公开(公告)号：US08310300B2

公开(公告)日：2012-11-13

申请号：US12870464

申请日：2010-08-27

Applicant: Thomas D. Cook ,  Jeffrey C. Cunningham ,  Karthik Ramanan

Inventor： Thomas D. Cook ,  Jeffrey C. Cunningham ,  Karthik Ramanan

IPC: G05F1/10 ,  G05F3/02

CPC classification number: H02M3/07

Abstract: A charge pump includes a first counter and a pump stage. The first counter has a control input for receiving a control signal, and an output for providing a first count value. The first count value is incremented in response to the control signal being a first logic state and the first count value is decremented in response to the control signal being a second logic state. The pump stage has a variable capacitor. The variable capacitor has a control input coupled to the output of the first counter for receiving the first count value. The capacitance value of the variable capacitor is changed in response to the first count value changing. The capacitance value is for determining a ramp-up rate of an output voltage at an output of the charge pump.

Abstract translation: 电荷泵包括第一计数器和泵级。 第一计数器具有用于接收控制信号的控制输入和用于提供第一计数值的输出。 第一计数值响应于控制信号是第一逻辑状态而递增，并且第一计数值响应于控制信号是第二逻辑状态而递减。 泵级具有可变电容器。 可变电容器具有耦合到第一计数器的输出的控制输入，用于接收第一计数值。 可变电容器的电容值响应于第一计数值变化而改变。 电容值用于确定电荷泵输出处的输出电压的上升速率。

公开(公告)号：US20120169404A1

公开(公告)日：2012-07-05

申请号：US12984258

申请日：2011-01-04

Applicant: Thomas D. Cook ,  Jeffrey C. Cunningham ,  Karthik Ramanan

Inventor： Thomas D. Cook ,  Jeffrey C. Cunningham ,  Karthik Ramanan

IPC: G05F1/10

CPC classification number: H02M3/07

Abstract: An exponential multistage charge pump is disclosed. Node voltages in a pumpcell in one stage of the charge pump are used to control operation of clock drivers in a subsequent stage of the charge pump, thereby eliminating the need for level shifters.

Abstract translation: 公开了一种指数多级电荷泵。 在电荷泵的一级中的泵浦单元中的节点电压用于控制电荷泵的后续阶段中的时钟驱动器的操作，从而不需要电平转换器。

公开(公告)号：US08008964B1

公开(公告)日：2011-08-30

申请号：US12723214

申请日：2010-03-12

Applicant: Thomas D. Cook ,  Jeffrey C. Cunningham ,  Karthik Ramanan

Inventor： Thomas D. Cook ,  Jeffrey C. Cunningham ,  Karthik Ramanan

IPC: G05F1/10

CPC classification number: H02M3/07

Abstract: A device for providing a constant output voltage based on a variable input voltage is provided. The device may include: (1) a charge-pump comprising a plurality of cells, wherein each of the plurality of cells can be configured as an input cell, a stepping cell, or a load cell; (2) a comparator; and (3) a differentiator coupled to the comparator output, wherein the differentiator is configured to monitor the comparator output and produce a reset pulse each time the comparator output changes its state. The device may further include: (1) a decimator; (2) an up/down counter; and (3) a controller for detecting whether the device is operating in a first predetermined mode or a second predetermined mode, wherein the two modes relate to the configuration of the plurality of cells into the input cell, the stepping cell, and/or the load cell.

