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:
Oct. 14, 2025
Filed:
Jan. 26, 2024
Anpec Electronics Corporation, Hsinchu, TW;
Ming-Jung Tsai, Changhua County, TW;
ANPEC ELECTRONICS CORPORATION, Hsinchu, TW;
Abstract
A motor driver using a spread spectrum mechanism for reducing electromagnetic interference is provided. The motor driver generates a plurality of waveforms in each of a plurality of on-time signals, and modulates frequencies of at least some of the plurality of waveforms in each of the plurality of on-time signals to be different from each other. The motor driver drives the motor according to the modulated plurality of on-time signals. As a result, electromagnetic wave energy emitted by the motor driver of the present disclosure is changed or dispersed such that the electromagnetic wave energy is not overly concentrated at a same frequency. Therefore, the motor driver of the present disclosure is prevented from emitting the accumulated and amplified electromagnetic wave energy to cause electromagnetic interference to the operations of other circuit components.