Soft-start and soft-lock start on motor driving apparatus
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United States of America Patent
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Aug 5, 2014
Grant Date -
Mar 21, 2013
app pub date -
Dec 28, 2011
filing date -
Sep 21, 2011
priority date (Note) -
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Abstract
A motor driving apparatus is disclosed herein and includes a control unit, a soft-start unit and an output unit. When power-up or lock release situation, an external PWM driving signal is inputted to the soft-start unit, the soft-start unit generates an internal PWM driving signal and a power-up initial signal; after the power-up initial signal is generated, the control unit transmitting a motor rotation signal to the soft-start unit; when the soft-start unit counts a plurality of the motor rotation signal, the soft-start unit selects the external PWM driving signal or the internal PWM driving signal to output to the output unit.
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