公开(公告)号：US11699965B2

公开(公告)日：2023-07-11

申请号：US17075641

申请日：2020-10-20

Applicant: Global Mixed-mode Technology Inc.

Inventor： Chia-Tai Yang

IPC: H02P7/29 ,  F04D27/00 ,  F04D25/06 ,  H02P7/03

CPC classification number: H02P7/29 ,  F04D25/06 ,  F04D27/00 ,  H02P7/05

Abstract: A fan motor controller comprises a pulse width modulation signal, a switch circuit, a control unit, and a frequency judging unit. The switch circuit is coupled to a fan motor for supplying a driving current to the fan motor. The control unit generates a control signal to the switch circuit, so as to control the switch circuit. The frequency judging unit receives the pulse width modulation signal for generating a judging signal to the control unit. The pulse width modulation signal is configured to adjust a speed of a fan. The pulse width modulation signal has a frequency. Based on the frequency and a judgment rule, the fan motor controller is configured to attain the function of switching between the forward direction and the reverse direction of the fan.

公开(公告)号：US20220209693A1

公开(公告)日：2022-06-30

申请号：US17135937

申请日：2020-12-28

Applicant: Global Mixed-mode Technology Inc.

Inventor： Chia-Tai Yang

IPC: H02P6/18 ,  H02P21/16

Abstract: A motor unit comprises a switch circuit and a control unit. The switch circuit comprises a first terminal and a second terminal, where the switch circuit is coupled to a motor for driving the motor. The first terminal has a first voltage signal. The control unit generates a plurality of control signals to control the switch circuit. When the first terminal is in a floating state, the motor unit utilizes left-right asymmetry of the first voltage signal to judge whether the motor is in a forward rotation state or not. The motor unit further comprises the motor, where the motor comprises a rotor, a silicon steel plate, and a coil. The silicon steel plate has an asymmetrical structure.

公开(公告)号：US20220166359A1

公开(公告)日：2022-05-26

申请号：US17103985

申请日：2020-11-25

Applicant: Global Mixed-mode Technology Inc.

Inventor： Chia-Tai Yang

IPC: H02P27/04

Abstract: A motor controller comprises a switch circuit, a driving circuit, and a pulse width modulation circuit. The switch circuit is coupled to a three-phase motor for driving the three-phase motor. The driving circuit generates a plurality of control signals to control the switch circuit. The pulse width modulation circuit receives a first pulse width modulation signal for generating a second pulse width modulation signal to the driving circuit, where the first pulse width modulation signal has a first duty cycle, and the second pulse width modulation signal has a second duty cycle. When the motor controller starts a floating phase to detect a back electromotive force of the floating phase, the motor controller enables the second duty cycle to be greater than or equal to a minimum value.

公开(公告)号：US20230080383A1

公开(公告)日：2023-03-16

申请号：US17476498

申请日：2021-09-16

Applicant: Global Mixed-mode Technology Inc.

Inventor： Chia-Tai Yang

IPC: H02P7/29

Abstract: A motor controller comprises a switch circuit and a control unit. The switch circuit is coupled to a motor for driving the motor. The control unit is configured to generate a plurality of control signals to control the switch circuit. The motor controller utilizes a duty cycle conversion mechanism, such that the motor controller is operated in a constant voltage driving mode or a constant current driving mode. The motor controller is configured to avoid generating switching noise by the constant voltage driving mode or the constant current driving mode. The motor controller is configured to increase a success rate of starting the motor.

公开(公告)号：US11563397B2

公开(公告)日：2023-01-24

申请号：US17225121

申请日：2021-04-08

Applicant: Global Mixed-mode Technology Inc.

Inventor： Chia-Tai Yang

IPC: H02P23/00 ,  H02P25/00 ,  H02P27/00 ,  H02P27/08 ,  H02P6/182

Abstract: A motor controller comprises a switch circuit and a driving circuit. The switch circuit is coupled to a three-phase motor for driving the three-phase motor. The driving circuit generates a plurality of control signals to control the switch circuit. The motor controller utilizes a first pulse width modulation waveform and a second pulse width modulation waveform for driving the three-phase motor, where the first pulse width modulation waveform and the second pulse width modulation waveform have different frequencies from each other. The motor controller utilizes the second pulse width modulation waveform to detect a phase switching time point, where the frequency of the first pulse width modulation waveform is greater than the frequency of the second pulse width modulation waveform.

公开(公告)号：US11936326B2

公开(公告)日：2024-03-19

申请号：US17394418

申请日：2021-08-05

Applicant: Global Mixed-mode Technology Inc.

