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    LOW DROPOUT CURRENT SOURCE
    2.
    发明申请
    LOW DROPOUT CURRENT SOURCE 审中-公开
    低压差电流源

    公开(公告)号：US20120019322A1

    公开(公告)日：2012-01-26

    申请号：US13155556

    申请日：2011-06-08

    申请人： Pradeep Charles Silva ,  Praveen Varma Nadimpalli ,  Joseph Hubert Colles

    发明人： Pradeep Charles Silva ,  Praveen Varma Nadimpalli ,  Joseph Hubert Colles

    IPC分类号： H03F3/45 ,  G05F1/575

    CPC分类号： H03F1/30 ,  G05F1/575 ,  H03F3/189 ,  H03F3/24 ,  H03F2200/447 ,  H03F2200/555 ,  H03F2200/78

    摘要： Disclosed is a low dropout current source that includes a first field effect transistor (FET), a second FET having a drain that is an output for an output voltage and an output current, and a third FET, wherein a gate of the first FET is coupled to both a gate of the second FET and a drain of the third FET, and wherein a drain of the first FET is coupled to a source of the third FET. A differential amplifier has an inverting input coupled to the drain of the first FET, a non-inverting input coupled to the drain of the second FET and an amplifier output coupled to the gate of the third FET. A current reference is coupled between the drain of the third FET and a fixed voltage node. The current reference provides a reference current that is multiplied and output from the third FET.

    摘要翻译： 公开了一种低压差电流源，其包括第一场效应晶体管（FET），具有作为输出电压和输出电流的输出的漏极的第二FET和第三FET，其中第一FET的栅极为 耦合到第二FET的栅极和第三FET的漏极，并且其中第一FET的漏极耦合到第三FET的源极。 差分放大器具有耦合到第一FET的漏极的反相输入端，耦合到第二FET的漏极的非反相输入端和耦合到第三FET栅极的放大器输出端。 电流基准耦合在第三FET的漏极和固定电压节点之间。 电流参考值提供了一个与第三个FET相乘和输出的参考电流。

    Analog divider
    3.
    发明授权
    Analog divider 失效
    模拟分频器

    公开(公告)号：US08624659B2

    公开(公告)日：2014-01-07

    申请号：US13047211

    申请日：2011-03-14

    申请人： Praveen Varma Nadimpalli ,  Joseph Hubert Colles

    发明人： Praveen Varma Nadimpalli ,  Joseph Hubert Colles

    IPC分类号： G06G7/16

    CPC分类号： G06G7/16

    摘要： An exemplary embodiment of an analog multiplier may include a voltage controlled resistance circuit, a first transistor and a second transistor, where the resistance of the voltage controlled resistance circuit is based upon a first input voltage. The current passing through the voltage controlled resistance circuit is based upon a second input voltage. The first transistor and the second transistor form a current mirror to mirror the current passing through the voltage controlled resistance circuit to provide a power supply control current to a wideband code division multiple access radio frequency power amplifier.

    摘要翻译： 模拟乘法器的示例性实施例可以包括电压控制电阻电路，第一晶体管和第二晶体管，其中电压控制电阻电路的电阻基于第一输入电压。 通过压控电阻电路的电流基于第二输入电压。 第一晶体管和第二晶体管形成电流镜以反射通过压控电阻电路的电流，以向宽带码分多址射频功率放大器提供电源控制电流。

    Charge-pump system for providing independent voltages
    4.
    发明授权
    Charge-pump system for providing independent voltages 有权
    电荷泵系统提供独立的电压

    公开(公告)号：US08624576B2

    公开(公告)日：2014-01-07

    申请号：US13222484

    申请日：2011-08-31

    申请人： Nadim Khlat ,  Joseph Hubert Colles

    发明人： Nadim Khlat ,  Joseph Hubert Colles

    IPC分类号： G05F1/10

    CPC分类号： H02M3/07 ,  H02M2001/009

    摘要： Disclosed is a charge pump system having a charge pump with a switch control input, a voltage output terminal, a high voltage terminal coupled to a high voltage node and a low voltage terminal coupled to a low voltage node. Also included is a first buck/boost switch having a first terminal coupled to the voltage output terminal, a second terminal coupled to a first output node, and a first control terminal for receiving a first control signal. A second buck/boost switch includes a first terminal coupled to the voltage output terminal, a second terminal coupled to a second output node, and a control terminal for receiving a second control signal. Further included is a switch controller that is adapted to generate the first control signal and the second control signal such that voltage pulses output from the first output node and the second output node, respectively, are asymmetrical and coincidental.

