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A current-driven soft-switched full-bridge converter is presented. It contains a snubber formed by a switched-capacitor circuit and a resonant inductor, connected in the primary side. The transformer leakage inductance is used as a part of the resonant circuit. All the main switches are turned-on/off with zero-current-switching (ZCS), and the switches in the snubber are zero-voltage-switched (ZVS)...
A new topology of full-bridge converter is proposed featuring zero-voltage-switching (ZVS) of active switches over a wide range of input voltage and load. In contrast to conventional techniques, the current through the auxiliary inductor of the proposed converter is controlled by the load current. Therefore, the ZVS operation over the wide conversion range is achieved without significantly increasing...
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