Patent ID: 7915876

Claim:
A power converter comprising: three terminals; a switch coupled to be turned on and off in response to a control signal; a first diode having first and second terminals; a first inductor coupling a first junction in a path between the switch and the first diode to a third terminal of the three terminals; and a snubber circuit coupled to reduce switching losses in the power converter, the snubber circuit comprising: a second inductor coupled to the first terminal of the first diode, a first terminal of the three terminals being coupled to a second terminal of the three terminals through the switch, the second inductor, and the first diode; a second diode coupled to a first end of the second inductor; a resistor coupled to a second end of the second inductor and to the second diode; and a capacitor coupled between the second terminal of the first diode and a second junction between the second diode and the resistor, wherein the switch being turned on causes the second inductor, the second diode, the resistor and the capacitor of the snubber circuit as coupled to maintain a forward bias of the first diode as the switch is turned on, and wherein the switch being turned off causes the second inductor, the second diode, the resistor and the capacitor of the snubber circuit as coupled to attain a voltage at the switch that is a fraction of a voltage at the second terminal of the three terminals as the switch is turned off.