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. 28, 2017
Filed:
Jan. 27, 2015
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Katsumi Inoue, Shiojiri, JP;
Atsushi Yamada, Nagoya, JP;
Assignee:
SEIKO EPSON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05D 23/275 (2006.01); H02M 3/158 (2006.01); H02P 7/29 (2016.01); H02P 29/68 (2016.01); H02M 1/32 (2007.01);
U.S. Cl.
CPC ...
H02M 3/158 (2013.01); H02P 7/29 (2013.01); H02P 29/68 (2016.02); H02M 2001/327 (2013.01);
Abstract
Provided is a circuit device in which reduction of power consumption, reduction of the number of parts, and the like can be realized by eliminating the need for a sense resistor. The circuit device includes a bridge circuit, and a control circuit configured to compare a reference voltage VR and a detection voltage V(V) set using the on-current and the on-resistance of at least one of a low-side transistor and a high-side transistor, output a detection result, control switching on and off of transistors in the bridge circuit, and perform switching from a charge period to a decay period.