Patent ID: 8593830

Claim:
A DC-to-DC converter comprising: a transformer having a primary winding coupled to a forward current path and a reverse current path, wherein the forward current path is configured to source a forward current from a top of the primary winding to a bottom of the primary winding during a power phase of a switching cycle of the DC-to-DC converter, and wherein the reverse current path is configured to source a reverse current from the bottom of the primary winding to the top of the primary winding during a reset phase of the switching cycle; a sensing element configured to sense the forward and reverse currents; and a controller configured to control the forward and reverse currents based on sensed values thereof, wherein the controller is further configured to discontinue the forward current during a remainder of the power phase if the forward current is above a predetermined first threshold and to discontinue the reverse current during a remainder of the reset phase if the reverse current is below a predetermined second threshold.