Patent ID: 8391029

Claim:
A DC-DC converter, comprising an input diode, a first output diode and a first output filter capacitor; a first switch, operative to couple an input voltage to an anode of the input diode; a magnetizing inductor, having a first terminal and a second terminal, wherein the first terminal of the magnetizing inductor is coupled to a cathode of the input diode; a second switch, operative to couple the second terminal of the magnetizing inductor to a ground; and a first resonant capacitor and a first resonant inductor, coupled in series between the second terminal of the magnetizing inductor and the ground, wherein a first connection node, between the first resonant capacitor and the first resonant inductor, is coupled to a first terminal of the first output filter capacitor, via the first output diode, to regulate a voltage of the first output filter capacitor; wherein: a second terminal of the first output filter capacitor is coupled to the ground; the first terminal of the first output filter capacitor is further coupled to a first load to provide the first load with a first output voltage; and the first switch and the second switch are turned on alternately.