Motor Driving Circuit and Method
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United States of America Patent
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Issued Date -
Jan 30, 2014
app pub date -
Aug 28, 2012
filing date -
Jul 24, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A motor driving circuit for driving a direct-current (DC) motor, includes a driving circuit for converting an input voltage into a first and a second output voltages, a Hall sensor for generating a first and a second time sequential control signals according to a working condition of the DC motor, a current sensing unit for detecting a motor current through the DC motor and comparing the motor current to a reference current to generate a comparison result and determine a first transition voltage selector value accordingly, and a control unit coupled to the driving circuit, the current sensing unit and the Hall sensor for controlling a working status of the driving circuit according to the first and the second time sequential control signals and the first transition voltage selector value.
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