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公开(公告)号：EP4170841A1
公开(公告)日：2023-04-26
申请号：EP22203265.8
申请日：2022-10-24
发明人： HACKETT, Nathan
IPC分类号： H02H3/38
摘要： A fault detection method and device are provided. By performing a sampling operation to obtain a first voltage signal and a first current signal from a circuit path, and phases of the first voltage signal and the first current signal are adjusted to obtain a second voltage signal and a second current signal. The second voltage signal and the second current signal are transmitted to a pre-trained fault detection network for processing, such that a fault detection result is obtained. When the fault detection result indicates presence of a fault, the circuit path is controlled to be disconnected. Therefore, a fault may be detected based on the phase information and the amplitude information of the current signal and the voltage signal from the circuit path, which improves the accuracy of the fault detection.
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公开(公告)号：EP4123892A1
公开(公告)日：2023-01-25
申请号：EP22186223.8
申请日：2022-07-21
发明人： CHEN, Chaojun , DENG, Jian , JIN, Jin
摘要： A resonant converter, and a control circuit for the resonant converter are provided. A resonant current of the resonant converter is sampled and sent to the control circuit for integration so as to control the charge of the resonant converter. Further, the feed-forward current is introduced and integrated together with the sampled resonant current. Therefore, when the output power reaches the minimum value due to the charge control, the output power is further reduced, such that the resonant converter smoothly transitions from the charge control to the equivalent frequency control, which further improves the system efficiency and can realize the application of a wide output range.
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公开(公告)号：EP4106167A1
公开(公告)日：2022-12-21
申请号：EP22178920.9
申请日：2022-06-14
发明人： HUANG, Qiukai , DAI, Jiandong
摘要： A control circuit and an AC-DC power supply are provided. A ripple reference signal characterizing an industrial frequency ripple component of an output voltage is added to a reference voltage of a desired output voltage, so that a reference and a feedback voltage of the output voltage are almost the same at the industrial frequency band. In addition, a voltage compensation signal outputted by an error compensation circuit does not include the industrial frequency ripple component, and the voltage compensation signal without the industrial frequency ripple component does not affect a tracking reference of the current loop. Therefore, the loop can be designed without considering limit of the industrial frequency on a cut-off frequency of the loop, thereby effectively increasing the cut-off frequency of the loop and improving a dynamic response speed of the loop.
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公开(公告)号：EP4071991A1
公开(公告)日：2022-10-12
申请号：EP22167240.5
申请日：2022-04-07
发明人： WANG, Longqi , WANG, Hanxiang
摘要： A control circuit, a control method and a resonant converter are provided. The resonant converter includes a first power switch transistor and a second power switch transistor. The second power switch transistor and the first power switch transistor are coupled in series sequentially between a ground potential terminal and a high potential terminal at an input side of the resonant converter. The control circuit includes a bridge midpoint voltage control circuit. The bridge midpoint voltage control circuit is configured to control a bridge midpoint voltage in a process of starting the resonant converter, to prevent a voltage of a resonant capacitor from being excessively high in a time period during which the second power switch transistor is on. The bridge midpoint voltage represents a voltage at a common terminal of the first power switch transistor and the second power switch transistor.
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公开(公告)号：EP3506481A1
公开(公告)日：2019-07-03
申请号：EP18203844.8
申请日：2018-10-31
发明人： ZHAO, Chen , ZHANG, Wang
摘要： A direct current-direct current converter is provided. In the direct current-direct current converter, a switched capacitor converter is cascaded with at least one switch converter. In view of the feature that the switched capacitor converter includes multiple switch groups, the switch converter is configured to share at least one of the switch groups of the switched capacitor converter, which can effectively reduce the number of circuit components and increase utilization of the circuit components. In addition, the sharing of the switch group brings no negative effect on the operation of the switched capacitor converter, thus the DC-DC converter achieves an adjustable smoothing output voltage and an adjustable gain.
