prospects of application. Keyword：Charge control；Flyback；PFC