Dual half bridge DC-DC converter with reduced circulating current — Investigation of diode vs. synchronous rectification

Abstract

Each electronic device, from any consumer or industrial sector needs power supply. This power supply must satisfy nowadays certifications and efficiency standards. One of the progressive topology shall be dual half-bridge topology. This topology is formed by two branches - lagging and leading. In this paper, the efficiency of dual half bridge converter is analyzed. For this purpose experimental prototype with diode rectifier as well as synchronous rectifier is evaluated. The concept of proposed converter is targeting efficiency higher than 96%.