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公开(公告)号：EP3940959A1
公开(公告)日：2022-01-19
申请号：EP21185102.7
申请日：2021-07-12
发明人： HUANG, Ying , GAO, Di , LI, Kun , QIN, Jinyu
摘要： An integrator and an analog-to-digital converter are provided. The analog-to-digital converter includes the integrator, a comparison circuit and a control logic circuit. The integrator includes an operational amplifier, offset capacitors, input capacitors, integral capacitors and controllable switches. The input capacitors and the integral capacitors are connected to the operational amplifier via controllable switches, so that the integrator operates in various operation modes. Operation states of the offset capacitors in a first phase and a second phase of an operation cycle are controlled by switching on or off the controllable switches. Therefore, an offset voltage of the integrator is eliminated, and conversion efficiency and conversion accuracy of the analog-to-digital converter is improved.
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12.发明公开
公开(公告)号：EP3592114A1
公开(公告)日：2020-01-08
申请号：EP19183126.2
申请日：2019-06-28
发明人： WANG, Longqi , WANG, Jianxin
IPC分类号： H05B33/08
摘要： A reset current control circuit (42), a reset current control method and an LED driving circuit are provided. A reset current is generated in a case that it is detected that a dimmer is in an off state, to reset the dimmer. The reset current is variable and has a contrary variation trend to a direct current bus voltage of the LED driving circuit, such that a circuit loss of the dimmer during the reset process is reduced, thereby improving the efficiency of the circuit.
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公开(公告)号：EP3582383A2
公开(公告)日：2019-12-18
申请号：EP19179355.3
申请日：2019-06-11
发明人： ZHANG, Wang , ZHAO, Chen
IPC分类号： H02M3/158
摘要： A power converter is provided. At least one A-type switching power stage circuit and one B-type switching power stage circuit are arranged between an input terminal and an output terminal of the power converter. The at least one A-type switching power stage circuit is in interleaving connection with the B-type switching power stage circuit. In this way, a ripple of an output voltage is reduced, and a required output capacitance is reduced. Further, the power converter has a high gain and an adjustable stabilized output voltage.
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公开(公告)号：EP4440052A1
公开(公告)日：2024-10-02
申请号：EP24167452.2
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 communication method and a single-wire communication system are disclosed. The single-wire communication system sequentially performs address coding on a plurality of slave devices according to the positions of the plurality of slave devices in a communication link, and a master device sequentially finish the address coding of all of the plurality of slave devices by transmitting an addressing command. And when data broadcasting or call transmission is performed on the latter stage, the communication of the master device and each of the plurality of slave devices may be implemented by inserting corresponding address data into the coding command.
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15.发明公开
公开(公告)号：EP4181375A1
公开(公告)日：2023-05-17
申请号：EP22205485.0
申请日：2022-11-04
摘要： The present application provides a multilevel self-balance control circuit, comprising: a voltage divider unit (11) for dividing an input voltage; a voltage-controlled charge source load (12), adaptively adjusting the input charge amount based on the output voltage of the voltage divider unit, so that the total amount of charge flowing through the voltage-controlled charge source load during the period of each working state of the voltage divider unit is positively correlated with the output voltage of the voltage divider unit, and the balance control is achieved through negative feedback; a control unit (13), which controls the voltage divider unit and voltage-controlled charge source load in linkage. In the present disclosure, an active load is coupled to the output side of the voltage divider unit, and the power flowing through the active load is met positively correlated with the output power of the current voltage divider unit, and the automatic balancing of the voltage divider unit is realized by negative feedback. Simultaneously, the front-stage circuit and the rear-stage active load are controlled in linkage to reduce the need for current or voltage sampling and control, thereby saving system cost and reducing system complexity.
