Patent ID: 7511976
Filing Date: 2009-03-31
Classification: H02M

Abstract:
1. A switch circuit for selectively controlling conduction of current between first and second circuit nodes of a power converter, the switch circuit comprising: a switching device having first and second switch terminals coupled with the first and second circuit nodes, respectively, and a control terminal receiving a switching signal to selectively operate the switching device in one of a conductive state and a nonconductive state for controlling the conduction of current between first and second circuit nodes; a switch driver having an output terminal coupled with the control terminal of the switching device and at least one power terminal for receiving power, the switch driver being operative to provide the switching signal according to a received switch control signal using power from the at least one power terminal; a snubber circuit having a snubber storage device and first and second snubber terminals with one of the snubber terminals being coupled with one of the first and second circuit nodes; and a supply circuit comprising;