Seclusion type interleaving parallel connection DC/DC converter with switch capacitance

The present invention discloses an isolated type interleaving DC/DC converter with a switching capacitor, comprising two power switching tubes, two output diodes, two clamping diodes, two auxiliary power switching tubes, two clamping capacitors, two switching capacitors, one output capacitor and two flyback transformers. The converter uses the second windings and two switching capacitors of two flyback transformers to realize the improvement of the output power level of the converter. Two auxiliary switching tubes and two clamping capacitors are respectively used for absorbing the leakage inductance energy of the two flyback converters. The parallel capacitors existed in the two power switching tubes and the gate pole arrangement of the two power switching tubes and the two auxiliary switching tubes are used for realizing the zero voltage cutover and the zero voltage shutoff of the two power switching tubes and the two auxiliary switching tubes. The leakage inductance of the two flyback converters is used for realizing the soft shutoff of the two output diodes and the two clamping diodes. The circuit has no dissipative elements, and the power class and the circuit efficiency of the converter can be improved.