Low-noise characteristics of a ZVS-PWM controlled series resonant converter with active clamp and synchronous rectification

Abstract

This paper presents the measured results of the output noise voltage and the spectrum of reflected conduction noise of a ZVS PWM series resonant power converter, and compares these noise characteristics with those of the conventional ZVS PWM forward power converter. As a consequence, it is clarified that the ZVS-PWM series resonant power converter achieves extremely low noise characteristics.