Analysis and implementation of a ZVS full-bridge converter with current doubler rectifier

This paper presents a zero voltage switching DC/DC converter to obtain a stable output voltage and high circuit efficiency. In the adopted DC/DC converter, a full-bridge inverter with phase-shift PWM technique is used to regulate the output voltage. The leakage inductance of the transformer is used to achieve zero voltage turn on for the main active switches. To increase the converter efficiency at the transformer secondary side, a current doubler rectifier with property of one diode conduction drop, frequency doubling in the output capacitor and low current rating in the transformer secondary winding is used in the adopted circuit. The measured full-load efficiency of a 100 kHz experimental prototype was higher than 92%. The experimental results were presented to verify the performance of the adopted circuit.