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公开(公告)号：US11894805B2
公开(公告)日：2024-02-06
申请号：US15289038
申请日：2016-10-07
申请人： Enphase Energy, Inc.
摘要： Devices for reducing the open circuit voltages of solar systems are described. In one embodiment, a solar system includes a string of a plurality of solar modules having an open circuit voltage. The solar system also includes a device for reducing the open circuit voltage of the string of the plurality of solar modules during an open circuit configuration.
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公开(公告)号：US20210382512A1
公开(公告)日：2021-12-09
申请号：US17405380
申请日：2021-08-18
发明人： CHE-WEI CHANG , KAI-YIN LIU , LIANG-HUAN LEI , SHIH-HSIUNG HUANG
摘要： Disclosed is a voltage reference buffer circuit including a first, second, third, and fourth bias generators and a first, second, third, and fourth driving components. The first, second, third, and fourth bias generators generate bias voltages to control the first, second, third, and fourth driving components respectively. The first, second, third, and fourth driving components are coupled in sequence, wherein the first and second driving components are different types of transistors and jointly output a first reference voltage, the third and fourth driving components are different types of transistors and jointly output a second reference voltage, and the group of the first and second driving components is separated from the group of the third and fourth driving components by a resistance load.
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公开(公告)号：US10998719B2
公开(公告)日：2021-05-04
申请号：US16728589
申请日：2019-12-27
发明人： Teddy C. T. To , Wei hua Tian
IPC分类号： H02H9/04 , G05F1/618 , G05F1/56 , H01L29/866 , H02M3/07
摘要： An apparatus may include a transient voltage suppression (TVS) device array coupled to a first input terminal and a second input terminal; and a linear regulator module having a pair of inputs connected to a respective pair of outputs of the TVS device array, wherein the TVS device array includes at least one TVS diode is connected between a first output and second output of the pair of outputs to generate a first clamping voltage signal, and wherein the linear regulator module is configured to generate a second clamping voltage signal having a second clamping voltage independent of a first clamping voltage of the first clamping voltage signal received from the TVS device array.
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公开(公告)号：US10734991B1
公开(公告)日：2020-08-04
申请号：US16460218
申请日：2019-07-02
发明人： Ting-Shuo Hsu , Chih-Wei Shen
IPC分类号： H03K17/16 , H03K17/06 , H03K17/10 , H01L27/092 , H03K19/094 , G05F1/618 , H03K19/0185 , G01R31/74
摘要： A voltage switching device, an integrated circuit device, and a voltage switching method are provided. The voltage switching device includes a reference voltage generator generating a first reference voltage and a second reference voltage, a fuse system coupled to a circuit device, and a switch circuit coupled to the reference voltage generator, the fuse system, and the circuit device. The fuse system generates a first enable signal and a second enable signal according to an input signal from a circuit device. The switch circuit transmits the first reference voltage or the second reference voltage to the circuit device according to the first enable signal and the second enable signal from the fuse system.
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公开(公告)号：US10430159B1
公开(公告)日：2019-10-01
申请号：US15652496
申请日：2017-07-18
摘要： A hardware random number generator comprises a gas discharge tube, an average voltage generator, and a comparator. The gas discharge tube includes first, second, and third terminals and may generate a variable voltage on the second terminal when a supply voltage is applied to the first and third terminals. The average voltage generator receives the variable voltage from the gas discharge tube and may generate an average voltage equal to a moving average value of the variable voltage over successive periods of time. The comparator receives the variable voltage and the average voltage and may generate a random stream of data bits, such that a value of each bit varies according to the relative magnitudes of the variable voltage and the average voltage.
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公开(公告)号：US09880573B2
公开(公告)日：2018-01-30
申请号：US14147667
申请日：2014-01-06
发明人： Zakaria Mengad , Mykhaylo Teplechuk
摘要： A low dropout (LDO) device with improved linear mode comprising an error amplifier, a programmable attenuation factor circuit coupled to said error amplifier, a feedback network whose input is electrically connected to said programmable attenuation factor circuit and whose output is electrically coupled to the negative input of said error amplifier, a high side (HS) pre-drive circuit whose input is a high impedance (HiZ) mode signal, a low side (LS) pre-drive circuit whose input is a low pull-down input mode signal, a high side (HS) output stage element electrically coupled to said high side (HS) pre-drive circuit, a low side (LS) output stage element electrically coupled to said low side (LS) pre-drive circuit, and a high side sense (HSENSE) output stage element whose gate is electrically coupled to said high side (HS) pre-drive circuit, and whose gate and source are electrically connected to the output of said error amplifier.
