Patent ID: 11863097
Assignee: GLOBAL MIXED-MODE TECHNOLOGY INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A motor controller, wherein the motor controller is configured to drive a three-phase motor, and the motor controller comprising:
a switch circuit, coupled to the three-phase motor, wherein the switch circuit comprises a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a six transistor, a first terminal, a second terminal, and a third terminal, the first transistor and the second transistor are coupled to the first terminal, the third transistor and the fourth transistor are coupled to the second terminal, and the fifth transistor and the sixth transistor are coupled to the third terminal;
a driving circuit, configured to generate a plurality of control signals to control the switch circuit; and
a pulse width modulation circuit, configured to generate a pulse width modulation signal to the driving circuit, wherein the pulse width modulation signal has a duty cycle, and when the motor controller starts a floating phase for detecting a phase switching time point, the motor controller enables that the first transistor is partially turned on.