Patent ID: 7924579

Claim:
An apparatus, comprising: a transformer having a primary winding and a tapped secondary winding, the secondary winding having a first terminal, a second terminal, and a tap terminal; a first switching device coupled to the primary winding for generating changes in voltage across the primary winding such that the primary winding transfers energy to the secondary winding; an output inductor having first and second ends; a first rectifier coupled to the first terminal of the secondary winding and to the first end of the output inductor; an output capacitor coupled to the second end of the output inductor and to the tap terminal of the secondary winding; and a second rectifier coupled to the second terminal of the secondary winding and directly coupled to the second end of the output inductor, wherein the polarity of the first rectifier from the first terminal of the secondary winding is the same as the polarity of the second rectifier from the second terminal of the secondary winding.