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    GATE DRIVE USING CONTINUOUS ALTERNATING POWER
    1.
    发明申请
    GATE DRIVE USING CONTINUOUS ALTERNATING POWER 审中-公开
    使用连续替代功率的门控驱动

    公开(公告)号：WO1995030278A1

    公开(公告)日：1995-11-09

    申请号：PCT/US1995004500

    申请日：1995-04-17

    Applicant: SUNDSTRAND CORPORATION

    Inventor： SUNDSTRAND CORPORATION ,  NUECHTERLEIN, Paul, E.

    IPC: H03K17/687

    CPC classification number: H03K17/04123 ,  H03K17/567 ,  H03K17/691

    Abstract: A gate drive circuit for a power switching device (47) comprises an H-bridge rectifier having four rectifiers (38, 40, 42, 44), the anodes of the first and second rectifiers (38, 40) being mutually coupled at a midpoint to the cathodes of the third and fourth rectifiers (42, 44). This midpoint is coupled to a gate terminal of the power switching device (47). A continuous alternating waveform generator (10) is coupled to output selection control logic (12) which applies the waveform to either a first transformer (32a, 32b), whose secondary side is coupled to the anodes of the third and fourth rectifiers (42, 44) to turn the power switching device (47) on, or to a second transformer (34a, 34b), whose secondary side is coupled to the cathodes of the first and second rectifiers (38, 40) to turn the power switching device (47) off.

    Abstract translation: 用于功率开关器件（47）的栅极驱动电路包括具有四个整流器（38,40,42,44）的H桥整流器，第一和第二整流器（38,40）的阳极在中点处相互耦合 连接到第三和第四整流器（42,44）的阴极。 该中点耦合到电力开关装置（47）的栅极端子。 连续交替波形发生器（10）耦合到输出选择控制逻辑（12），该选择控制逻辑（12）将波形施加到第二变压器（32a，32b），第二变压器的次级侧耦合到第三和第四整流器 44）将电源开关装置（47）接通或将其二次侧耦合到第一和第二整流器（38,40）的阴极的第二变压器（34a，34b），以转动电力开关装置 47）关闭。

    GATE DRIVE CIRCUIT FOR POWER TRANSISTOR
    3.
    发明申请
    GATE DRIVE CIRCUIT FOR POWER TRANSISTOR 审中-公开
    功率晶体管的门极驱动电路

    公开(公告)号：WO1990013178A1

    公开(公告)日：1990-11-01

    申请号：PCT/US1990001258

    申请日：1990-03-06

    Applicant: SUNDSTRAND CORPORATION

    Inventor： SUNDSTRAND CORPORATION ,  NUECHTERLEIN, Paul, E.

    IPC: H03K17/687

    CPC classification number: H03K17/691

    Abstract: The problem of reliability in gate drive circuits is resolved with an isolated gate drive circuit (10) for a power transistor (12) gated in response to the presence of a control signal. The drive circuit (10) includes a transformer (18) having a primary winding (22) and a secondary winding (24, 26). A switch (S) is coupled in series with the transformer primary winding (22) and a source (30) of power for receiving the control signal and connecting the power source (30) across the primary winding (22) responsive thereto. A first control switch (Q1) is coupled to the secondary winding (24, 26) and the power transistor (12) for controlling a conducting state of the power transistor (12) responsive to the presence of the control signal. A second control switch (Q2) is coupled to the transformer secondary winding (24, 26) and to the power transistor (12) for controlling a non-conducting state of the power transistor (12) virtually instantly upon removal of the control signal. A rectifier circuit (34) is coupled to the first and second control switches (Q1, Q2) for preventing operation of the first control switch (Q1) if the second control switch (Q2) is unable to control the non-conducting state of the power transistor (12).

    Abstract translation: 栅极驱动电路的可靠性问题通过用于响应于存在控制信号而选通的功率晶体管（12）的隔离栅极驱动电路（10）来解决。 驱动电路（10）包括具有初级绕组（22）和次级绕组（24,26）的变压器（18）。 开关（S）与变压器初级绕组（22）和用于接收控制信号的电源（30）串联耦合，并响应于此而将电源（30）连接在初级绕组（22）上。 第一控制开关（Q1）耦合到次级绕组（24,26）和功率晶体管（12），用于响应于控制信号的存在来控制功率晶体管（12）的导通状态。 第二控制开关（Q2）耦合到变压器次级绕组（24,26）和功率晶体管（12），用于在去除控制信号时实际上立即控制功率晶体管（12）的不导通状态。 如果第二控制开关（Q2）不能控制第一控制开关（Q1）的不导通状态，则整流电路（34）耦合到第一和第二控制开关（Q1，Q2），以防止第一控制开关 功率晶体管（12）。

    DC-LINK RIPPLE REDUCTION CIRCUIT
    4.
    发明申请
    DC-LINK RIPPLE REDUCTION CIRCUIT 审中-公开
    直流链路纹波减少电路

    公开(公告)号：WO1991009454A1

    公开(公告)日：1991-06-27

    申请号：PCT/US1990006553

    申请日：1990-11-08

    Applicant: SUNDSTRAND CORPORATION

    Inventor： SUNDSTRAND CORPORATION ,  NUECHTERLEIN, Paul, E.