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公开(公告)号：US20170374713A1
公开(公告)日：2017-12-28
申请号：US15628575
申请日：2017-06-20
发明人： Bairen Liu
CPC分类号： H05B33/0821 , G05F1/40 , G05F1/618 , H02M3/157 , H02M3/158 , H05B33/0815 , H05B37/0209 , Y02B20/346
摘要： A LED driving system has an energy storage component receiving an input voltage, a power switch coupled between the energy storage component and a reference ground, a first output switch coupled between the energy storage component and a first output terminal, a second output switch coupled between the energy storage component and a second output terminal, and a control circuit, wherein the first output terminal produces a first output voltage to supply power for a first LED array, the second output terminal produces a second output voltage to supply power for a second LED array, the control circuit controls a duty cycle of the first output switch according to voltages at cathode terminals of multiple LED strings in the LED array and controls a duty cycle of the second output switch according to voltages at cathode terminals of multiple LED strings in the second LED array.
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公开(公告)号：US20170367162A1
公开(公告)日：2017-12-21
申请号：US15527206
申请日：2015-11-17
发明人： Zhichao Liu
摘要： A protection circuit for an LED driver and a DC/DC converter. The LED driver includes a DC/DC converter and a protection circuit. The DC/DC converter is used to convert the input voltage of the DC voltage input terminal into an output voltage, which comprises a high frequency switch and an inductor. The protection circuit comprises a detection module, a trigger module and a locking module. The detection module is coupled to the inductor for detecting the output voltage and outputting the voltage detection signal. The trigger module is used to receive the voltage detection signal and output a voltage trigger signal when the voltage detection signal is a negative voltage and the absolute value of the negative voltage is greater than or equal to the preset value. The locking module is coupled to the trigger module and stops the high frequency switch from operating after receiving the voltage trigger signal.
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公开(公告)号：US09651967B2
公开(公告)日：2017-05-16
申请号：US13292214
申请日：2011-11-09
摘要： Various exemplary embodiments relate a system and method for supplying power. The system may include an input/output port, a regulator, and a clamp. The regulator may supply power to the input/output port in a first mode, sink current from the input/output port in a second mode, and be disabled in a third mode. The clamp may be disabled in the first and second modes, and may limit the voltage at the input/output port below a first value in the third mode.
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10.发明授权Control circuit and control method for inhibit overshoot and undershoot in power conversion device 有权电力转换装置抑制过冲和下冲的控制电路及控制方法公开(公告)号：US09389627B2
公开(公告)日：2016-07-12
申请号：US13576379
申请日：2011-01-31
申请人： Fujio Kurokawa , Hiroyuki Osuga
发明人： Fujio Kurokawa , Hiroyuki Osuga
CPC分类号： G05F1/618 , H02M3/156 , H02M2003/1566
摘要： By adding a suppression amount for suppressing an overshoot or undershoot that attenuates with time during an overshoot or undershoot period, the overshoot or undershoot can be suppressed within a short time and the output can be made close to a normal value. When an output has overshot, an overshoot suppression amount including a time-dependent attenuation suppression amount is added to an output feedback control amount, the time-dependent attenuation suppression amount being defined in a period during which the output overshoots. Alternatively, when the output has undershot, an undershoot suppression amount including a time-dependent attenuation suppression amount is added to the output feedback control amount, the time-dependent attenuation suppression amount being defined in a period during which the output undershoots.
摘要翻译： 通过在过冲或下冲周期期间添加用于抑制随时间衰减的过冲或下冲的抑制量，可以在短时间内抑制过冲或下冲，并且可以使输出接近正常值。 当输出过冲时，将包括时间依赖衰减抑制量的过冲抑制量加到输出反馈控制量上，该时间依赖衰减抑制量在输出过冲期间定义。 或者，当输出不足时，包括时间依赖衰减抑制量的下冲抑制量被添加到输出反馈控制量，该时间依赖衰减抑制量被定义在输出下冲的期间。
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