Patents by Inventor Xiuhong Zhang
Xiuhong Zhang 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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Publication number: 20240006999Abstract: Controller and method for a power converter. For example, a controller for a power converter, the controller comprising: a first controller terminal connected to a first base of a first bipolar transistor, the first bipolar transistor further including a first collector and a first emitter; a second controller terminal connected to the first emitter of the first bipolar transistor and a second base of a second bipolar transistor, the second bipolar transistor further including a second collector and a second emitter, the second collector being connected to the first collector; a third controller terminal connected to a first resistor terminal of a resistor, the resistor further including a second resistor terminal; a fourth controller terminal connected to the second resistor terminal and also connected through a first transistor to the second emitter of the second bipolar transistor.Type: ApplicationFiled: June 26, 2023Publication date: January 4, 2024Inventors: XIUHONG ZHANG, LIEYI FANG
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Publication number: 20230369963Abstract: Controller and method for a power converter. For example, a controller for a power converter includes: a first controller terminal connected to a first base of a first bipolar transistor, the first bipolar transistor further including a first collector and a first emitter; a second controller terminal connected to the first emitter of the first bipolar transistor and a second base of a second bipolar transistor, the second bipolar transistor further including a second collector and a second emitter, the second collector being connected to the first collector; a third controller terminal connected to the second emitter of the second bipolar transistor and a resistor, the resistor being configured to generate a sensing voltage received by the third controller terminal.Type: ApplicationFiled: May 12, 2023Publication date: November 16, 2023Inventors: Xiuhong ZHANG, Lieyi FANG
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Publication number: 20230103878Abstract: The present disclosure provides a heating assembly and an atomization device. The atomization device includes an oil guiding member and a heating member. The oil guiding member has a through hole cutting through the oil guiding member. The through hole is configured to guide atomized gas generated on the oil guiding member out of the oil guiding member. The oil guiding member includes a connecting part. The connecting part is located in the through hole. The connecting part spans the through hole along a radial direction of the through hole. The heating member is embedded in one end of the oil guiding member. At least part of the heating member is located on the connecting part. The heating member is used for heating the oil guiding member, so that the liquid to be atomized is atomized on an end face of the oil guiding member close to the heating member.Type: ApplicationFiled: December 30, 2021Publication date: April 6, 2023Applicant: Shenzhen Transpring Technology Co., Ltd.Inventors: Chuhui CHEN, Xiuhong ZHANG
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Patent number: 10291131Abstract: System and method for regulating an output of a power conversion system. An example system controller includes a signal generator and a modulation and drive component. The signal generator is configured to receive at least a first signal indicating a magnitude of an input voltage received by a primary winding of a power conversion system and receive a second signal indicating a magnitude of a primary current flowing through the primary winding, and generate a third signal. The modulation and drive component is configured to receive at least the third signal, generate a drive signal based on at least information associated with the third signal, and output the drive signal to a switch to affect the primary current.Type: GrantFiled: April 13, 2016Date of Patent: May 14, 2019Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Yuan Lin, Weihua Wang, Xiuhong Zhang, Lieyi Fang
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Patent number: 10277132Abstract: 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: May 11, 2016Date of Patent: April 30, 2019Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Yunchao Zhang, Yaming Cao, Xiaomin Huang, Xiuhong Zhang, Lieyi Fang
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Patent number: 10224821Abstract: System and method for adjusting a threshold of a power conversion system. The system includes a threshold generator configured to receive a first signal and generate a threshold signal based on at least information associated with the first signal, a comparator configured to receive the threshold signal and a second signal and generate a comparison signal, and a gate driver configured to generate a drive signal based on at least information associated with the comparison signal. The gate driver is coupled to at least a switch configured to receive the drive signal and affect a current flowing through a primary winding coupled to a secondary winding. If the second signal is larger than the threshold signal in magnitude, the drive signal causes the switch to open. The drive signal is associated with a switching frequency.Type: GrantFiled: March 25, 2016Date of Patent: March 5, 2019Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Yunchao Zhang, Jinya Dong, Xiuhong Zhang, Lieyi Fang
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Patent number: 10008939Abstract: System and method for protecting a power conversion system. An example system controller includes a protection component and a driving component. The protection component is configured to receive a demagnetization signal generated based on at least information associated with a feedback signal of the power conversion system, process information associated with the demagnetization signal and a detected voltage generated based on at least information associated with the feedback signal, and generate a protection signal based on at least information associated with the detected voltage and the demagnetization signal. The driving component is configured to receive the protection signal and output a driving signal to a switch configured to affect a primary current flowing through a primary winding of the power conversion system. The detected voltage is related to an output voltage of the power conversion system. The demagnetization signal is related to a demagnetization period of the power conversion system.Type: GrantFiled: April 14, 2016Date of Patent: June 26, 2018Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Yunchao Zhang, Yuan Lin, Xiuhong Zhang, Lieyi Fang
