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:
Jun. 25, 2024
Filed:
Feb. 18, 2021
Global Mixed-mode Technology Inc., Hsin-Chu, TW;
Guang-Nan Tzeng, Hsinchu, TW;
Global Mixed-mode Technology Inc., Hsin-Chu, TW;
Abstract
A motor controller is used for driving a motor, where the motor has a motor coil. The motor controller comprises a switch circuit, a control unit, and a phase detecting unit. The switch circuit is configured to supply a coil current to the motor coil. The control unit generates a plurality of control signals to control the switch circuit. The phase detecting unit generates a phase signal to the control unit. When the phase signal is changed from a first level to a second level, the motor controller starts a phase delay mechanism to reduce the risk of reverse flow of the coil current. The phase delay mechanism lasts a time. The motor controller may utilize the phase delay mechanism in a start mode or a normal operation mode.