Motor driving circuit, brushless motor driving device equipped with the motor driving circuit, and motor control method

摘要

The motor drive circuit detects the position of the rotor and outputs a rotor position detection signal, and from the rotor position detection signal output by the rotor position detection unit, signals P1, P2, P3, A rotor position signal generator that generates P4, P5, and P6; and each time each of the signals P1, P2, P3, P4, P5, and P6 is input, the rotor rotation direction is recognized and the rotor position signal is corrected. A rotation direction recognition unit that replaces the position signal and a winding current output unit that outputs a current to the winding based on the corrected rotor position signal are provided.