公开(公告)号：US12046409B2

公开(公告)日：2024-07-23

申请号：US16611092

申请日：2017-05-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hongbo Zhang ,  Yongjun Dai ,  Xiaosong Liu ,  Qinghai Wang

IPC: H01F27/36 ,  H01F27/24 ,  H01F27/28

CPC classification number: H01F27/289 ,  H01F27/24 ,  H01F27/361

Abstract: A transformer and a switch-mode power supply are provided. The transformer includes: a magnetic core structure; several windings that surround a same magnetic cylinder in the magnetic core structure in a stacked manner, where the several windings include at least one primary-side winding and at least one secondary-side winding; and an electromagnetic shielding layer that is disposed between at least two adjacent windings, where the two adjacent windings are a primary-side winding and a secondary-side winding, and the electromagnetic shielding layer is made of a magnetic material. The electromagnetic shielding layer of the transformer can suppress a noise current of the winding, to reduce noise.

公开(公告)号：US20200168389A1

公开(公告)日：2020-05-28

申请号：US16611092

申请日：2017-05-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hongbo Zhang ,  Yongjun Dai ,  Xiaosong Liu ,  Qinghai Wang

IPC: H01F27/28 ,  H01F27/24 ,  H01F27/36

Abstract: A transformer and a switch-mode power supply are provided. The transformer includes: a magnetic core structure; several windings that surround a same magnetic cylinder in the magnetic core structure in a stacked manner, where the several windings include at least one primary-side winding and at least one secondary-side winding; and an electromagnetic shielding layer that is disposed between at least two adjacent windings, where the two adjacent windings are a primary-side winding and a secondary-side winding, and the electromagnetic shielding layer is made of a magnetic material. The electromagnetic shielding layer of the transformer can suppress a noise current of the winding, to reduce noise.

公开(公告)号：US10997109B2

公开(公告)日：2021-05-04

申请号：US16467455

申请日：2016-12-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yongjun Dai ,  Xiaosong Liu ,  Wenliang Zhang ,  Cheng He

IPC: G06F13/20 ,  G06F13/40 ,  H01R13/6594 ,  H01R13/66 ,  H05K1/02 ,  H05K1/16 ,  H05K1/18

Abstract: An electronic device comprising a USB port and a PCB is provided. A first cabling layer of the PCB has a first floating area and a line outside the first floating area, an insulation medium is between the first floating area and the line, a second cabling layer of the PCB is adjacent to the first cabling layer and has a first metal area, an orthographic projection of the first floating area on the second cabling layer and the first metal area have an overlapping area, and the first floating area is not connected to the first metal area; and a metal housing of the USB port has a plurality of fixed contacts fastened to the PCB and not connected to a ground of the PCB, the contacts include a first fixed contact connected to the first floating area and not connected to the first metal area.