公开(公告)号：US20240128853A1

公开(公告)日：2024-04-18

申请号：US18145267

申请日：2022-12-22

Applicant: Richtek Technology Corporation

Inventor： Jung-Sheng CHEN ,  Chih-Chun CHUANG ,  Yong-Chin LEE

IPC: H02M1/32 ,  H02M1/08 ,  H02M3/158 ,  H03K3/037

CPC classification number: H02M1/32 ,  H02M1/08 ,  H02M3/158 ,  H03K3/037 ,  H03K5/24

Abstract: A power converter that properly copes with the wiring defects on a feedback path is shown. According to a control signal, a power driver couples an input voltage to an energy storage element to provide an output voltage that is down-converted from the input voltage. The output voltage is further converted into a feedback voltage by a feedback circuit, and is entered to an error amplifier with a reference voltage for generation of an amplified error. A control signal generator generates the control signal of the power driver according to the amplified error. The power converter specifically has a comparator, which is enabled in a soft-start stage till the output voltage reaches a stable status. The comparator compares the amplified error with a critical value. When the amplified error exceeds the critical value, the input voltage is disconnected from the energy storage element.