Invention Grant
US09099949B2 Back electromotive force detection circuit and motor driving control apparatus using the same 有权
反电动势检测电路和使用其的电机驱动控制装置

Back electromotive force detection circuit and motor driving control apparatus using the same
Abstract:
There are provided a back electromotive force detection circuit and a motor driving control apparatus using the same. The back electromotive force detection circuit includes a duty determining unit and a delay compensation unit. The duty determining unit outputs a differential level according to a duty of a driving control signal of a motor. The delay compensation unit performs delay compensation differently on each differential level to compensate for a delay in back electromotive force of the motor regardless of a variation in a duty of the driving control signal.
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