Patents Assigned to On-Bright Electronics (Shanghai) Co., Ltd.
  • Patent number: 11581815
    Abstract: System controller and method for regulating a power converter. For example, the system controller includes a first controller terminal and a second controller terminal. The system controller is configured to receive an input signal at the first controller terminal and generate a drive signal at the second controller terminal based at least in part on the input signal to turn on or off a transistor in order to affect a current associated with a secondary winding of the power converter. Additionally, the system controller is further configured to determine whether the input signal remains larger than a first threshold for a first time period that is equal to or longer than a first predetermined duration.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: February 14, 2023
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Yaming Cao, Qiang Luo, Yuan Lin, Lieyi Fang
  • Patent number: 11581819
    Abstract: System and method for transmitting and receiving. For example, the system includes a transmitter, one or more wires, and a receiver connected to the transmitter through the one or more wires. The transmitter is configured to generate a first current, and the receiver is configured to receive the first current. The receiver includes a coil, a Hall effect sensor, and a comparator, and the Hall effect sensor includes a first electrode and a second electrode. The coil is electrically isolated from the Hall effect sensor and configured to generate a magnetic field based at least in part on the first current flowing through the coil, and the Hall effect sensor is configured to sense the magnetic field and generate a first voltage at the first electrode and a second voltage at the second electrode. The comparator includes a first input terminal and a second input terminal.
    Type: Grant
    Filed: March 17, 2022
    Date of Patent: February 14, 2023
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Senlin Yang, Qiang Luo
  • Patent number: 11570859
    Abstract: System and method for controlling one or more light emitting diodes. For example, the system for controlling one or more light emitting diodes includes a current regulation circuit coupled to a cathode of one or more light emitting diodes. The one or more light emitting diodes include the cathode and an anode configured to receive a rectified voltage. Additionally, the system includes a control circuit coupled to the cathode of the one or more light emitting diodes. The control circuit is configured to receive a first voltage from the cathode of the one or more light emitting diodes, compare a second voltage and a threshold voltage, and generate a control signal based at least in part on the second voltage and the threshold voltage. The second voltage indicates a magnitude of the first voltage.
    Type: Grant
    Filed: September 17, 2020
    Date of Patent: January 31, 2023
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Liqiang Zhu, Jun Zhou
  • Patent number: 11563335
    Abstract: System and method for charging or discharging one or more batteries. For example, a battery management system for charging or discharging one or more batteries includes: a first transistor including a first transistor terminal, a second transistor terminal, and a third transistor terminal, the second transistor terminal being configured to receive a first drive signal; a second transistor including a fourth transistor terminal, a fifth transistor terminal, and a sixth transistor terminal, the fifth transistor terminal being configured to receive a second drive signal; a burst mode detector configured to receive the first drive signal and generate a burst-mode detection signal based at least in part on the first drive signal; and a drive signal generator configured to receive the burst-mode detection signal and generate the first drive signal and the second drive signal based at least in part on the burst-mode detection signal.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: January 24, 2023
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Qiang Luo, Lieyi Fang
  • Patent number: 11564299
    Abstract: System and method for controlling one or more light emitting diodes. For example, the system includes: a power supply controller configured to receive a cathode voltage from a cathode of a diode, the diode including an anode configured to receive a rectified voltage generated by a rectifying bridge, the power supply controller being further configured to generate a first signal based at least in part on the cathode voltage; and a driver configured to receive the first signal and generate a second signal based at least in part on the first signal, the driver being further configured to output the second signal to a gate terminal of a transistor, the transistor including a source terminal coupled to the driver and a first resistor, the transistor further including a drain terminal coupled to the one or more light emitting diodes and an output capacitor connected to the cathode of the diode.
    Type: Grant
    Filed: November 12, 2020
    Date of Patent: January 24, 2023
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Zhuoyan Li, Ke Li, Liqiang Zhu
  • Patent number: 11564297
    Abstract: System and method for current control. As an example, the system for current control includes: a transistor including a drain terminal, a gate terminal, and a source terminal, the drain terminal being coupled to one or more light emitting diodes; a resistor coupled to the source terminal of the transistor and configured to generate a resistor voltage related to a current flowing through the one or more emitting diodes; a voltage detector configured to receiver a first input voltage related to a second input voltage received by the one or more light emitting diodes; and a voltage controller coupled to the voltage detector, the resistor, and the gate terminal of the transistor; wherein the voltage detector is further configured to: detect the first input voltage; and generate a control signal based at least in part on the first input voltage.
    Type: Grant
    Filed: March 3, 2021
    Date of Patent: January 24, 2023
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Liqiang Zhu, Zhuoyan Li, Jiqing Yang
  • Patent number: 11552570
    Abstract: Systems and methods for voltage compensation based on load conditions in power converters. For example, a system controller for regulating a power converter includes a first controller terminal; a second controller terminal; and a compensation current generator. The compensation current generator is configured to receive an input signal through the first controller terminal. The input signal indicates a first current flowing through a primary winding of a power converter. The compensation current generator is configured to receive a demagnetization signal related to a demagnetization period of the power converter and associated with an auxiliary winding of the power converter. The compensation current generator is configured to generate a compensation current based at least in part on the input signal and the demagnetization signal. The compensation current generator is connected to a resistor. The resistor is configured to generate a compensation voltage based at least in part on the compensation current.
