Patent ID: 8237396
Filing Date: 2012-08-07
Classification: H02P

Abstract:
1. A motor driving device, comprising: a first power supply terminal; a second power supply terminal; a drive unit that is coupled to the first power supply terminal, to the second power supply terminal, and to a motor winding, the drive unit comprising: a control unit that controls the drive unit; and a resistive element coupled between the drive unit and the first power supply terminal, the resistive element comprising: wherein, when a voltage between the first power supply terminal and the second power supply terminal exceeds a predetermined value, the control unit makes the motor winding and the resistive element form a loop circuit, wherein outputs of the first and second inverters are coupled to the motor winding, wherein, when the voltage between the first power supply terminal and the second power supply terminal exceeds the predetermined value, the control unit makes the outputs of the first and second inverters, the motor winding, and the resistive element form a loop circuit, and wherein, when the voltage between the first power supply terminal and the second power supply terminal exceeds a predetermined value, the first transistor and the third transistor are turned on, and the second transistor and the fourth transistor are turned off, thereby the first transistor, the third transistor, and the first resistive element form a loop circuit.