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公开(公告)号：US12051876B2
公开(公告)日：2024-07-30
申请号：US17020875
申请日：2020-09-15
Inventor： Andrew James Howlett , Gordon Russell
IPC: G06F1/32 , G06F1/3231 , G06F1/3296 , H01R13/66 , H02H3/20 , H02H9/04 , H04M19/00
CPC classification number: H01R13/6683 , G06F1/3231 , G06F1/3296 , H01R13/6666 , H01R13/6675 , H01R13/6691 , H02H3/202 , H02H9/04 , H04M19/00 , H01R2201/06
Abstract: This application relates to monitoring of electronic devices (100) and in particular to methods and apparatus for the detection and recording of an electrical overstress applied to a connector (101, 102) of the device. The apparatus describes an integrated circuit (103, 105) of the host device having a first set of one or more circuit contacts (201, 203, 204, 205) for connection to a connector (101) of a host electronic device. The circuit has an electrical overstress monitor (106, 106a) for detecting and recording an electrical overstress comprising a voltage exceeding a predetermined parameter applied to at least one of said first set of circuit contacts. The electrical overstress monitor (106) may have an overvoltage detector (205) and may have a memory (206) for recording the occurrence of an overvoltage and/or a communication module (207) for communicating with other components of the host device in the event of an electrical overstress.
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公开(公告)号：US20240204513A1
公开(公告)日：2024-06-20
申请号：US18538148
申请日：2023-12-13
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Marcos A. Donolo , Anushka M. Dissanayake , Pallavi Kulkarni , Jay Hartshorn
Abstract: A system for high impedance bus protection that includes a safety module to divert excess current away from a protective element of an intelligent electronic device. The safety module may include a variable resistor and a bypass relay in parallel across secondaries of one or more current transformers. The bypass relay may be configured to close upon detection of excess current through the secondaries to divert the excess current away from the variable resistor and the protective element.
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公开(公告)号：US20240106228A1
公开(公告)日：2024-03-28
申请号：US18530011
申请日：2023-12-05
Applicant: Rohm Co., Ltd.
Inventor： Kenichi OKAJIMA
IPC: H02H7/12 , G05F1/571 , G05F1/575 , G05F1/595 , H02H1/00 , H02H3/20 , H02M1/088 , H02M1/36 , H02M3/158
CPC classification number: H02H7/1213 , G05F1/571 , G05F1/575 , G05F1/595 , H02H1/0007 , H02H3/202 , H02M1/088 , H02M1/36 , H02M3/158 , G05F1/569
Abstract: A power control device includes: an output voltage controller configured to control an output voltage based on a feedback voltage corresponding to the output voltage; and an overvoltage protector configured to continue or stop the operation of the output voltage controller based on a first detection result of whether the output voltage has exceeded an output voltage threshold value and a second detection result of whether the feedback voltage has fallen to or below a feedback voltage threshold value.
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公开(公告)号：US11908529B2
公开(公告)日：2024-02-20
申请号：US17579246
申请日：2022-01-19
Applicant: Western Digital Technologies, Inc.
Inventor： Daniel J. Linnen , Kirubakaran Periyannan , Khanfer A. Kukkady
Abstract: A data storage device includes a power supply circuit configured to supply power to the data storage device. The power supply circuit includes a voltage clamp configured to operate in a conduction state in response to an over-voltage condition of the power supply circuit. The power supply circuit also includes a fuse in series with the voltage clamp. The fuse is configured to open in response to a current flow through the fuse and the voltage clamp exceeding a threshold value. The power supply circuit also includes a switching device that is configured to latch in a forward conduction mode in response to the voltage clamp operating in the conduction state. The switching device couples power from a positive voltage bus to the voltage clamp when the switching device is in the forward conduction mode.
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公开(公告)号：US11876366B2
公开(公告)日：2024-01-16
申请号：US18062980
申请日：2022-12-07
Applicant: STMicroelectronics (Alps) SAS
Inventor： Michel Bouche
Abstract: An embodiment of the present disclosure relates to an electronic circuit including a first switch coupling a first node of the circuit to an input/output terminal of the circuit; a second switch coupling the first node to a second node of application of a fixed potential; and a high-pass filter having an input coupled to the terminal and an output coupled to a control terminal of the second switch.
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Patent Agency Ranking
6.发明公开公开(公告)号：US20230246435A1
公开(公告)日：2023-08-03
申请号：US18132062
申请日：2023-04-07
Applicant: Eaton Intelligent Power Limited
Inventor： Huaqiang Li , Seth O'Brien , Thomas M. Ruchti
CPC classification number: H02H7/0833 , H02M7/2173 , H02M1/08 , H02H3/202 , H02M5/4585 , H02H7/125 , H02H7/1216 , H02M1/32
Abstract: A power conversion circuit having a solid-state circuit breaker integrated therein is disclosed. With a disconnect switch between a utility source and the power conversion apparatus described for meeting UL489, the power conversion circuit includes an input connectable to an AC source, a rectifier circuit connected to the input to convert an AC power input to a DC power, and a DC link coupled to the rectifier circuit to receive the DC power therefrom. The rectifier circuit comprises a plurality of phase legs each including thereon an upper switching unit and a lower switching unit, wherein at least one of the upper and lower switching units on each phase leg comprises a bi-directional switching unit that selectively controls current and withstands voltage in both directions, so as to provide a circuit breaking capability that selectively interrupts current flow through the rectifier circuit, while maintaining original power conversion functionalities.
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公开(公告)号：US11664664B2
公开(公告)日：2023-05-30
申请号：US17306217
申请日：2021-05-03
Applicant: Edward Allan Wulfekuhle
Inventor： Edward Allan Wulfekuhle
IPC: H02H3/02 , H02J3/38 , H02S99/00 , G01R31/327 , H02H3/20 , G01R21/00 , H02H1/00 , H02J3/12 , G01R21/133 , H02H3/08 , G01R22/06 , H02J13/00
CPC classification number: H02J3/381 , G01R21/007 , G01R31/327 , H02H1/0007 , H02H3/025 , H02H3/202 , H02J3/12 , H02S99/00 , G01R21/1333 , G01R22/063 , H02H3/08 , H02J13/00002 , H02J2300/24
Abstract: A system is disclosed which eliminates problems caused by surges of electric energy which is generated on a utility customer's property and which is fed back onto a utility-owned service line by maintaining a minimum utility provided percentage (MUPP) of power being provided onto a customer-owned dead-end service line. Where the electric energy generated by a utility customer is incrementally excluded from the customer-owned dead-end service line through a plurality of contactors which are controlled by a 120 volt command line.
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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
Applicant: Huawei Technologies Co., Ltd.
Inventor： Chao Zan , Qiming Tang , Guangrong Zhou , Jun Yan
Abstract: 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
Applicant: Hubbell Incorporated
Inventor： Michael BANDEL , Donald HUVAERE
CPC classification number: H02H7/20 , H01C7/12 , H02H1/0007 , H02H3/00 , H02H3/202 , H02H3/22 , H02H9/04 , H02H9/045 , H05B33/0887 , Y02B20/341
Abstract: 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
Applicant: Siemens Aktiengesellschaft
Inventor： Dirk Prochaska
Abstract: 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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