Abstract translation: 提供了一种基于可变输入电压提供恒定输出电压的装置。 该装置可以包括：（1）包括多个单元的电荷泵，其中多个单元中的每一个可以被配置为输入单元，步进单元或称重传感器; （2）比较器; 和（3）耦合到所述比较器输出的微分器，其中所述微分器被配置为在所述比较器输出改变其状态时监视所述比较器输出并产生复位脉冲。 该装置还可以包括：（1）抽取器; （2）加/减计数器; 以及（3）控制器，用于检测设备是否以第一预定模式或第二预定模式操作，其中两种模式涉及多个单元到输入单元，步进单元和/或 称重传感器。

公开(公告)号：US20110133819A1

公开(公告)日：2011-06-09

申请号：US12633584

申请日：2009-12-08

Applicant: Thomas D. Cook ,  Jeffrey C. Cunningham ,  Karthik Ramanan

Inventor： Thomas D. Cook ,  Jeffrey C. Cunningham ,  Karthik Ramanan

IPC: G05F3/02

CPC classification number: H02M3/073 ,  H02M1/36 ,  H02M2003/077

Abstract: A charge pump and method for starting up a charge pump are provided. The charge pump comprises a plurality of charge pump cells and a start-up control circuit. Each charge pump cell has a clock terminal for receiving a delayed clock signal, an input terminal for receiving an input voltage, and an output terminal for providing a boosted voltage in response to receiving the clock signal and the input voltage. The start-up control circuit is coupled to the clock terminals of each of the plurality of charge pump cells. The start-up control circuit is for delaying the delayed clock signal provided to each charge pump cell of the plurality of charge pump cells. Each of the charge pump cells receives the delayed clock signal having a different predetermined delay so that each of the plurality of charge pump cells are enabled in a predetermined sequence during start-up of the charge pump.

Abstract translation: 提供电荷泵和启动电荷泵的方法。 电荷泵包括多个电荷泵电池和启动控制电路。 每个电荷泵单元具有用于接收延迟时钟信号的时钟端子，用于接收输入电压的输入端子和用于响应于接收时钟信号和输入电压而提供升压电压的输出端子。 启动控制电路耦合到多个电荷泵单元中的每一个的时钟端子。 启动控制电路用于延迟提供给多个电荷泵单元的每个电荷泵单元的延迟时钟信号。 每个电荷泵单元接收具有不同预定延迟的延迟时钟信号，使得多个电荷泵单元中的每一个在电荷泵的启动期间以预定的顺序被使能。

公开(公告)号：US07863876B2

公开(公告)日：2011-01-04

申请号：US12055538

申请日：2008-03-26

Applicant: Thomas D. Cook ,  Tahmina Akhter ,  Jeffrey C. Cunningham

Inventor： Thomas D. Cook ,  Tahmina Akhter ,  Jeffrey C. Cunningham

IPC: G05F1/575

CPC classification number: G05F1/575

Abstract: A reference voltage regulation circuit (143) is provided in which one or more input voltage signals (Vref, Vref′) are selectively coupled to a configurable amplifier (114) which is coupled through a sample and hold circuit (120) to a voltage follower circuit (122) which is coupled in feedback to the configurable amplifier (114) for generating an adjusted output voltage at a circuit output (130), where the voltage follow circuit comprises a resistor divider circuit (126) that is controlled by a calibration signal (Cal ) generated by a counter circuit (128) selectively coupled to the output of the configurable amplifier when configured as a comparator for generating the calibration signal in response to a clock signal, where the calibration signal represents a voltage error component (Verror, Voffset) that is removed from the circuit output when the calibration signal is applied to the resistor divider circuit during normal operational.

Abstract translation: 提供了参考电压调节电路（143），其中一个或多个输入电压信号（Vref，Vref'）选择性地耦合到可配置放大器（114），可配置放大器（114）通过采样和保持电路（120）耦合到电压跟随器 电路（122），其反馈耦合到可配置放大器（114），用于在电路输出（130）处产生调整的输出电压，其中电压跟随电路包括由校准信号控制的电阻分压器电路（126） 当被配置为响应于时钟信号产生校准信号的比较器时，选择性地耦合到可配置放大器的输出的计数器电路（128）产生的校准电路（Cal ），其中校准信号表示电压误差 当在正常操作期间将校准信号施加到电阻分压器电路时，从电路输出移除的分量（Verror，Voffset）。

