Level shift circuit for controlling a driving circuit
    1.
    发明授权
    Level shift circuit for controlling a driving circuit 失效
    用于控制驱动电路的电平移位电路

    公开(公告)号:US5057721A

    公开(公告)日:1991-10-15

    申请号:US540269

    申请日:1990-06-19

    CPC分类号: G05F3/24

    摘要: The switching of the positive (or pullup power) and negative (or pulldown power) semiconductor elements, are controlled by driving circuits which are in turn controlled by level shift circuits which have a first current control circuit and a second current control circuit coupled in parallel and this parallel connection is coupled in series with the control N-channel MOSFET of a current mirror circuit in a circuit loop arrangement with a control power supply. The first and second current control circuits are responsive to first and second control pulses of pulse widths t.sub.1 and t.sub.1 +t.sub.2, in accordance with a driving signal such that the first current control circuit supplies a first current level to the control N-channel MOSFET during the first time period t.sub.1 and the second current control circuit supplies a second current level, smaller than that of the first current level, thereto for a predetermined time period t.sub.1 +t.sub.2 thereby resulting in a current flow through the controlled N-channel MOSFET of the current mirror circuit of a current value corresponding to the sum of the first and second current levels. The controlled N-channel MOSFET, providing ON/OFF control of a P channel MOSFET, is disposed in a second circuit loop which is powered by a high voltage power supply. This P-channel MOSFET, coupled to the high voltage power supply, supplies an output signal to a load in response to the current flowing through the controlled N-channel MOSFET.

    摘要翻译: 正(或上拉功率)和负(或下拉功率)半导体元件的切换由驱动电路控制,驱动电路又由具有并联耦合的第一电流控制电路和第二电流控制电路的电平移位电路控制 并联电路与电流反射镜电路的控制N沟道MOSFET串联,并与控制电源进行电路回路布置。 第一和第二电流控制电路根据驱动信号响应脉冲宽度t1和t1 + t2的第一和第二控制脉冲,使得第一电流控制电路在控制N沟道MOSFET期间向控制N沟道MOSFET提供第一电流电平 第一时间段t1和第二电流控制电路提供比第一电流电平小的第二电流电平达预定时间段t1 + t2,从而导致电流流过控制的N沟道MOSFET的电流 电流镜像电路,其电流值对应于第一和第二电流电平的和。 提供P沟道MOSFET的ON / OFF控制的受控N沟道MOSFET设置在由高压电源供电的第二电路回路中。 耦合到高压电源的P沟道MOSFET响应于流过受控N沟道MOSFET的电流向负载提供输出信号。

    Solid state current sensing circuit and protection circuit
    2.
    发明授权
    Solid state current sensing circuit and protection circuit 失效
    固态电流检测电路和保护电路

    公开(公告)号:US5008586A

    公开(公告)日:1991-04-16

    申请号:US302340

    申请日:1989-01-27

    CPC分类号: H03K17/0822 H03F1/523

    摘要: A current sensing circuit for sensing a main current flowing through a power semiconductor element or elements, by utilizing a second current which is small in magnitude compared to the main current and varies depending on the main current, and sensing the second current through a current mirror circuit as a bias current of a differential circuit, and a function of sensing the temperature of the semiconductor element being afforded to the current sensing circuit through selection of a bias voltage.

    摘要翻译: 一种用于感测流过功率半导体元件的主电流的电流感测电路,通过利用与主电流相比大小变化小的第二电流并根据主电流而变化,并且通过电流镜检测第二电流 电路作为差分电路的偏置电流,以及通过选择偏置电压来检测提供给电流感测电路的半导体元件的温度的功能。

    Driving circuit for a switching element including an improved power
supply arrangement
    3.
    发明授权
    Driving circuit for a switching element including an improved power supply arrangement 失效
    包括改进的电源装置的开关元件的驱动电路

    公开(公告)号:US5216349A

    公开(公告)日:1993-06-01

    申请号:US734127

    申请日:1991-07-25

    摘要: The switching of upper and lower switching elements is controlled by respective upper and lower arm driving circuits. Those switching elements are connected in series across a primary d.c. power source and their successive switching generates a drive voltage which is applied to a load. A secondary d.c. power source is connected to the lower arm driving circuit while the upper arm driving circuit is connected to a capacitor connected to the high potential side of the primary d.c. power source. The capacitor is charged from the secondary d.c. power source through a charging circuit. This driving arrangement is particularly applicable to multi-phase driving circuits.

    摘要翻译: 上下开关元件的切换由相应的上臂和下臂驱动电路控制。 那些开关元件串联连接在主要直流电源上。 电源及其连续切换产生施加到负载的驱动电压。 中学生 电源连接到下臂驱动电路,而上臂驱动电路连接到连接到初级直流电压的高电位侧的电容器。 能量源。 电容器从次级直流电充电。 电源通过充电电路。 该驱动装置特别适用于多相驱动电路。

    Inverter circuit
    4.
    发明授权
    Inverter circuit 失效
    逆变电路

    公开(公告)号:US5280228A

    公开(公告)日:1994-01-18

    申请号:US672410

    申请日:1991-03-20

    CPC分类号: H02M7/53875 H02H7/1227

    摘要: A three-phase bridge inverter for controlling a motor with a variable speed includes a drive circuit therefor and an overcurrent protection circuit on one integrated chip. The inverter IC can be operated by directly inputting a direct current obtained by rectifying commercial 100 V. Thus, the inverter chip reduces the size and the weight of a system, improves the usability, lowers the cost thereof and permits mass production fabrication. Also, the life of the IC is increased by detecting current flowing through the inverter and the temperature of the chip and stopping the operation, when an abnormality is found.

