Patent ID: 8014176

Claim:
A resonant switching power circuit, comprising: a resonant circuit including at least one inductance and at least one capacitance for transferring energy to an output of the resonant switching power circuit; a switching circuit coupled to the resonant circuit for transferring energy from an input voltage source to the resonant circuit; and a control circuit for controlling the switching circuit, wherein the control circuit has a burst mode of operation in which a number of pulses are generated in bursts to provide the energy to the output of the resonant switching power circuit intermittently when energy demand at the output of the resonant switching power circuit is low, wherein the pulses within the bursts have a non-uniform pattern such that at least one transient at the start or end of the burst is reduced in amplitude, and wherein at least one ending pulse or at least one beginning pulse of the bursts has a predetermined duration that differs from another predetermined duration of pulses in a middle of the bursts.