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    System and method for reducing power-on-transient current magnitude
    1.
    发明授权
    System and method for reducing power-on-transient current magnitude 有权
    用于降低功率瞬态电流幅度的系统和方法

    公开(公告)号：US07633314B2

    公开(公告)日：2009-12-15

    申请号：US11563868

    申请日：2006-11-28

    申请人： Hugh Mair ,  Rolf Lagerquist

    发明人： Hugh Mair ,  Rolf Lagerquist

    IPC分类号： H03K19/096

    CPC分类号： H03K17/164

    摘要： System and method for reducing power-on transient current magnitude on distributed header switches. A preferred embodiment comprises a distributed header switch coupling a circuit to a power supply, the distributed header switch comprising a linear sequence of combination switches, each combination switches containing a pre-charge switch and a header switch. A first-pass involves sequentially turning on each of the pre-charge switches, which enables a voltage level at the distributed header switch to approach that of a final voltage level and a second-pass involves sequentially turning on each of the header switches. Since the voltage level at the distributed header switches is close to the final voltage level, a resulting transient current is small in magnitude.

    摘要翻译： 用于降低分布式报头交换机上的上电瞬态电流幅度的系统和方法。 优选实施例包括将电路耦合到电源的分布式头部开关，分配的头部开关包括线性顺序的组合开关，每个组合开关包含预充电开关和头部开关。 一次通过涉及顺序打开每个预充电开关，这使得分配的标头开关处的电压电平接近最终电压电平的电压电平，而第二次通过涉及顺序地接通每个标头开关。 由于分布式标题开关处的电压电平接近最终的电压电平，所以产生的瞬态电流的幅度很小。

    Reduced voltage swing digital differential driver
    3.
    发明授权
    Reduced voltage swing digital differential driver 有权

    公开(公告)号：US06570415B2

    公开(公告)日：2003-05-27

    申请号：US10158659

    申请日：2002-05-30

    申请人： Hao Chen ,  Rolf Lagerquist ,  Hugh Mair

    发明人： Hao Chen ,  Rolf Lagerquist ,  Hugh Mair

    IPC分类号： H03B100

    CPC分类号： H04L25/0272 ,  H03K17/04106 ,  H03K17/04123 ,  H03K19/0013 ,  H03K2217/0036 ,  H04L25/028

    摘要： A predriver for a differential pair having a reduce voltage swing is disclosed having fast switching speed and low power consumption. The predriver includes a p-type MOS transistor, and a first and second n-type MOS transistor. The source of the p-type MOS couples to the first power supply rail. The gate of the first n-type MOS transistor couples to the gate of the p-type MOS transistor to form an input. The drain of the first n-type MOS transistor couples to the drain of the p-type MOS transistor to form an output. The drain of the second n-type MOS transistor couples to the source of the first n-type MOS transistor. The source of the second n-type MOS transistor couples to ground. The gate of the second n-type MOS transistor couples to the output. The presence of the second n-type MOS transistor alters the voltage swing of the predriver to be from the threshold voltage level to the full power supply voltage, substantially reducing the current or power consumption.

    Current feedback amplifier having trimcircuitry and method for controlling and equalizing stator winding current
    4.
    发明授权
    Current feedback amplifier having trimcircuitry and method for controlling and equalizing stator winding current 失效
    具有微调电路的电流反馈放大器和用于控制和均衡定子绕组电流的方法

