Patent ID: 7330017
Filing Date: 2008-02-12
Classification: H02M,H03K,Y02B

Abstract:
1. A power converter couplable to a source of electrical power adapted to provide an input voltage thereto, comprising: a power train including a switch, referenced to said input voltage and subject to a control voltage limit, configured to conduct for a duty cycle and provide a regulated output characteristic at an output of said power converter; a controller configured to provide a signal to control said duty cycle of said switch; and a driver including switching circuitry referenced to a voltage level different from said input voltage and configured to provide a drive signal for said switch within said control voltage limit as a function of said signal from said controller, said switching circuitry including a first pair of series-coupled driver switches of opposite polarity having a first common node therebetween, a control terminal of one of said driver switches of said first pair of series-coupled driver switches cross coupled through a clamp driver switch to a second common node between a second pair of series-coupled driver switches of opposite polarity, and a control terminal of one of said driver switches of said second pair of series-coupled driver switches cross coupled through another clamp driver switch to said first common node.