Motor driving control device

A motor driving device comprising:

• an AC/DC converter that converts alternating current power, which is supplied from an alternating current power supply, into direct current power;
• a motor driving unit that operates based on the direct current power supplied from the AC/DC converter and outputs a driving signal to a motor;
• and
• a start-up auxiliary circuit that is arranged on a path connecting the AC/DC converter and the motor driving unit,
• wherein the start-up auxiliary circuit:
• delays an output of the driving signal from the motor driving unit for a first predetermined time period after the supply of the alternating current power from the alternating current power supply to the AC/DC converter starts;
• and
• gradually increases a driving voltage of the motor driving unit so that current flowing in a driving coil of the motor is limited to a predetermined value or smaller for a second predetermined time period after the output of the driving signal from the motor driving unit starts.