    公开(公告)号：US5959417A

    公开(公告)日：1999-09-28

    申请号：US937219

    申请日：1997-09-18

    申请人： Kenneth J. Maggio ,  Rolf Lagerquist

    发明人： Kenneth J. Maggio ,  Rolf Lagerquist

    IPC分类号： H02P6/00 ,  H02P6/08 ,  H02P7/06 ,  H02P7/10 ,  H02K23/00

    CPC分类号： H02P6/085 ,  H02P6/28

    摘要： A current feedback amplifier (12) is provided for controlling a stator winding phase current in a polyphase stator winding, such as a three-phase stator winding (10), of a polyphase direct current motor. The current amplifier (12) includes a first stage current feedback amplifier C (27) and a second stage current feedback amplifier (100) coupled through a switch (101). The first stage current feedback amplifier C (27) detects a stator winding phase current I.sub.AB flowing through a C-coil (15) of the three-phase stator winding (10) and generates an equalized sense current I.sub.senseT in response that is related to I.sub.AB. The equalized sense current I.sub.senseT is generated using a phase trim FET (31) and an adjustable phase trim FET (32). The second stage current feedback amplifier (100) receives I.sub.senseT from the first stage current feedback amplifier C (27) and generates a control signal. This may be done by comparing I.sub.senseT to an amplitude adjusted reference current I.sub.refT. The amplitude adjusted reference current I.sub.refT is generated using an amplitude trim FET (81) and an adjustable amplitude trim FET (82). The second stage current feedback amplifier (100) provides the control signal to a driver circuit for controlling the stator winding phase current. The second stage current feedback amplifier (100) may sequentially or commutatively couple to other first stage current sense amplifiers, such as a first stage current feedback amplifier B (30) or a first stage current feedback amplifier A (28), to control other stator winding phase currents to generate equalized, amplitude adjusted stator winding phase currents.

    摘要翻译： 提供电流反馈放大器（12），用于控制多相直流电动机的多相定子绕组（例如三相定子绕组（10））中的定子绕组相电流。 电流放大器（12）包括通过开关（101）耦合的第一级电流反馈放大器C（27）和第二级电流反馈放大器（100）。 第一级电流反馈放大器C（27）检测流过三相定子绕组（10）的C线圈（15）的定子绕组相电流IAB，并响应于IAB产生相等的感测电流IsenseT 。 使用相位调整FET（31）和可调节相位调整FET（32）产生均衡的感测电流IsenseT。 第二级电流反馈放大器（100）从第一级电流反馈放大器C（27）接收IsenseT，并产生控制信号。 这可以通过将IsenseT与调幅参考电流IrefT进行比较来完成。 使用幅度调整FET（81）和可调节幅度修正FET（82）产生幅度调整的参考电流IrefT。 第二级电流反馈放大器（100）将控制信号提供给用于控制定子绕组相电流的驱动电路。 第二级电流反馈放大器（100）可以顺序地或互换地耦合到诸如第一级电流反馈放大器B（30）或第一级电流反馈放大器A（28）的其它第一级电流检测放大器，以控制其它定子 绕组相电流产生均衡的调幅定子绕组相电流。

    Method and System for Adaptive Physical Design
    5.
    发明申请
    Method and System for Adaptive Physical Design 有权
    自适应物理设计方法与系统

    公开(公告)号：US20120060138A1

    公开(公告)日：2012-03-08

    申请号：US12876138

    申请日：2010-09-05

    申请人： Nitin Kumar Singh ,  Rajarshee P. Bharadwaj ,  Rolf Lagerquist ,  Alice Wang

    发明人： Nitin Kumar Singh ,  Rajarshee P. Bharadwaj ,  Rolf Lagerquist ,  Alice Wang

    IPC分类号： G06F17/50

    CPC分类号： G06F17/5072 ,  G06F2217/02

    摘要： A method is provided that includes performing a free placement of a system design comprising a plurality of power domains, wherein the power domains are not constrained to physical regions, assigning a physical region to each of the power domains based on the free placement of cells in the power domains, performing a soft cluster placement of the system design with each power domain and corresponding physical region defined as a soft cluster, refining at least one physical region based on the soft cluster placement, redefining cells in at least one power domain based on the soft cluster placement of the cells and the corresponding physical region, and performing a hard cluster placement of the system design with each power domain and corresponding physical region defined as a hard cluster to generate final power domains.