公开(公告)号：US08476963B2

公开(公告)日：2013-07-02

申请号：US12984258

申请日：2011-01-04

Applicant: Thomas D. Cook ,  Jeffrey C. Cunningham ,  Karthik Ramanan

Inventor： Thomas D. Cook ,  Jeffrey C. Cunningham ,  Karthik Ramanan

IPC: G05F3/08 ,  H02M3/16

CPC classification number: H02M3/07

Abstract: An exponential multistage charge pump is provided wherein node voltages in a pumpcell in one stage of the charge pump are used to control operation of clock drivers in a subsequent stage of the charge pump.

Abstract translation: 提供了一种指数多级电荷泵，其中在电荷泵的一级中的泵浦电池中的节点电压用于控制电荷泵的后续级中的时钟驱动器的操作。

公开(公告)号：US08278977B2

公开(公告)日：2012-10-02

申请号：US12823487

申请日：2010-06-25

Applicant: Thomas D. Cook ,  Jeffrey C. Cunningham ,  Karthik Ramanan

Inventor： Thomas D. Cook ,  Jeffrey C. Cunningham ,  Karthik Ramanan

IPC: H03L7/00

CPC classification number: G06F1/3206 ,  G06F1/3275 ,  G11C5/148 ,  G11C16/30 ,  Y02D10/14

Abstract: A target circuit of an electronic device is placed in a suspended mode by disconnecting the target circuit from one or more voltage sources. A refresh controller periodically initiates a refresh operation during the suspended mode by temporarily reconnecting the target circuit to the one or more voltage sources for a duration sufficient to recharge capacitances of the target circuit. The refresh controller terminates the refresh operation by disconnecting the target circuit from the one or more voltage sources, thereby continuing the suspended mode of the electronic device. The refresh controller can employ a Very Low Frequency Oscillator (VLFO) to time the frequency of refresh operations. The VLFO manages the refresh initialization timing based on the voltage across a capacitor that is selectively charged or discharged so as to implement the refresh operation. The refresh controller further can employ a counter to time the duration of the refresh operation.

Abstract translation: 通过将目标电路与一个或多个电压源断开而将电子设备的目标电路置于暂停模式。 刷新控制器在暂停模式期间周期性地启动刷新操作，通过将目标电路临时重新连接到一个或多个电压源，持续时间足以再充电目标电路的电容。 刷新控制器通过将目标电路与一个或多个电压源断开而终止刷新操作，由此继续电子设备的挂起模式。 刷新控制器可以使用超低频振荡器（VLFO）来计时刷新操作的频率。 VLFO基于选择性地充电或放电的电容器上的电压来管理刷新初始化时序，以便实现刷新操作。 刷新控制器还可以使用计数器来刷新操作的持续时间。

公开(公告)号：US20110221511A1

公开(公告)日：2011-09-15

申请号：US12723214

申请日：2010-03-12

Applicant: Thomas D. Cook ,  Jeffrey C. Cunningham ,  Karthik Ramanan

Inventor： Thomas D. Cook ,  Jeffrey C. Cunningham ,  Karthik Ramanan

IPC: G05F1/10

CPC classification number: H02M3/07

Abstract: A device for providing a constant output voltage based on a variable input voltage is provided. The device may include: (1) a charge-pump comprising a plurality of cells, wherein each of the plurality of cells can be configured as an input cell, a stepping cell, or a load cell; (2) a comparator; and (3) a differentiator coupled to the comparator output, wherein the differentiator is configured to monitor the comparator output and produce a reset pulse each time the comparator output changes its state. The device may further include: (1) a decimator; (2) an up/down counter; and (3) a controller for detecting whether the device is operating in a first predetermined mode or a second predetermined mode, wherein the two modes relate to the configuration of the plurality of cells into the input cell, the stepping cell, and/or the load cell.

