Patent ID: 6201719
Filing Date: 2001-03-13
Classification: H02M

Abstract:
For use with a full bridge power converter having controllable switches, a controller, comprising:a signal generator circuit having outputs and designed to drive said controllable switches in a phase-shifted mode; anda switching network, coupled to said signal generator circuit, adapted to enable said signal generator circuit to operate said converter in an alternative one of:said phase-shifted mode, wherein said switching network is configured to couple each of said outputs to a corresponding one of said controllable switches, said controllable switches in each of first and second legs of said converter being complementarily switched, said signal generator circuit capable of adjusting a relative phase between said first and second legs; anda normal mode, wherein said switching network is configured to couple only one pair of said outputs to said controllable switches, diagonal pairs of said controllable switches being switched substantially simultaneously and at a substantially full duty cycle.