Patent ID: 8995156
Filing Date: 2015-03-31
Classification: H02M,Y02B

Abstract:
1. A direct current to direct current (DC/DC) converter comprising: a resonant converter stage configured to receive an input voltage, the resonant converter stage including a bridge circuit having a number of pairs of power switches; a buck stage configured to output an output voltage and an output current, the buck stage being electrically connected in series with the resonant converter stage and including a buck switch; and a processor apparatus configured to sense said output voltage and said output current, and, based on the sensed output voltage and the sensed output current, to perform one of: (a) fixing a switching frequency of the bridge circuit to a predetermined maximum switching frequency and controlling said output voltage by controlling a duty cycle of the buck switch, and (b) fixing the duty cycle of the buck switch to a predetermined duty cycle and controlling said output voltage by controlling the switching frequency of the bridge circuit.