Drive circuit of ultrasonic motor

The invention provides a drive circuit of an ultrasonic motor, comprising a motor drive logic module, a boost module, a level translation module and an output drive module. Rise of the peak-peak level of an output signal of the motor drive logic module is realized through combined use of the boost module and the level translation module, which is used for satisfying the drive demand of the ultrasonic motor with high driving voltage. Meanwhile, the motor drive logic module, the main boost module, the level translation module and the output module can be integrated in a chip and coordinated with a peripheral auxiliary boost circuit, thus can realize such characteristics of the drive circuit as low cost and small volume.