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公开(公告)号：US20190222021A1
公开(公告)日：2019-07-18
申请号：US16360343
申请日：2019-03-21
发明人： Chao Zan , Qiming Tang , Guangrong Zhou , Jun Yan
摘要： An interface protection circuit and a device interface are disclosed. The interface protection circuit includes a capacitor and a transient voltage suppressor (TVS) transistor. A first end of the capacitor is connected to a connection port, a second end of the capacitor is connected to a first end of the TVS transistor and an interface chip, and a second end of the TVS transistor is grounded.
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公开(公告)号：US20180269678A1
公开(公告)日：2018-09-20
申请号：US15761971
申请日：2016-10-07
申请人： Hubbell Incorporated
发明人： Michael BANDEL , Donald HUVAERE
CPC分类号： H02H7/20 , H01C7/12 , H02H1/0007 , H02H3/00 , H02H3/202 , H02H3/22 , H02H9/04 , H02H9/045 , H05B33/0887 , Y02B20/341
摘要： Surge protective devices having surge protective and overvoltage protection capability are provided. In one example embodiment, the surge protective device can include a surge protection circuit. The surge protection device can include an overvoltage protection circuit coupled in series with the surge protection circuit. The overvoltage protection circuit can include a voltage sensing circuit associated with a voltage threshold, one or more switching elements, and/or a gating circuit coupled to the voltage sensing circuit. The gating circuit can be configured to control the one or more switching elements to be in a non-conducting state when the voltage sensing circuit detects a voltage that exceeds the voltage threshold.
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公开(公告)号：US10074974B2
公开(公告)日：2018-09-11
申请号：US14954327
申请日：2015-11-30
发明人： Dirk Prochaska
摘要： An arrangement for protecting an electrical facility from overvoltages having an overcurrent protection facility arranged in a first series circuit and a shunt circuit arranged between the overcurrent protection facility and the electrical facility to be protected, the shunt series resulting in a second series circuit, wherein a diode for discharging transient overvoltages is arranged in the shunt circuit, which is conductive if a voltage threshold is exceeded, as a result of which the current resulting from the overvoltage can be passed through the shunt circuit to the facility to be protected into the second shunt circuit, where a first inductor is arranged in a series connection to the diode, the diode is connected here to a first diode terminal on the first series circuit and is connected to a second diode terminal on the first inductor, and where the overcurrent protection facility is not triggered prematurely by temporary overvoltages.
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公开(公告)号：US20180205215A1
公开(公告)日：2018-07-19
申请号：US15581740
申请日：2017-04-28
发明人： CHIH-HENG SU , YANG-FAN SU
IPC分类号： H02H3/20
摘要： An undervoltage protection circuit and an overvoltage protection circuit include a first comparator and a second comparator. The first comparator has a first input terminal, a second input terminal, and a first output terminal. The second comparator has a third input terminal, a fourth input terminal, and a second output terminal. The third input terminal receives a reference voltage and the fourth input terminal receives a first feedback voltage. The first and the second output terminals are coupled with a logic device. The first feedback voltage is converted to a second feedback voltage by the delay circuit and the voltage level shifter. The first comparator outputs a detection enabling voltage for undervoltage/overvoltage detection when the first feedback voltage crosses the second feedback voltage. The logic device outputs a protection voltage level undervoltage/overvoltage protection when the first feedback voltage crosses the reference voltage.
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公开(公告)号：US20180183229A1
公开(公告)日：2018-06-28
申请号：US15735445
申请日：2015-06-12
申请人： ABB SCHWEIZ AG
摘要： A passive electronic fuse for protecting a DC application in the event of a fault includes a first leg including a first winding of a mutual inductor and a switch device connected in series, a second leg including a second winding of the mutual inductor. The first leg and the second leg are connected in parallel and a self-inductance of the second winding is lower than a self-inductance of the first winding. The second leg further includes a capacitor connected in series with the second winding of the mutual inductor, and the switch device is a thyristor or a switch device with switching properties of a thyristor.
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6.发明授权公开(公告)号：US09979181B2
公开(公告)日：2018-05-22
申请号：US15421328
申请日：2017-01-31
申请人： INTEL CORPORATION
发明人： Chee Hong Aw
IPC分类号： H02H9/04 , H02H3/20 , H03K3/0233 , H02H1/00
CPC分类号： H02H3/20 , H02H1/0007 , H02H3/202 , H03K3/02337
摘要： Described is an apparatus which comprises a pass-gate; and a control unit to control gate terminal of the pass-gate according to first availability of first or second power supplies, the control unit including: a voltage detector to detect the second power supply; and a supply switching circuit to generate a local supply for controlling the gate terminal of the pass-gate according to an output of the voltage detector.
