單端反激式開關電源研究與設計

摘要：反激變換器是小功率家電和手持設備中最常用的電源系統，反激變換器特殊的工作過程決定了其設計方法異于正激變換器。本文對反激變換電路進行研究，介紹了從變壓器電感特性出發進行設計的方法，這種方法與等效Boost設計方法和電能守恒法相比，更明確的體現了反激變換器的電路原理。 敘詞：反激變換 設計方法 電感特性 Abstract： Flyback converter is the most used power system in household appliances and hand-in electrical equipments. The different design method was decided by its special circuit characters with forword topology.With this regards, the dissertation studied the mode of Flyback circuit, introduced the design method based on the transformers inductor character, this method with compared to the Boost equivalent design method and energy conservation law which definitely reflect the nature of　Flyback　topology. Keyword：Flyback convertor Design method Inductor character