Patent ID: 8723428
Filing Date: 2014-05-13
Classification: H02M,H05B,Y02B

Abstract:
1. A resonant DC-DC converter, comprising: a half-bridge converter configured to receive DC input power and produce a square wave voltage, a resonant tank circuit comprising an inductive element, a first resonance capacitor, and a second resonance capacitor, wherein the resonant tank circuit is coupled to the half-bridge converter to receive the square wave voltage such that a generally sinusoidal AC voltage is produced across the second resonance capacitor, an output transformer having a primary winding and one or more secondary windings, the primary winding coupled in parallel to the second resonance capacitor, a clipping circuit coupled on an output side of the resonant tank circuit to the primary winding such that a voltage across the primary winding does not substantially exceed a voltage of the DC input power, and an output rectifier coupled to the one or more secondary windings and configured to produce a generally DC output voltage.