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. 27, 2021
Filed:
Sep. 26, 2019
Applicant:
Rohm Co., Ltd., Kyoto, JP;
Inventors:
Tetsuo Yamato, Kyoto, JP;
Noboru Takizawa, Kyoto, JP;
Assignee:
Rohm Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 1/00 (2006.01); H03K 17/16 (2006.01); H02P 7/03 (2016.01);
U.S. Cl.
CPC ...
H03K 17/162 (2013.01); H02P 7/04 (2016.02);
Abstract
The present disclosure relates to a driver device, which can drive a load in high temperatures. In a driver IC which drives a motor by switch-driving four output transistors, a gate driving circuit is configured to render a slew rate of a gate voltage of each output transistor to be adjustable at multiple steps while the output transistor is switching. Although a predetermined rate is set to be the slew rate of the gate voltage in a normal state, the slew rate is increased at high temperatures.