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    Laboratory equipment with flammable refrigerant
    1.
    发明授权
    Laboratory equipment with flammable refrigerant 有权

    公开(公告)号：US11909398B2

    公开(公告)日：2024-02-20

    申请号：US17993327

    申请日：2022-11-23

    申请人： Eppendorf SE

    发明人： Uwe Beukert ,  Falk Binder

    IPC分类号： G01R31/327 ,  H03K3/2893 ,  B01L7/00 ,  H01H43/02 ,  H03K17/06

    CPC分类号： H03K3/2893 ,  B01L7/00 ,  G01R31/327 ,  H01H43/02 ,  H03K17/06 ,  B01L2300/1894

    摘要： Laboratory equipment with flammable refrigerant and connected to at least two different electrical potentials for supplying the equipment with electrical energy. An electrical switch arrangement has first and second switches for electrical separation from, respectively, the first and second potentials. A sequence controller switches on the first switch and thereafter the second switch. A monitoring device is connected via a first contact on the equipment side to the first switch and via a second contact on the mains side to an electrical potential other than the first electrical potential for detecting a switched-on state of the first switch and signaling the detection to the sequence controller. When the monitoring device signals a switched-on state, the sequence controller blocks operation of the equipment as a function of the signaled switched-on state and whether the first switch is expected to be switched on or switched off.

    SWITCH ARRANGEMENT FOR A CONVERTER
    2.
    发明公开
    SWITCH ARRANGEMENT FOR A CONVERTER 审中-公开

    公开(公告)号：US20230318593A1

    公开(公告)日：2023-10-05

    申请号：US18316349

    申请日：2023-05-12

    申请人： HUAWEI TECHNOLOGIES CO., LTD.

    发明人： Piniwan Thiwanka Bandara WIJEKOON ,  Anatolii TCAI

    IPC分类号： H03K17/041 ,  H03K17/06 ,  H03K17/66

    CPC分类号： H03K17/04113 ,  H03K17/06 ,  H03K17/66

    摘要： The disclosure relates to a switch arrangement for a converter, comprises: a first series connection of at least two switches between two terminals of the switch arrangement, wherein the two switches are semiconductor switches; a second series connection of a first capacitor and a first diode circuit electrically connected in parallel to first part of the first series connection between a first terminal of the two terminals and node between the two switches, wherein the first diode circuit comprises at least one diode; and third series connection of a second capacitor and a second diode circuit electrically connected in parallel to a second part of the first series connection between second terminal of the two terminals and the node between the two switches, wherein the second diode circuit comprises at least one diode. Further a method for switching such a switch arrangement between the conducting state and the non-conducting state.

    Configurable Clamp Circuit
    4.
    发明申请
    Configurable Clamp Circuit 审中-公开

    公开(公告)号：US20180115311A1

    公开(公告)日：2018-04-26

    申请号：US15332873

    申请日：2016-10-24

    申请人： Infineon Technologies Austria AG

    发明人： Karl Norling ,  Erwin Huber

    IPC分类号： H03K17/16 ,  H03K5/08 ,  H03K17/687 ,  G05F3/02

    CPC分类号： H03K17/168 ,  G05F3/02 ,  H03K5/08 ,  H03K17/06 ,  H03K17/6872 ,  H03K2017/066

    摘要： In accordance with an embodiment of the present invention, a circuit includes a configurable clamp driver circuit for clamping a voltage at a gate terminal of a transistor below a turn-on voltage threshold upon switch-off of the transistor. In a first clamp driver circuit mode, an output terminal of the clamp driver circuit is configured to be coupled to the gate terminal of the transistor to provide a first discharge path from the gate terminal of the transistor upon switch-off of the transistor. In a second clamp driver circuit mode, the output terminal of the clamp driver circuit is configured to be coupled to an input terminal of a clamp circuit, wherein the clamp circuit is coupled to the gate terminal of the transistor to provide a second discharge path from the gate terminal of the transistor upon switch-off of the transistor.

    Circuit and Method for Controlling Charge Injection in Radio Frequency Switches
    8.
    发明申请
    Circuit and Method for Controlling Charge Injection in Radio Frequency Switches 有权

    公开(公告)号：US20160226478A1

    公开(公告)日：2016-08-04

    申请号：US14987360

    申请日：2016-01-04

    申请人： Peregrine Semiconductor Corporation

    发明人： Alexander Dribinsky ,  Tae Youn Kim ,  Dylan J. Kelly ,  Christopher N. Brindle

    IPC分类号： H03K17/16 ,  H03K17/687

    CPC分类号： H03K17/161 ,  H03K17/04 ,  H03K17/06 ,  H03K17/08 ,  H03K17/102 ,  H03K17/284 ,  H03K17/6874 ,  H03K17/689 ,  H03K2217/0009

