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US 2026/0163504 A1Published application
Motor controller
AssigneeGlobal Mixed-mode Technology Inc.
InventorRong-Chin Lee
Life of this patent
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Abstract
A motor controller comprises a switch circuit, a driving circuit, a pulse width modulation circuit, and a single Hall sensor. The single Hall sensor is coupled to the pulse width modulation circuit for generating a Hall signal. The Hall signal generates a first time and the motor controller records the first time. After the first time elapses, the motor controller utilizes the recorded first time to drive a first driving signal, such that the first driving signal has a first driving time and the first driving time is equal to the first time. The motor controller is configured to reduce noise and decrease the cost.
Claims26
A motor controller configured to drive a three-phase motor, wherein the three-phase motor has a first coil, a second coil, and a third coil, and the motor controller comprises:
- 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 sixth transistor, a first terminal, a second terminal, a third terminal, a fourth terminal, and a fifth terminal, the first transistor is coupled to the first terminal and the fourth terminal, the second transistor is coupled to the first terminal and the fifth terminal, the third transistor is coupled to the second terminal and the fourth terminal, the fourth transistor is coupled to the second terminal and the fifth terminal, the fifth transistor is coupled to the third terminal and the fourth terminal, the sixth transistor is coupled to the third terminal and the fifth terminal, and the first terminal provides a first driving signal for driving the three-phase motor;
- a driving circuit, configured to generate a plurality of control signals to control the switch circuit;
- a pulse width modulation circuit, configured to generate a pulse width modulation signal to the driving circuit;
- and
- a single Hall sensor, configured to generate a Hall signal to the pulse width modulation circuit, wherein the Hall signal generates a first time and the motor controller records the first time, and after the first time elapses, the motor controller utilizes the recorded first time to drive the first driving signal, such that the first driving signal has a first driving time and the first driving time is equal to the first time.
2 more elements
A motor controller configured to drive a three-phase motor,
- wherein the three-phase motor has a first coil, a second coil, and a third coil, and the motor controller comprises:
- 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 sixth transistor, a first terminal, a second terminal, a third terminal, a fourth terminal, and a fifth terminal, the first transistor is coupled to the first terminal and the fourth terminal, the second transistor is coupled to the first terminal and the fifth terminal, the third transistor is coupled to the second terminal and the fourth terminal, the fourth transistor is coupled to the second terminal and the fifth terminal, the fifth transistor is coupled to the third terminal and the fourth terminal, the sixth transistor is coupled to the third terminal and the fifth terminal, and the first terminal provides a first driving signal for driving the three-phase motor;
- a driving circuit, configured to generate a plurality of control signals to control the switch circuit;
- a pulse width modulation circuit, configured to generate a pulse width modulation signal to the driving circuit;
- and
- a single Hall sensor, configured to generate a Hall signal to the pulse width modulation circuit, wherein the Hall signal generates a first time and a second time, the motor controller records the first time and the second time, and after the second time elapses, the motor controller utilizes the recorded first time and the recorded second time to drive the first driving signal, such that the first driving signal has a first driving time and the first driving time is equal to (the first time +the second time)/2.
3 more elements
A motor controller configured to drive a three-phase motor,
- wherein the three-phase motor has a first coil, a second coil, and a third coil, and the motor controller comprises:
- 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 sixth transistor, a first terminal, a second terminal, a third terminal, a fourth terminal, and a fifth terminal, the first transistor is coupled to the first terminal and the fourth terminal, the second transistor is coupled to the first terminal and the fifth terminal, the third transistor is coupled to the second terminal and the fourth terminal, the fourth transistor is coupled to the second terminal and the fifth terminal, the fifth transistor is coupled to the third terminal and the fourth terminal, the sixth transistor is coupled to the third terminal and the fifth terminal, and the first terminal provides a first driving signal for driving the three-phase motor;
- a driving circuit, configured to generate a plurality of control signals to control the switch circuit;
- a pulse width modulation circuit, configured to generate a pulse width modulation signal to the driving circuit;
- and
- a single Hall sensor, configured to generate a Hall signal to the pulse width modulation circuit, wherein the Hall signal generates a first time and the motor controller records the first time, and after the first time elapses, the motor controller utilizes the recorded first time to drive the first driving signal, such that the first driving signal has a first driving time and the first driving time is related to the first time.
3 more elements
Dependencies are inferred from the claim text.