Motor driven integrated circuit, motor device, and application apparatus
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United States of America Patent
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Jul 2, 2019
Grant Date -
May 10, 2018
app pub date -
Nov 3, 2017
filing date -
Nov 4, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A motor-driven integrated circuit comprises a plurality of position comparators, a timer and a central processing. Each of the plurality of position comparators receives a pole detection signal denoted a position of a rotor of a motor. The timer receives a timing interrupt signal output by the plurality of position comparators when a predetermined edge of the pole detection signal is generated and records a time of the predetermined edge. The central processing unit obtains a rotation speed of the motor according to a time difference between two predetermined edges.
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