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:
Aug. 08, 2023
Filed:
Aug. 12, 2020
Applicant:
Global Mixed-mode Technology Inc., Hsin-Chu, TW;
Inventor:
Rong-Chin Lee, Pingtung County, TW;
Assignee:
Global Mixed-mode Technology Inc., Hsin-Chu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 9/04 (2006.01); G01R 19/165 (2006.01); H03K 17/0812 (2006.01); H03K 17/76 (2006.01); H03K 17/687 (2006.01); H03K 5/24 (2006.01);
U.S. Cl.
CPC ...
H02H 9/042 (2013.01); G01R 19/16528 (2013.01); H02H 9/044 (2013.01); H03K 5/24 (2013.01); H03K 17/08122 (2013.01); H03K 17/6871 (2013.01); H03K 17/76 (2013.01);
Abstract
An overvoltage protection circuit which can be applied to a motor controller is provided. The overvoltage protection circuit is coupled to an input terminal for receiving an input voltage. The overvoltage protection circuit comprises a switch circuit, a controller, and a comparing unit. When the input voltage is greater than a first voltage, a discharging mechanism is forced to start so as to suppress a voltage spike. When the input voltage is less than a second voltage, the discharging mechanism is closed so as to operate normally.