ADAPTIVE DEAD TIME CONTROL APPARATUS AND METHOD FOR SWITCHING POWER CONVERTERS

摘要

An embodiment apparatus comprises a secondary synchronous rectifier (110) and a secondary gate drive controller (102) coupled to a transformer winding. The secondary gate drive controller (102) is configured to generate a forward gate drive signal for the forward switch ( Qm ) and generate a freewheeling gate drive signal for the freewheeling switch ( QFW ), wherein the secondary gate drive controller (102) generates a dead time between the forward gate drive signal and the freewheeling gate drive signal.