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:
Feb. 07, 2017
Filed:
Mar. 04, 2016
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Lin Min, Tokyo, JP;
Ken Matsuura, Tokyo, JP;
Assignee:
TDK CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/156 (2006.01);
U.S. Cl.
CPC ...
H02M 3/156 (2013.01);
Abstract
A control circuit controls a switching element in a switching power supply unit. The control circuit includes: a controller connected to the switching element; a signal generating circuit connected to the input part of the controller; a reference voltage source connected to the signal generating circuit; and a comparator having a first input terminal to which an output voltage is input from the switching power supply unit, a second input terminal to which a comparison signal is input from the signal generating circuit, and an output terminal connected to the signal generating circuit and to the input part of the controller.