Power converter

Abstract

The present invention discloses a power converter. The sub input port of each conversion unit receives the input voltage. The input capacitor of each conversion unit is connected with the corresponding sub input port of the conversion unit. The linear regulator steps down the input voltage when the input voltage is received. The first switching element is connected between the conversion unit and the auxiliary power supply. The second switching element is connected between the linear regulator and the auxiliary power supply. When any one of the plurality of conversion units starts up, the first switching element is turned off and the second switching element is turned on. The input voltage is provided to the auxiliary power supply through the linear regulator and the second switching element. When a voltage across the input capacitor reaches dynamic equilibrium, the second switching element is turned off and the first switching element is turned on. The conversion unit is served as an energy source so as to provide power to the auxiliary power supply through the first switching element.

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