Patent ID: 8531142
Filing Date: 2013-09-10
Classification: H02P

Abstract:
1. A bi-power motor controlling apparatus, which is electrically connected with a motor and receives a first power and a second power from outside, the apparatus comprising: a driver IC having a first pin and a second pin for receiving the first power and the second power, respectively, and the driver IC does not receive the pulse-width modulation signal, wherein the second power is supplied to the driver IC, the first power is supplied to the motor, and a rotational speed of the motor is controlled by adjusting the first power, wherein the driver IC comprises: a control circuit electrically connected with a sensor and receiving the second power and a phase-commutation sensing signal generated by the sensor, wherein the control circuit generates a driving signal according to the phase-commutation sensing signal; and a driving circuit electrically connected with the control circuit, receiving the first power and the driving signal, and driving the motor to rotate according to the first power and the driving signal, wherein the driving circuit is a full-bridge circuit, the first power is a triangle-wave power, and by adjusting the first power, a phase commutation of a coil of the motor occur on a point, which is in the lower power period of the first power.