An Isolated ZVS DC/DC Converter with Diode-connected MOSFET in Rectifier

Abstract

This paper presents an isolated resonant zero voltage switching ZVS converter with a diode-connected MOSFET in a rectifier. The active resonant network is the composition of a resonant capacitor, a transformer leakage inductance and a diode-connected MOSFET. The output capacitor of the main switches together with their reverse recovery diodes provide zero-voltage switching condition for all switches. The input voltage/current of the proposed circuit is 0.35V/500uA while the output voltage/current is 1.5V/75uA. The simulated circuit in PSIM is presented to verify the proposed converter performance.