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.:
Date of Patent:
Jun. 09, 2026
Filed:
Jul. 21, 2021
Applicant:
Rohm Co., Ltd., Kyoto, JP;
Inventors:
Assignee:
ROHM CO., LTD., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 17/691 (2006.01); H01F 27/28 (2006.01); H01F 27/29 (2006.01); H01F 30/16 (2006.01); H02M 1/08 (2006.01);
U.S. Cl.
CPC ...
H03K 17/691 (2013.01); H01F 27/2804 (2013.01); H01F 27/292 (2013.01); H01F 30/16 (2013.01); H02M 1/08 (2013.01); H01F 2027/2809 (2013.01);
Abstract
A driving circuit controls driving of a switching element by outputting a driving signal to the switching element. The driving circuit includes an air-core transformer having a plurality of primary windings and a secondary winding magnetically coupled to each of the plurality of primary windings. An AC signal is input to each of the plurality of primary windings of the air-core transformer. The plurality of primary windings includes a first primary winding and a second primary winding. There is a phase difference between an AC signal input to the first primary winding and an AC signal input the second primary winding.