PULSE WIDTH MODULATION RESONANT CONVERTER, AND VEHICLE CHARGER UTILIZING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a pulse width modulation resonant converter which reduces withstand voltage of a secondary-side diode and performs zero voltage switching regardless of loads, and to provide a vehicle charger utilizing the pulse width modulation resonant converter.SOLUTION: A pulse width modulation resonant converter includes: a transformer; a switching unit which includes first to fourth switches electrically connected to a primary-side coil of the transformer and converts DC voltage into AC voltage by switching operation of the first to fourth switches, where each of switches is switched from off to on when a voltage difference across the switch is zero; and a rectifying part including first to fourth diodes electrically connected to the secondary-side coil of the transformer, an output capacitor, and a resonant tank having a resonant capacitor and a resonant inductor electrically connected to the secondary-side coil of the transformer.SELECTED DRAWING: Figure 2