Device and method for driving motor
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United States of America Patent
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Mar 13, 2018
Issued Date -
N/A
app pub date -
Aug 21, 2016
filing date -
Aug 21, 2015
priority date (Note) -
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Abstract
The present disclosure relates a motor driving device that includes: an H-bridge circuit that includes first and second legs, each of which has one pair of switches, and supplies a driving current to a motor; a current sensor disposed between the H-bridge circuit and a voltage source; and a controller that acquires a first sensing signal from the current sensor for a first period of time during which a turn-on signal is supplied to a first switch disposed in the first leg or a fourth switch disposed in the second leg, to acquire a second sensing signal from the current sensor for a second period of time during which a turn-on signal is supplied to a second switch disposed in the first leg or a third switch disposed in the second leg, and determines an abnormality in the H-bridge circuit.
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