RESONANCE CIRCUIT FOR USE IN H-BRIDGE DC-DC CONVERTER

摘要

PPROBLEM TO BE SOLVED: To provide a resonance circuit for use in an H-bridge DC-DC converter. PSOLUTION: A first resonance circuit, disposed on a buck side of the converter for reducing the turn-off loss of a first active switching element. A second resonance circuit, disposed on a boost side of the converter for reducing the turn-on loss of a second active switching element. The converter comprises a first active switching element, a second active switching element and dual coils, a coupled inductor capable of storing energy, a first passive switching element and a second passive switching element. The first resonance circuit comprises a first inductor, a second inductor, a first auxiliary inductor, a first passive switching element, a second passive switching element and a first auxiliary inductor. The second inductor comprises a primary coil and an auxiliary coil. The second resonance circuit comprises a second auxiliary inductor, a third active switching element, a fourth active switching element, a third capacitor, a fourth capacitor and a second auxiliary inductor. PCOPYRIGHT: (C)2009,JPO&INPIT