    摘要翻译: 用于控制具有可变速度的电动机的三相桥式逆变器包括其驱动电路和一个集成芯片上的过电流保护电路。 逆变器IC可以通过直接输入通过整流商用100V获得的直流电而进行操作。因此,逆变器芯片减小了系统的尺寸和重量,提高了可用性,降低了成本并允许批量生产制造。 此外,当发现异常时,通过检测流过逆变器的电流和芯片的温度以及停止操作来增加IC的寿命。

    Power supply control system
    7.
    发明授权
    Power supply control system 失效
    电源控制系统

    公开(公告)号:US5297015A

    公开(公告)日:1994-03-22

    申请号:US555025

    申请日:1990-07-20

    摘要: A power supply control system including a variable power converter for converting electric power from a power supply to a load into that of a specification required by the load in response to a power specification information source provided on the load side. With a change in the load, the information source also changes, thereby providing a flexible power supply control system capable of meeting different loads. For applications to a high power supply, the system comprises a plurality of variable power converters adapted to operate selectively in accordance with requisite power information sources provided in or on the side of a plurality of loads, thereby providing a system realizing a flexible power supply. For application to a low power supply, the system comprises a plug having a power specification information source and a socket having a variable power converter.

    摘要翻译: 一种电源控制系统,其包括用于响应于设置在负载侧的电力指定信息源将电力从电源转换为负载的可变功率转换器,用于负载所要求的规格。 随着负载的变化,信息源也发生变化,从而提供能够满足不同负载的灵活的电源控制系统。 对于高电源的应用,系统包括多个可变功率转换器,其适于根据在多个负载中或其侧面设置的必需功率信息源选择性地进行操作,从而提供实现柔性电源的系统。 为了适用于低电源,该系统包括具有电力指定信息源的插头和具有可变功率转换器的插座。

    Monolithic integrated circuit device
    8.
    发明授权
    Monolithic integrated circuit device 失效
    单片集成电路器件

    公开(公告)号:US4890009A

    公开(公告)日:1989-12-26

    申请号:US185398

    申请日:1988-04-25

    摘要: A monolithic integrated circuit device comprises first and second output terminals, a power switching circuit which is connected across the first and second output terminals and through which electric current is supplied to an external load from an external power source, a driving a circuit for generating a first drive signal to be supplied to the power switching circuit, and a third output terminal in electrical connection with the driving circuit for derivation of electric energy from the driving circuit as a second drive signal to be spplied to an external circuit via the third output terminal. The monolithic integrated circuit device is capable of not only controlling power supply to an external load but also driving an external circuit which may be another power switching cirtcuit cooperative with the power switching circuit in the present monolithic integrated circuit device for the purpose of controlled power supply to the external load or which may be other types of electronic circuits.

    Capacitive voltage lowering circuit with dual outputs
    9.
    发明授权
    Capacitive voltage lowering circuit with dual outputs 失效
    具有双输出的电容降压电路

    公开(公告)号:US4841427A

    公开(公告)日:1989-06-20

    申请号:US213134

    申请日:1988-06-29

    IPC分类号: H02M3/07

    CPC分类号: H02M3/07 H02M2001/009

    摘要: A power supply circuit comprises first charge storing means, second and third charge storing means supplying their charged voltages so as to be used as sources of predetermined voltages applied to associated loads respectively, switch means capable of selectively establishing at least a first mode and a second mode so that, in the first mode, the first and second charge storing means are connected in series with a d.c. power source to be charged by a power supply voltage, while, in the second mode, the first charge storing means is electrically isolated from the d.c. power source and the second charge storing means, and the third charge storing means is connected to the first charge storing means in a closed circuit to be charged by the charges stored in the first charge storing means, and a drive circuit driving the switch means so that the switch means repeats an operation cycle including at least the first mode and the second mode executed in that order.

    Inverter
    10.
    发明授权
    Inverter 失效
    逆变器

    公开(公告)号:US5216587A

    公开(公告)日:1993-06-01

    申请号:US862363

    申请日:1992-04-02

    IPC分类号: H02M7/48

    CPC分类号: H02M1/32 H02M7/538

    摘要: An inverter includes first, second, and third dc voltage sources, first and second switching elements which are connected in series to the first dc voltage source, a signal generator section for producing first and second control signals on the basis of the output voltage from the third dc voltage source, first and second signal level converter sections for converting voltage levels of the first and second control signals based on the output voltage from the second dc voltage source and thereby respectively generating first and second output signals, and first and second driver sections responsive to the first and second output signals for supplying the first and second switching element with first and second driving signals on the basis of the output voltage from the second dc voltage source and thereby respectively turning the first and second switching elements on or off. At least either one of the first and second signal level converter sections includes a turn-off section responsive when at least either one of the output voltages respectively from the second and third dc voltage sources is lower than a predetermined voltage level for turning the first or second switching element off irrespective of the first and second control signals.

    摘要翻译: 逆变器包括第一,第二和第三直流电压源,与第一直流电压源串联连接的第一和第二开关元件,信号发生器部分,用于根据来自第一直流电压源的输出电压产生第一和第二控制信号 第三直流电压源,第一和第二信号电平转换器部分,用于基于来自第二直流电压源的输出电压转换第一和第二控制信号的电压电平,从而分别产生第一和第二输出信号,以及第一和第二驱动器部分 响应于第一和第二输出信号,用于基于来自第二直流电压源的输出电压向第一和第二开关元件提供第一和第二驱动信号,从而分别使第一和第二开关元件接通或断开。 第一和第二信号电平转换器部分中的至少一个包括关断部分,当分别来自第二和第三直流电压源的输出电压中的至少一个低于用于转动第一或第二直流电压源的预定电压电平时, 第二开关元件关闭,而与第一和第二控制信号无关。