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公开(公告)号：US20240204699A1
公开(公告)日：2024-06-20
申请号：US18084520
申请日：2022-12-19
Applicant: Global Mixed-mode Technology Inc.
Inventor： Guang-Nan Tzeng
Abstract: A motor controller comprises a switch circuit, a control circuit, and a function pin. The switch circuit is coupled to a motor for driving the motor. The control circuit generates a plurality of control signals to control the switch circuit. The function pin is coupled to the control circuit for receiving a function signal. The function signal is configured to inform the motor controller to execute a braking function. The braking function enables a braking time to be a variable value.
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公开(公告)号：US20230318509A1
公开(公告)日：2023-10-05
申请号：US17709436
申请日：2022-03-31
Applicant: Global Mixed-mode Technology Inc.
Inventor： Chien-Lun Chu
IPC: H02P27/08
CPC classification number: H02P27/085
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. When the motor controller starts a floating phase for detecting a phase switching time point, the motor controller enables that at least one transistor within the switch circuit is operated in a linear region. The motor controller is configured to reduce switching noise of the three-phase motor and increase a success rate of phase switching.
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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
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.
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公开(公告)号：US20230058267A1
公开(公告)日：2023-02-23
申请号：US17409790
申请日：2021-08-23
Applicant: Global Mixed-mode Technology Inc.
Inventor： Guang-Nan Tzeng
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 sequentially determines a first phase, a second phase, a third phase, and a fourth phase based on a rotation direction. When the motor controller is in the first phase and the motor controller is unable to detect a phase switching time point within a starting time, the motor controller switches from the first phase to the second phase, the third phase, or the fourth phase. The motor controller is configured to increase a success rate of starting the motor.
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公开(公告)号：US20220149762A1
公开(公告)日：2022-05-12
申请号：US17095682
申请日：2020-11-11
Applicant: Global Mixed-mode Technology Inc.
Inventor： Chien-Lun Chu
Abstract: A motor controller is configured to obtain a plurality of physical parameters. The motor controller comprises a selecting circuit, a Hall signal processing unit, a temperature sensor, a transistor, a control unit, and a driving circuit. The Hall signal processing unit is configured to generate a Hall signal. The temperature sensor is configured to generate a temperature signal. The control unit comprises a judging unit and the judging unit is configured to determine whether the motor controller is operated in a normal operation mode or a test mode. The judging unit is used for informing the selecting circuit to output the temperature signal or the Hall signal based on a first test enabling signal or a second test enabling signal.
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Patent Agency Ranking
公开(公告)号：US20220123679A1
公开(公告)日：2022-04-21
申请号：US17074651
申请日：2020-10-20
Applicant: Global Mixed-mode Technology Inc.
Inventor： Chien-Lun Chu
Abstract: A motor controller comprises a switch circuit, a pre-driver, a duty cycle control circuit, a current limit circuit, a pulse width modulation control unit, and a resistor. The motor controller is configured to drive a motor, where the motor has a motor coil and a maximum rated current. The switch circuit is configured to supply a motor current to the motor coil. The pre-driver generates a plurality of driving signals to control the switch circuit. The current limit circuit may store a current limit graph. The motor controller attains a function of maintaining a fixed output power by a plurality of current limit values, where each of the current limit values is less than or equal to the maximum rated current.
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公开(公告)号：US20220069746A1
公开(公告)日：2022-03-03
申请号：US17002794
申请日：2020-08-26
Applicant: Global Mixed-mode Technology Inc.
Inventor： Chien-Lun Chu
Abstract: A motor controller is configured to reduce the motor noise. The motor controller is used for driving a motor, where the motor has a motor coil and a rotor. The rotor is divided into four pole regions N1, S1, N2, and S2 to switch phases. The four pole regions have a manufacturing tolerance and the pole region N1 has a time interval T1. The motor controller comprises a switch circuit, a control unit, a phase detecting unit, and a current detecting unit. The switch circuit is configured to supply a driving current to the motor coil. Based on the manufacturing tolerance and the time interval T1, the time point to detect the driving current is set to be a proportional time PT before the phase switching, where PT/T1 is greater than the manufacturing tolerance.
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公开(公告)号：US20210297572A1
公开(公告)日：2021-09-23
申请号：US16821973
申请日：2020-03-17
Applicant: Global Mixed-mode Technology Inc.
Inventor： Wei-Yu Chen , Ching-Lung Tsai
IPC: H04N5/232 , H02P13/00 , H02P25/034
Abstract: A motor controller used for driving a motor is provided. The motor includes a motor coil and a maximum rated current. The motor controller comprises a driving circuit, a control unit, a digital-to-analog converter, an operational amplifier, a switch circuit, and a resistor. When it is needed to decrease a settling time for the motor to reach a target position, or a vibration is detected within a camera module so as to enable an image stabilization mechanism, it is capable of temporarily supplying a driving current greater than the maximum rated current to the motor coil.
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公开(公告)号：US12212267B2
公开(公告)日：2025-01-28
申请号：US18084520
申请日：2022-12-19
Applicant: Global Mixed-mode Technology Inc.
Inventor： Guang-Nan Tzeng
Abstract: A motor controller comprises a switch circuit, a control circuit, and a function pin. The switch circuit is coupled to a motor for driving the motor. The control circuit generates a plurality of control signals to control the switch circuit. The function pin is coupled to the control circuit for receiving a function signal. The function signal is configured to inform the motor controller to execute a braking function. The braking function enables a braking time to be a variable value.
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公开(公告)号：US11876478B2
公开(公告)日：2024-01-16
申请号：US17374967
申请日：2021-07-13
Applicant: Global Mixed-mode Technology Inc.
Inventor： Chi-Hong Su
CPC classification number: H02P6/188 , H02P6/08 , H02P2209/07
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 control signal to control the switch circuit. The motor controller is configured to generate a current signal and a voltage signal. When a current phase of the current signal is at a predetermined crossing phase, the motor controller calculates a difference value between the current phase of the current signal and a voltage phase of the voltage signal, where the motor controller is configured to control the difference value. The motor controller may stabilize the motor and avoid noise by modulating the difference value. The motor controller may modulate the difference value, such that the difference value is equal to a predetermined phase difference.
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