公开(公告)号：US07545209B2

公开(公告)日：2009-06-09

申请号：US11753383

申请日：2007-05-24

Applicant: Rodney Alan Hughes

Inventor： Rodney Alan Hughes

IPC: H03F1/36

CPC classification number: H03G1/0088 ,  H03F3/45475 ,  H03F2203/45136 ,  H03F2203/45522 ,  H03F2203/45526 ,  H03F2203/45534

Abstract: A programmable gain amplifier (PGA) circuit includes a gain adjust circuit and a gain select circuit that are both coupled to an output of an amplifier. The gain select circuit completes feedback to the amplifier while the gain adjust circuit is arranged to boost or cut the gain of the gain selection circuit. The gain adjust circuit can be arranged as a trim adjustment to the overall gain of the PGA circuit, where a different trim adjustment can be mapped to each gain setting such as from a look-up table. In other example implementations, the PGA circuit can periodically switch between multiple gain settings using a modulation scheme such that the overall gain is blended between the various gain settings according to a duty cycle, pulse-width, or delta-sigma modulation, with a time averaging effect on the overall gain of the PGA circuit.

公开(公告)号：US20130021702A1

公开(公告)日：2013-01-24

申请号：US13185210

申请日：2011-07-18

Applicant: Barry F. Waltman ,  Rodney Alan Hughes ,  Reid Adriance ,  Bertrand Nkei ,  Jay Allen Kuehny

Inventor： Barry F. Waltman ,  Rodney Alan Hughes ,  Reid Adriance ,  Bertrand Nkei ,  Jay Allen Kuehny

IPC: H02H3/20 ,  H02H3/24 ,  H02H9/02

CPC classification number: H02H3/202 ,  H02H3/087 ,  H02H3/24 ,  H02H9/025 ,  H02M1/32 ,  H02M1/36 ,  H02M3/156

Abstract: Control circuitry handles inrush current, and may provide under voltage and/or over voltage monitoring and handling, as well as remote enable handling. The circuitry may advantageously employ a sense capacitor in parallel with an input capacitor (e.g., bulk input filter capacitor), and a current mirror to produce a signal proportional to input current. A clamp circuit may control a series pass device to regulate current in response to the proportional signal, or to interrupt current flow in response to an under voltage or over voltage condition or receipt of a signal indicative of a disable state. An enable signal may be summed into a comparator that handles under voltage condition determination.

Abstract translation: 控制电路处理浪涌电流，并且可以提供欠压和/或过压监测和处理以及远程使能处理。 电路可以有利地使用与输入电容器（例如，体输入滤波电容器）并联的感测电容器和电流镜来产生与输入电流成比例的信号。 钳位电路可以控制串联装置以响应于比例信号来调节电流，或者响应于欠压或过压状态或接收到指示禁用状态的信号来中断电流。 使能信号可以被相加到处理欠压条件确定的比较器中。

公开(公告)号：US07920026B2

公开(公告)日：2011-04-05

申请号：US12099099

申请日：2008-04-07

Applicant: Rodney Alan Hughes

Inventor： Rodney Alan Hughes

IPC: H03F3/45

CPC classification number: H03F3/45076 ,  H03F3/3066 ,  H03F2203/45112 ,  H03F2203/45292

Abstract: An output stage of an amplifier circuit includes one or more output transistors that are selectively driven by a boosted drive circuit, where the boosted drive circuit is arranged such that the output range of the amplifier circuit is increased while maintaining reduced quiescent current. The drive signal to each output transistor is selectively increased only when demanded by the output load conditions. The threshold for boosting the drive signal can be adjusted for optimized performance. In one example, a class AB output stage includes a separate drive boost circuit for each output transistor. For this example, each drive boost circuit has a separate threshold for boosting each of the drive signals to the output transistors. The boosting can also be adjusted to optimize the differential input stage and current mirror maximum current requirement while maintaining minimum required bias currents.

