公开(公告)号：US20130229833A1

公开(公告)日：2013-09-05

申请号：US13865524

申请日：2013-04-18

Applicant: RICHTEK TECHNOLOGY CORP.

Inventor： Liang-Pin TAI ,  Tzu-Chen LIN ,  Cheng-Hsuan FAN

IPC: H02M3/335

CPC classification number: H02M3/33523

Abstract: A feedback circuit for an isolated power converter includes an opto-coupler and a reversed polarity regulator. The opto-coupler provides a current related to an output voltage of the isolated power converter. When the isolated power converter enters light load, the output voltage rises and the reversed polarity regulator reduces the current to decrease the power consumption and thus improve the light load efficiency of the isolated power converter.

Abstract translation: 用于隔离电力转换器的反馈电路包括光耦合器和反极性调节器。 光耦合器提供与隔离功率转换器的输出电压相关的电流。 当隔离电源转换器进入轻负载时，输出电压升高，反极性调节器降低电流以降低功耗，从而提高隔离电源转换器的轻负载效率。