ADAPTIVE SOFT SWITCHING CONTROL FOR POWER CONVERTER

摘要

Control apparatus for use in controlling a power converter adapted to carry out power conversion between a high-voltage end and a low-voltage end. The control apparatus comprises an input configured for receiving at least one input signal conveying a sensed voltage across the high-voltage end, a sensed voltage across the low-voltage end and a sensed current through the low-voltage end; circuitry configured for determining a target switching frequency, a target dead time and a target duty cycle for the converter based at least in part on the sensed voltages, the sensed current and at least one circuit characteristic of the converter; and an output configured for releasing at least one output signal to cause the converter to carry out soft switching in accordance with the target switching frequency, the target dead time and the target duty cycle.