利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

227 条记录 (耗时 0.025 秒)

    APPARATUS WITH LOAD DUMP PROTECTION
    1.
    发明申请
    APPARATUS WITH LOAD DUMP PROTECTION 审中-公开

    公开(公告)号：US20170358918A1

    公开(公告)日：2017-12-14

    申请号：US15176399

    申请日：2016-06-08

    申请人： ELITE SEMICONDUCTOR MEMORY TECHNOLOGY INC.

    发明人： Szu-chun TSAO

    IPC分类号： H02H3/22 ,  H02H1/00

    CPC分类号： H02H3/22 ,  H02H1/0007 ,  H02H3/20 ,  H02H7/067 ,  H02H7/0838 ,  H02H9/04

    摘要： An apparatus with load dump protection incorporates first and second half-bridge circuits, first and second comparators, and first and second clamping circuits. The first comparator compares a supply voltage with a first set voltage and generates a first comparison signal while the supply voltage exceeds the first set voltage. The second comparator compares the supply voltage with a second set voltage and generates a second comparison signal while the supply voltage exceeds the second set voltage. The first clamping circuit divides the supply voltage and provides a divided voltage to the first half-bridge circuit in response to the second comparison signal. The second clamping circuit divides the supply voltage and provides a divided voltage to the second half-bridge circuit in response to the second comparison signal.

    SAFETY CIRCUIT
    2.
    发明申请
    SAFETY CIRCUIT 审中-公开

    公开(公告)号：US20170344089A1

    公开(公告)日：2017-11-30

    申请号：US15462402

    申请日：2017-03-17

    申请人： NXP USA, Inc.

    发明人： Philippe MOUNIER ,  Eric Pierre ROLLAND ,  Guillaume FOUNAUD ,  Maxime CLAIRET

    IPC分类号： G06F1/30 ,  H02H1/00

    CPC分类号： G06F1/30 ,  G01R31/2851 ,  G05B9/02 ,  H02H1/0007 ,  H02H7/0838

    摘要： An integrated circuit comprising: an input terminal configured to receive a failure-event-signal representative of a failure event; a first output terminal configured to provide a first-failure-signal; and a second output terminal configured to provide a second-failure-signal; and a processing block configured to: set the first-failure-signal based on the failure-event-signal; and set the second-failure-signal, at a predetermined time interval after the first-failure-signal is set. The processing block further comprises a switch configured selectively, based on a received digital-error-signal to either: set the second-failure-signal based on a digital-counter-output-signal; or set the second-failure-signal based on an analogue-trigger-signal.

    MOTOR CONTROLLER
    4.
    发明申请
    MOTOR CONTROLLER 审中-公开

    公开(公告)号：US20170272013A1

    公开(公告)日：2017-09-21

    申请号：US15444504

    申请日：2017-02-28

    申请人： OMRON Corporation

    发明人： Takeshi KIRIBUCHI ,  Ryuichi JIMBO

    IPC分类号： H02P6/24 ,  H02P27/08 ,  H02P29/024

    CPC分类号： H02P6/24 ,  H02H7/0838 ,  H02H7/0844 ,  H02P27/08 ,  H02P29/024

    摘要： A motor controller includes an inverter configured to convert a direct current to an alternating current, a control unit that generates a PWM signal for driving the inverter in response to a motor drive command from an external device, and a safety circuit arranged between the inverter and the control unit. The inverter includes an upper switching element and a lower switching element. The safety circuit includes logic gates which are provided corresponding to the upper switching element and the lower switching element, respectively and each of which has two or more inputs to cut off the PWM signal based on a safety input signal.

