Patent ID: 8582321
Filing Date: 2013-11-12
Classification: H02M,Y02B

Abstract:
1. A resonant converter, suitable for operating in a normal mode or a burst mode, the resonant converter comprising: a square-wave generator for providing a square-wave voltage; a resonant circuit, receiving the square-wave voltage; and a controller, providing a control signal for driving the square-wave generator during a burst mode working period of the burst mode, wherein the resonant converter operates at light load or No-load condition during the burst mode, the control signal comprises at least one first pulse group and at least one second pulse group, the first pulse group comprises at least one first regulation pulse, and the second pulse group comprises a plurality of driving pulses, and the square-wave generator pre-adjusts a magnetizing inductor current and a resonant capacitor voltage in the resonant circuit according to the first regulation pulse, such that at each rising edge of each driving pulse of the second pulse group the magnitude of the magnetizing inductor current is essentially the same and the magnitude of the resonant capacitor voltage is essentially the same.