Abstract translation: 放大器电路的输出级包括由升压驱动电路有选择地驱动的一个或多个输出晶体管，其中升压驱动电路被布置成使得放大器电路的输出范围增加同时保持降低的静态电流。 仅当根据输出负载条件要求时，选择性地增加到每个输出晶体管的驱动信号。 可以调整升高驱动信号的阈值以优化性能。 在一个示例中，AB类输出级包括用于每个输出晶体管的单独的驱动升压电路。 对于该示例，每个驱动器升压电路具有用于将每个驱动信号升压到输出晶体管的单独阈值。 还可以调节升压以优化差分输入级和电流镜最大电流要求，同时保持最小所需偏置电流。

公开(公告)号：US08885308B2

公开(公告)日：2014-11-11

申请号：US13185210

申请日：2011-07-18

Applicant: Barry F. Waltman ,  Rodney Alan Hughes ,  Reid Adriance ,  Bertrand Nkei ,  Jay Allen Kuehny

Inventor： Barry F. Waltman ,  Rodney Alan Hughes ,  Reid Adriance ,  Bertrand Nkei ,  Jay Allen Kuehny

IPC: H02H3/20 ,  H02H3/24 ,  H02H3/087 ,  H02H9/02 ,  H02M1/32 ,  H02M1/36

CPC classification number: H02H3/202 ,  H02H3/087 ,  H02H3/24 ,  H02H9/025 ,  H02M1/32 ,  H02M1/36 ,  H02M3/156

Abstract: Control circuitry handles inrush current, and may provide under voltage and/or over voltage monitoring and handling, as well as remote enable handling. The circuitry may advantageously employ a sense capacitor in parallel with an input capacitor (e.g., bulk input filter capacitor), and a current mirror to produce a signal proportional to input current. A clamp circuit may control a series pass device to regulate current in response to the proportional signal, or to interrupt current flow in response to an under voltage or over voltage condition or receipt of a signal indicative of a disable state. An enable signal may be summed into a comparator that handles under voltage condition determination.

Abstract translation: 控制电路处理浪涌电流，并且可以提供欠压和/或过压监测和处理以及远程使能处理。 电路可以有利地使用与输入电容器（例如，体输入滤波电容器）并联的感测电容器和电流镜来产生与输入电流成比例的信号。 钳位电路可以控制串联装置以响应于比例信号来调节电流，或者响应于欠压或过压状态或接收到指示禁用状态的信号来中断电流。 使能信号可以被相加到处理欠压条件确定的比较器中。

公开(公告)号：US20130020867A1

公开(公告)日：2013-01-24

申请号：US13185217

申请日：2011-07-18

Applicant: Rodney Alan Hughes ,  Reid Adriance ,  Bertrand Nkei ,  Jay Allen Kuehny

Inventor： Rodney Alan Hughes ,  Reid Adriance ,  Bertrand Nkei ,  Jay Allen Kuehny

IPC: H02J3/12

CPC classification number: H02M3/33507 ,  H02J3/12 ,  H02M2001/0006 ,  H02M2001/0019 ,  Y10T307/297

Abstract: An auxiliary power supply or bias voltage supply employs a step up switch mode DC/DC power converter topology to supply regulated bias supply voltages, from very low input voltages (e.g., less than 2V). The supply will synchronize to dynamic loads making it particularly useful in circuits with periodic high peak current power demands, for example, gate drive circuits employed in regulated switched mode power converters. When unladed, the supply will efficiently adjust its cycle period to the minimum required to maintain the desired boosted output voltage. Additional transformer windings or a charge pump may be used to generate additional vias voltage sources.