Abstract translation: 提供了一种基于可变输入电压提供恒定输出电压的装置。 该装置可以包括：（1）包括多个单元的电荷泵，其中多个单元中的每一个可以被配置为输入单元，步进单元或称重传感器; （2）比较器; 和（3）耦合到所述比较器输出的微分器，其中所述微分器被配置为在所述比较器输出改变其状态时监视所述比较器输出并产生复位脉冲。 该装置还可以包括：（1）抽取器; （2）加/减计数器; 以及（3）控制器，用于检测设备是否以第一预定模式或第二预定模式操作，其中两种模式涉及多个单元到输入单元，步进单元和/或 称重传感器。

公开(公告)号：US07965130B1

公开(公告)日：2011-06-21

申请号：US12633584

申请日：2009-12-08

Applicant: Thomas D. Cook ,  Jeffrey C. Cunningham ,  Karthik Ramanan

Inventor： Thomas D. Cook ,  Jeffrey C. Cunningham ,  Karthik Ramanan

IPC: G05F1/10

CPC classification number: H02M3/073 ,  H02M1/36 ,  H02M2003/077

Abstract: A charge pump and method for starting up a charge pump are provided. The charge pump comprises a plurality of charge pump cells and a start-up control circuit. Each charge pump cell has a clock terminal for receiving a delayed clock signal, an input terminal for receiving an input voltage, and an output terminal for providing a boosted voltage in response to receiving the clock signal and the input voltage. The start-up control circuit is coupled to the clock terminals of each of the plurality of charge pump cells. The start-up control circuit is for delaying the delayed clock signal provided to each charge pump cell of the plurality of charge pump cells. Each of the charge pump cells receives the delayed clock signal having a different predetermined delay so that each of the plurality of charge pump cells are enabled in a predetermined sequence during start-up of the charge pump.

Abstract translation: 提供电荷泵和启动电荷泵的方法。 电荷泵包括多个电荷泵电池和启动控制电路。 每个电荷泵单元具有用于接收延迟时钟信号的时钟端子，用于接收输入电压的输入端子和用于响应于接收时钟信号和输入电压而提供升压电压的输出端子。 启动控制电路耦合到多个电荷泵单元中的每一个的时钟端子。 启动控制电路用于延迟提供给多个电荷泵单元的每个电荷泵单元的延迟时钟信号。 每个电荷泵单元接收具有不同预定延迟的延迟时钟信号，使得多个电荷泵单元中的每一个在电荷泵的启动期间以预定的顺序被使能。

公开(公告)号：US20090097285A1

公开(公告)日：2009-04-16

申请号：US11870259

申请日：2007-10-10

Applicant: Thomas D. Cook ,  Tahmina Akhter ,  Jeffrey C. Cunningham

Inventor： Thomas D. Cook ,  Tahmina Akhter ,  Jeffrey C. Cunningham

IPC: H02M3/04

CPC classification number: H02M3/07

Abstract: A charge-based voltage multiplier device comprising a charge-pump circuit and a charge-pump controller is provided. The charge-pump circuit is configured to multiply an input voltage signal (Vin) into an output voltage signal (Vout), the charge-pump circuit includes a plurality of charge-pump stages, wherein at least one of the charge-pump stages includes a weighted capacitor array of pump cells. The charge-pump controller is configured to provide a pump cell select to selectively control the weighted capacitor array of pump cells of the at least one of the charge-pump stages of the charge-pump circuit.

Abstract translation: 提供了一种基于电荷的电压倍增器装置，其包括电荷泵电路和电荷泵控制器。 电荷泵电路被配置为将输入电压信号（Vin）乘以输出电压信号（Vout），电荷泵电路包括多个电荷泵级，其中至少一个电荷泵级包括 泵电池的加权电容器阵列。 电荷泵控制器被配置为提供泵电池选择以选择性地控制电荷泵电路的至少一个电荷泵级的泵电池的加权电容器阵列。