Patents by Inventor Huawei Lyu
Huawei Lyu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10490998Abstract: Systems and methods are provided for protecting a power conversion system. A system controller includes a first controller terminal and a second controller terminal. The first controller terminal is configured to provide a drive signal to close and open a switch to affect a first current flowing through a primary winding of a power conversion system. The second controller terminal is configured to receive first input signals during one or more first switching periods and receive second input signals during one or more second switching periods. The system controller is configured to determine whether a temperature associated with the power conversion system is larger than a predetermined temperature threshold, and in response to the temperature associated with the power conversion system being larger than the predetermined temperature threshold, generate the drive signal to cause the switch open and remain open to protect the power conversion system.Type: GrantFiled: April 6, 2018Date of Patent: November 26, 2019Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Xiaomin Huang, Huawei Lyu, Qiang Luo, Lieyi Fang
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Patent number: 10211626Abstract: System controller and method for protecting a power converter. The system controller includes a first controller terminal configured to output a drive signal to a switch to affect a first current flowing through a primary winding of a power converter. The power converter further includes a secondary winding coupled to the primary winding, and the drive signal is associated with one or more switching periods. Additionally, the system controller includes a second controller terminal configured to receive a sensing voltage from a sensing resistor. The sensing voltage represents a magnitude of the first current flowing through the primary winding of the power converter. The system controller is configured to process information associated with the sensing voltage and a reference voltage, and determine whether an average output current of the power converter is larger than a current threshold.Type: GrantFiled: December 15, 2016Date of Patent: February 19, 2019Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Dongze Yang, Xiaomin Huang, Xiaozhi Kang, Yuan Lin, Huawei Lyu, Lieyi Fang
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Patent number: 10199946Abstract: Systems and methods are provided for regulating a power converter. An example system controller includes: a first controller terminal configured to output a drive signal to a switch to affect a current flowing through a primary winding of a power converter, the drive signal being associated with a switching period corresponding to a switching frequency; and a second controller terminal configured to receive a feedback signal associated with an output voltage related to a secondary winding of the power converter. The first controller terminal is further configured to: output the drive signal to close the switch during the on-time period; and output the drive signal to open the switch during the off-time period. The system controller is configured to set the switching frequency to one or more frequency magnitudes, each of the one or more frequency magnitudes being smaller than or equal to an upper frequency limit.Type: GrantFiled: October 3, 2017Date of Patent: February 5, 2019Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Xiaomin Huang, Yuan Lin, Huawei Lyu, Lieyi Fang
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Publication number: 20180351350Abstract: Systems and methods are provided for protecting a power conversion system. A system controller includes a first controller terminal and a second controller terminal. The first controller terminal is configured to provide a drive signal to close and open a switch to affect a first current flowing through a primary winding of a power conversion system. The second controller terminal is configured to receive first input signals during one or more first switching periods and receive second input signals during one or more second switching periods. The system controller is configured to determine whether a temperature associated with the power conversion system is larger than a predetermined temperature threshold, and in response to the temperature associated with the power conversion system being larger than the predetermined temperature threshold, generate the drive signal to cause the switch open and remain open to protect the power conversion system.Type: ApplicationFiled: April 6, 2018Publication date: December 6, 2018Inventors: Xiaomin Huang, Huawei Lyu, Qiang Luo, Lieyi Fang
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Patent number: 9972994Abstract: Systems and methods are provided for protecting a power conversion system. A system controller includes a first controller terminal and a second controller terminal. The first controller terminal is configured to provide a drive signal to close and open a switch to affect a first current flowing through a primary winding of a power conversion system. The second controller terminal is configured to receive first input signals during one or more first switching periods and receive second input signals during one or more second switching periods. The system controller is configured to determine whether a temperature associated with the power conversion system is larger than a predetermined temperature threshold, and in response to the temperature associated with the power conversion system being larger than the predetermined temperature threshold, generate the drive signal to cause the switch open and remain open to protect the power conversion system.Type: GrantFiled: June 8, 2016Date of Patent: May 15, 2018Assignee: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.Inventors: Xiaomin Huang, Huawei Lyu, Qiang Luo, Lieyi Fang
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Publication number: 20180091060Abstract: Systems and methods are provided for regulating a power converter. An example system controller includes: a first controller terminal configured to output a drive signal to a switch to affect a current flowing through a primary winding of a power converter, the drive signal being associated with a switching period corresponding to a switching frequency; and a second controller terminal configured to receive a feedback signal associated with an output voltage related to a secondary winding of the power converter. The first controller terminal is further configured to: output the drive signal to close the switch during the on-time period; and output the drive signal to open the switch during the off-time period. The system controller is configured to set the switching frequency to one or more frequency magnitudes, each of the one or more frequency magnitudes being smaller than or equal to an upper frequency limit.Type: ApplicationFiled: October 3, 2017Publication date: March 29, 2018Inventors: XIAOMIN HUANG, YUAN LIN, HUAWEI LYU, LIEYI FANG
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Patent number: 9825542Abstract: Systems and methods are provided for regulating a power converter. An example system controller includes: a first controller terminal configured to output a drive signal to a switch to affect a current flowing through a primary winding of a power converter, the drive signal being associated with a switching period corresponding to a switching frequency; and a second controller terminal configured to receive a feedback signal associated with an output voltage related to a secondary winding of the power converter. The first controller terminal is further configured to: output the drive signal to close the switch during the on-time period; and output the drive signal to open the switch during the off-time period. The system controller is configured to set the switching frequency to one or more frequency magnitudes, each of the one or more frequency magnitudes being smaller than or equal to an upper frequency limit.Type: GrantFiled: December 16, 2015Date of Patent: November 21, 2017Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Xiaomin Huang, Yuan Lin, Huawei Lyu, Lieyi Fang