    Type: Grant
    Filed: October 22, 2021
    Date of Patent: January 10, 2023
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Wuping Lin, Yunchao Zhang, Jianfeng Huang, Lieyi Fang
  • Patent number: 11540371
    Abstract: System and method for controlling a bleeder current to increase a power factor of an LED lighting system without any TRIAC dimmer. For example, the system for controlling a bleeder current to increase a power factor of an LED lighting system without any TRIAC dimmer includes: a first current controller configured to receive a rectified voltage generated by a rectifier that directly receives an AC input voltage without through any TRIAC dimmer; and a second current controller configured to: control a light emitting diode current flowing through one or more light emitting diodes that receive the rectified voltage not clipped by any TRIAC dimmer; and generate a sensing voltage based at least in part upon the light emitting diode current, the sensing voltage representing the light emitting diode current in magnitude.
    Type: Grant
    Filed: April 9, 2021
    Date of Patent: December 27, 2022
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Liqiang Zhu, Qian Fang, Zhilin Fan, Ke Li
  • Patent number: 11532983
    Abstract: Controller and method for a power converter. For example, a controller for a power converter includes: a first terminal configured to receive a first terminal voltage; a second terminal configured to receive a second terminal voltage; a comparator configured to receive a first threshold voltage and the second terminal voltage and to generate a comparison signal based at least in part on the first threshold voltage and the second terminal voltage; and a switch configured to receive the first terminal voltage and the comparison signal, the switch being further configured to be closed to allow a current to flow out of the second terminal through the switch if the comparison signal is at a first logic level; wherein the comparator is further configured to: receive a first reference voltage as the first threshold voltage if the first terminal voltage is smaller than a second threshold voltage.
    Type: Grant
    Filed: October 7, 2019
    Date of Patent: December 20, 2022
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Tuofu Liu, Xiangkun Zhai, Lieyi Fang
  • Patent number: 11483907
    Abstract: System and method for regulating one or more currents. The system includes a system controller, an inductor, a first resistor, a switch and a first diode. The system controller includes a first controller terminal and a ground terminal, the system controller being configured to output a drive signal at the first controller terminal. The inductor includes a first inductor terminal and a second inductor terminal, the first inductor terminal being coupled to the ground terminal, the second inductor terminal being coupled to one or more light emitting diodes. The first resistor includes a first resistor terminal and a second resistor terminal, the first resistor terminal being coupled to the ground terminal. The switch is configured to receive the drive signal and coupled to the second resistor terminal. The first diode includes a first diode terminal and a second diode terminal and coupled to the first resistor.
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: October 25, 2022
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Jun Zhou, Yunchao Zhang, Lieyi Fang
  • Patent number: 11405992
    Abstract: System and method for controlling one or more light emitting diodes. For example, the system includes: a voltage detector configured to receive a rectified voltage associated with a TRIAC dimmer and generated by a rectifying bridge and generate a first sensing signal representing the rectified voltage; a distortion detector configured to receive the first sensing signal, determine whether the rectified voltage is distorted or not based at least in part on the first sensing signal, and generate a distortion detection signal indicating whether the rectified voltage is distorted or not; and a phase detector configured to receive the first sensing signal and generate a phase detection signal indicating a detected phase range within which the TRIAC dimmer is in a conduction state based at least in part on the first sensing signal.
    Type: Grant
    Filed: October 19, 2020
    Date of Patent: August 2, 2022
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Ke Li, Zhuoyan Li, Liqiang Zhu
  • Patent number: 11356025
    Abstract: System and method for protecting a power converter. The system includes a first comparator configured to receive a first threshold signal and a first signal and to generate a first comparison signal. The first signal is associated with an input current for a power converter. Additionally, the system includes a second comparator configured to receive a second threshold signal and the first signal and to generate a second comparison signal. The second threshold signal is different from the first threshold signal in magnitude. Moreover, the system includes a first detection component configured to receive at least the second comparison signal, detect the second comparison signal only if one or more predetermined conditions are satisfied, and generate a first detection signal based on at least information associated with the detected second comparison signal.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: June 7, 2022
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Dongze Yang, Yaming Cao, Yunchao Zhang, Lieyi Fang
  • Patent number: 11336177
    Abstract: Systems and methods are provided herein for current regulation. An example system controller includes: a first controller terminal configured to receive an input voltage, the first controller terminal being further configured to allow a first current flowing into the system controller based at least in part on the input voltage in response to one or more switches being closed; a second controller terminal configured to allow the first current to flow out of the system controller through the second controller terminal in response to the one or more switches being closed; a fourth controller terminal coupled to the third controller terminal through a first capacitor, the first capacitor not being any part of the system controller; and an error amplifier configured to generate a compensation signal based at least in part on the current sensing signal, the error amplifier including a second capacitor.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: May 17, 2022
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Meng Li, Mingli Kang, Liqiang Zhu, Lieyi Fang
  • Patent number: 11317482
    Abstract: System and method for providing at least an output current to one or more light emitting diodes. The system includes a control component configured to receive at least a demagnetization signal, a sensed signal and a reference signal and to generate a control signal based on at least information associated with the demagnetization signal, the sensed signal and the reference signal, and a logic and driving component configured to receive at least the control signal and output a drive signal to a switch based on at least information associated with the control signal. The switch is connected to a first diode terminal of a diode and a first inductor terminal of an inductor. The diode further includes a second diode terminal, and the inductor further includes a second inductor terminal.
