Patent ID: 8957645
Filing Date: 2015-02-17
Classification: H02M,Y02B

Abstract:
1. A method comprising: transferring energy from an input through a first switch to an inductor thereby storing the energy on the inductor during first phases of respective periodic switching cycles of a power converter; transferring the energy stored on the inductor through a second switch to an output during second phases of the respective periodic switching cycles; zero volt switching off the first switch at a beginning of a transition from the first shale to the second phase of each respective periodic switching cycle; zero volt switching on the second switch at an end of the transition from the first phase to the second phase of each respective periodic switching cycle; and discharging or charging an auxiliary capacitor via a current path through the inductor while the first and second switches are off during the transition from the first phase to the second phase of each respective periodic switching cycle.