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. 03, 2015
Filed:
May. 04, 2012
Nobukazu Tsukiji, Kyoto, JP;
Kazuhiro Murakami, Kyoto, JP;
Nobukazu Tsukiji, Kyoto, JP;
Kazuhiro Murakami, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
A switching transistor is arranged between a switching (SW) terminal and the ground terminal. An error amplifier amplifies the difference between the feedback voltage Vthat corresponds to the output voltage Vwith a predetermined reference voltage Vso as to generate an error voltage V. A pulse modulator generates a pulse signal Shaving a duty ratio that is adjusted according to the error voltage V. A driver drives a switching transistor according to the pulse signal S. An overvoltage detection circuit generates an overvoltage protection (OVP) signal which is asserted when the voltage at the switching (SW) terminal becomes higher than a predetermined threshold voltage. When the OVP signal is asserted, a control circuit performs a predetermined protection operation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile