Patent ID: 8018309

Claim:
A method for improving the efficiency of a power supply device, comprising: providing a power conversion device that that is coupled to an information handling system (IHS) display panel and a power source and that is operable to receive a direct current (DC) input from the power source, wherein the power conversion device includes: a transformer having a plurality of windings and a physical core that are operable to convert the DC input to an alternating current (AC) output that is sufficient to power the IHS display panel, and wherein the transformer includes an energy radiating outer surface; a conductive layer that is adjacent to and spaced apart from the transformer; and a magnetic shielding layer located between the energy radiating outer surface of the transformer and the conductive layer; radiating energy from the energy radiating outer surface of the transformer in response to the plurality of windings and the physical core in the transformer converting the DC input to the AC output in order to power the IHS display panel; directing energy radiated from the energy radiating outer surface of the transformer back towards the transformer using the magnetic shielding layer, wherein the directing of the energy back towards the transformer prevents that energy from inducing an eddy current in the conductive layer.