Abstract translation: 辅助电源或偏置电压源采用升压开关模式DC / DC电源转换器拓扑，从非常低的输入电压（例如小于2V）提供稳压偏置电源电压。 电源将与动态负载同步，使其在具有周期性高峰值电流功率需求的电路中特别有用，例如在稳压开关模式功率转换器中采用的栅极驱动电路。 当未上电时，电源将有效地将其周期周期调整到维持所需升压输出电压所需的最小值。 可以使用附加的变压器绕组或电荷泵来产生额外的通孔电压源。

公开(公告)号：US07352242B1

公开(公告)日：2008-04-01

申请号：US11241172

申请日：2005-09-30

Applicant: Rodney Alan Hughes

Inventor： Rodney Alan Hughes

IPC: H03F3/45

CPC classification number: H03F3/45475 ,  H03F1/34 ,  H03F2203/45522 ,  H03G1/0035 ,  H03G1/0088

Abstract: A programmable gain amplifier includes a first gain setting circuit and a second gain setting circuit that are both coupled to an output of an amplifier. A trim adjustment circuit is and arranged to complete feedback to the amplifier by digitally panning between the first gain setting and the second gain setting based on a trim setting. The trim setting can be provided by a look-up table that is indexed with gain settings. The first and the second gain setting circuits can each include an array of series coupled resistors, where a tap point from each array is selectively coupled to the trim adjustment circuit for adjusting the overall gain. The first and second gain setting circuits can be matched to one another, with the addition of a gain offset circuit that is configured to skew the nominal gain values between the first and second gain setting circuits.

Abstract translation: 可编程增益放大器包括耦合到放大器的输出的第一增益设置电路和第二增益设置电路。 微调调整电路被布置成通过基于修整设置在第一增益设置和第二增益设置之间进行数字平移来完成对放大器的反馈。 修剪设置可以由通过增益设置索引的查找表提供。 第一和第二增益设置电路可以各自包括串联耦合电阻器阵列，其中来自每个阵列的抽头选择性地耦合到微调调整电路以调整整体增益。 第一增益设置电路和第二增益设置电路可以彼此匹配，增加补偿电路被配置为使第一和第二增益设置电路之间的标称增益值偏移。

公开(公告)号：US08824167B2

公开(公告)日：2014-09-02

申请号：US13185217

申请日：2011-07-18

Applicant: Rodney Alan Hughes ,  Reid Adriance ,  Bertrand Nkei ,  Jay Allen Kuehny

Inventor： Rodney Alan Hughes ,  Reid Adriance ,  Bertrand Nkei ,  Jay Allen Kuehny

IPC: H02M3/335 ,  H02M1/00 ,  H02J3/12

CPC classification number: H02M3/33507 ,  H02J3/12 ,  H02M2001/0006 ,  H02M2001/0019 ,  Y10T307/297

Abstract: An auxiliary power supply or bias voltage supply employs a step up switch mode DC/DC power converter topology to supply regulated bias supply voltages, from very low input voltages (e.g., less than 2V). The supply will synchronize to dynamic loads making it particularly useful in circuits with periodic high peak current power demands, for example, gate drive circuits employed in regulated switched mode power converters. When unladed, the supply will efficiently adjust its cycle period to the minimum required to maintain the desired boosted output voltage. Additional transformer windings or a charge pump may be used to generate additional vias voltage sources.

Abstract translation: 辅助电源或偏置电压源采用升压开关模式DC / DC电源转换器拓扑，从非常低的输入电压（例如小于2V）提供稳压偏置电源电压。 电源将与动态负载同步，使其在具有周期性高峰值电流功率需求的电路中特别有用，例如在稳压开关模式功率转换器中采用的栅极驱动电路。 当未上电时，电源将有效地将其周期周期调整到维持所需升压输出电压所需的最小值。 可以使用附加的变压器绕组或电荷泵来产生额外的通孔电压源。

公开(公告)号：US07605659B2

公开(公告)日：2009-10-20

申请号：US11753416

申请日：2007-05-24

Applicant: Rodney Alan Hughes

Inventor： Rodney Alan Hughes

IPC: H03G3/00

CPC classification number: H03G1/0088 ,  H03F3/45475 ,  H03F2203/45136 ,  H03F2203/45522 ,  H03F2203/45526 ,  H03F2203/45534

Abstract: A programmable gain amplifier (PGA) circuit includes a gain adjust circuit and a gain select circuit that are both coupled to an output of an amplifier. The gain select circuit completes feedback to the amplifier while the gain adjust circuit is arranged to boost or cut the gain of the gain selection circuit. The gain adjust circuit can be arranged as a trim adjustment to the overall gain of the PGA circuit, where a different trim adjustment can be mapped to each gain setting such as from a look-up table. In other example implementations, the PGA circuit can periodically switch between multiple gain settings using a modulation scheme such that the overall gain is blended between the various gain settings according to a duty cycle, pulse-width, or delta-sigma modulation, with a time averaging effect on the overall gain of the PGA circuit.

