Patents by Inventor Xiaomin Huang
Xiaomin Huang 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: 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: 20170033699Abstract: Systems and methods are provided for protecting a power conversion system. A system controller includes a two-level protection component and a driving component. The two-level protection component is configured to detect an output power of a power conversion system and generate a protection signal based on at least information associated with the output power. The driving component is configured to generate a drive signal based on at least information associated with the protection signal and output the drive signal to a switch associated with a primary current flowing through a primary winding of the power conversion system. The driving component is further configured to generate the drive signal corresponding to a first switching frequency to generate the output power equal to a first power threshold and generate the drive signal corresponding to a second switching frequency to generate the output power equal to a second power threshold.Type: ApplicationFiled: July 26, 2016Publication date: February 2, 2017Inventors: Xiaomin Huang, Huawei Lv, Chao Yao, Qiang Luo, 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: 20160329821Abstract: System and method for regulating a power converter. The system includes a first signal generator configured to receive a first sensed signal and generate an output signal associated with demagnetization. The first sensed signal is related to a first winding coupled to a secondary winding for a power converter, and the secondary winding is associated with at least an output current for the power converter. Additionally, the system includes a ramping signal generator configured to receive the output signal and generate a ramping signal, and a first comparator configured to receive the ramping signal and a first threshold signal and generate a first comparison signal based on at least information associated with the ramping signal and the first threshold signal. Moreover, the system includes a second comparator configured to receive a second sensed signal and a second threshold signal and generate a second comparison signal.Type: ApplicationFiled: May 11, 2016Publication date: November 10, 2016Inventors: Yunchao Zhang, Yaming Cao, Xiaomin Huang, Xiuhong Zhang, Lieyi Fang
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Patent number: 9431891Abstract: Systems and methods are provided for protecting a power conversion system. A system controller includes a two-level protection component and a driving component. The two-level protection component is configured to detect an output power of a power conversion system and generate a protection signal based on at least information associated with the output power. The driving component is configured to generate a drive signal based on at least information associated with the protection signal and output the drive signal to a switch associated with a primary current flowing through a primary winding of the power conversion system. The driving component is further configured to generate the drive signal corresponding to a first switching frequency to generate the output power equal to a first power threshold and generate the drive signal corresponding to a second switching frequency to generate the output power equal to a second power threshold.Type: GrantFiled: July 22, 2013Date of Patent: August 30, 2016Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Xiaomin Huang, Huawei Lv, Chao Yao, 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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Patent number: 9385612Abstract: System and method for regulating a power converter. The system includes a first signal generator configured to receive a first sensed signal and generate an output signal associated with demagnetization. The first sensed signal is related to a first winding coupled to a secondary winding for a power converter, and the secondary winding is associated with at least an output current for the power converter. Additionally, the system includes a ramping signal generator configured to receive the output signal and generate a ramping signal, and a first comparator configured to receive the ramping signal and a first threshold signal and generate a first comparison signal based on at least information associated with the ramping signal and the first threshold signal. Moreover, the system includes a second comparator configured to receive a second sensed signal and a second threshold signal and generate a second comparison signal.Type: GrantFiled: June 11, 2013Date of Patent: July 5, 2016Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Yunchao Zhang, Yaming Cao, Xiaomin Huang, Xiuhong Zhang, Lieyi Fang
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Patent number: 9106142Abstract: System and method for regulating an output voltage of a power conversion system. The system includes an error amplifier coupled to a capacitor. The error amplifier is configured to receive a reference voltage, a first voltage, and an adjustment current and to generate a compensation voltage with the capacitor. The first voltage is associated with a feedback voltage. Additionally, the system includes a current generator configured to receive the compensation voltage and generate the adjustment current and a first current, and a signal generator configured to receive the first current and a second current. The signal generator is further configured to receive a sensing voltage and to generate a modulation signal. Moreover, the system includes the gate driver directly or indirectly coupled to the signal generator and configured to generate a drive signal based on at least information associated with the modulation signal.Type: GrantFiled: September 23, 2013Date of Patent: August 11, 2015Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Xiaomin Huang, 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
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Patent number: 8971062Abstract: System and method for regulating a power converter. The system includes a first signal generator configured to receive at least an input signal and generate at least a first output signal associated with demagnetization and a second output signal associated with sampling. Additionally, the system includes a sampling component configured to receive at least the input signal and the second output signal, sample the input signal based on at least information associated with the second output signal, and generate at least a third output signal associated with one or more sampled magnitudes. Moreover, the system includes an error amplifier configured to receive at least the third output signal and a first threshold voltage and generate at least a fourth output signal with a capacitor, the capacitor being coupled to the error amplifier.Type: GrantFiled: July 19, 2013Date of Patent: March 3, 2015Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Xiaomin Huang, Yaming Cao, Xiuhong Zhang, Lieyi Fang
