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:
Nov. 12, 2013
Filed:
Aug. 07, 2012
Applicant:
Hironori Sumitomo, Kyoto, JP;
Inventor:
Hironori Sumitomo, Kyoto, JP;
Assignee:
Rohm Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F 1/40 (2006.01);
U.S. Cl.
CPC ...
Abstract
A switching power supply apparatus includes: an output transistor to generate an output voltage from an input voltage based on an ON/OFF control of the output transistor; a reference voltage generating unit to generate a reference voltage; a ripple injection unit to inject a ripple component into the reference voltage to generate a ripple reference voltage; a comparator to compare a feedback voltage with the ripple reference voltage to generate a comparison signal; and a switching controller to perform the ON/OFF control of the output transistor based on the comparison signal.