    摘要翻译： 公开了一种具有电荷泵的电荷泵系统，其具有开关控制输入端，电压输出端子，耦合到高电压节点的高电压端子和耦合到低压节点的低电压端子。 还包括第一降压/升压开关，其具有耦合到电压输出端的第一端子，耦合到第一输出节点的第二端子和用于接收第一控制信号的第一控制端子。 第二降压/升压开关包括耦合到电压输出端的第一端子，耦合到第二输出节点的第二端子和用于接收第二控制信号的控制端子。 还包括开关控制器，其适于产生第一控制信号和第二控制信号，使得分别从第一输出节点和第二输出节点输出的电压脉冲是不对称和巧合的。

    Single charge-pump buck-boost for providing independent voltages
    5.
    发明授权
    Single charge-pump buck-boost for providing independent voltages 有权
    单电荷泵降压 - 升压，提供独立电压

    公开(公告)号：US08618868B2

    公开(公告)日：2013-12-31

    申请号：US13222453

    申请日：2011-08-31

    申请人： Nadim Khlat ,  Joseph Hubert Colles

    发明人： Nadim Khlat ,  Joseph Hubert Colles

    IPC分类号： G05F1/10

    CPC分类号： H02M3/07 ,  H02M2001/009

    摘要： Disclosed is a charge pump having first and second outputs and at least one capacitor. A plurality of switches are coupled to the at least one capacitor for selectively coupling the at least one capacitor between a high voltage node and a low voltage node, and for selectively coupling the at least one capacitor to the first output and the second output. A switch controller is adapted to generate control signals for the plurality of switches to selectively couple the at least one capacitor between the high voltage node and the low voltage node during charging, and to selectively couple the at least one capacitor to the first output and the second output during discharging that output a first voltage pulse from the first output and a second voltage pulse from the second output such that the first voltage pulse and the second voltage pulse are asymmetrical and coincidental.

    摘要翻译： 公开了一种具有第一和第二输出的电荷泵和至少一个电容器。 多个开关耦合到所述至少一个电容器，用于选择性地将所述至少一个电容器耦合在高压节点和低电压节点之间，并且用于选择性地将所述至少一个电容器耦合到所述第一输出和所述第二输出。 开关控制器适于产生用于多个开关的控制信号，以在充电期间选择性地将高电压节点和低电压节点之间的至少一个电容器耦合，并且选择性地将至少一个电容器耦合到第一输出端 在第一输出端输出第一电压脉冲和来自第二输出的第二电压脉冲的放电期间的第二输出，使得第一电压脉冲和第二电压脉冲不对称和重合。

    Analog divider
    6.
    发明授权
    Analog divider 失效
    模拟分频器

    公开(公告)号：US08618862B2

    公开(公告)日：2013-12-31

    申请号：US13047361

    申请日：2011-03-14

    申请人： Praveen Varma Nadimpalli ,  Joseph Hubert Colles

    发明人： Praveen Varma Nadimpalli ,  Joseph Hubert Colles

    IPC分类号： G06G7/16

    CPC分类号： G06G7/16

    摘要： An exemplary embodiment of an analog multiplier may include a voltage controlled resistance circuit, a first transistor and a second transistor, where the resistance of the voltage controlled resistance circuit is based upon a difference between a supply voltage and a first input voltage and a constant current supply. The current passing through the voltage controlled resistance circuit is based upon a difference between the voltage supply and a second input voltage. The first transistor may be configured to mirror the current passing through the voltage controlled resistance circuit.

    摘要翻译： 模拟乘法器的示例性实施例可以包括电压控制电阻电路，第一晶体管和第二晶体管，其中电压控制电阻电路的电阻基于电源电压和第一输入电压与恒定电流之间的差 供应。 通过压控电阻电路的电流是基于电源和第二输入电压之间的差。 第一晶体管可以被配置为镜像通过压控电阻电路的电流。

    Current DAC
    8.
    发明授权
    Current DAC 有权
    电流DAC

    公开(公告)号：US08410966B2

    公开(公告)日：2013-04-02

    申请号：US13161742

    申请日：2011-06-16

    申请人： Praveen Varma Nadimpalli ,  Joseph Hubert Colles

    发明人： Praveen Varma Nadimpalli ,  Joseph Hubert Colles

    IPC分类号： H03M1/80

    CPC分类号： H03F1/30 ,  G05F1/575 ,  H03F3/189 ,  H03F3/24 ,  H03F2200/447 ,  H03F2200/555 ,  H03F2200/78

    摘要： A current digital-to-analog converter (DAC) is disclosed. The current DAC includes a current reference circuit coupled between a voltage source terminal and a voltage node, wherein the current reference circuit includes a feedback node. A switchable resistor network is communicably coupled to the feedback node of the current reference circuit via a first feedback network that is adapted to equalize a first voltage across the switchable resistor network voltage with a second voltage between the feedback node and the voltage node. A current mirror includes an output node communicably coupled to the switchable resistor network via a second feedback network that is adapted to equalize an output current that flows from the output node with an input current that flows into the switchable resistor network.

    摘要翻译： 公开了一种当前的数模转换器（DAC）。 电流DAC包括耦合在电压源端子和电压节点之间的电流参考电路，其中电流参考电路包括反馈节点。 可切换电阻网络经由第一反馈网络可通信地耦合到电流参考电路的反馈节点，该第一反馈网络适于使可切换电阻器网络电压上的第一电压与反馈节点与电压节点之间的第二电压相等。 电流镜包括经由第二反馈网络可通信地耦合到可切换电阻器网络的输出节点，其适于使从输出节点流出的输出电流与流入可切换电阻器网络的输入电流相等。