Research and application of zero-voltage zero-current switching power supply

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Research and application of zero-voltage zero-current switching power supply [Copy link]

Abstract: A new soft switching circuit topology is proposed. Through simulation analysis and experimental verification, the zero-voltage and zero-current switching characteristics of the converter are realized, the switching loss is reduced, and it has been applied to communication switching power supplies.

Keywords: Converter, Zero Voltage, Zero Current Switch, Simulation

At present, the phase-shifted full-bridge zero-voltage PWM (FB?ZVS?PWM) converter with the characteristics of resonant soft switching and PWM control has been widely used. Since the power switching device realizes zero voltage switching, the switching loss is reduced and the stability of the power supply system is improved. However, the FB?ZVS?PWM converter still has the disadvantages of serious duty cycle loss and large loop conduction loss. To this end, based on the above research, this paper proposes a new zero-voltage zero-current topology structure to improve the operating state of the device. Through simulation analysis and experimental research, the zero-voltage zero-current switching characteristics of the converter are realized, and it has been successfully used in communication switching power supplies.