基于TOPSwitch-GX器件的新型有源功率因數校正技術

摘要：本文分析了功率因數校正的原理，闡述了最新的TOPSwitch-GX器件在APFC中的應用。給出了計算方法、原理圖和一個算例。指出基于TOPSwitch-GX器件Boost拓撲結構的APFC技術是提高中小功率電器功率因數的較好解決方案之一。 敘詞：功率因數;校正；開關電源 Abstract：In this paper the principle of power factor correction is analyzed and the application of the newest TOPSwitch-GX IC to APFC is elucidated. Moreover, the author provides a calculation method, a principle chart and a calculation example. It is pointed out that the APFC technology based on TOPSwitch-GX IC Boost topological structure is a better solution to improving the power factor of small-power electrical equipment. Keyword：power factor; correction; switch power