    摘要翻译： 提供了一种方法，其包括执行包括多个功率域的系统设计的自由放置，其中所述功率域不被约束到物理区域，基于所述功率域中的单元的自由放置来为每个功率域分配物理区域 功率域，执行具有每个功率域的系统设计的软集群布置以及被定义为软集群的相应物理区域，基于所述软集群布置来改进至少一个物理区域，基于所述软集群布置重新定义至少一个电源域中的小区，基于 单元的软集群放置和相应的物理区域，以及执行与每个功率域的系统设计的硬集群放置以及被定义为硬集群的对应的物理区域以产生最终的电力域。

    System and method for reducing power-on transient current magnitude
    6.
    发明授权
    System and method for reducing power-on transient current magnitude 有权
    降低上电瞬态电流幅度的系统和方法

    公开(公告)号：US07142019B2

    公开(公告)日：2006-11-28

    申请号：US10933550

    申请日：2004-09-03

    申请人： Hugh T. Mair ,  Rolf Lagerquist

    发明人： Hugh T. Mair ,  Rolf Lagerquist

    IPC分类号： H03K19/096

    CPC分类号： H03K17/164

    摘要： System and method for reducing power-on transient current magnitude on distributed header switches. A preferred embodiment comprises a distributed header switch coupling a circuit to a power supply, the distributed header switch comprising a linear sequence of combination switches, each combination switches containing a pre-charge switch and a header switch. A first-pass involves sequentially turning on each of the pre-charge switches, which enables a voltage level at the distributed header switch to approach that of a final voltage level and a second-pass involves sequentially turning on each of the header switches. Since the voltage level at the distributed header switches is close to the final voltage level, a resulting transient current is small in magnitude.

    摘要翻译： 用于降低分布式报头交换机上的上电瞬态电流幅度的系统和方法。 优选实施例包括将电路耦合到电源的分布式头部开关，分配的头部开关包括线性顺序的组合开关，每个组合开关包含预充电开关和头部开关。 一次通过涉及顺序打开每个预充电开关，这使得分配的标头开关处的电压电平接近最终电压电平的电压电平，而第二次通过涉及顺序地接通每个标头开关。 由于分布式标题开关处的电压电平接近最终的电压电平，所以产生的瞬态电流的幅度很小。

    Shock sensor circuitry and method for amplifying an input signal including leakage currents
    7.
    发明授权
    Shock sensor circuitry and method for amplifying an input signal including leakage currents 失效
    用于放大包括漏电流的输入信号的冲击传感器电路和方法

    公开(公告)号：US6011415A

    公开(公告)日：2000-01-04

    申请号：US919992

    申请日：1997-08-28

    申请人： Dennis V. Hahn ,  Rolf Lagerquist ,  William R. Krenik

    发明人： Dennis V. Hahn ,  Rolf Lagerquist ,  William R. Krenik

    IPC分类号： G11B5/55 ,  G11B5/596 ,  G11B19/04 ,  H01H35/14 ,  H03F3/04

    CPC分类号： G11B5/5582 ,  G11B19/04 ,  G11B5/596

    摘要： A shock sensor circuitry (26) is provided for processing an input signal generated by a shock sensor (28) in response to the shock sensor (28) detecting a force or shock. The shock sensor circuitry (26) includes a leakage tolerant input amplifier (38) for receiving the input signal, and any leakage currents that may also be provided, and amplifying the input signal to generate an amplified input signal. The leakage tolerant input amplifier (38) provides an ac gain of ten and a dc gain of zero. The shock sensor circuitry (26) also includes a filter and amplification circuit and a window comparator. The filter and amplification circuit filters the amplified input signal and amplifies select frequencies of the amplified input signal to generate a summed signal that is provided to the window comparator and compared to a reference value. The window comparator includes an upper comparator (58), a lower comparator (60), and an output circuit (62) to generate a shock sensor circuitry output signal that indicates whether a shock or force was received at a magnitude greater than the reference value.

    摘要翻译： 提供冲击传感器电路（26），用于响应于检测到力或冲击的冲击传感器（28）来处理由冲击传感器（28）产生的输入信号。 冲击传感器电路（26）包括用于接收输入信号的漏电容量输入放大器（38）以及也可以提供的任何泄漏电流，并放大输入信号以产生放大的输入信号。 漏电容量输入放大器（38）提供10的交流增益和零的直流增益。 冲击传感器电路（26）还包括滤波器和放大电路以及窗口比较器。 滤波器和放大电路对放大的输入信号进行滤波并放大放大的输入信号的选择频率，以产生提供给窗口比较器并与参考值进行比较的求和信号。 窗口比较器包括上比较器（58），下比较器（60）和输出电路（62），以产生震动传感器电路输出信号，该信号指示以大于参考值的幅度接收到冲击或力 。