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51.发明授权公开(公告)号：US10483838B2
公开(公告)日：2019-11-19
申请号：US15374896
申请日：2016-12-09
Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.
Inventor： Chao Yao , Yunchao Zhang , Yuan Lin , Zhiqiang Sun , Lieyi Fang
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.
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公开(公告)号：US20190327804A1
公开(公告)日：2019-10-24
申请号：US16359933
申请日：2019-03-20
Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.
Inventor： JUN ZHOU , Yunchao Zhang , Lieyi Fang
IPC: H05B33/08
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.
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公开(公告)号：US10455657B2
公开(公告)日：2019-10-22
申请号：US15934460
申请日：2018-03-23
Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.
Inventor： Liqiang Zhu , Jun Zhou , Yongsheng Su , Lieyi Fang
Abstract: System and method for dimming control of one or more light emitting diodes. An example system includes one or more signal processing components configured to receive a first signal associated with a TRIAC dimmer, process information associated with the first signal, determine whether the TRIAC dimmer is in a first condition or a second condition, generate a second signal based on at least information associated with the first signal, and send the second signal to a switch. The one or more signal processing components are further configured to, if the TRIAC dimmer is determined to be in the first condition, generate the second signal to cause the switch to be opened and closed corresponding to a modulation frequency.
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公开(公告)号：US10411604B2
公开(公告)日：2019-09-10
申请号：US15204324
申请日：2016-07-07
Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.
Inventor： Yaming Cao , Zhenglan Xia , Yuan Lin , Qiang Luo , Lieyi Fang
Abstract: System and method for regulating a power conversion system. A system controller for regulating a power conversion system includes a first controller terminal and a second controller terminal. Additionally, 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 conversion system. Moreover, the system controller is further configured to determine whether the input signal is larger than a first threshold at a first time, in response to the input signal being determined to be larger than the first threshold at the first time, determine whether the input signal is smaller than a second threshold at a second time.
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55.发明授权公开(公告)号：US10389234B2
公开(公告)日：2019-08-20
申请号：US15719212
申请日：2017-09-28
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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Patent Agency Ranking
公开(公告)号：US10334679B2
公开(公告)日：2019-06-25
申请号：US15849452
申请日：2017-12-20
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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公开(公告)号：US10334677B2
公开(公告)日：2019-06-25
申请号：US15649566
申请日：2017-07-13
Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.
Inventor： Liqiang Zhu , Jiqing Yang , Zhuoyan Li , Lieyi Fang
Abstract: Systems and methods for dimming control using TRIAC dimmers are provided. An example apparatus for a power conversion system includes: a process-and-drive component configured to receive an input signal and output a drive signal to a switch to affect a current that flows through a primary winding of a power conversion system. The input signal includes a first pulse associated with a first input period and a second pulse associated with a second input period. The drive signal is associated with a first modulation period for the first input period and a second modulation period for the second input period. The process-and-drive component is further configured to: determine the first modulation period for the first input period; change the drive signal between a first logic level and a second logic level at a modulation frequency during the first modulation period; determine the second modulation period for the second input period.
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公开(公告)号：US20190165745A1
公开(公告)日：2019-05-30
申请号：US16206677
申请日：2018-11-30
Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.
Inventor： MIAO LI , QIANG LUO , LIEYI FANG
Abstract: System controller and method for providing at least an output voltage. For example, the system controller includes a first controller terminal configured to receive an input voltage. The input voltage is associated with an input-voltage magnitude. Additionally, the system controller includes a second controller terminal configured to receive a control voltage, and a third controller terminal configured to output an output voltage to a load. Moreover, the system controller includes a supply voltage generator configured to receive the input voltage from the first controller terminal and generate a supply voltage. The supply voltage is associated with a supply voltage magnitude. Also, the system controller includes a ramp voltage generator configured to receive the supply voltage and generate a ramp voltage.
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公开(公告)号：US20190165684A1
公开(公告)日：2019-05-30
申请号：US16205015
申请日：2018-11-29
Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.
Inventor： Liqiang Zhu , Lieyi Fang
Abstract: Controller and method for a power converter. For example, the controller includes a first controller terminal coupled to a gate terminal of a transistor. The transistor further includes a drain terminal and a source terminal, and the first controller terminal is at a first voltage as a first function of time. Additionally, the controller includes a second controller terminal coupled to the source terminal. The second controller terminal is at a second voltage as a second function of time. Moreover, the controller includes a third controller terminal coupled to a first resistor terminal of a resistor. The resistor further includes a second resistor terminal, and the third controller terminal is at a third voltage as a third function of time. Also, the controller includes a fourth controller terminal coupled to a first capacitor terminal of a capacitor.
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60.发明申请公开(公告)号：US20190165683A1
公开(公告)日：2019-05-30
申请号：US16205002
申请日：2018-11-29
Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.
Inventor： LIQIANG ZHU , Jiqing Yang , Yaozhang Chen , Zhuoyan Li , Qiang Luo , Lieyi Fang
Abstract: Systems and methods are provided for signal processing. An example error amplifier for processing a reference signal and an input signal associated with a current of a power conversion system includes a first operational amplifier, a second operational amplifier, a first transistor, a second transistor, a current mirror component, a switch, a first resistor and a second resistor. The first operational amplifier includes a first input terminal, a second input terminal and a first output terminal, the first input terminal being configured to receive a reference signal. The first transistor includes a first transistor terminal, a second transistor terminal and a third transistor terminal, the first transistor terminal being configured to receive a first amplified signal from the first output terminal, the third transistor terminal being coupled to the second input terminal.
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