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1.发明授权公开(公告)号：US12089302B2
公开(公告)日：2024-09-10
申请号：US18220584
申请日：2023-07-11
发明人： Ke Li , Zhuoyan Li , Liqiang Zhu
IPC分类号： H05B45/39 , H05B45/14 , H05B45/345 , H05B47/165
CPC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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公开(公告)号：US12027904B2
公开(公告)日：2024-07-02
申请号：US18078816
申请日：2022-12-09
发明人： Qiang Luo , Lieyi Fang
IPC分类号： H02J7/00 , G01R19/165 , H02M1/08 , H02M3/158 , H02M1/00
CPC分类号： H02J7/00714 , G01R19/16519 , H02J7/0013 , H02J7/0047 , H02M1/083 , H02M3/158 , H02J2207/20 , H02M1/0035
摘要： System and method for charging or discharging one or more batteries. For example, a battery management system for charging or discharging one or more batteries includes: a first transistor including a first transistor terminal, a second transistor terminal, and a third transistor terminal, the second transistor terminal being configured to receive a first drive signal; a second transistor including a fourth transistor terminal, a fifth transistor terminal, and a sixth transistor terminal, the fifth transistor terminal being configured to receive a second drive signal; a burst mode detector configured to receive the first drive signal and generate a burst-mode detection signal based at least in part on the first drive signal; and a drive signal generator configured to receive the burst-mode detection signal and generate the first drive signal and the second drive signal based at least in part on the burst-mode detection signal.
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3.发明公开公开(公告)号：US20240204554A1
公开(公告)日：2024-06-20
申请号：US18544804
申请日：2023-12-19
发明人： ZHIQIANG WANG , WEI HUANG , YUNCHAO ZHANG
CPC分类号： H02J7/007182 , H02M1/0022 , H02M1/092 , H02M3/33515 , H02J2207/20
摘要： Fast charging protocol controller and method thereof. For example, a fast charging protocol controller for a power supply charger includes: a first transistor voltage-drop detector configured to detect a first transistor voltage drop from a first drain of a first transistor to a first source of the first transistor, the first transistor being configured to provide an output current of the power supply charger and an output voltage of the power supply charger; a resistor voltage-drop detector configured to detect a resistor voltage drop from a first resistor terminal of a first resistor to a second resistor terminal of the first resistor, the first resistor being configured to receive a resistor current that is equal to the output current in magnitude; and a logic controller coupled to the first transistor voltage-drop detector and the resistor voltage-drop detector.
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4.发明公开公开(公告)号：US20240179817A1
公开(公告)日：2024-05-30
申请号：US18500903
申请日：2023-11-02
发明人： ZHUOYAN LI , Ke Li , Liqiang Zhu
摘要： System and method for controlling one or more light emitting diodes. For example, the system includes: a power supply controller configured to receive a cathode voltage from a cathode of a diode, the diode including an anode configured to receive a rectified voltage generated by a rectifying bridge, the power supply controller being further configured to generate a first signal based at least in part on the cathode voltage; and a driver configured to receive the first signal and generate a second signal based at least in part on the first signal, the driver being further configured to output the second signal to a gate terminal of a transistor, the transistor including a source terminal coupled to the driver and a first resistor, the transistor further including a drain terminal coupled to the one or more light emitting diodes and an output capacitor connected to the cathode of the diode.
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公开(公告)号：US20240063724A1
公开(公告)日：2024-02-22
申请号：US18225512
申请日：2023-07-24
发明人： YAMING CAO , WUPING LIN , CHUNSHENG ZHAO , LIEYI FANG
CPC分类号： H02M3/33592 , H02M1/0012 , H02M1/08
摘要： System and method for synchronous rectification of a power converter. For example, the system for synchronous rectification includes: a first system terminal configured to receive an input voltage; and a second system terminal configured to output a drive signal to a first transistor terminal of a transistor, the transistor further including a second transistor terminal and a third transistor terminal, the second transistor terminal being connected to a secondary winding of the power converter, the power converter further including a primary winding coupled to the secondary winding; wherein the system is configured to: determine whether the input voltage becomes lower than a predetermined voltage threshold; and if the input voltage becomes lower than the predetermined voltage threshold, determine whether a time when the input voltage becomes lower than the predetermined voltage threshold is during or not during a demagnetization process of the secondary winding.
