開關(guān)電源功率因數(shù)校正電路設(shè)計(jì)與應(yīng)用實(shí)例之：概述（二）

(4)功率因數(shù)校正電路的結(jié)構(gòu)形式

功率因數(shù)校正電路(PFC)分為有源和無源兩種。無源校正電路通常由大容量的電感、電容和工作于工頻電源的整流器組成。有源校正電路往往工作于高頻開關(guān)狀態(tài)，它們的體積小、重量輕，比無源校正電路效率高。圖1-1是功率因數(shù)校正電路的三種不同結(jié)構(gòu)形式。不同的結(jié)構(gòu)形式各有其特點(diǎn)，見表1-4

開關(guān)電源功率因數(shù)校正電路設(shè)計(jì)與應(yīng)用實(shí)例之：概述（二）" width="670" height="137" 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