Implementation of a ZVS Half-Bridge Converter with Current Doubler Rectifier

This paper presents the system analysis and circuit implementation of a zero voltage switching (ZVS) half-bridge converter with current doubler rectifier. The asymmetrical pulse-width modulation technique is used in the adopted power converter to regulate the DC output voltage and improve the duty cycle utilization. The transformer leakage inductance and the output capacitance of power switches are used to achieve ZVS operation during the transition interval between two switches. The operation principle of the converter is analyzed and explained. The design consideration of the ZVS half- bridge converter with current doubler rectifier is provided. Finally experimental results are provided to verify the theoretical analysis and circuit performance.