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:
Dec. 12, 2023
Filed:
Oct. 27, 2021
Applicant:
Richtek Technology Corporation, Zhubei, TW;
Inventor:
Wei-Hsu Chang, New Taipei, TW;
Assignee:
RICHTEK TECHNOLOGY CORPORATIION, Zhubei, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 6/12 (2006.01); H02P 6/08 (2016.01);
U.S. Cl.
CPC ...
H02P 6/12 (2013.01); H02P 6/08 (2013.01);
Abstract
A brushless DC electric (BLDC) motor driver circuit includes: a power stage circuit configured to operably drive a brushless DC electric (BLDC) motor according to a pulse width modulation (PWM) signal; and an abnormality diagnosis circuit, wherein when a first parameter is under control, the abnormality diagnosis circuit is configured to operably determine a rotation abnormality condition of the BLDC motor according to a second parameter; wherein the first parameter and the second parameter are correlated with the rotation of the BLDC motor.