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公开(公告)号：US20240334563A1
公开(公告)日：2024-10-03
申请号：US18429816
申请日：2024-02-01
发明人： LIQIANG ZHU , JUN ZHOU
IPC分类号： H05B45/10 , H05B45/31 , H05B45/345 , H05B45/395 , H05B45/50 , H05B45/59
CPC分类号： H05B45/10 , H05B45/31 , H05B45/345 , H05B45/395 , H05B45/50 , H05B45/59
摘要： System and method for controlling one or more light emitting diodes. For example, the system for controlling one or more light emitting diodes includes a current regulation circuit coupled to a cathode of one or more light emitting diodes. The one or more light emitting diodes include the cathode and an anode configured to receive a rectified voltage. Additionally, the system includes a control circuit coupled to the cathode of the one or more light emitting diodes. The control circuit is configured to receive a first voltage from the cathode of the one or more light emitting diodes, compare a second voltage and a threshold voltage, and generate a control signal based at least in part on the second voltage and the threshold voltage. The second voltage indicates a magnitude of the first voltage.
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2.发明公开公开(公告)号：US20240147591A1
公开(公告)日：2024-05-02
申请号：US18242474
申请日：2023-09-05
发明人： LIQIANG ZHU , Jun Zhou
IPC分类号： H05B45/397 , H05B45/3575
CPC分类号： H05B45/397 , H05B45/3575
摘要： System and method for controlling one or more light emitting diodes. For example, the system includes: a current regulator including a first regulator terminal and a second regulator terminal, the first regulator terminal being configured to receive a diode current flowing through the one or more light emitting diodes, the current regulator being configured to generate a sensing signal representing the diode current, the second regulator terminal being configured to output the sensing signal; a bleeder controller including a first controller terminal and a second controller terminal, the first controller terminal being configured to receive the sensing signal from the second regulator terminal, the bleeder controller being configured to generate a first bleeder control signal based at least in part on the sensing signal, the second controller terminal being configured to output the first bleeder control signal.
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公开(公告)号：US20240097665A1
公开(公告)日：2024-03-21
申请号：US18238990
申请日：2023-08-28
发明人： LIQIANG ZHU , Jun Zhou
IPC分类号： H03K5/24 , H05B45/10 , H05B45/3575 , H05B45/395
CPC分类号： H03K5/24 , H05B45/10 , H05B45/3575 , H05B45/395 , G01R19/16538
摘要： System and method for controlling one or more light emitting diodes. For example, the system for controlling one or more light emitting diodes includes a current generator configured to generate a first current flowing through one or more light emitting diodes. The one or more light emitting diodes are configured to receive a rectified voltage generated by a rectifying bridge coupled to a TRIAC dimmer. Additionally, the system includes a bleeder configured to receive the rectified voltage, and a controller configured to receive a sensing voltage from the current generator and output a control signal to the bleeder. The sensing voltage indicates a magnitude of the first current.
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4.发明申请公开(公告)号：US20210045213A1
公开(公告)日：2021-02-11
申请号：US16944665
申请日：2020-07-31
发明人： LIQIANG ZHU , JUN ZHOU
IPC分类号： H05B45/397 , H05B45/3575
摘要： System and method for controlling one or more light emitting diodes. For example, the system includes: a current regulator including a first regulator terminal and a second regulator terminal, the first regulator terminal being configured to receive a diode current flowing through the one or more light emitting diodes, the current regulator being configured to generate a sensing signal representing the diode current, the second regulator terminal being configured to output the sensing signal; a bleeder controller including a first controller terminal and a second controller terminal, the first controller terminal being configured to receive the sensing signal from the second regulator terminal, the bleeder controller being configured to generate a first bleeder control signal based at least in part on the sensing signal, the second controller terminal being configured to output the first bleeder control signal.
