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:
Jan. 30, 2018
Filed:
Jan. 08, 2015
Applicant:
Sharp Kabushiki Kaisha, Osaka, JP;
Inventors:
Assignee:
Sharp Corporation, Csaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/335 (2006.01); H02M 1/44 (2007.01); H02M 7/12 (2006.01); H02M 1/12 (2006.01); H02M 1/42 (2007.01); H02M 7/217 (2006.01);
U.S. Cl.
CPC ...
H02M 3/33592 (2013.01); H02M 1/44 (2013.01); H02M 3/33523 (2013.01); H02M 7/125 (2013.01); H02M 1/126 (2013.01); H02M 1/4258 (2013.01); H02M 7/2176 (2013.01); Y02B 70/126 (2013.01);
Abstract
In a switching power supply circuit of the invention, a low-voltage node capacitor is connected between a primary-side low-voltage stable potential node and a secondary-side low-voltage stable potential node, and a high-voltage node capacitor is connected between a primary-side high-voltage stable potential node and an anode of a rectifier element. Thereby, it is possible to provide the switching power supply circuit which achieves, with a simple configuration, both of noise reduction and potential stabilization of stable potential nodes.