Patent ID: 9166481
Filing Date: 2015-10-20
Classification: H02M,Y02B

Abstract:
1. A method of synchronously operating a power converter in a series of converter operating cycles, the converter having at least one primary switch to drive a resonant power train and at least one secondary switch, the resonant power train including a transformer and having a characteristic resonant frequency and period, the method comprising: providing an oscillator for generating clock signals at an oscillator frequency; generating timing control signals for each of a plurality of events based upon the clock signals in a (A) standard converter operating cycle, having a standard operating period and frequency, to: (i) turn the at least one primary switch ON and OFF at times when essentially zero voltage is impressed across the respective at least one primary switch and essentially zero resonant current is flowing in the respective at least one primary switch; and (ii) turn the at least one secondary switch ON and OFF at times when essentially zero current is flowing in the respective at least one secondary switch and essentially zero voltage is impressed across the respective at least one secondary switch; and wherein the oscillator frequency is preset, and the timing of the timing control signals for one or more selected events may be set independently of other timing control signals and events.