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:
Sep. 01, 2015
Filed:
Jul. 03, 2013
Rohm Co., Ltd., Kyoto, JP;
Yoshinori Sato, Kyoto, JP;
Satoru Nate, Kyoto, JP;
ROHM CO., LTD., , JP;
Abstract
An external resistor is connected to a detection terminal. A pulse modulator is configured to generate a pulse signal Shaving a duty ratio adjusted such that the output voltage Vof a DC/DC converter approaches a target value. A pulse modulator is configured to switch the pulse signal Sto a level that corresponds to the off level of the switching transistor according to a detection voltage Vthat develops at the detection terminal. A short-circuit detection circuit is configured to generate a short-circuit detection signal which is asserted when the detection voltage Vis higher than a predetermined threshold voltage Vafter a judgment time elapses after the pulse signal Sis switched to an on level that corresponds to the on state of the switching transistor. When the short-circuit detection signal is asserted, the pulse modulator is configured to switch the pulse signal Sto the off level.