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公开(公告)号：US20240333125A1
公开(公告)日：2024-10-03
申请号：US18623531
申请日：2024-04-01
发明人： TUOFU LIU , QIAN FANG , YUN SUN , XIUHONG ZHANG
CPC分类号： H02M1/0009 , H02M1/32 , H02M3/33507 , H02M3/33571
摘要： Controller and method for a power converter. For example, a controller for a power converter includes: an output-voltage detector configured to detect a value of an output voltage of the power converter and generate a detection signal that represents the detected value of the output voltage; and a peak-current-value determination unit configured to receive the detection signal and determine a peak value of a magnetization current for the power converter in a discontinuous conduction mode; wherein the peak-current-value determination unit is further configured to: determine the peak value of the magnetization current for the power converter in the discontinuous conduction mode based on at least information associated with the detected value of the output voltage of the power converter; and generate a peak signal that represents the determined peak value of the magnetization current.
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2.发明授权公开(公告)号：US12095379B2
公开(公告)日：2024-09-17
申请号：US17857475
申请日：2022-07-05
发明人： Chunsheng Zhao
CPC分类号： H02M3/33592 , H02M1/08
摘要： System and method for controlling synchronous rectification. For example, a system for controlling synchronous rectification includes: a first controller terminal configured to receive a first input voltage a second controller terminal biased to a second input voltage; a third controller terminal configured to output an output voltage; a first signal generator configured to generate a logic signal based on at least information associated with the first input voltage a second signal generator configured to receive the logic signal and generate an adjustment signal based on at least information associated with the logic signal and the first input voltage; and a driver configured to receive the logic signal and the adjustment signal and generate the output voltage based at least in part on the logic signal and the adjustment signal.
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公开(公告)号：US20240250649A1
公开(公告)日：2024-07-25
申请号：US18429805
申请日：2024-02-01
发明人： YAOZHANG CHEN , XIANGKUN ZHAI , LIQIANG ZHU , LIEYI FANG
CPC分类号： H03F3/45076 , H03F2200/129 , H03F2203/45116 , H03K21/08 , H03M1/66
摘要： System and method for error amplification and processing. For example, the system includes: a signal processing unit configured to receive a reference signal and a feedback signal and generate a digital pulse signal, a frequency of the digital pulse signal being associated with a difference between the reference signal and the feedback signal; a counter configured to receive the digital pulse signal and generate a counter output signal based on at least information associated with the digital pulse signal; and a digital-to-analog converter configured to receive the counter output signal and generate an output signal based on at least information associated with the counter output signal.
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公开(公告)号：US12047007B2
公开(公告)日：2024-07-23
申请号：US17689860
申请日：2022-03-08
发明人： Yuan Lin , Penglin Yang , Dongze Yang , Lieyi Fang
CPC分类号： H02M3/33569 , H02M1/08 , H02M1/44
摘要： Controller and method for a switching power supply. For example, a controller for a switching power supply includes: a first terminal configured to receive a feedback voltage representing an output voltage associated with a secondary winding of the switching power supply; a second terminal configured to output a drive voltage to a first transistor associated with a primary winding coupled to the secondary winding of the switching power supply; a comparator configured to receive the feedback voltage and a predetermined feedback threshold and generate a comparison signal based at least in part on the feedback voltage and the predetermined feedback threshold; a pulse-width detector configured to detect a pulse width of the drive voltage during a first switching cycle, compare the detected pulse width with a predetermined time threshold, and generate a detection signal based at least in part on the detected pulse width and the predetermined time threshold.
