Back electromotive force detection circuit and motor driving control apparatus using the same
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsHyun PAEK, Joo Yul KO
Life of this patent
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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.
Claims15
A back electromotive force detection circuit comprising:
- a duty determining unit outputting a differential level according to a duty of a driving control signal of a motor;
- and
- a delay compensation unit performing 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.
A motor driving control apparatus comprising:
- a driving signal generation unit providing a driving control signal to a motor;
- a back electromotive force detection unit detecting back electromotive force of the motor and compensating for a delay in the back electromotive force;
- and
- a controller determining a phase commutation timing of the motor by using the back electromotive force, and controlling the driving signal generation unit to generate the driving control signal by using the determined phase commutation timing.
Dependencies are inferred from the claim text.