DRIVING CIRCUIT FOR CONTROLLING MOTOR

摘要

PURPOSE: A driving circuit for controlling a motor is provided to control the rotation of the motor by using a duty ratio of a digital signal without a D/A converter. CONSTITUTION: A digital signal processor(100) is used for converting an external analog signal to a digital signal and generating a digital control signal for driving a motor(300). A motor control driving portion(200) drives the motor(300) according to a duty ratio of the digital control signal of the digital signal processor(100). A capacitor(C1) is connected to an input terminal of the motor control driving portion(200) in order to charge or discharge the charges generated from the motor control driving portion(200). The digital signal processor(100) includes a pulse width modulator(110). The motor control driving portion(200) includes a pulse width modulation decoder(210) and a power amplifier(220).