Fully Soft Switched Single Stage Bridgeless Power Factor Correction Converter

This article proposes a high-efficiency single-stage bridge-less PFC converter. The converter main switches operate with fully ZVS switching during both turn-on and turn-off, enabling the converter to function effectively at high frequencies. Due to its operation in DCM, the converter inherently provides power factor correction without the need for an additional control circuit. This paper examines the operation principles of the proposed converter and validates its performance through simulation results.