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    • 1. 发明授权
    • Circuit for the controlled recycle without oscillation of a discharge
current from an inductive load
    • 用于受控循环的电路,不受来自感性负载的放电电流的振荡
    • US5917254A
    • 1999-06-29
    • US840328
    • 1997-04-28
    • Sergio LecceMassimo GrassoGiorgio Rossi
    • Sergio LecceMassimo GrassoGiorgio Rossi
    • H03K17/082H03K17/16H01H47/00
    • H03K17/162H03K17/0822Y10T307/74Y10T307/826Y10T307/858Y10T307/865
    • A circuit for the controlled recycle without oscillation of a discharge current from an inductive load. The circuit comprises an active element connected, in series with the inductive load, between first and second power supply terminals, and having a control terminal to which a driver circuit is connected. The circuit further includes a recycling regulating circuitry connected to a connection node between the active element and the inductive load, and sensitive to a voltage threshold at the connection node to generate, depending on attainment of that threshold, a power-on signal for application to the control terminal effective to start up recycling of the discharge current through the active element. The circuit further comprises a control circuit for controlling the voltage oscillation at the connection node at the end of the recycling. The control circuit includes a circuit having a relatively low resistive impedance and being selectively connectable, at least upon the active element being turned off at the end of the recycling, between the connection node and a node having a substantially zero impedance toward at least one of the first and second power supply terminals.
    • 用于受控循环的电路,不受来自感性负载的放电电流的振荡。 该电路包括与第一和第二电源端子之间与感性负载串联连接的有源元件,并且具有连接有驱动器电路的控制端子。 电路还包括连接到有源元件和感性负载之间的连接节点的再循环调节电路,并且对于连接节点处的电压阈值敏感,以根据达到该阈值产生用于应用于 控制终端有效启动通过有源元件的放电电流的再循环。 电路还包括用于控制在再循环结束时在连接节点处的电压振荡的控制电路。 所述控制电路包括具有相对较低电阻阻抗的电路,至少在所述有源元件在所述再循环结束时被截止时,所述电路具有相对较低的电阻阻抗,并且可在所述连接节点与具有基本零阻抗的节点之间至少一个 第一和第二电源端子。
    • 7. 发明授权
    • Current generator circuit having a wide frequency response
    • 电流发生器电路具有较宽的频率响应
    • US6072359A
    • 2000-06-06
    • US108081
    • 1998-06-30
    • Davide BrambillaDaniela NebuloniGiorgio RossiSergio Lecce
    • Davide BrambillaDaniela NebuloniGiorgio RossiSergio Lecce
    • G05F3/26H03F3/345H03F3/343
    • H03F3/345G05F3/267
    • A current generator circuit with controllable frequency response has at least one current mirror formed of MOS transistors, being powered through a terminal held at a constant voltage, having an input leg through which a reference current (I1) is driven by a first current generator (G1), and having an output leg for generating, on an output terminal (OUT) of the mirror, a mirrored current (I.sub.out) which is proportional to the reference current (I1). The input leg includes at least a first transistor (M1) which is diode-connected and has a control terminal (Ga1) coupled to a corresponding terminal (Ga2) of a second transistor (M2) included in the output leg. In accordance with the invention, the mirror circuit also has an impedance matching circuit connected across the control terminals (Ga1 and Ga2) of the first and second transistors and configured to hold the same voltage value at both terminals (Ga1 and Ga2). The impedance matching circuit has an adjustable output impedance, specifically lower in value than the value to be had without this circuit. It functions to regulate the impedance on the control node (Ga2) of the second transistor (M2). The invention is equally applicable to N-channel and P-channel MOS transistors. Advantageously, the reference current can be varied by an external signal which is a function of the output signal, to provide feedback regulating features.
    • 具有可控频率响应的电流发生器电路具有由MOS晶体管形成的至少一个电流镜,其通过保持在恒定电压的端子供电,具有输入支路,参考电流(I1)由第一电流发生器 G1),并且具有用于在镜的输出端(OUT)上产生与参考电流(I1)成比例的镜像电流(Iout)的输出支路。 输入支路至少包括二极管连接的第一晶体管(M1),并且具有耦合到包括在输出支路中的第二晶体管(M2)的相应端子(Ga2)的控制端子(Ga1)。 根据本发明,镜电路还具有连接在第一和第二晶体管的控制端(Ga1和Ga2)两端的阻抗匹配电路,并被配置为在两端(Ga1和Ga2)处保持相同的电压值。 阻抗匹配电路具有可调节的输出阻抗,具体值低于没有该电路的值。 它用于调节第二晶体管(M2)的控制节点(Ga2)上的阻抗。 本发明同样适用于N沟道和P沟道MOS晶体管。 有利地,参考电流可以通过作为输出信号的函数的外部信号来改变,以提供反馈调节特征。
    • 10. 发明授权
    • Switching type bandgap controller
    • 开关式带隙控制器
    • US06507178B2
    • 2003-01-14
    • US09944065
    • 2001-08-30
    • Franco CocettaGiorgio Rossi
    • Franco CocettaGiorgio Rossi
    • G05F316
    • H02J7/245G05F3/30Y02T10/92
    • An integrated self-powered and switching electronic circuit regulates a stable reference voltage and comprises a band-gap voltage generator to produce said stable reference voltage for a system circuit block that is generally supplied by the output of the band-gap generator through a comparator and an error amplifier. A regulating loop is provided between the output of the system block and the input of the voltage generator circuit to supply a voltage signal produced by the output of the system block. Advantageously, the voltage generator circuit incorporates both the comparator and the error amplifier.
    • 集成的自供电和开关电子电路调节稳定的参考电压并且包括带隙电压发生器以产生用于系统电路块的所述稳定参考电压,该系统电路块通常通过比较器由带隙发生器的输出端提供, 误差放大器。 在系统块的输出端和电压发生器电路的输入端之间设置调节回路,以提供由系统块的输出产生的电压信号。 有利地,电压发生器电路包括比较器和误差放大器。