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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11551848 B1

PDFFull Text
Date of Patent:
Jan. 10, 2023

Filed:

May. 06, 2020

Planar transformer and switching power adapter

Applicant:

Huawei Digital Power Technologies Co., Ltd., Shenzhen, CN;

Inventors:

Yanjun Hu, Shenzhen, CN;

Zunqing Miao, Dongguan, CN;

Chunfu Wang, Shenzhen, CN;

Weiyang Zhao, Dongguan, CN;

Assignee:

Huawei Digital Power Technologies Co., Ltd., Shenzhen, CN;

Attorney:

Rimon PC

Primary Examiner:

Jeffrey T Carley

Int. Cl.
CPC ...
H01F 27/02 (2006.01); H01F 27/245 (2006.01); H01F 27/28 (2006.01); H05K 1/02 (2006.01); H05K 3/32 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H01F 27/02 (2013.01); H01F 27/245 (2013.01); H01F 27/2804 (2013.01); H01F 27/2866 (2013.01); H05K 1/0298 (2013.01); H05K 3/328 (2013.01); H01F 2027/2819 (2013.01); H02M 1/00 (2013.01);
Abstract

This application provides a planar transformer and a switching power adapter. The planar transformer includes a PCB winding and two magnetic cores. The two magnetic cores wrap two sides of a winding body of the PCB winding to form a closed magnetic loop. A first group of welding points is disposed on a primary-side wire side of the PCB winding, and a second group of welding points is disposed on a secondary-side wire side of the PCB winding. The planar transformer is directly welded to an external circuit board by using the first group of welding points and the second group of welding points. In this way, no pin needs to be welded on the PCB winding board. In addition, the planar transformer can be vertically installed on the external circuit board by using the first group of welding points and the second group of welding points.

Find Patent Forward Citations

Hu, Yanjun. (2023). Planar transformer and switching power adapter (U.S. Patent No. 11551848). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11551848

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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