A high-density control circuit for an auxiliary resonant commutation pole (ARCP) circuit is internal to the ARCP package and includes a state machine sequencer for providing control and timing signals to achieve high-efficiency, zero-voltage, and fault-tolerant switching converter operation. The phase...http://www.google.ca/patents/US5892673?utm_source=gb-gplus-sharePatent US5892673 - Robust, high-density, high-efficiency state sequence controller for an auxiliary resonant commutation pole power converter