    IPC: H02M01/14

    CPC classification number: H02M1/15

    Abstract: Prior attempts to remove ripple from DC power carried on DC conductors have utilized large and bulky filters which undesirably add size and weight. In order to overcome this problem, a ripple reduction circuit (30) includes a controllable switch (Q1) whereby the impedance (R2) and the switch (Q1) are coupled between first and second DC conductors (26A, 26B) and gating circuitry (40) coupled between one of the conductors and a control electrode (36) of the controllable switch (Q1) for closing the switch (Q1) when AC ripple power is carried by the conductors (26A, 26B) whereby at least a portion of the AC ripple power is removed from the conductors (26A, 26B) and delivered to the impedance (R2).

    Abstract translation: 在直流导体上携带的直流电源中去除纹波的先前尝试已经使用了大而笨重的滤波器，这不利地增加了尺寸和重量。 为了解决这个问题，纹波降低电路（30）包括可控开关（Q1），由此阻抗（R2）和开关（Q1）耦合在第一和第二DC导体（26A，26B）和门控电路 40），其耦合在所述导体之一和所述可控开关（Q1）的控制电极（36）之间，用于当由所述导体（26A，26B）承载AC纹波功率时闭合所述开关（Q1），由此至少一部分所述导体 AC纹波功率从导体（26A，26B）移除并传送到阻抗（R2）。

    LOSSLESS SNUBBER CIRCUIT
    5.
    发明申请
    LOSSLESS SNUBBER CIRCUIT 审中-公开
    无锡SNUBBER电路

    公开(公告)号：WO1991009439A1

    公开(公告)日：1991-06-27

    申请号：PCT/US1990006562

    申请日：1990-11-08

    Applicant: SUNDSTRAND CORPORATION

    Inventor： SUNDSTRAND CORPORATION ,  NUECHTERLEIN, Paul, E.

    IPC: H02H07/122

    CPC classification number: H02M1/38

    Abstract: A snubber circuit for a power switch (Q1) includes a capacitor (C1) coupled across main current path electrodes of the switch, an inductor (L) having a first end coupled to one of the main current path electrodes of the power switch and a second end and a controllable switch (QA) having a first main current path electrode coupled to the second end of the inductor, a second main current path electrode of the power switch and a control electrode. A control circuit (40) is coupled to the power switch and the controllable switch and turns on the controllable switch when a gating signal is commanding turn-on of the power switch and the voltage across the main current path electrodes of the power switch is above a certain level so that the capacitor is discharged through the inductor at such time. The control circuit subsequently turns off the controllable switch and turns on the power switch while the gating signal is commanding turn-on of the latter switch when the voltage across the main current path electrodes thereof falls below the certain level.

    GATE DRIVE USING CONTINUOUS ALTERNATING POWER
    7.
    发明公开
    GATE DRIVE USING CONTINUOUS ALTERNATING POWER 失效
    连续使用阿克·桑塔德控制引线DRIVER

    公开(公告)号：EP0757860A1

    公开(公告)日：1997-02-12

    申请号：EP95916337.0

    申请日：1995-04-17

    Applicant: SUNDSTRAND CORPORATION

    Inventor： NUECHTERLEIN, Paul, E.

    IPC: H03K17

    CPC classification number: H03K17/04123 ,  H03K17/567 ,  H03K17/691

    Abstract: A gate drive circuit for a power switching device (47) comprises an H-bridge rectifier having four rectifiers (38, 40, 42, 44), the anodes of the first and second rectifiers (38, 40) being mutually coupled at a midpoint to the cathodes of the third and fourth rectifiers (42, 44). This midpoint is coupled to a gate terminal of the power switching device (47). A continuous alternating waveform generator (10) is coupled to output selection control logic (12) which applies the waveform to either a first transformer (32a, 32b), whose secondary side is coupled to the anodes of the third and fourth rectifiers (42, 44) to turn the power switching device (47) on, or to a second transformer (34a, 34b), whose secondary side is coupled to the cathodes of the first and second rectifiers (38, 40) to turn the power switching device (47) off.

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