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    DRIVER CIRCUIT FOR USE WITH INDUCTIVE LOADS OR THE LIKE
    1.
    发明专利
    DRIVER CIRCUIT FOR USE WITH INDUCTIVE LOADS OR THE LIKE 未知

    公开(公告)号：CA1179732A

    公开(公告)日：1984-12-18

    申请号：CA393684

    申请日：1982-01-07

    Applicant: MOTOROLA INC

    Inventor： LO CASCIO JAMES J ,  JARRETT ROBERT B

    IPC: H01F7/18 ,  H01H47/32 ,  H03K17/64 ,  G05F1/46 ,  G05F3/08 ,  G05F5/00

    Abstract: DRIVER CIRCUIT FOR USE WITH INDUCTIVE LOADS OR THE LIKE An integrated circuit is operative to produce an output current to a load and for switching the output current when a predetermined peak magnitude of load current is reached to a lower predetermined constant value. The circuit includes an internal power stage rendered conductive for producing maximum load current through the external load which is connected in series therewith in response to an internally generated reference current. The power stage comprises a multi-emitter power transistor with each emitter coupled to a respective emitter ballast resistor such that the load current through one of the resistors may be sensed and compared to the reference current to cause the magnitude of this reference current to be switched from a maximum value to a minimum value when the sensed current is representative of te peak magnitude value of current to thereby reduce the load current until the magnitude thereof is representative of the lower level of reference current.

    DRIVER CIRCUIT FOR USE WITH INDUCTIVE LOADS OR THE LIKE
    4.
    发明申请
    DRIVER CIRCUIT FOR USE WITH INDUCTIVE LOADS OR THE LIKE 审中-公开
    使用电感负载或类似的驱动电路

    公开(公告)号：WO1982002794A1

    公开(公告)日：1982-08-19

    申请号：PCT/US1982000006

    申请日：1982-01-04

    Applicant: MOTOROLA INC

    Inventor： MOTOROLA INC ,  LO CASCIO JAMES J ,  JARRETT ROBERT B

    IPC: H01H47/32

    CPC classification number: H03K17/64 ,  H01H47/325

    Abstract: A driver circuit for inductive load devices is desired which can provide multi-level current to the load, is T sL compatible, can be provided at a reduced component cost and has on chip thermal protection. A single monolithic integrated circuit (10) is provided to produce an output current to a load (14) and for switching the output current when a predetermined peak magnitude of load current is reached to a lower predetermined constant value. The circuit includes an internal power stage (18) rendered conductive for producing maximum load current through the external load which is connected in series therewith in response to an internally generated reference current. The power stage comprises a multi-emitter power transistor with each emitter coupled to a respective emitter ballast resistor such that the load current through one of the resistors (20) may be sensed and compared to the reference current to cause the magnitude of this reference current to be switched from a maximum value to a minimum value when the sensed current is representative of the peak magnitude value of current to thereby reduce the load current until the magnitude thereof is representative of the lower level of reference current. The integrated circuit is suitable for driving the solenoids of injector valves of a fuel injected system.

    Abstract translation: 需要用于感性负载装置的驱动电路，其可以向负载提供多电平电流，是兼容的，可以以降低的部件成本提供并具有片上热保护。 提供单个单片集成电路（10）以产生到负载（14）的输出电流，并且当负载电流的预定峰值幅度达到较低的预定常数值时切换输出电流。 该电路包括内部功率级（18），其被导通以响应于内部产生的参考电流而产生通过与其串联连接的外部负载的最大负载电流。 功率级包括多发射极功率晶体管，其中每个发射极耦合到相应的发射器镇流电阻器，使得可以感测通过电阻器（20）中的一个的负载电流并将其与参考电流进行比较，以引起该参考电流的幅度 当检测到的电流表示电流的峰值幅度值时，从最大值切换到最小值，从而减小负载电流，直到其大小表示较低的参考电流电平。 该集成电路适用于驱动燃料喷射系统的喷射阀的螺线管。

    DRIVER CIRCUIT FOR USE WITH INDUCTIVE LOADS OR THE LIKE.
    5.
    发明公开
    DRIVER CIRCUIT FOR USE WITH INDUCTIVE LOADS OR THE LIKE. 失效
    感性负载或类似的保质控制电路。

    公开(公告)号：EP0070873A4

    公开(公告)日：1985-07-30

    申请号：EP82900602

    申请日：1982-01-04

    Applicant: MOTOROLA INC

    Inventor： LO CASCIO JAMES J ,  JARRETT ROBERT B

    IPC: H01F7/18 ,  H01H47/32 ,  H03K17/64

    CPC classification number: H03K17/64 ,  H01H47/325

    Abstract: A driver circuit for inductive load devices is desired which can provide multi-level current to the load, is T sL compatible, can be provided at a reduced component cost and has on chip thermal protection. A single monolithic integrated circuit (10) is provided to produce an output current to a load (14) and for switching the output current when a predetermined peak magnitude of load current is reached to a lower predetermined constant value. The circuit includes an internal power stage (18) rendered conductive for producing maximum load current through the external load which is connected in series therewith in response to an internally generated reference current. The power stage comprises a multi-emitter power transistor with each emitter coupled to a respective emitter ballast resistor such that the load current through one of the resistors (20) may be sensed and compared to the reference current to cause the magnitude of this reference current to be switched from a maximum value to a minimum value when the sensed current is representative of the peak magnitude value of current to thereby reduce the load current until the magnitude thereof is representative of the lower level of reference current. The integrated circuit is suitable for driving the solenoids of injector valves of a fuel injected system.

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