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5.发明公开公开(公告)号：US20240235224A1
公开(公告)日：2024-07-11
申请号：US18405151
申请日：2024-01-05
发明人： GUANGWEN ZHENG , MENGKE SHA , ZHIQIN ZHAO , ZHILIANG CHEN
CPC分类号： H02J7/0042 , H03K17/51 , H03K2217/0063 , H03K2217/0072
摘要： Chip package and method thereof. For example, a chip package of a charging controller chip for a USB charger includes: a high-side main transistor including a first drain, a first gate and a first source, the first drain being configured to receive an input voltage; a low-side main transistor including a second drain, a second gate and a second source, the second source being configured to receive a ground voltage, the second drain being connected to the first source and a first coil terminal of an inductive coil, the inductive coil further including a second coil terminal; one or more port main transistors, each port main transistor of the one or more port main transistors including a third drain, a third gate and a third source, the third drain being biased to a converter voltage and connected to the second coil terminal of the inductive coil.
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公开(公告)号：US12027960B2
公开(公告)日：2024-07-02
申请号：US17839972
申请日：2022-06-14
发明人： Qian Fang , Yaozhang Chen , Liqiang Zhu
CPC分类号： H02M1/0025 , H02M1/0022 , H02M5/2932
摘要： Controller and method for a power converter. For example, a controller for a power converter includes: a feedback detector configured to receive a feedback voltage, sample the feedback voltage, and generate a sampled voltage based at least in part on the feedback voltage, the sampled voltage being associated with one or more fluctuations in magnitude; a resistor selector configured to receive the sampled voltage and generate one or more control signals based at least in part on the one or more fluctuations associated with the sampled voltage; a variable resistor network configured to receive the one or more control signals, determine a network resistance based at least in part on the one or more control signals, and output a compensation voltage based at least in part on the network resistance; and a voltage generator connected to the variable resistor network and configured to receive the compensation voltage.
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7.发明公开公开(公告)号：US20240178750A1
公开(公告)日：2024-05-30
申请号：US18499155
申请日：2023-10-31
发明人： PENGLIN YANG , YUAN LIN
CPC分类号： H02M3/01 , H02M1/0003 , H02M3/335 , H02M3/33507
摘要： Controller and method for a quasi-resonant switching power supply. For example, a controller for a quasi-resonant switching power supply includes: a valley detector configured to receive a voltage signal, detect one or more voltage valleys of the voltage signal in magnitude, and generate a detection signal representing the detected one or more voltage valleys; a valley-locking controller configured to receive one or more signals, generate a mode control signal that indicates a selected valley-locking mode based at least in part on the one or more signals, select from the detected one or more voltage valleys, one or more valleys that correspond to the selected valley-locking mode, and generate a valley control signal indicating the one or more selected valleys; and a gate driver configured to generate a drive signal based on at least information associated with the valley control signal.
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公开(公告)号：US11956867B2
公开(公告)日：2024-04-09
申请号：US17400282
申请日：2021-08-12
发明人： Lieyi Fang , Jun Zhou
IPC分类号： H05B45/10 , H05B45/14 , H05B45/375
CPC分类号： H05B45/10 , H05B45/14 , H05B45/375 , Y02B20/30
摘要： System and method for providing at least an output current to one or more light emitting diodes. The system includes a control component configured to receive at least a demagnetization signal, a sensed signal and a reference signal and to generate a control signal based on at least information associated with the demagnetization signal, the sensed signal and the reference signal, and a logic and driving component configured to receive at least the control signal and output a drive signal to a switch based on at least information associated with the control signal. The switch is connected to a first diode terminal of a diode and a first inductor terminal of an inductor. The diode further includes a second diode terminal, and the inductor further includes a second inductor terminal.
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9.发明公开公开(公告)号：US20240049371A1
公开(公告)日：2024-02-08
申请号：US18220584
申请日：2023-07-11
发明人： KE LI , ZHUOYAN LI , LIQIANG ZHU
IPC分类号： H05B45/14 , H05B47/165 , H05B45/39 , H05B45/345
CPC分类号： H05B45/14 , H05B47/165 , H05B45/39 , H05B45/345
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：US20240008151A1
公开(公告)日：2024-01-04
申请号：US18144096
申请日：2023-05-05
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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