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公开(公告)号：US10790751B2
公开(公告)日：2020-09-29
申请号：US16432752
申请日：2019-06-05
Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.
Inventor： Yunchao Zhang , Lieyi Fang
IPC: H02M3/335
Abstract: System and method for regulating a power conversion system. An example system controller includes a signal processing component and a driving component. The signal processing component is configured to receive a feedback signal associated with an output signal of a power conversion system and generate a processed signal based on at least information associated with the feedback signal. The driving component is configured to generate a drive signal based on at least information associated with the processed signal and output the drive signal to a switch in order to affect a primary current flowing through a primary winding, the drive signal being associated with a demagnetization period corresponding to a demagnetization process of the power conversion system. The signal processing component is further configured to, sample and hold the feedback signal a plurality of times during the demagnetization period to generate a plurality of sampled and held signals.
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公开(公告)号：US20200305247A1
公开(公告)日：2020-09-24
申请号：US16804918
申请日：2020-02-28
Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.
Inventor： ZHUOYAN LI , LIQIANG ZHU , XUEYOU LING , JUN ZHOU , LIEYI FANG
Abstract: System controller and method for a lighting system according to certain embodiments. For example, the system controller includes a first controller terminal configured to receive a first signal, and a second controller terminal coupled to a first transistor terminal of a transistor. The transistor further includes a second transistor terminal and a third transistor terminal. The second transistor terminal is coupled to a first winding terminal of a winding, and the winding further includes a second winding terminal coupled to a capacitor. Additionally, the system controller includes a third controller terminal coupled to the third transistor terminal of the transistor, and a fourth controller terminal coupled to a resistor and configured to receive a second signal. The second signal represents a magnitude of a current flowing through at least the winding, the third controller terminal, the fourth controller terminal, and the resistor.
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43.发明授权公开(公告)号：US10756634B2
公开(公告)日：2020-08-25
申请号：US16256232
申请日：2019-01-24
Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.
Inventor： Lieyi Fang
Abstract: System and method are provided for protecting a power converter. The system includes a first comparator, and an off-time component. The first comparator is configured to receive a sensing signal and a first threshold signal and generate a first comparison signal based on at least information associated with the sensing signal and the first threshold signal, the power converter being associated with a switching frequency and further including a switch configured to affect the primary current. The off-time component is configured to receive the first comparison signal and generate an off-time signal based on at least information associated with the first comparison signal. The off-time component is further configured to, if the first comparison signal indicates the sensing signal to be larger than the first threshold signal in magnitude, generate the off-time signal to keep the switch to be turned off for at least a predetermined period of time.
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44.发明授权公开(公告)号：US10742114B2
公开(公告)日：2020-08-11
申请号：US15083117
申请日：2016-03-28
Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.
Inventor： Yuan Lin , Lieyi Fang
Abstract: System and method are provided for regulating a power converter. The system includes a signal processing component configured to receive a first input signal and a second input signal, process information associated with the first input signal and the second input signal, and output a drive signal to a switch based on at least information associated with the first input signal and the second input signal. The first input signal is associated with at least a feedback signal related to an output voltage of the power converter. The second input signal is associated with at least a primary current flowing through a primary winding of the power converter. The signal processing component is further configured to change a peak value of the primary current within a first predetermined range, and change the switching frequency of the power converter within a second predetermined range.
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公开(公告)号：US10686373B2
公开(公告)日：2020-06-16
申请号：US15815468
申请日：2017-11-16
Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.
Inventor： Qian Fang , Cong Lan , Lieyi Fang
Abstract: Systems and methods are provided for regulating a power converter. An example system controller includes: a driver configured to output a drive signal to a switch to affect a current flowing through an inductive winding of a power converter, the drive signal being associated with a switching period including an on-time period and an off-time period. The switch is closed in response to the drive signal during the on-time period. The switch is opened in response to the drive signal during the off-time period. A duty cycle is equal to a duration of the on-time period divided by a duration of the switching period. One minus the duty cycle is equal to a parameter. The system controller is configured to keep a multiplication product of the duty cycle, the parameter and the duration of the on-time period approximately constant.
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Patent Agency Ranking
公开(公告)号：US10651747B2
公开(公告)日：2020-05-12
申请号：US16117698
申请日：2018-08-30
Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.
Inventor： Yaming Cao , Qiang Luo , Lieyi Fang
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, at the first controller terminal, an input signal; generate a drive signal based at least in part on the input signal, the drive signal being associated with an on-time period and an off-time period, the on-time period including a first beginning and a first end; and output, at the second controller terminal, the drive signal to a switch to close the switch during the on-time period and open the switch during the off-time period to affect a current associated with a secondary winding of the power converter. The system controller is further configured to detect a demagnetization period associated with the secondary winding based at least in part on the input signal.
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公开(公告)号：US10595369B2
公开(公告)日：2020-03-17
申请号：US16151076
申请日：2018-10-03
Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.
Inventor： Meng Li , Mingli Kang , Liqiang Zhu , Lieyi Fang
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.
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公开(公告)号：US10566809B2
公开(公告)日：2020-02-18
申请号：US15835232
申请日：2017-12-07
Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.
Inventor： Miao Li , Lieyi Fang
Abstract: System and method for discharging a capacitor. An example system includes a signal detector and a discharge control component. The signal detector is configured to receive an input signal and generate a detection signal based on at least information associated with the input signal, the input signal being associated with an alternate current signal received by a capacitor including a first capacitor terminal and a second capacitor terminal. The discharge control component configured to receive at least the detection signal and generate an output signal to discharge the capacitor if the detection signal satisfies one or more conditions.
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公开(公告)号：US20190393784A1
公开(公告)日：2019-12-26
申请号：US16459987
申请日：2019-07-02
Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.
Inventor： HAIBO LI , Fagang Wang , Qiang Luo , Lieyi Fang
Abstract: System controller and method for a power converter. For example, the system controller includes a first current controller configured to receive a first input signal and generate a first output signal based at least in part on the first input signal, a second current controller configured to receive a compensation signal and a second input signal and generate a second output signal based at least in part on the second input signal, and a drive signal generator configured to receive the first output signal and the second output signal, generate a first drive signal based at least in part on the first output signal and the second output signal, and generate a second drive signal based at least in part on the first output signal and the second output signal.
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公开(公告)号：US20190363633A1
公开(公告)日：2019-11-28
申请号：US16359918
申请日：2019-03-20
Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.
Inventor： XIAOMIN HUANG , HUAWEI LV , CHAO YAO , QIANG LUO , LIEYI FANG
Abstract: 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.
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