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5.发明申请公开(公告)号：US20200323062A1
公开(公告)日：2020-10-08
申请号：US16851249
申请日：2020-04-17
发明人： Qiang Luo , LIQIANG ZHU , ZHILIANG CHEN , LIEYI FANG
IPC分类号： H05B45/37 , H05B45/48 , H05B45/395
摘要： A two-terminal IC chip and method thereof. For example, a two-terminal IC chip includes a first chip terminal and a second chip terminal. A first terminal voltage is a voltage of the first chip terminal, a second terminal voltage is a voltage of the second chip terminal, and a chip voltage is equal to a difference between the first terminal voltage and the second terminal voltage. The chip is configured to allow a chip current to flow into the chip at the first chip terminal and out of the chip at the second chip terminal, or to flow into the chip at the second chip terminal and out of the chip at the first chip terminal. The chip current is larger than or equal to zero in magnitude. The chip is further configured to change a relationship between the chip voltage and the chip current with respect to time. The chip is an integrated circuit, and the chip does not include any additional chip terminal other than the first chip terminal and the second chip terminal.
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公开(公告)号：US20210204375A1
公开(公告)日：2021-07-01
申请号：US17127711
申请日：2020-12-18
发明人： KE LI , LIQIANG ZHU
摘要： System and method for controlling one or more light emitting diodes. For example, the system includes: a phase detector configured to process information associated with a rectified voltage generated by a rectifier and related to a TRIAC dimmer, the rectified voltage corresponding to a first waveform during a first half cycle of an AC voltage and corresponding to a second waveform during a second half cycle of the AC voltage, the phase detector being further configured to generate a phase detection signal representing a first time duration during which the first waveform indicates that the rectified voltage is larger than a predetermined threshold and representing a second time duration during which the second waveform indicates that the rectified voltage is larger than the predetermined threshold; and a mode detector configured to process information associated with the rectified voltage.
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7.发明申请公开(公告)号：US20210153313A1
公开(公告)日：2021-05-20
申请号：US17074303
申请日：2020-10-19
发明人： KE LI , ZHUOYAN LI , LIQIANG ZHU
IPC分类号： H05B45/14 , H05B45/345 , H05B45/39 , H05B47/165
摘要： System and method for controlling one or more light emitting diodes. For example, the system includes: a voltage detector configured to receive a rectified voltage associated with a TRIAC dimmer and generated by a rectifying bridge and generate a first sensing signal representing the rectified voltage; a distortion detector configured to receive the first sensing signal, determine whether the rectified voltage is distorted or not based at least in part on the first sensing signal, and generate a distortion detection signal indicating whether the rectified voltage is distorted or not; and a phase detector configured to receive the first sensing signal and generate a phase detection signal indicating a detected phase range within which the TRIAC dimmer is in a conduction state based at least in part on the first sensing signal.
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8.发明申请公开(公告)号：US20200267817A1
公开(公告)日：2020-08-20
申请号：US16791329
申请日：2020-02-14
发明人： JIQING YANG , ZHUOYAN LI , LIQIANG ZHU , JUN ZHOU
IPC分类号： H05B45/37
摘要： System and method for voltage conversion to drive one or more light emitting diodes with at least a TRIAC dimmer. For example, the system includes: a phase detector configured to receive a first rectified voltage generated based at least in part on an AC input voltage processed by at least the TRIAC dimmer, the phase detector being further configured to generate a digital signal representing phase information associated with the first rectified voltage; a voltage generator configured to receive the digital signal and generate a DC voltage based at least in part on the digital signal; and a driver configured to receive the DC voltage and affect, based at least in part on the DC voltage, a current flowing through the one or more light emitting diodes; wherein the current changes with the phase information according to a predetermined function.
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公开(公告)号：US20200228019A1
公开(公告)日：2020-07-16
申请号：US16674820
申请日：2019-11-05
发明人： LIQIANG ZHU , Lieyi Fang
摘要： 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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公开(公告)号：US20190124736A1
公开(公告)日：2019-04-25
申请号：US16124739
申请日：2018-09-07
发明人： LIQIANG ZHU , JUN ZHOU
摘要： System and method for controlling one or more light emitting diodes. For example, the system for controlling one or more light emitting diodes includes a current generator configured to generate a first current flowing through one or more light emitting diodes. The one or more light emitting diodes are configured to receive a rectified voltage generated by a rectifying bridge coupled to a TRIAC dimmer. Additionally, the system includes a bleeder configured to receive the rectified voltage, and a controller configured to receive a sensing voltage from the current generator and output a control signal to the bleeder. The sensing voltage indicates a magnitude of the first current.
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