    Type: Grant
    Filed: February 18, 2020
    Date of Patent: April 26, 2022
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Lieyi Fang, Jun Zhou
  • Patent number: 11316442
    Abstract: System and method for a power converter. For example, the system includes a first controller; a first transmitter; a first receiver; one or more first wires; one or more second wires; a second controller; a second receiver connected to the first transmitter through the one or more first wires; and a second transmitter connected to the first receiver through the one or more second wires. The first controller is configured to output a first control signal to a first switch to affect a first current flowing through a primary winding of a power converter; and generate a first input signal. The first transmitter is configured to receive the first input signal and generate the first current. The second receiver includes a first coil configured to generate a first magnetic field based at least in part on the first current flowing through the first coil.
    Type: Grant
    Filed: December 11, 2020
    Date of Patent: April 26, 2022
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Senlin Yang, Qiang Luo
  • Patent number: 11297704
    Abstract: System and method for controlling one or more light emitting diodes. For example, the system includes: a current regulator including a first regulator terminal and a second regulator terminal, the first regulator terminal being configured to receive a diode current flowing through the one or more light emitting diodes, the current regulator being configured to generate a sensing signal representing the diode current, the second regulator terminal being configured to output the sensing signal; a bleeder controller including a first controller terminal and a second controller terminal, the first controller terminal being configured to receive the sensing signal from the second regulator terminal, the bleeder controller being configured to generate a first bleeder control signal based at least in part on the sensing signal, the second controller terminal being configured to output the first bleeder control signal.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: April 5, 2022
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Liqiang Zhu, Jun Zhou
  • Patent number: 11264888
    Abstract: System and method for protecting a power converter. An example system controller for protecting a power converter includes a signal generator, a comparator, and a modulation and drive component. The signal generator is configured to generate a threshold signal. The comparator is configured to receive the threshold signal and a current sensing signal and generate a comparison signal based on at least information associated with the threshold signal and the current sensing signal, the current sensing signal indicating a magnitude of a primary current flowing through a primary winding of a power converter. The modulation and drive component is coupled to the signal generator.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: March 1, 2022
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Chao Yao, Yunchao Zhang, Yuan Lin, Zhiqiang Sun, Lieyi Fang
  • Patent number: 11252799
    Abstract: System and method for controlling one or more light emitting diodes. For example, the system includes: a phase detector configured to process information associated with a rectified voltage generated by a rectifier and related to a TRIAC dimmer, the rectified voltage corresponding to a first waveform during a first half cycle of an AC voltage and corresponding to a second waveform during a second half cycle of the AC voltage, the phase detector being further configured to generate a phase detection signal representing a first time duration during which the first waveform indicates that the rectified voltage is larger than a predetermined threshold and representing a second time duration during which the second waveform indicates that the rectified voltage is larger than the predetermined threshold; and a mode detector configured to process information associated with the rectified voltage.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: February 15, 2022
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Ke Li, Liqiang Zhu
  • Patent number: 11229099
    Abstract: System and method for controlling one or more light emitting diodes. For example, the system includes: a voltage detector configured to receive a rectified voltage associated with a TRIAC dimmer and generated by a rectifying bridge and generate a first sensing signal representing the rectified voltage; a distortion detector configured to receive the first sensing signal, determine whether the rectified voltage is distorted or not based at least in part on the first sensing signal, and generate a distortion detection signal indicating whether the rectified voltage is distorted or not; and a phase detector configured to receive the first sensing signal and generate a phase detection signal indicating a detected phase range within which the TRIAC dimmer is in a conduction state based at least in part on the first sensing signal.
    Type: Grant
    Filed: October 19, 2020
    Date of Patent: January 18, 2022
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Ke Li, Zhuoyan Li, Liqiang Zhu
  • Patent number: 11224105
    Abstract: System and method for voltage conversion to drive one or more light emitting diodes with at least a TRIAC dimmer. For example, the system includes: a phase detector configured to receive a first rectified voltage generated based at least in part on an AC input voltage processed by at least the TRIAC dimmer, the phase detector being further configured to generate a digital signal representing phase information associated with the first rectified voltage; a voltage generator configured to receive the digital signal and generate a DC voltage based at least in part on the digital signal; and a driver configured to receive the DC voltage and affect, based at least in part on the DC voltage, a current flowing through the one or more light emitting diodes; wherein the current changes with the phase information according to a predetermined function.
    Type: Grant
    Filed: February 14, 2020
    Date of Patent: January 11, 2022
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Jiqing Yang, Zhuoyan Li, Liqiang Zhu, Jun Zhou