摘要:本文分析了功率因數(shù)校正的原理,闡述了最新的TOPSwitch-GX器件在APFC中的應(yīng)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?fù)浣Y(jié)構(gòu)的APFC技術(shù)是提高中小功率電器功率因數(shù)的較好解決方案之一。
敘詞:功率因數(shù);校正;開關(guān)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