Inventor： Chia-Tai Yang

IPC: H02P7/29 ,  H03K4/08

CPC classification number: H02P7/29 ,  H03K4/08

Abstract: A motor controller comprises a switch circuit, a control unit, and a duty cycle processing unit. The switch circuit is coupled to a motor for driving the motor. The control unit is configured to generate a plurality of control signals to control the switch circuit. The duty cycle processing unit receives a first pulse width modulation signal, where the first pulse width modulation has a first duty cycle. The duty cycle processing unit is configured to judge if the first duty cycle is equal to 0% or 100%. The duty cycle processing unit comprises a duty cycle computing unit, where the duty cycle computing unit is configured to capture the first duty cycle.

公开(公告)号：US20220149704A1

公开(公告)日：2022-05-12

申请号：US17092327

申请日：2020-11-09

Applicant: Global Mixed-mode Technology Inc.

Inventor： Chia-Tai Yang

IPC: H02K11/215 ,  H02P6/16 ,  H02P27/08

Abstract: A motor controller comprises a switch circuit, a driving circuit, a pulse width modulation circuit, and a Hall sensor. The switch circuit is coupled to a three-phase motor for driving the three-phase motor. The driving circuit generates a plurality of control signals to control the switch circuit. The pulse width modulation circuit generates a pulse width modulation signal to the driving circuit. The pulse width modulation signal has a duty cycle. The Hall sensor is coupled to the pulse width modulation circuit for generating a Hall signal. When the duty cycle is less than an alignment duty cycle, the motor controller generates an alignment waveform based on the initial value of the Hall signal. The alignment waveform may be a part of an M-shaped waveform.

公开(公告)号：US20220123672A1

公开(公告)日：2022-04-21

申请号：US17075641

申请日：2020-10-20

Applicant: Global Mixed-mode Technology Inc.

Inventor： Chia-Tai Yang

IPC: H02P7/29 ,  F04D27/00 ,  F04D25/06 ,  H02P7/03

Abstract: A fan motor controller comprises a pulse width modulation signal, a switch circuit, a control unit, and a frequency judging unit. The switch circuit is coupled to a fan motor for supplying a driving current to the fan motor. The control unit generates a control signal to the switch circuit, so as to control the switch circuit. The frequency judging unit receives the pulse width modulation signal for generating a judging signal to the control unit. The pulse width modulation signal is configured to adjust a speed of a fan. The pulse width modulation signal has a frequency. Based on the frequency and a judgment rule, the fan motor controller is configured to attain the function of switching between the forward direction and the reverse direction of the fan.

公开(公告)号：US11791696B2

公开(公告)日：2023-10-17

申请号：US17092327

申请日：2020-11-09

Applicant: Global Mixed-mode Technology Inc.

Inventor： Chia-Tai Yang

IPC: H02K11/21 ,  H02K11/215 ,  H02P27/08 ,  H02P6/16

CPC classification number: H02K11/215 ,  H02P6/16 ,  H02P27/085

Abstract: A motor controller comprises a switch circuit, a driving circuit, a pulse width modulation circuit, and a Hall sensor. The switch circuit is coupled to a three-phase motor for driving the three-phase motor. The driving circuit generates a plurality of control signals to control the switch circuit. The pulse width modulation circuit generates a pulse width modulation signal to the driving circuit. The pulse width modulation signal has a duty cycle. The Hall sensor is coupled to the pulse width modulation circuit for generating a Hall signal. When the duty cycle is less than an alignment duty cycle, the motor controller generates an alignment waveform based on the initial value of the Hall signal. The alignment waveform may be a part of an M-shaped waveform.

公开(公告)号：US20230040880A1

公开(公告)日：2023-02-09

申请号：US17394418

申请日：2021-08-05

Applicant: Global Mixed-mode Technology Inc.

Inventor： Chia-Tai Yang

IPC: H02P7/29

Abstract: A motor controller comprises a switch circuit, a control unit, and a duty cycle processing unit. The switch circuit is coupled to a motor for driving the motor. The control unit is configured to generate a plurality of control signals to control the switch circuit. The duty cycle processing unit receives a first pulse width modulation signal, where the first pulse width modulation has a first duty cycle. The duty cycle processing unit is configured to judge if the first duty cycle is equal to 0% or 100%. The duty cycle processing unit comprises a duty cycle computing unit, where the duty cycle computing unit is configured to capture the first duty cycle.