Abstract translation: 可编程增益放大器（PGA）电路包括都被耦合到放大器的输出的增益调整电路和增益选择电路。 增益选择电路完成对放大器的反馈，同时增益调整电路被设置为提升或削减增益选择电路的增益。 增益调整电路可以被布置为对PGA电路的总体增益的修整调整，其中可以将不同的调整调整映射到诸如查找表的每个增益设置。 在其他示例实现中，PGA电路可以使用调制方案周期性地在多个增益设置之间切换，使得总体增益根据占空比，脉冲宽度或Δ-Σ调制在各种增益设置之间进行混合，具有时间 对PGA电路整体增益的平均效应。

公开(公告)号：US20080252378A1

公开(公告)日：2008-10-16

申请号：US11753416

申请日：2007-05-24

Applicant: Rodney Alan Hughes

Inventor： Rodney Alan Hughes

IPC: H03G3/00

CPC classification number: H03G1/0088 ,  H03F3/45475 ,  H03F2203/45136 ,  H03F2203/45522 ,  H03F2203/45526 ,  H03F2203/45534

Abstract: A programmable gain amplifier (PGA) circuit includes a gain adjust circuit and a gain select circuit that are both coupled to an output of an amplifier. The gain select circuit completes feedback to the amplifier while the gain adjust circuit is arranged to boost or cut the gain of the gain selection circuit. The gain adjust circuit can be arranged as a trim adjustment to the overall gain of the PGA circuit, where a different trim adjustment can be mapped to each gain setting such as from a look-up table. In other example implementations, the PGA circuit can periodically switch between multiple gain settings using a modulation scheme such that the overall gain is blended between the various gain settings according to a duty cycle, pulse-width, or delta-sigma modulation, with a time averaging effect on the overall gain of the PGA circuit.

公开(公告)号：US20080061872A1

公开(公告)日：2008-03-13

申请号：US11753383

申请日：2007-05-24

Applicant: Rodney Alan Hughes

Inventor： Rodney Alan Hughes

IPC: H03F1/38

CPC classification number: H03G1/0088 ,  H03F3/45475 ,  H03F2203/45136 ,  H03F2203/45522 ,  H03F2203/45526 ,  H03F2203/45534

Abstract: A programmable gain amplifier (PGA) circuit includes a gain adjust circuit and a gain select circuit that are both coupled to an output of an amplifier. The gain select circuit completes feedback to the amplifier while the gain adjust circuit is arranged to boost or cut the gain of the gain selection circuit. The gain adjust circuit can be arranged as a trim adjustment to the overall gain of the PGA circuit, where a different trim adjustment can be mapped to each gain setting such as from a look-up table. In other example implementations, the PGA circuit can periodically switch between multiple gain settings using a modulation scheme such that the overall gain is blended between the various gain settings according to a duty cycle, pulse-width, or delta-sigma modulation, with a time averaging effect on the overall gain of the PGA circuit.

Abstract translation: 可编程增益放大器（PGA）电路包括都被耦合到放大器的输出的增益调整电路和增益选择电路。 增益选择电路完成对放大器的反馈，同时增益调整电路被设置为提升或削减增益选择电路的增益。 增益调整电路可以被布置为对PGA电路的总体增益的修整调整，其中可以将不同的调整调整映射到诸如查找表的每个增益设置。 在其他示例实现中，PGA电路可以使用调制方案周期性地在多个增益设置之间切换，使得总体增益根据占空比，脉冲宽度或Δ-Σ调制在各种增益设置之间进行混合，具有时间 对PGA电路整体增益的平均效应。