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:
Sep. 01, 2026
Filed:
Aug. 16, 2024
Nuvoton Technology Corporation Japan, Kyoto, JP;
Daisuke Fukuda, Kyoto, JP;
Takuya Ishii, Osaka, JP;
Shinichi Kuroshima, Kyoto, JP;
Noriaki Emura, Osaka, JP;
Nuvoton Technology Corporation Japan, Kyoto, JP;
Abstract
A motor driver includes: a current detector that outputs a current signal corresponding to a motor current; a current comparison circuit that compares the current signal with a reference waveform signal; and a PWM circuit that outputs a first drive signal and a second drive signal. The first drive signal includes a first pulse that starts synchronously with a start of a reference pulse signal and ends after the pulse duration time has elapsed from a beginning of the reference pulse signal and when an absolute value of the current signal exceeds an absolute value of the reference waveform signal, and the second drive signal includes a second pulse that starts after the first pulse ends when the absolute value of the current signal exceeds the absolute value of the reference waveform signal within the pulse duration time.