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公开(公告)号：US09941692B2
公开(公告)日：2018-04-10
申请号：US14909000
申请日：2014-06-27
申请人： Robert Bosch GmbH
发明人： Gerhard Walter
IPC分类号： H02H7/06 , H02H7/08 , H02K11/00 , B60L3/00 , H02H9/04 , H02H3/20 , H02H5/10 , H02H3/36 , B60L3/12 , B60L11/02 , B60L11/14 , B60L11/18 , G01R31/02 , B60R16/03 , G01R31/00
CPC分类号： H02H9/045 , B60L3/0069 , B60L3/12 , B60L11/02 , B60L11/14 , B60L11/1868 , B60L2240/427 , B60R16/03 , G01R31/006 , G01R31/026 , H02H3/202 , H02H3/36 , H02H5/105 , H02H9/04 , Y02T10/642 , Y02T10/70 , Y02T10/7005 , Y02T10/7066 , Y02T10/7077
摘要： An overvoltage protection circuit for a first subsystem of a multivoltage vehicle electrical system, in which the first subsystem having a first vehicle electrical system voltage, a second subsystem having a second vehicle electrical system voltage, and an electric machine for supplying the second subsystem. The first system voltage is less than the second system voltage. The overvoltage protection circuit includes a first ground connection for connecting a shared ground potential of the first subsystem, the second subsystem, and the electric machine, an additional second ground connection for connecting a reference ground potential, and a control connection for controlling the electric machine. The overvoltage protection circuit checks whether a ground differential voltage between the first and second ground connections reaches a threshold value, and for reducing the second vehicle electrical system voltage when the ground differential voltage between the first and second ground connections reaches the threshold value.
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8.发明申请公开(公告)号：US20180012719A1
公开(公告)日：2018-01-11
申请号：US15590265
申请日：2017-05-09
发明人： Pascal HOUBRE , Patrick LARCHER
CPC分类号： H01H71/125 , G01R15/16 , G01R15/181 , H01H71/08 , H01H89/06 , H01H2071/124 , H01H2089/065 , H02H3/202
摘要： A module for the interconnection between an electrical circuit breaker and an electrical contactor includes a housing and multiple high-power electrical conductors that are housed inside the housing, each of the high-power electrical conductors being suitable for electrically connecting an electrical output of a circuit breaker to an electrical input of a contactor, in order to allow a supply electric current to flow from the circuit breaker to the contactor. This interconnection module additionally includes a voltage sensor, which sensor is suitable for detecting the presence of a voltage between at least two of the high-power electrical conductors.
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公开(公告)号：US09806521B2
公开(公告)日：2017-10-31
申请号：US14527205
申请日：2014-10-29
摘要： A balun includes an input coil and an output coil with first and second outputs that vary during normal operation. The output coil has a center point connection that remains substantially constant during normal operation. An ESD circuit provides a low impedance path between the center point connection and chip ground when the voltage at the center point connection is above a first threshold voltage or below a second threshold voltage and isolates the center point connection from chip ground otherwise. Another ESD protection circuit provides ESD protection for other input or output terminals of the integrated circuit by selectively coupling the other input or output terminals to chip ground. Thus, a charge that builds up between one of the balun outputs and another terminal on the integrated circuit can be safely dissipated.
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公开(公告)号：US20170294918A1
公开(公告)日：2017-10-12
申请号：US15094463
申请日：2016-04-08
CPC分类号： H03M1/124 , H02H3/087 , H02H3/0935 , H02H3/10 , H02H3/202 , H02H3/38 , H02H5/041 , H03M1/365
摘要： An embodiment electronic circuit includes an electronic switch comprising a load path, a first protection circuit configured to generate a first protection signal based on a current-time-characteristic of a load current through the load path of the electronic switch, and a drive circuit configured to drive the electronic switch based on the first protection signal. The first protection circuit includes an analog-to-digital converter (ADC) configured to receive an ADC input signal representing the load current, to sample the ADC input signal once in each of a plurality of successive sampling periods, and to output an ADC output signal that includes a sequence of values such that each of the values represents a respective sample of the ADC input signal. The ADC is configured to pseudo-randomly select a sample time in each sampling period.
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