Patent ID: 8040695

Claim:
A method of controlling a DC-DC converter having a predetermined maximum peak load current value, the DC-DC converter including first and second outputs to couple to a load, a capacitor coupled across the first and second outputs, an input to couple to a DC source having a DC voltage, a plurality of switches configured to convert the DC voltage to an AC voltage, and a transformer having a first winding and a second winding, the first winding being coupled to the plurality of switches and the second winding being coupled to the first and second outputs, the method comprising: in a first mode of operation, charging the capacitor to a predetermined output voltage value; in a second mode of operation, providing output current having the maximum peak load current value to a load coupled to the output of the DC-DC converter, wherein a first portion of the output current is provided by the DC-DC converter and a second portion of the output current is provided by discharging the capacitor to a voltage value that is less than the predetermined output voltage value; and controlling the plurality of switches, in the second mode of operation, to limit current in the second winding to a value that is less than the maximum peak load current value.