公开(公告)号：US20230006560A1

公开(公告)日：2023-01-05

申请号：US17752587

申请日：2022-05-24

Applicant: Delta Electronics, Inc.

Inventor： Zhongwang Yang ,  Qi Xia

IPC: H02M3/335 ,  H02M1/00 ,  H02M3/00

Abstract: The present disclosure provides a power conversion circuit including positive and negative input terminals, a clamping branch circuit, a first primary switch, a transformer, a rectifier circuit, a resonant inductor, a resonant capacitor, and positive and negative output terminals. The clamping branch circuit includes a clamping capacitor and a second primary switch serially connected between the first and second terminals thereof. The first terminal is coupled to the positive input terminal. The first primary switch is connected between the second terminal and the negative input terminal. The primary winding of the transformer is connected to the clamping branch circuit in parallel. The rectifier circuit includes first and second bridge arms connected in parallel. Connection terminals in the first and second bridge arms are coupled to two terminals of the secondary winding of the transformer correspondingly. The first and second bridge arms are coupled between the positive and negative output terminals.

公开(公告)号：US20210272737A1

公开(公告)日：2021-09-02

申请号：US17167329

申请日：2021-02-04

Applicant: Delta Electronics, Inc.

Inventor： Da Jin ,  Yang Leng ,  Zhongwang Yang ,  Qinghua Su

IPC: H01F27/26 ,  H01F27/28 ,  H01F27/34 ,  H01F27/29 ,  H05K1/11

Abstract: A magnetic assembly includes a magnetic core, four primary windings and four secondary windings. The magnetic core includes four lateral legs. The four primary windings and the corresponding secondary windings are magnetically coupled with each other, and the four primary windings and the corresponding secondary windings are wound on the corresponding lateral legs. The winding directions of the four secondary windings on the corresponding lateral legs are identical. A phase difference between a magnetic flux flowing through a specified lateral leg of the four lateral legs and a magnetic flux flowing through an adjacent lateral leg is any value in the range between 150 degrees and 210 degrees. A phase difference between the magnetic flux flowing through the specified lateral leg and the magnetic flux flowing through another adjacent lateral leg is any value in the range between 60 degrees and 120 degrees.