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Publication number: 20170163026Abstract: System controller and method for protecting a power converter. The system controller includes a first controller terminal configured to output a drive signal to a switch to affect a first current flowing through a primary winding of a power converter. The power converter further includes a secondary winding coupled to the primary winding, and the drive signal is associated with one or more switching periods. Additionally, the system controller includes a second controller terminal configured to receive a sensing voltage from a sensing resistor. The sensing voltage represents a magnitude of the first current flowing through the primary winding of the power converter. The system controller is configured to process information associated with the sensing voltage and a reference voltage, and determine whether an average output current of the power converter is larger than a current threshold.Type: ApplicationFiled: December 15, 2016Publication date: June 8, 2017Inventors: Dongze Yang, Xiaomin Huang, Xiaozhi Kang, Yuan Lin, Huawei Lyu, Lieyi Fang
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Publication number: 20170133941Abstract: Systems and methods are provided for regulating a power converter. An example system controller includes: a first controller terminal configured to output a drive signal to a switch to affect a current flowing through a primary winding of a power converter, the drive signal being associated with a switching period corresponding to a switching frequency; and a second controller terminal configured to receive a feedback signal associated with an output voltage related to a secondary winding of the power converter. The first controller terminal is further configured to: output the drive signal to close the switch during the on-time period; and output the drive signal to open the switch during the off-time period. The system controller is configured to set the switching frequency to one or more frequency magnitudes, each of the one or more frequency magnitudes being smaller than or equal to an upper frequency limit.Type: ApplicationFiled: December 16, 2015Publication date: May 11, 2017Inventors: Xiaomin Huang, Yuan Lin, Huawei Lyu, Lieyi Fang
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Patent number: 9577536Abstract: System controller and method for protecting a power converter. The system controller includes a first controller terminal configured to output a drive signal to a switch to affect a first current flowing through a primary winding of a power converter. The power converter further includes a secondary winding coupled to the primary winding, and the drive signal is associated with one or more switching periods. Additionally, the system controller includes a second controller terminal configured to receive a sensing voltage from a sensing resistor. The sensing voltage represents a magnitude of the first current flowing through the primary winding of the power converter. The system controller is configured to process information associated with the sensing voltage and a reference voltage, and determine whether an average output current of the power converter is larger than a current threshold.Type: GrantFiled: March 5, 2015Date of Patent: February 21, 2017Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Dongze Yang, Xiaomin Huang, Xiaozhi Kang, Yuan Lin, Huawei Lyu, Lieyi Fang
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Publication number: 20160344180Abstract: Systems and methods are provided for protecting a power conversion system. A system controller includes a first controller terminal and a second controller terminal. The first controller terminal is configured to provide a drive signal to close and open a switch to affect a first current flowing through a primary winding of a power conversion system. The second controller terminal is configured to receive first input signals during one or more first switching periods and receive second input signals during one or more second switching periods. The system controller is configured to determine whether a temperature associated with the power conversion system is larger than a predetermined temperature threshold, and in response to the temperature associated with the power conversion system being larger than the predetermined temperature threshold, generate the drive signal to cause the switch open and remain open to protect the power conversion system.Type: ApplicationFiled: June 8, 2016Publication date: November 24, 2016Inventors: Xiaomin Huang, Huawei Lyu, Qiang Luo, Lieyi Fang
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Publication number: 20160226239Abstract: System controller and method for protecting a power converter. The system controller includes a first controller terminal configured to output a drive signal to a switch to affect a first current flowing through a primary winding of a power converter. The power converter further includes a secondary winding coupled to the primary winding, and the drive signal is associated with one or more switching periods. Additionally, the system controller includes a second controller terminal configured to receive a sensing voltage from a sensing resistor. The sensing voltage represents a magnitude of the first current flowing through the primary winding of the power converter. The system controller is configured to process information associated with the sensing voltage and a reference voltage, and determine whether an average output current of the power converter is larger than a current threshold.Type: ApplicationFiled: March 5, 2015Publication date: August 4, 2016Inventors: Dongze Yang, Xiaomin Huang, Xiaozhi Kang, Yuan Lin, Huawei Lyu, Lieyi Fang
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Patent number: 9397550Abstract: Systems and methods are provided for protecting a power conversion system. A system controller includes a first controller terminal and a second controller terminal. The first controller terminal is configured to provide a drive signal to close and open a switch to affect a first current flowing through a primary winding of a power conversion system. The second controller terminal is configured to receive first input signals during one or more first switching periods and receive second input signals during one or more second switching periods. The system controller is configured to determine whether a temperature associated with the power conversion system is larger than a predetermined temperature threshold, and in response to the temperature associated with the power conversion system being larger than the predetermined temperature threshold, generate the drive signal to cause the switch open and remain open to protect the power conversion system.Type: GrantFiled: November 8, 2013Date of Patent: July 19, 2016Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Xiaomin Huang, Huawei Lyu, Qiang Luo, Lieyi Fang
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Publication number: 20150085540Abstract: Systems and methods are provided for protecting a power conversion system. A system controller includes a first controller terminal and a second controller terminal. The first controller terminal is configured to provide a drive signal to close and open a switch to affect a first current flowing through a primary winding of a power conversion system. The second controller terminal is configured to receive first input signals during one or more first switching periods and receive second input signals during one or more second switching periods. The system controller is configured to determine whether a temperature associated with the power conversion system is larger than a predetermined temperature threshold, and in response to the temperature associated with the power conversion system being larger than the predetermined temperature threshold, generate the drive signal to cause the switch open and remain open to protect the power conversion system.Type: ApplicationFiled: November 8, 2013Publication date: March 26, 2015Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.Inventors: Xiaomin Huang, Huawei Lyu, Qiang Luo, Lieyi Fang