公开(公告)号：US20240175948A1

公开(公告)日：2024-05-30

申请号：US18436724

申请日：2024-02-08

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Shu Zhong ,  Xiaolu Hu ,  Xiaming Jing ,  Liqiong Yi ,  Xiaoqing Hu ,  Tao Xie

IPC: G01R33/09 ,  G01R19/00 ,  H02M1/00

CPC classification number: G01R33/091 ,  G01R19/0092 ,  H02M1/0009

Abstract: A current detection apparatus includes a magnetic sensor, configured to sense a magnetic field change of a to-be-tested current path, and convert the magnetic field change into an electrical signal; and a magnetically conductive unit, including a magnetically conductive material. The magnetically conductive unit is disposed on at least one of the following positions: a left side of the magnetic sensor, a right side of the magnetic sensor, and an upper side of the magnetic sensor, and the left side and the right side of the magnetic sensor are a left side and a right side of the magnetic sensor along the to-be-tested current path.

公开(公告)号：US20240295586A1

公开(公告)日：2024-09-05

申请号：US18662985

申请日：2024-05-13

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Liqiong Yi ,  Zezhou Yang ,  Xiaolu Hu ,  Shaoxian Chen

IPC: G01R15/20

CPC classification number: G01R15/205

Abstract: A magnetic sensor includes a printed circuit board and a tunnel magneto-resistance element. The printed circuit board includes a target trace. When the tunnel magneto-resistance element is installed, the tunnel magneto-resistance element is installed right above or right below the target trace, and a ratio of a distance D between a detection unit in the tunnel magneto-resistance element and an edge on a side of the target trace closest to the tunnel magneto-resistance element to a width W of the target trace is between 3.0% and 20.0%.