PWM motor drive device
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United States of America Patent
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Jan 16, 2018
Issued Date -
N/A
app pub date -
Feb 27, 2017
filing date -
Sep 12, 2014
priority date (Note) -
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Abstract
A PWM motor drive device includes: a time counter that counts a time of a polarity of a motor phase signal; a register that retains the time; a zone setting circuit that splits the time into arbitrary zones and generates an arbitrary zone set for which a phase of motor current is adjusted; and a zone correction circuit that compares a motor current phase signal indicating the phase of the motor current with the motor phase signal to correct the zone set.
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