Patent ID: 9379628
Filing Date: 2016-06-28
CPC Classification: H02M,Y02B

Claim Text:
1. A method of feedback commanding a resonant converter, comprising: executing cyclically the following sequence of operations: turning on low-side switches of a full-bridge primary switching stage and first and second switches of a secondary rectification stage and turning off high-side switches of the primary switching stage, the resonant converter including: switching the switches of the primary switching stage such to energize the primary switching circuit with a positive half-wave, while keeping on the switches of the secondary rectification stage and monitoring a current flowing through said first switch; turning off the first switch and monitoring a voltage at the first switch, in response to detecting a zero cross condition of the current flowing through said first switch; carrying out one of the two following operations: turning on the low-side switches and the first and second switches and turning off the high-side switches; switching the switches of the primary switching stage such to energize the primary circuit with a negative half-wave, while keeping on the switches of the secondary rectification stage and monitoring a current flowing through said second switch; turning off the second switch and monitoring a voltage at the second switch, in response to detecting a zero cross condition of the current flowing through said second switch; and carrying out one of the two following operations: