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74 条记录 (耗时 0.054 秒)

    System for controlling a plurality of pulse-width-modulated switching power converters
    1.
    发明授权
    System for controlling a plurality of pulse-width-modulated switching power converters 有权
    用于控制多个脉宽调制开关电源转换器的系统

    公开(公告)号：US06965220B2

    公开(公告)日：2005-11-15

    申请号：US10295612

    申请日：2002-11-14

    申请人： Kent Kernahan ,  Elias Lozano ,  John Carl Thomas

    发明人： Kent Kernahan ,  Elias Lozano ,  John Carl Thomas

    IPC分类号： G05F3/26 ,  H02J7/00 ,  H02M1/084 ,  H02M3/156 ,  H02M3/157 ,  H02M3/158 ,  H03M5/08 ,  G05F1/40

    CPC分类号： H02M3/157 ,  G05F3/262 ,  H02J7/0065 ,  H02M1/0845 ,  H02M3/156 ,  H02M3/1588 ,  H02M2001/0012 ,  H02M2001/007 ,  H02M2001/008 ,  H03M5/08 ,  H05B41/2828 ,  Y02B20/186 ,  Y02B70/1466 ,  Y10T307/438 ,  Y10T307/469

    摘要： A plurality of pulse-width-modulated switching power converters are controlled in a system which includes a programmable control circuit which provides control information to cause generation of pulse-width-modulated signals as appropriate to correct an operation of a switching power converter. The programmable control circuit receives digital information which identifies the topology of each of the switching power converters being controlled. The programmable control circuit also receives digital information which identifies associated target performance for the switching power converters under its control. The programmable control circuit also receives information which is indicative of the performance of the power converters and compares the performance of the power converters with respect to the target performance of the power converters. If a difference between the performance and the target performance is identified, the programmable control circuit generates the control information is needed to correct the operation of the switching power converters.

    摘要翻译： 在包括可编程控制电路的系统中控制多个脉冲宽度调制的开关电源转换器，该可编程控制电路提供控制信息以适当地产生脉冲宽度调制信号以校正开关功率转换器的操作。 可编程控制电路接收识别被控制的每个开关功率转换器的拓扑的数字信息。 可编程控制电路还接收数字信息，其识别其控制下的开关电源转换器的相关目标性能。 可编程控制电路还接收指示功率转换器的性能的信息，并且相对于功率转换器的目标性能来比较功率转换器的性能。 如果识别出性能和目标性能之间的差异，则可编程控制电路产生需要的控制信息来校正开关电源转换器的操作。

    Sample and hold circuit including a multiplexer
    6.
    发明授权
    Sample and hold circuit including a multiplexer 有权
    采样和保持电路包括多路复用器

    公开(公告)号：US06801146B2

    公开(公告)日：2004-10-05

    申请号：US10295449

    申请日：2002-11-14

    申请人： Kent Kernahan ,  Elias Lozano ,  Daniel W. Yoder

    发明人： Kent Kernahan ,  Elias Lozano ,  Daniel W. Yoder

    IPC分类号： H03M100

    CPC分类号： G11C27/02 ,  H03K5/133 ,  H03L7/0996

    摘要： A sample and hold circuit is provided which includes first and second input circuits adapted to sample, respectively, first and second voltage measurements. The second voltage measurements correspond to current measurements. A multiplexer coupled to the first and second input circuits selected either the first or second measurements. A voltage sealer is provided between the output of the first input circuit and the multiplexer. A multiplier circuit, which may be a switched capacitor network, is utilized to multiply the second voltage measurements. The multiplexer provides its output to an analog-to-digital converter.

    摘要翻译： 提供了采样和保持电路，其包括适于分别采样第一和第二电压测量的第一和第二输入电路。 第二电压测量对应于电流测量。 耦合到第一和第二输入电路的多路复用器选择第一或第二测量。 在第一输入电路的输出和多路复用器之间提供电压定标器。 可以使用可以是开关电容器网络的乘法器电路来乘以第二电压测量。 多路复用器将其输出提供给模数转换器。

    Circuit for controlling the time duration of a signal
    7.
    发明授权
    Circuit for controlling the time duration of a signal 有权
    用于控制信号持续时间的电路

    公开(公告)号：US07279995B2

    公开(公告)日：2007-10-09

    申请号：US11082136

    申请日：2005-03-15

    申请人： Kent Kernahan ,  John Carl Thomas

    发明人： Kent Kernahan ,  John Carl Thomas

    IPC分类号： H03B1/00

    CPC分类号： H03K19/0963 ,  H03K19/215 ,  H03K23/005 ,  H03K23/40

    摘要： A circuit controls the pulse width of an output signal from a voltage controlled oscillator. The voltage controlled oscillator includes a ring oscillator comprising a plurality of series-connected inverters. In one embodiment a selector selects at least one output signal from an inverter in the plurality of series-connected inverters. An output circuit receives the selected output signal and a reference signal to provide a final output signal having a time duration proportional to the number of inverters between the inverters providing the reference signal and the output signal to the selection circuit.

    摘要翻译： 电路控制来自压控振荡器的输出信号的脉冲宽度。 压控振荡器包括具有多个串联连接的逆变器的环形振荡器。 在一个实施例中，选择器在多个串联逆变器中选择来自逆变器的至少一个输出信号。 输出电路接收所选择的输出信号和参考信号，以提供具有与提供参考信号的反相器和输出信号之间的反相器数量成比例的持续时间的最终输出信号。

    Low power method of monitoring and of responsively initiating higher powered intelligent response to detected change of condition
    8.
    发明授权
    Low power method of monitoring and of responsively initiating higher powered intelligent response to detected change of condition 失效
    低功率监控方法和响应性地启动更高功率的智能响应以检测到状况变化

    公开(公告)号：US07543163B2

    公开(公告)日：2009-06-02

    申请号：US11326104

    申请日：2006-01-04

    申请人： Kent Kernahan ,  John Carl Thomas ,  Craig Norman Lambert

    发明人： Kent Kernahan ,  John Carl Thomas ,  Craig Norman Lambert

    IPC分类号： G06F1/00 ,  G06F1/26 ,  G06F1/32

    CPC分类号： G06F1/3203 ,  G06F1/3237 ,  G06F1/3287 ,  Y02D10/126 ,  Y02D10/128 ,  Y02D10/171

    摘要： A synchronous control system includes a logic controller (e.g., microprocessor) which can be put into low power standby or sleep mode by shutting off its clock. A quick-start oscillator (QSO) remains shut off to conserve power when not needed, but awakens rapidly and supplies clock signals to the logic controller for quickly awakening the controller so the latter can to respond to exigent circumstances. One such circumstance can be the drop of a vital supply voltage below a predefined threshold. A low power comparator (LPTC) detects the drop and starts up the QSO which in turn awakens the controller. The controller determines what the reason for the awakening is, quickly responds to the exigent circumstance and then turns the QSO off to thereby conserve power and put itself (QSO) back to sleep. Disclosures are provided for the QSO and a first calibration subsystem used to maintain QSO output frequency within a desired range. Disclosures are provided for the LPTC and a second calibration subsystem used to set its trigger threshold. Disclosure of a novel DAC within the LPTC is also provided.

    摘要翻译： 同步控制系统包括逻辑控制器（例如，微处理器），其可通过关闭其时钟而被置于低功率待机或休眠模式。 快速启动振荡器（QSO）保持关闭，以在不需要时节省功耗，但可以快速唤醒并将时钟信号提供给逻辑控制器，以便快速唤醒控制器，以便后者可以响应紧急情况。 一个这样的情况可能是重要的电源电压下降到低于预定阈值。 低功耗比较器（LPTC）检测掉，并启动QSO，这反过来唤醒了控制器。 控制器确定唤醒的原因是什么，快速响应紧急情况，然后关闭QSO，从而节省电力并使其自身（QSO）恢复睡眠。 提供了用于QSO和用于将QSO输出频率保持在期望范围内的第一校准子系统的公开。 为LPTC提供了披露，并且提供了用于设置其触发阈值的第二校准子系统。 还提供了LPTC内的新型DAC的公开。

    Switching power converter method
    9.
    发明授权
    Switching power converter method 有权
    开关电源转换器方法

