Motor control circuit and motor

A motor control circuit comprising:

• a first high side switch and a first low side switch each connected to one end of a drive coil of a brush-less motor;
• and
• a second high side switch and a second low side switch each connected to the other end of the drive coil, wherein
• the motor control circuit rotationally drives the brush-less motor by switching the first high side switch, the first low side switch, the second high side switch, and the second low side switch to a conduction state or a cut-off state, and
• the motor control circuit has:
• a first energization state in which the first high side switch and the second low side switch are switched to a conduction state and the second high side switch and the first low side switch are switched to a cut-off state to supply drive current in the positive direction to the drive coil;
• a second energization state in which the first high side switch and the second low side switch are switched to a cut-off state and the second high side switch and the first low side switch are switched to a conduction state to supply drive current in the negative direction to the drive coil;
• a first reflux state in which, after the first energization state, the first high side switch and the second high side switch are switched to a cut-off state and at least the second low side switch out of the first low side switch and the second low side switch is switched to a conduction state or the first low side switch and the second low side switch are switched to a cut-off state and at least the first high side switch out of the first high side switch and the second high side switch is switched to a conduction state, to apply circulation current in the positive direction to the drive coil;
• a second reflux state in which, after the second energization state, the first high side switch and the second high side switch are switched to a cut-off state and at least the first low side switch out of the first low side switch and the second low side switch is switched to a conduction state or the first low side switch and the second low side switch are switched to a cut-off state and at least the second high side switch out of the first high side switch and the second high side switch is switched to a conduction state, to apply circulation current in the negative direction to the drive coil;
• a first non-energization state in which at least three switches including switches that have been in a cut-off state in the first reflux state out of the first high side switch, the first low side switch, the second high side switch, and the second low side switch are switched to a cut-off state between the first reflux state and the second energization state after the first reflux state;
• and
• a second non-energization state in which at least three switches including switches that have been in a cut-off state in the second reflux state out of the first high side switch, the first low side switch, the second high side switch, and the second low side switch are switched to a cut-off state between the second reflux state and the first energization state after the second reflux state.