公开(公告)号：US20230078628A1

公开(公告)日：2023-03-16

申请号：US17815948

申请日：2022-07-29

Applicant: DELTA ELECTRONICS, INC.

Inventor： Wen-Yu HUANG ,  Shih-Hsun WANG ,  Hung-Chuan LIN

IPC: H02M3/335 ,  H02M1/34

Abstract: An isolated converter includes an input circuit, a transformer, a first switch, a second switch and a snubber circuit. The input circuit includes at least two input capacitors, and is configured to provide an input voltage. A divider node is arranged between the at least two input capacitors. The transformer includes a primary winding and a secondary winding to generate an output voltage on the secondary winding according to the input voltage. The primary winding of the transformer is electrically connected between the first switch and the second switch. The snubber circuit is electrically connected between the first switch and the second switch, and forms a discharge path with the primary winding. The snubber circuit is configured to receive a reflected voltage from the secondary winding back to the primary winding, and the divider node is connected to the discharge path.