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公开(公告)号：EP4181380A1
公开(公告)日：2023-05-17
申请号：EP22207485.8
申请日：2022-11-15
发明人： ZHANG, Xiahe , DENG, Jian
摘要： The present disclosure provides a switching power supply circuit including: a transformer, comprising a primary winding and a secondary winding; a resonant capacitor and a resonant inductor, connected in series with the primary winding to form a series structure; a power switch module, receiving an input voltage and connecting two terminals of the series structure to form a resonance circuit; an output rectification module, connected to the secondary winding and generating an output voltage; an operating mode control module, receiving the input voltage and the output voltage, controlling the output rectification module such that the switching power supply circuit is operated in LLC mode when a ratio of the input voltage and the output voltage is smaller than or equal to a predetermined value, and controlling the output rectification module such that the switching power supply circuit is operated in AHB mode when the ratio of the input voltage and the output voltage is greater than the predetermined value. The disclosure unifies the topologies of AHB and LLC, and enables the switching power supply circuit to have the advantages of high efficiency and wide input and output range at the same time by switching the topology operating modes.
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公开(公告)号：EP4125216A1
公开(公告)日：2023-02-01
申请号：EP22187066.0
申请日：2022-07-26
发明人： YE, Yan , LIANG, Cheng
摘要： A phase-locked loop circuit and a method for controlling the phase-locked loop circuit are provided. Multiple values of a voltage-controlled oscillator capacitor array control signal respectively corresponding to multiple desired values of a frequency control word signal and multiple values of a charge pump current control signal respectively corresponding to the multiple desired values of the frequency control word signal are acquired in a calibration mode. In a phase-locked mode, a target value of the voltage-controlled oscillator capacitor array control signal corresponding to a target value of the frequency control word signal and a target value of the charge pump current control signal corresponding to the target value of the voltage-controlled oscillator capacitor array control signal are determined based on the data acquired in the calibration mode, to control the phase-locked loop circuit to achieve the phase lock. Therefore, an optimal sub-band is directly determined based on the acquired data, thereby shortening the duration spent by the phase-locked loop circuit on achieving phase lock and reducing power consumption of the phase-locked loop circuit in the process of achieving phase lock.
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公开(公告)号：EP3745575A1
公开(公告)日：2020-12-02
申请号：EP20177280.3
申请日：2020-05-28
发明人： WANG, Zhaofeng , HUANG, Xiaodong , ZHAO, Chen
摘要： A power factor correction circuit, a control method and a controller are disclosed. On-time of a main switch of a switching-type regulator is adjusted based on the measured total harmonic distortion, to decrease total harmonic distortion while performing power factor correction, without special compensation for a certain type of factors that affect a total harmonic distortion index, such that the control method is simplified.
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9.发明公开
公开(公告)号：EP4440051A1
公开(公告)日：2024-10-02
申请号：EP24167118.9
申请日：2024-03-28
发明人： YANG, Yuanyu , XU, Xiaoqiang , WANG, Jianxin
IPC分类号： H04L12/403
CPC分类号： Y02D10/00 , H04L12/403
摘要： A single wire serial communication method and single wire serial communication system are disclosed. In every communication, the master device transmits a data packet, and each of the plurality of slave devices sequentially receives the data packet. The slave device forwards the data packet to a next slave device, and before the data packet are forwarded to the next slave device, the slave device modifies device address data in the data packet. The slave device compares the device address data in the received data packet with preset data or the device address data transmitted by the master device in order to find at least one target slave device in the communication. The single wire serial communication method and the single wire serial communication system solves a problem of automatic addressing of single wire serial communication of a plurality of same apparatus without performing address initialization, thereby avoiding all communication on the latter stage from influencing due to the failure of the address initialization.
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公开(公告)号：EP4187764A1
公开(公告)日：2023-05-31
申请号：EP22210170.1
申请日：2022-11-29
发明人： CHEN, Siyuan , WEN, Sihua
摘要： A charging circuit is disclosed. The charging circuit utilizes multi-level technology to improve the efficiency of the charging circuit under the premise of maintaining the boosting, bucking, and bucking-boosting functions of the traditional buck-boost topology. Especially under the circumstance of high input voltage, it can give full play to the advantages of multi levels. The switching loss, withstand voltage requirements of power MOSFTs, and inductance are reduced, and the efficiency is improved.
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