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.

Date of Patent:
Mar. 21, 2023

Filed:

Mar. 10, 2020
Applicant:

Tdk Corporation, Tokyo, JP;

Inventors:

Kazuki Ishizawa, Tokyo, JP;

Ken Takayama, Tokyo, JP;

Masayoshi Ono, Tokyo, JP;

Jyunya Hiura, Tokyo, JP;

Assignee:

TDK CORPORATION, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 27/28 (2006.01); H05K 1/02 (2006.01); H01F 30/06 (2006.01); H02M 3/335 (2006.01); H02M 3/00 (2006.01);
U.S. Cl.
CPC ...
H01F 27/2804 (2013.01); H01F 30/06 (2013.01); H02M 3/33573 (2021.05); H05K 1/0233 (2013.01); H01F 2027/2819 (2013.01); H02M 3/003 (2021.05); H02M 3/01 (2021.05);
Abstract

A transformer includes a primary winding and a secondary winding, which are flat, and a magnetic core that has a middle leg that passes through the primary and secondary windings, a first core that is connected to one end along the length direction of the middle leg, and a second core that is connected to the other end along the length direction. A first wall surface on the side of the first core where the middle leg is positioned and a second wall surface on the side of the second core which faces the first wall surface are formed so as to be parallel, the primary winding is fixed to the first wall surface, the secondary winding is fixed to the second wall surface, and the distance between the primary winding and the secondary winding is kept constant.


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