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公开(公告)号：US20230378882A1
公开(公告)日：2023-11-23
申请号：US18227952
申请日：2023-07-30
发明人： YUNCHAO ZHANG , CHAO YAO
CPC分类号： H02M3/33592 , H02M1/0032
摘要： Controller and method for charging one or more loads. For example, the controller for charging one or more loads includes: a controller terminal configured to be biased at a first voltage related to a second voltage of a secondary winding of a power converter, the power converter further including a primary winding coupled to the secondary winding, the power converter being configured to, if the power converter is not unplugged from a voltage supply for an AC input voltage, receive the AC input voltage represented by the second voltage and output an output power to the one or more loads; and a voltage detector configured to: process information associated with the first voltage; and determine whether the AC input voltage is in a first voltage state or in a second voltage state based at least in part on the first voltage.
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7.发明公开公开(公告)号：US20230327570A1
公开(公告)日：2023-10-12
申请号：US18125559
申请日：2023-03-23
发明人： Penglin Yang , Yaming Cao , Yuan Lin
CPC分类号： H02M3/33592 , H02M1/0058 , H02M1/385
摘要： Controller and method for a power converter. For example, a controller for a power converter includes: a mode detector configured to determine a mode of operation for the power converter; a first gate driver configured to output a first drive voltage to a first transistor related to a first auxiliary winding coupled to a primary winding, a secondary winding, and a second auxiliary winding; a second gate driver configured to output a second drive voltage to a second transistor related to the primary winding; wherein the first gate driver is further configured to, if the mode of operation satisfies one or more first predetermined conditions, generate the first drive voltage so that the first transistor remains turned off during a switching cycle of the power converter.
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公开(公告)号：US11764699B2
公开(公告)日：2023-09-19
申请号：US17370407
申请日：2021-07-08
发明人： Yunchao Zhang , Chao Yao
CPC分类号： H02M3/33592 , H02M1/0032
摘要： Controller and method for charging one or more loads. For example, the controller for charging one or more loads includes: a controller terminal configured to be biased at a first voltage related to a second voltage of a secondary winding of a power converter, the power converter further including a primary winding coupled to the secondary winding, the power converter being configured to, if the power converter is not unplugged from a voltage supply for an AC input voltage, receive the AC input voltage represented by the second voltage and output an output power to the one or more loads; and a voltage detector configured to: process information associated with the first voltage; and determine whether the AC input voltage is in a first voltage state or in a second voltage state based at least in part on the first voltage.
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公开(公告)号：US11764684B2
公开(公告)日：2023-09-19
申请号：US16786372
申请日：2020-02-10
发明人： Yaming Cao , Qiang Luo , Yuan Lin , Lieyi Fang
CPC分类号： H02M3/33515 , H02M1/08 , H02M3/33507 , H02M3/33592 , H02M1/0009 , H02M1/0032 , H02M1/0048 , H02M3/33523 , H02M3/33576 , Y02B70/10
摘要： 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 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 converter. Additionally, the system controller is further configured to determine whether the input signal remains larger than a first threshold for a first time period that is equal to or longer than a first predetermined duration.
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10.发明公开公开(公告)号：US20230225028A1
公开(公告)日：2023-07-13
申请号：US18081528
申请日：2022-12-14
发明人： ZHUOYAN LI , KE LI , LIQIANG ZHU
摘要： System and method for controlling one or more light emitting diodes. For example, the system includes: a power supply controller configured to receive a cathode voltage from a cathode of a diode, the diode including an anode configured to receive a rectified voltage generated by a rectifying bridge, the power supply controller being further configured to generate a first signal based at least in part on the cathode voltage; and a driver configured to receive the first signal and generate a second signal based at least in part on the first signal, the driver being further configured to output the second signal to a gate terminal of a transistor, the transistor including a source terminal coupled to the driver and a first resistor, the transistor further including a drain terminal coupled to the one or more light emitting diodes and an output capacitor connected to the cathode of the diode.
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