Patent ID: 8576585
Filing Date: 2013-11-05
Classification: H02M

Abstract:
1. A power device comprising: a power supply module having a feedback compensating terminal and an output terminal, the feedback compensating terminal providing a related voltage of output power, the output terminal providing an output voltage; a comparing unit coupled with the feedback compensating terminal and comparing the related voltage of output power with a predetermined voltage; a feedback control unit coupled with the output terminal and providing a feedback voltage; and an electrical isolation module, having a first side and a second side, the first side of the electrical isolation module coupled with the comparing unit and the feedback compensating terminal, the second side of the electrical isolation module coupled with the feedback control unit, wherein when the related voltage of output power is smaller than the predetermined voltage, the feedback voltage turned on the electrical isolation module and make the power supply module adjust the output voltage; wherein the feedback control unit includes a standby mode switching circuit and a feedback voltage control circuit, the standby mode switching circuit is coupled with the electrical isolation module, and the feedback voltage control circuit is coupled with the standby mode switching circuit and the electrical isolation module.