ZERO VOLTAGE SWITCHING FULL-BRIDGE DC-DC CONVERTER

摘要

A DC-DC converter is disclosed. The DC-DC converter comprises; a full-bridge DC-AC converter which receives DC power and outputs the DC power as AC power by using four switches; a resonance unit including an inductor and a capacitor; a transformer unit which induces voltage which is applied to a first wire according to a switching operation of the four switches into a second wire; and a rectification unit which rectifies the voltage outputted from the transformer unit and outputs it as DC voltage. The present invention enables to perform the zero voltage switching in a wide load range and improves efficiency by reducing switching loss. Therefore, the miniaturization of a power conversion device can be realized by performing the high frequency switching which is limited by the switching loss.