    公开(公告)号：US07002328B2

    公开(公告)日：2006-02-21

    申请号：US10925643

    申请日：2004-08-25

    申请人： Kent Kernahan ,  John Carl Thomas

    发明人： Kent Kernahan ,  John Carl Thomas

    IPC分类号： G05F1/40

    CPC分类号： H02M3/157 ,  G05F3/262 ,  H02J7/0065 ,  H02M1/0845 ,  H02M3/156 ,  H02M3/1588 ,  H02M2001/0012 ,  H02M2001/007 ,  H02M2001/008 ,  H03M5/08 ,  H05B41/2828 ,  Y02B20/186 ,  Y02B70/1466 ,  Y10T307/438 ,  Y10T307/469

    摘要： Disclosed is a method of producing a switching power converter which is implemented by providing a ring oscillator made up of a plurality of series-connected inverters. A feedback loop from the output of the last inverter in the series to an input lead of the first inverter in the series is provided. A selection circuit is provided which has a plurality of inputs and one or more outputs. An output of each of the inverters is connected to an associated input of the selection circuit. An exclusive OR gate is provided which has first and second inputs. The selection circuit is configured to selectively provide to the first input of the exclusive OR gate an output signal from an inverter in the string of series connected inverters, and further the selection circuit is configured to provide to the second input of the exclusive OR gate an output signal from an output lead of another inverter in the string of inverters.

    摘要翻译： 公开了一种通过提供由多个串联逆变器构成的环形振荡器来实现的开关电源转换器的制造方法。 提供从串联的最后一个反相器的输出到串联的第一反相器的输入引线的反馈回路。 提供了具有多个输入和一个或多个输出的选择电路。 每个反相器的输出连接到选择电路的相关输入端。 提供具有第一和第二输入的异或门。 选择电路被配置为选择性地向异或门的第一输入提供串联连接的反相器串中的反相器的输出信号，并且还选择电路被配置为向异或门的第二输入提供 来自反相器串中的另一个逆变器的输出引线的输出信号。

    Touch screen display circuit and voltage measurement circuit
    10.
    发明授权
    Touch screen display circuit and voltage measurement circuit 有权
    触摸屏显示电路和电压测量电路

    公开(公告)号：US06961015B2

    公开(公告)日：2005-11-01

    申请号：US10295559

    申请日：2002-11-14

    申请人： Kent Kernahan ,  John Carl Thomas

    发明人： Kent Kernahan ,  John Carl Thomas

    IPC分类号： G05F3/26 ,  H02J7/00 ,  H02M1/084 ,  H02M3/156 ,  H02M3/157 ,  H02M3/158 ,  H03M5/08 ,  H03M1/34

    CPC分类号： H02M3/157 ,  G05F3/262 ,  H02J7/0065 ,  H02M1/0845 ,  H02M3/156 ,  H02M3/1588 ,  H02M2001/0012 ,  H02M2001/007 ,  H02M2001/008 ,  H03M5/08 ,  H05B41/2828 ,  Y02B20/186 ,  Y02B70/1466 ,  Y10T307/438 ,  Y10T307/469

    摘要： A touch screen display circuit is disclosed which includes means for measuring a voltage at two separate input terminals which represent a location on a touch screen where pressure was applied. The display circuit includes means for defining a time period during which the voltage is measured and means for converting the measured voltage to a digital value. The means for measuring a voltage includes an amplifier and a capacitor which are configured as an integrator. The means for converting comprises a counter that measures an amount of time required for the capacitor to dissipate its charge. A touch screen display system having a touch screen which includes first and second sheets of conductive materials positioned in a spaced apart relationship is disclosed. The touch screen display system utilizes a means coupled to the first and second sheets for measuring a voltage at two separate input terminals, a means for defining a time period during which the voltage is measured and a means for converting the voltage to a digital value.

    摘要翻译： 公开了一种触摸屏显示电路，其包括用于测量两个单独输入端子处的电压的装置，其表示施加压力的触摸屏上的位置。 显示电路包括用于定义测量电压的时间段的装置和用于将所测量的电压转换为数字值的装置。 用于测量电压的装置包括被配置为积分器的放大器和电容器。 用于转换的装置包括测量电容器消耗其电荷所需的时间量的计数器。 公开了具有触摸屏的触摸屏显示系统，该触摸屏包括以间隔开的关系定位的第一和第二导电材料片。 触摸屏显示系统利用耦合到第一和第二片材的装置来测量两个分离的输入端子处的电压，用于限定测量电压的时间段的装置和用于将电压转换为数字值的装置。