A full bridge circuit including a transformer for performing voltage conversion including a primary side winding and a secondary side winding, an input capacitor for supplying an input power, and a first switch to a fourth switch, A first rectifier circuit connected to the secondary side winding and having a first diode to a fourth diode, a second rectifier circuit connected to the rectifier circuit, And an additional switch comprising a fifth diode, a sixth diode provided between the clamp capacitor and the fifth diode, an additional switch provided between the clamp capacitor and the sixth diode, and an output inductor The energy received from the primary side circuit through the transformer, A soft switching full bridge converter comprising an output inductor and a secondary circuit delivering it to an output capacitor coupled to the additional circuit.
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