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:
Nov. 14, 2017
Filed:
Feb. 02, 2015
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Atsushi Yamada, Nagoya, JP;
Assignee:
SEIKO EPSON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 31/40 (2014.01); H02H 7/08 (2006.01); H02P 29/024 (2016.01); H02P 7/03 (2016.01);
U.S. Cl.
CPC ...
G01R 31/40 (2013.01); H02H 7/0838 (2013.01); H02P 29/0241 (2016.02); H02P 7/04 (2016.02);
Abstract
A circuit device includes an output circuit having a high-side transistor and a low-side transistor, and a control circuit configured to detect a voltage between the drain node and the source node of a detection target transistor that is at least one of the low-side transistor and the high-side transistor, and detect a malfunction in the case where it is determined that the detection voltage did not exceed a given comparison voltage.