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:
Dec. 18, 2018
Filed:
Nov. 02, 2017
Rohm Co., Ltd., Kyoto, JP;
Shidong Guan, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
A DC/DC converter includes a switching element connected to an input voltage so as to be turned on/off, a driving circuit arranged to perform ON/OFF control of the switching element, an inductor arranged to flow current controlled by the switching element, a smoothing capacitor connected to the inductor so as to perform rectifying operation together with the inductor, an oscillator arranged to generate a rectangular wave signal for operating the driving circuit, and an output current detector arranged to detect output detection current flowing in the switching element or the inductor. The oscillator generates the rectangular wave signal at a fixed oscillation frequency when the output detection current is a predetermined value or larger, while it generates the rectangular wave signal at an oscillation frequency lower than the fixed oscillation frequency and proportional to the output detection current when the output detection current is smaller than the predetermined value.