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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.:

US 12763707 B1

PDFFull Text
Date of Patent:
Oct. 13, 2026

Filed:

Sep. 07, 2024

Multiphase motor driving circuit and multiphase motor driving method

Applicant:

Richtek Technology Corporation, Zhubei City, TW;

Inventors:

I-Chi Lin, New Taipei, TW;

Hao-Che MA, New Taipei, TW;

Yuan-Hsun Chang, Taipei, TW;

Jong-Ruey Yang, Taipei, TW;

Chang-Yi Lin, Hsinchu, TW;

Assignee:

RICHTEK TECHNOLOGY CORPORATION, Hsinchu, TW;

Attorneys:

WPAT, P.C.

Anthony King

Primary Examiner:

Gabriel Agared

Int. Cl.
CPC ...
H02P 27/06 (2006.01); H02P 3/02 (2006.01); H02P 3/10 (2006.01); H02P 7/291 (2016.01);
U.S. Cl.
CPC ...
H02P 3/10 (2013.01); H02P 3/02 (2013.01); H02P 7/291 (2016.02);
Abstract

A multiphase motor driving circuit includes: a power stage circuit; and a control circuit. In a motor braking mode, when a holding voltage is less than the first voltage threshold, a first sub-mode is entered, in which the control circuit controls at least a portion of switches in the power stage circuit with a pulse width modulation (PWM) signal to switch periodically, thereby converting a back electromotive force (EMF) of a multiphase motor into the holding voltage to supply power to the control circuit. In the motor braking mode, when the holding voltage is greater than the second voltage threshold, a second sub-mode is entered, in which the control circuit controls at least a portion of switches in the power stage circuit with the PWM signal to keep them continuously conductive, thereby consuming the back EMF of the multiphase motor to reduce a speed of the multiphase motor.

Find Patent Forward Citations

Lin, I-Chi. (2026). Multiphase motor driving circuit and multiphase motor driving method (U.S. Patent No. 12763707). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12763707

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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