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:
Apr. 02, 2019
Filed:
Apr. 05, 2017
Rohm Co., Ltd., Kyoto, JP;
Hiroki Takeuchi, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
An overcurrent detection circuit, which detects overcurrent of a load driving device arranged to drive a capacitance load by switching a voltage applied to the capacitance load between high level and low level, includes a clock signal generation unit arranged to generate a clock signal, a comparing unit arranged to compare a physical quantity corresponding to current supplied from the load driving device to the capacitance load with a predetermined value, and a determination unit arranged to determine whether or not the load driving device is in an overcurrent state based on the clock signal and a result of the comparison by the comparing unit, during a period in which the load driving device applies a high level voltage to the capacitance load.