Switching power supply PFC control chip circuit and application analysis

Probe domestic switch needle KG-300K needle head diameter is 3.0mm normally open switch needle

MOS power IC full range

Memory chip

Single-phase PFC has entered the practical stage. Among the small and medium-power single-phase active power factor compensation control chips, UC3854 is the most representative. The power factor correction principle and the commonly used factor correction chip UC3854 internal structure circuit are analyzed in detail. A stable 600W single-phase rectified PFC switching power supply is designed, which has high power factor, high efficiency, low harmonic and low noise. advantage. And introduced the analysis of the design circuit and experimental test results.

Basic working principle and typical application circuit of UC3854

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