HIGH EFFICIENCY ZERO VOLTAGE SWITCHING TOTEM-POLE BRIDGELESS RECTIFIER WITH INTEGRATED INRUSH CURRENT LIMITER CIRCUIT

Abstract

A totem-pole bridgeless power factor correction rectifier with the soft switching capability is proposed in this project. The proposed converter utilizes an inrush current limiter (ICL) circuit, which is applied to satisfy the inrush current limit requirement to achieve the soft switching of main switches for high efficiency, so that high efficiency can be achieved by accomplishing ZVS operation. It can also relieve the reverse recovery problem of main switches, and minimize the soft switching circuit by integrating the ICL circuit. Besides, the validity of the proposed converter is performed by the experimental results of a prototype converter with 100-240 VAC universal-line input and 800 W (400 V/2 A) output.

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