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Patent number: 9906144Abstract: System and method for protecting a power conversion system. An example system controller includes a protection component and a driving component. The protection component is configured to receive a feedback signal, a reference signal, and a demagnetization signal generated based on at least information associated with the feedback signal, process information associated with the feedback signal, the reference signal, and the demagnetization signal, and generate a protection signal based on at least information associated with the feedback signal, the reference signal, and the demagnetization signal. The demagnetization signal is related to multiple demagnetization periods of the power conversion system, the multiple demagnetization periods including a first demagnetization period and a second demagnetization period.Type: GrantFiled: February 10, 2016Date of Patent: February 27, 2018Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Yunchao Zhang, Xiuhong Zhang, Lieyi Fang
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Patent number: 9722497Abstract: Systems and methods are provided for regulating a power conversion system. An example system controller includes a driving component and a detection component. The driving component is configured to output a driving signal to a switch associated with a first current flowing through a primary winding of a power conversion system, the switch including a first switch terminal related to a first voltage and a second switch terminal related to a second voltage, the driving signal being associated with a plurality of switching periods. The detection component is configured to receive an input signal associated with a difference between the first voltage and the second voltage, detect at least one valley of the input signal in magnitude during a detection period for the first switching period, and output a detection signal based on at least information associated with the input signal to affect the driving signal.Type: GrantFiled: August 19, 2015Date of Patent: August 1, 2017Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Lieyi Fang, Chao Yao, Xiuhong Zhang, Yunchao Zhang
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Patent number: 9584025Abstract: System and method for regulating a power converter. The system includes a first comparator configured to receive a first input signal and a second input signal and generate a first comparison signal based on at least information associated with the first input signal and the second input signal, a pulse-width-modulation generator configured to receive at least the first comparison signal and generate a modulation signal based on at least information associated with the first comparison signal, a driver component configured to receive the modulation signal and output a drive signal to a switch to adjust a primary current flowing through a primary winding of the power converter, and a voltage-change-rate detection component configured to sample the feedback signal to generate a first sampled signal for a first modulation period and to sample the feedback signal to generate a second sampled signal for a second modulation period.Type: GrantFiled: September 16, 2014Date of Patent: February 28, 2017Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Yuan Lin, Zhenglan Xia, Xiuhong Zhang, Lieyi Fang
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Publication number: 20160365792Abstract: System and method for protecting a power conversion system. An example system controller includes a protection component and a driving component. The protection component is configured to receive a demagnetization signal generated based on at least information associated with a feedback signal of the power conversion system, process information associated with the demagnetization signal and a detected voltage generated based on at least information associated with the feedback signal, and generate a protection signal based on at least information associated with the detected voltage and the demagnetization signal. The driving component is configured to receive the protection signal and output a driving signal to a switch configured to affect a primary current flowing through a primary winding of the power conversion system. The detected voltage is related to an output voltage of the power conversion system. The demagnetization signal is related to a demagnetization period of the power conversion system.Type: ApplicationFiled: April 14, 2016Publication date: December 15, 2016Inventors: Yunchao Zhang, Yuan Lin, Xiuhong Zhang, 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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Publication number: 20160329818Abstract: System and method for regulating an output of a power conversion system. An example system controller includes a signal generator and a modulation and drive component. The signal generator is configured to receive at least a first signal indicating a magnitude of an input voltage received by a primary winding of a power conversion system and receive a second signal indicating a magnitude of a primary current flowing through the primary winding, and generate a third signal. The modulation and drive component is configured to receive at least the third signal, generate a drive signal based on at least information associated with the third signal, and output the drive signal to a switch to affect the primary current.Type: ApplicationFiled: April 13, 2016Publication date: November 10, 2016Inventors: Yuan Lin, Weihua Wang, Xiuhong Zhang, Lieyi Fang
