Invention Grant
- Patent Title: PWM control circuit and motor equipped with the same
- Patent Title (中): PWM控制电路和电机配备相同
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Application No.: US13401056Application Date: 2012-02-21
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Publication No.: US08633780B2Publication Date: 2014-01-21
- Inventor: Kesatoshi Takeuchi
- Applicant: Kesatoshi Takeuchi
- Applicant Address: JP
- Assignee: Seiko Epson Corporation
- Current Assignee: Seiko Epson Corporation
- Current Assignee Address: JP
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: JP2007-289222 20071107
- Main IPC: H03K7/08
- IPC: H03K7/08 ; H03K3/017 ; G05B11/28
Abstract:
The PWM control circuit is provided. The PWM control circuit includes: a PWM control signal generator that generates a PWM period signal defining a period of a PWM signal and a PWM resolution signal specifying a resolution in one period of the PWM period signal; and a PWM unit that generates the PWM signal based on the PWM period signal and the PWM resolution signal, wherein the PWM control signal generator changes a frequency of the PWM resolution signal while keeping a frequency of the PWM period signal unchanged.
Public/Granted literature
- US20120146562A1 PWM CONTROL CIRCUIT AND MOTOR EQUIPPED WITH THE SAME Public/Granted day:2012-06-14
Information query
