Patent ID: 7839666
Filing Date: 2010-11-23
Classification: H02M

Abstract:
1. A power converter system comprising: an input terminal for receiving a DC input voltage; an output terminal at which AC power is delivered to a load; a transformer coupled between the input terminal and the output terminal, the transformer having a first winding, a second winding, and a third winding, wherein the output terminal is coupled to the second winding; a half-bridge circuit coupled between the input terminal and the first winding of the transformer, the half-bridge circuit comprising a first switch and a second switch coupled at a common node, the first and second switches operable to be turned on and off for causing current to flow in the transformer during operation of the power converter system; and a clamping circuit close coupled to the first winding of the transformer, the clamping circuit operable to clamp the common node of the half-bridge circuit, thereby controlling a voltage at the common node when both the first and second switches are turned off.