    MOTOR DRIVE CIRCUITRY
    5.
    发明申请
    MOTOR DRIVE CIRCUITRY 审中-公开

    公开(公告)号：US20170264221A1

    公开(公告)日：2017-09-14

    申请号：US15510543

    申请日：2015-09-09

    申请人： TRW Limited

    发明人： Ian James Cash

    IPC分类号： H02P6/12 ,  H02H7/122 ,  B62D5/04 ,  H02H7/08

    CPC分类号： H02P6/12 ,  B62D5/0484 ,  B62D5/0487 ,  H02H7/0838 ,  H02H7/0844 ,  H02H7/1225

    摘要： A motor drive circuit for use in driving a motor having two or more phases comprising a motor bridge having, for each phase of the motor, a bridge arm comprising an upper switch and a lower switch that in normal operation may be opened and closed to modulate the voltage applied to the respective phases in response to drive signals from a motor control circuit, at least one solid state phase isolation relay that is provided in series in an electrical path connecting a respective phase of the motor to a respective bridge arm, the relay being closed in normal operation so that current can flow in the phase and is held open in a fault mode of operation to prevent the flow of current in the phase. The circuit also includes monitoring means for monitoring the current waveform in the phase to provide, at least in a fault mode of operation, an output indicative of when it is safe to open the SSPIR without causing damage due to the SSPIR due to an avalanche mode, and a control circuit that during normal operation applies a voltage to each device that is sufficient to hold the SSPIR closed and which, in the fault mode of operation, responds to the output of the monitoring means to reduce the voltage applied to each SSPIR to a level that causes the SSPIR to open at the safe time.

    Solid-state relay for running direction control of three-phase alternating current motor and method thereof
    7.
    发明授权
    Solid-state relay for running direction control of three-phase alternating current motor and method thereof 有权
    用于三相交流电动机运行方向控制的固态继电器及其方法

    公开(公告)号：US09559625B2

    公开(公告)日：2017-01-31

    申请号：US14396675

    申请日：2013-01-25

    申请人： KUDOM ELECTRONICS TECHNOLOGY (SHANGHAI) CO., LTD.

    发明人： Jiantao Yang ,  Zhiming Zeng ,  Fangzeng Chen

    IPC分类号： H02P23/00 ,  H02P23/24 ,  H02H7/09 ,  H02H7/08 ,  H02H7/122

    CPC分类号： H02P23/24 ,  H02H7/0838 ,  H02H7/09 ,  H02H7/1222 ,  H02H7/1225

    摘要： A solid state relay for controlling a three-phase AC motor running direction is provided, a driver module, power components module, phase sequence detection module, phase lack detection module, and automatic phase correction and phase lack protection logic module. The input of the phase sequence detection module is connected to the three-phase power supply, and the output is connected to the automatic phase correction and phase lack protection logic module, to provide phase sequence detection and a phase sequence signal to the automatic phase correction and phase lack protection logic module. The input of the phase lack detection module is connected to the three-phase power supply, and the output is connected to the automatic phase correction and phase lack protection logic module, to detect a lack of phase and provide the lacking phase signal to the automatic phase correction and phase lack protection logic module.

    摘要翻译： 提供用于控制三相交流电机运行方向的固态继电器，驱动模块，功率元件模块，相序检测模块，缺相检测模块，自动相位校正和缺相保护逻辑模块。 相序检测模块的输入连接到三相电源，输出端连接到自动相位校正和缺相保护逻辑模块，提供相序检测和相序信号到自动相位校正 和缺相保护逻辑模块。 相位缺失检测模块的输入端连接到三相电源，输出端连接到自动相位校正和缺相保护逻辑模块，以检测相位不足，并将缺相信号提供给自动 相位校正和缺相保护逻辑模块。

    System and Method for a Multi-Phase Snubber Circuit
    8.
    发明申请
    System and Method for a Multi-Phase Snubber Circuit 有权
    多相缓冲电路的系统和方法

    公开(公告)号：US20160336733A1

    公开(公告)日：2016-11-17

    申请号：US14709095

    申请日：2015-05-11

    申请人： Infineon Technologies AG

    发明人： Chao Li

    IPC分类号： H02H3/20 ,  H02P29/02 ,  H02P25/02

    CPC分类号： H02H3/20 ,  H02H7/0838 ,  H02M1/08 ,  H02M1/32 ,  H02M1/34 ,  H02M7/5387 ,  H02M2001/346 ,  H02M2001/348 ,  Y02B70/1491

    摘要： In accordance with an embodiment, a circuit includes a snubber circuit configured to be coupled to outputs of n half-bridge driver circuits that are coupled to n corresponding inductive loads, such that n is an integer greater than one. The snubber circuit includes n diodes and n capacitors. Each of the n diodes are coupled between a corresponding output of the n half-bridge driver circuits and a floating common node, and each of the n capacitors coupled between a corresponding output of the n half-bridge driver circuits and the floating common node.

    摘要翻译： 根据实施例，电路包括缓冲电路，其被配置为耦合到耦合到n个相应的感性负载的n个半桥驱动器电路的输出，使得n是大于1的整数。 缓冲电路包括n个二极管和n个电容器。 n个二极管中的每一个耦合在n个半桥驱动器电路的相应输出和浮动公共节点之间，并且n个电容器中的每一个耦合在n个半桥驱动器电路的对应输出和浮动公共节点之间。