    摘要： A circuit and method for controlling charge injection in a circuit are disclosed. In one embodiment, the circuit and method are employed in a semiconductor-on-insulator (SOI) Radio Frequency (RF) switch. In one embodiment, an SOI RF switch comprises a plurality of switching transistors coupled in series, referred to as “stacked” transistors, and implemented as a monolithic integrated circuit on an SOI substrate. Charge injection control elements are coupled to receive injected charge from resistively-isolated nodes located between the switching transistors, and to convey the injected charge to at least one node that is not resistively-isolated. In one embodiment, the charge injection control elements comprise resistors. In another embodiment, the charge injection control elements comprise transistors. A method for controlling charge injection in a switch circuit is disclosed whereby injected charge is generated at resistively-isolated nodes between series coupled switching transistors, and the injected charge is conveyed to at least one node of the switch circuit that is not resistively-isolated.

    A GATE DRIVE CIRCUIT AND A METHOD FOR SETTING UP A GATE DRIVE CIRCUIT
    9.
    发明申请
    A GATE DRIVE CIRCUIT AND A METHOD FOR SETTING UP A GATE DRIVE CIRCUIT 有权
    门控驱动电路和用于设置门控驱动电路的方法

    公开(公告)号：US20160149569A1

    公开(公告)日：2016-05-26

    申请号：US14899506

    申请日：2013-07-04

    申请人： Thierry SICARD ,  Philippe PERRUCHOUD

    发明人： THIERRY SICARD ,  PHILIPPE PERRUCHOUD

    IPC分类号： H03K17/567

    CPC分类号： H03K17/567 ,  H02M7/5387 ,  H03K17/06

    摘要： A gate drive circuit includes a first switch and a first capacitor. A first terminal of the first capacitor is electrically coupled to the first switch. The first switch is electrically coupled between the first terminal and a voltage supply of the power transistor. A second terminal of the first capacitor is electrically coupled to the reference potential. The gate drive circuit further includes a first voltage limiter in parallel with the first capacitor. The first voltage limiter limits a voltage across the first capacitor to a first predetermined voltage. The gate drive circuit further includes a second capacitor, a pre-charging circuit arranged between the first terminal of the first capacitor and a first terminal of the second capacitor. The gate drive circuit further includes a third capacitor with a first terminal electrically coupled to a second terminal of the second capacitor and a second terminal electrically coupled to a gate terminal of the power transistor.

    摘要翻译： 栅极驱动电路包括第一开关和第一电容器。 第一电容器的第一端子电耦合到第一开关。 第一开关电耦合在第一端子和功率晶体管的电压源之间。 第一电容器的第二端子电耦合到参考电位。 栅极驱动电路还包括与第一电容器并联的第一限压器。 第一限压器将第一电容器两端的电压限制到第一预定电压。 栅极驱动电路还包括第二电容器，布置在第一电容器的第一端子和第二电容器的第一端子之间的预充电电路。 栅极驱动电路还包括具有电耦合到第二电容器的第二端子的第一端子的第三电容器和电耦合到功率晶体管的栅极端子的第二端子。

    Drive unit for switching element
    10.
    发明授权
    Drive unit for switching element 有权
    开关元件驱动单元

    公开(公告)号：US09172367B2

    公开(公告)日：2015-10-27

    申请号：US13892829

    申请日：2013-05-13

    申请人： DENSO CORPORATION

    发明人： Junichi Fukuta ,  Tsuneo Maebara ,  Ryotaro Miura ,  Takeyasu Komatsu

    IPC分类号： H02P6/08 ,  H02M1/08 ,  H03K17/30 ,  H03K17/06

    CPC分类号： H03K17/30 ,  H03K17/06 ,  H03K2017/066

    摘要： In a drive unit for a switching element, a drive circuit changes the switching element between an on-state and an off-state, by controlling a potential difference between a reference terminal, which is one of a pair of ends of a current path of the switching element, and an opening-closing control terminal of the switching element. A determination section determines, if an on-operation command or an off-operation command is inputted as an operation signal for the switching element, whether or not the potential difference has reached a specific value toward which the potential difference shifts, in response to one of the operation commands, with respect to a threshold value by which the switching element is turned on. A forcible processing section removes charge for turning on the switching element from the opening-closing control terminal, if the determination section determines that the potential difference has not reached the specific value.

    摘要翻译： 在用于开关元件的驱动单元中，驱动电路通过控制参考端子之间的电位差来控制开关元件的导通状态和截止状态之间的电位差， 开关元件和开关元件的开闭控制端子。 确定部分确定如果输入操作命令或关闭操作命令作为开关元件的操作信号，则响应于一个电位差，电位差是否达到电位差移动的特定值 关于开关元件导通的阈值的操作命令。 如果确定部分确定电位差未达到特定值，则强制处理部分去除从开闭控制端子接通开关元件的电荷。