Motor driving device
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United States of America Patent
Stats
-
Oct 25, 2016
Grant Date -
Feb 26, 2015
app pub date -
Aug 11, 2014
filing date -
Aug 23, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A motor driving device includes an analog to digital conversion circuit to which a speed command voltage instructing a rotation speed of a motor is inputted, and a microcomputer configured and programmed to generate a speed command having a pulse width which is changed according to the speed command voltage based on an output signal of the analog to digital conversion circuit. Further, the motor driving device includes a signal isolator configured to transmit the speed command between an input and an output while providing isolation between the input and the output, and a drive circuit configured to generate a driving signal in response to the speed command outputted from the signal isolator and to change the rotation speed of the motor.
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