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公开(公告)号：EP4156481A1
公开(公告)日：2023-03-29
申请号：EP22195639.4
申请日：2022-09-14
发明人： ZHANG, Zhen , ZHANG, Wang , SUN, Junyan
摘要： The present disclosure discloses a power conversion module and a power converter. The power conversion module includes N-level structures. Each of the previous N-1 level structures includes a basic unit, and an i-th level structure includes 2 i-1 balance units. By controlling switching states of switches in each of the basic units and the balance units, when the power conversion module operates in a steady state, a voltage of a flying capacitor in the basic unit is substantially stable, and the output currents of each of the balance units are equal. The present disclosure retains the advantages of the three-level Buck DC-DC power converter (such as reducing the withstanding voltage of the power switches, and using smaller inductor), and solves the problem that the three-level Buck power converter cannot automatically realize the voltage balance of the flying capacitor. Also, no additional control strategy is needed to ensure the current equalization of each inductor, and a higher voltage conversion ratio can be provided without changing the duty ratio of the balance unit.
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公开(公告)号：EP3731601A1
公开(公告)日：2020-10-28
申请号：EP20166740.9
申请日：2020-03-30
发明人： CHEN, Hao , WANG, Jianxin , CHEN, Huiqiang , WANG, Zhishuo
IPC分类号： H05B45/31 , H05B45/10 , H05B45/395 , H05B39/04
摘要： A current drive circuit, and a light emitting diode (LED) device using the same are provided. The current drive circuit is compatible with a triac dimmer in an intelligent dimming process. In a case that a duty cycle of a PWM dimming signal is small, an input current path is cut off actively, so that the triac dimmer is turned off in advance while being restarted, thereby avoiding a problem that an LED load flickers in a dimming process due to a small duty cycle of the PWM dimming signal.
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公开(公告)号：EP3582383A3
公开(公告)日：2020-01-01
申请号：EP19179355.3
申请日：2019-06-11
发明人： ZHANG, Wang , ZHAO, Chen
IPC分类号： H02M3/158
摘要： A power converter is provided. At least one A-type switching power stage circuit and one B-type switching power stage circuit are arranged between an input terminal and an output terminal of the power converter. The at least one A-type switching power stage circuit is in interleaving connection with the B-type switching power stage circuit. In this way, a ripple of an output voltage is reduced, and a required output capacitance is reduced. Further, the power converter has a high gain and an adjustable stabilized output voltage.
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公开(公告)号：EP4459833A1
公开(公告)日：2024-11-06
申请号：EP24172344.4
申请日：2024-04-25
发明人： CUI, Pengyu , CHEN, Lei
IPC分类号： H02J7/00
摘要： A control circuit, a control method, and a charger applying the same are provided. A level state of a first pin CC1 or a second pin CC2 at an interface of the charger is configured for determining whether a load device is connected to the charger. When the load device is detected to be connected to the charger, an output voltage of a power supply device is controlled to be not less than a first threshold, and then a load switch is turned on to start charging the load device. When the load device is detected not to be connected to the charger, the load switch is turned off, and then a reference voltage of the output voltage of the power supply device is reduced, so that the output voltage is reduced and the output voltage is maintained at a second threshold. The second threshold is less than the first threshold, thereby reducing the standby power consumption of the charger as a whole.
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公开(公告)号：EP4439317A1
公开(公告)日：2024-10-02
申请号：EP24167453.0
申请日：2024-03-28
发明人： YANG, Yuanyu , XU, Xiaoqiang , ZHANG, Zongquan
IPC分类号： G06F13/20 , G06F13/40 , G06F13/42 , H04L12/40 , H04L12/403 , G06F12/06 , H04L61/5038
CPC分类号： G06F13/20 , G06F13/4068 , G06F13/4247 , G06F13/4282 , H04L12/40078 , H04L12/40032 , H04L61/5038 , G06F12/0676 , H04L12/403
摘要： A communication system and a communication method are disclosed. The communication system includes a master device (Master) and at least two communication channels (MD01 - MD04). Each communication channel includes at least one serially connected chip (IC(1,1)- IC(4,1)). Each chip includes a communication input pin (SDI), a communication output pin (SDO), and at least one addressing pin (ADDR). The first chip (IC(1,1)- IC(4,1)) in each communication channel is connected to the corresponding output port (MD01 - MD04) of the master device. The connection of the addressing pin in the chip includes one of floating, coupling to the communication input pin of the chip and coupling to the communication output pin of the chip. The master device distinguishes each communication channel according to the connection of the addressing pin of at least one first chip in each communication channel. The communication system saves the port resources of the master device.
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