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Publication number: 20140362621Abstract: Systems and methods are provided for protecting a power conversion system. A system controller includes a two-level protection component and a driving component. The two-level protection component is configured to detect an output power of a power conversion system and generate a protection signal based on at least information associated with the output power. The driving component is configured to generate a drive signal based on at least information associated with the protection signal and output the drive signal to a switch associated with a primary current flowing through a primary winding of the power conversion system. The driving component is further configured to generate the drive signal corresponding to a first switching frequency to generate the output power equal to a first power threshold and generate the drive signal corresponding to a second switching frequency to generate the output power equal to a second power threshold.Type: ApplicationFiled: July 22, 2013Publication date: December 11, 2014Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.Inventors: Xiaomin Huang, Huawei Lv, Chao Yao, Qiang Luo, Lieyi Fang
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Publication number: 20140204627Abstract: System and method for driving a bipolar junction transistor for a power converter. The system includes a current generator configured to output a drive current signal to a bipolar junction transistor to adjust a primary current flowing through a primary winding of a power converter. The current generator is further configured to output the drive current signal to turn on the bipolar junction transistor during a first time period, a second time period, and a third time period, the second time period separating the first time period from the third time period, drive the bipolar junction transistor to operate in a hard-saturation region during the first time period and the second time period, and drive the bipolar junction transistor to operate in a quasi-saturation region during the third time period.Type: ApplicationFiled: March 19, 2014Publication date: July 24, 2014Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.Inventors: Xiangkun Zhai, Yuan Lin, Xiaomin Huang, Lieyi Fang
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Patent number: 8723558Abstract: System and method for driving a bipolar junction transistor for a power converter. The system includes a current generator configured to output a drive current signal to a bipolar junction transistor to adjust a primary current flowing through a primary winding of a power converter. The current generator is further configured to output the drive current signal to turn on the bipolar junction transistor during a first time period, a second time period, and a third time period, the second time period separating the first time period from the third time period, drive the bipolar junction transistor to operate in a hard-saturation region during the first time period and the second time period, and drive the bipolar junction transistor to operate in a quasi-saturation region during the third time period.Type: GrantFiled: August 19, 2011Date of Patent: May 13, 2014Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Xiangkun Zhai, Yuan Lin, Xiaomin Huang, Lieyi Fang
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Publication number: 20140121602Abstract: An infusion pump comprises a housing (1); and a controller (3), a direct current motor (4), a transmission mechanism (6), a rotary encoder (5), and a liquid reservoir (7), which are located within the housing (1), wherein: a piston (71) is provided within the liquid reservoir (7); the transmission mechanism (6) has one end connected with the piston (71) and the other end connected with the direct current motor (4); the rotation shaft of the rotary encoder (5) is connected with the rotation shaft (41) of the direct current motor (4); the controller (3) is connected with the rotary encoder (5) and is provided thereon with a built-in clock and an input key (2) capable of receiving an external control signal. The infusion pump can freely adjust the infusion time and the infusion dose.Type: ApplicationFiled: August 11, 2011Publication date: May 1, 2014Applicants: SHANGHAI MICROPORT LIFESCIENCES CO., LTD., RUIJIN HOSPITAL, SHANGHAI JIAOTONG UNIVERSITY SCHOOL OF MEDICINEInventors: Guang NING, Maohe LIU, Weiqing WANG, Shouyue SUN, Jingdong ZHANG, Xiaomin HUANG
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Publication number: 20140022824Abstract: System and method for regulating an output voltage of a power conversion system. The system includes an error amplifier coupled to a capacitor. The error amplifier is configured to receive a reference voltage, a first voltage, and an adjustment current and to generate a compensation voltage with the capacitor. The first voltage is associated with a feedback voltage. Additionally, the system includes a current generator configured to receive the compensation voltage and generate the adjustment current and a first current, and a signal generator configured to receive the first current and a second current. The signal generator is further configured to receive a sensing voltage and to generate a modulation signal. Moreover, the system includes the gate driver directly or indirectly coupled to the signal generator and configured to generate a drive signal based on at least information associated with the modulation signal.Type: ApplicationFiled: September 23, 2013Publication date: January 23, 2014Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.Inventors: Xiaomin Huang, Lieyi Fang
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Publication number: 20130317436Abstract: An infusion pump comprises a housing (1); and a controller (3), a direct current motor (4), a transmission mechanism (6), a rotary encoder (5), and a liquid reservoir (7), which are located within the housing (1), wherein: a piston (71) is provided within the liquid reservoir (7); the transmission mechanism (6) has one end connected with the piston (71) and the other end connected with the direct current motor (4); the rotation shaft of the rotary encoder (5) is connected with the rotation shaft (41) of the direct current motor (4); the controller (3) is connected with the rotary encoder (5) and is provided thereon with a built-in clock and an input key (2) capable of receiving an external control signal. The infusion pump can freely adjust the infusion time and the infusion dose.Type: ApplicationFiled: August 11, 2011Publication date: November 28, 2013Applicants: RUINJIN HOSPITAL, SHANGHAI JIAOTONG UNIVERSITY SCHOOL OF MEDICINE CO., LTD., SHANGHAI MICROPORT LIFESCIENCES CO., LTD.Inventors: Guang Ning, Maohe Liu, Weiqing Wang, Shouyue Sun, Jingdong Zhang, Xiaomin Huang