Patent ID: 9660580
Date: 2017-05-23
CPC Classifications: H02M,H03B,Y02B

Claim:
1. A power inverter, comprising: an input for receiving DC power; an output for providing AC power to a load; a high frequency switching control circuit, operatively coupled to the input; a synchronous-buck circuit, operatively coupled to the high frequency switching control circuit and the output, the synchronous buck circuit comprising a plurality of switches and configured to invert every half cycle of the signal provided by the high frequency switching control circuit; a low frequency switching circuit, operatively coupled to the synchronous buck circuit and the output, the low frequency switching circuit comprising a plurality of switches and configured to operate as at least one of a zero voltage switching and a zero current switching drive; a capacitive circuit comprising a discharge capacitor, the capacitive circuit operatively coupled to the output, the low frequency switching circuit and the synchronous buck circuit, the capacitive circuit being configured to discharge the discharge capacitor to zero on at least one zero crossing of low frequency switching circuit.