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Publication number: 20160315543Abstract: System and method for adjusting a threshold of a power conversion system. The system includes a threshold generator configured to receive a first signal and generate a threshold signal based on at least information associated with the first signal, a comparator configured to receive the threshold signal and a second signal and generate a comparison signal, and a gate driver configured to generate a drive signal based on at least information associated with the comparison signal. The gate driver is coupled to at least a switch configured to receive the drive signal and affect a current flowing through a primary winding coupled to a secondary winding. If the second signal is larger than the threshold signal in magnitude, the drive signal causes the switch to open. The drive signal is associated with a switching frequency.Type: ApplicationFiled: March 25, 2016Publication date: October 27, 2016Inventors: Yunchao Zhang, Jinya Dong, Xiuhong Zhang, Lieyi Fang
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Publication number: 20160218631Abstract: System and method for protecting a power conversion system. An example system controller includes a protection component and a driving component. The protection component is configured to receive a feedback signal, a reference signal, and a demagnetization signal generated based on at least information associated with the feedback signal, process information associated with the feedback signal, the reference signal, and the demagnetization signal, and generate a protection signal based on at least information associated with the feedback signal, the reference signal, and the demagnetization signal. The demagnetization signal is related to multiple demagnetization periods of the power conversion system, the multiple demagnetization periods including a first demagnetization period and a second demagnetization period.Type: ApplicationFiled: February 10, 2016Publication date: July 28, 2016Inventors: Yunchao Zhang, Xiuhong Zhang, 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: 9379623Abstract: System and method for adjusting a threshold of a power conversion system. The system includes a threshold generator configured to receive a first signal and generate a threshold signal based on at least information associated with the first signal, a comparator configured to receive the threshold signal and a second signal and generate a comparison signal, and a gate driver configured to generate a drive signal based on at least information associated with the comparison signal. The gate driver is coupled to at least a switch configured to receive the drive signal and affect a current flowing through a primary winding coupled to a secondary winding. If the second signal is larger than the threshold signal in magnitude, the drive signal causes the switch to open. The drive signal is associated with a switching frequency.Type: GrantFiled: March 21, 2011Date of Patent: June 28, 2016Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Yunchao Zhang, Jinya Dong, Xiuhong Zhang, Lieyi Fang
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Patent number: 9379624Abstract: System and method for regulating an output of a power conversion system. An example system controller includes a signal generator and a modulation and drive component. The signal generator is configured to receive at least a first signal indicating a magnitude of an input voltage received by a primary winding of a power conversion system and receive a second signal indicating a magnitude of a primary current flowing through the primary winding, and generate a third signal. The modulation and drive component is configured to receive at least the third signal, generate a drive signal based on at least information associated with the third signal, and output the drive signal to a switch to affect the primary current.Type: GrantFiled: December 20, 2012Date of Patent: June 28, 2016Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Yuan Lin, Weihua Wang, Xiuhong Zhang, Lieyi Fang
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Patent number: 9350252Abstract: System and method for protecting a power conversion system. An example system controller includes a protection component and a driving component. The protection component is configured to receive a demagnetization signal generated based on at least information associated with a feedback signal of the power conversion system, process information associated with the demagnetization signal and a detected voltage generated based on at least information associated with the feedback signal, and generate a protection signal based on at least information associated with the detected voltage and the demagnetization signal. The driving component is configured to receive the protection signal and output a driving signal to a switch configured to affect a primary current flowing through a primary winding of the power conversion system. The detected voltage is related to an output voltage of the power conversion system. The demagnetization signal is related to a demagnetization period of the power conversion system.Type: GrantFiled: April 5, 2013Date of Patent: May 24, 2016Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Yunchao Zhang, Yuan Lin, Xiuhong Zhang, Lieyi Fang
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Patent number: 9325234Abstract: System and method for protecting a power conversion system. An example system controller includes a protection component and a driving component. The protection component is configured to receive a feedback signal, a reference signal, and a demagnetization signal generated based on at least information associated with the feedback signal, process information associated with the feedback signal, the reference signal, and the demagnetization signal, and generate a protection signal based on at least information associated with the feedback signal, the reference signal, and the demagnetization signal. The demagnetization signal is related to multiple demagnetization periods of the power conversion system, the multiple demagnetization periods including a first demagnetization period and a second demagnetization period.Type: GrantFiled: January 9, 2014Date of Patent: April 26, 2016Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Yunchao Zhang, Xiuhong Zhang, Lieyi Fang