Constant frequency, zero-voltage-switching converters with resonant switching bridge

摘要: A novel, compact, converter structure utilizes a switching bridge configuration to provide low voltage stress, constant frequency controlled whose switches and diodes all turn-on turn-off with zero-voltage-switching. The novel uses full-bridge circuit comprising four D1 -D4 and, in one embodiment, active semiconductor S1 -S4. resonant inductor Lr is connected across the nodes b, parasitic capacitance of -S4 are incorporated an L-C circuit. Connected parallel source or sink, depending on direction that power will flow; node b current again upon flow. present invention stores sufficient energy so prior each switch diode commutation, charge corresponding may be removed by drawing action Lr. In this way, operate directs flow from load, while passively guaranteeing limitation switch, providing volts-seconds balance for