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. 19, 2019
Filed:
Feb. 09, 2017
Rohm Co., Ltd., Kyoto, JP;
Wataru Suzuki, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
A semiconductor device includes: a first switching power supply part including a switching element, an inductor connected to the switching element, and a pulse width modulation (PWM) driving signal generating part configured to generate a PWM driving signal having a duty controlled based on a feedback of an output voltage, wherein the switching power supply part is configured to switching-drive the switching element based on the PWM driving signal to generate the output voltage from an input voltage and supply the output voltage to a load; and an abnormality detecting part having a duty calculation part configured to calculate the duty of the PWM driving signal and a comparing part configured to compare the calculated duty and a predetermined first threshold value to output a first detection signal to indicate abnormality when the duty is lower than the first threshold value.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile