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1. 发明申请

US20110316592A1 REFRESH OPERATION DURING LOW POWER MODE CONFIGURATION 有权
标题翻译：低功耗模式配置时的刷新操作
公开(公告)号：US20110316592A1
公开(公告)日：2011-12-29
申请号：US12823487
申请日：2010-06-25
申请人： Thomas D. Cook , Jeffrey C. Cunningham , Karthik Ramanan
发明人： Thomas D. Cook , Jeffrey C. Cunningham , Karthik Ramanan
IPC分类号： H03L7/00
CPC分类号： G06F1/3206 , G06F1/3275 , G11C5/148 , G11C16/30 , Y02D10/14
摘要： 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.
摘要翻译：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。

2. 发明授权

US08040700B2 Charge pump for use with a synchronous load 有权
标题翻译：充电泵用于同步负载
公开(公告)号：US08040700B2
公开(公告)日：2011-10-18
申请号：US12619303
申请日：2009-11-16
申请人： Thomas D. Cook , Jeffrey C. Cunningham , Karthik Ramanan
发明人： Thomas D. Cook , Jeffrey C. Cunningham , Karthik Ramanan
IPC分类号： H02M3/18
CPC分类号： H02M3/07
摘要： A charge pump has circuitry and implements a method for monitoring a synchronous load by using a first voltage threshold below a target output voltage and a second voltage threshold above a target output voltage. An output terminal is coupled to the load. Charge is demanded by clocking the load. When the target output voltage passes below the first voltage threshold, a first value representing a present size of a charging capacitance is stored as a stored first value, and a second stored value representing a needed changed size of the charging capacitance is used. The present size of the charging capacitance is changed in response to the passing of the target output voltage below the first voltage threshold. When demand for charge from the load is reduced, a present value is saved and a prior value is restored to change the size of the charging capacitance.
摘要翻译：电荷泵具有电路并且实现了通过使用低于目标输出电压的第一电压阈值和高于目标输出电压的第二电压阈值来监视同步负载的方法。输出端子耦合到负载。通过计时负载需要充电。当目标输出电压通过低于第一电压阈值时，表示充电电容的当前尺寸的第一值被存储为存储的第一值，并且使用表示充电电容所需改变的尺寸的第二存储值。响应于目标输出电压的通过低于第一电压阈值，充电电容的当前尺寸被改变。当减少对负载的充电需求时，保存当前值并恢复先前值以改变充电电容的尺寸。

3. 发明授权

US07948301B2 Charge pump with charge feedback and method of operation 有权
标题翻译：充电泵具有充电反馈和操作方法
公开(公告)号：US07948301B2
公开(公告)日：2011-05-24
申请号：US12549499
申请日：2009-08-28
申请人： Thomas D. Cook , Jeffrey C. Cunningham , Karthik Ramanan
发明人： Thomas D. Cook , Jeffrey C. Cunningham , Karthik Ramanan
IPC分类号： G05F1/10
CPC分类号： H02M3/07 , H02M2003/077
摘要： A charge pump charges a first capacitor to a predetermined input voltage using a first switch. The first switch is coupled to a first terminal of the first capacitor for coupling the first terminal to an input terminal that receives the predetermined input voltage. A second switch couples a second terminal of the first capacitor to a reference voltage terminal. Charge is sequentially transferred from the first capacitor to an output capacitance by using the first switch. A portion of charge is sequentially removed from the output capacitance to the input terminal using a third switch and a second capacitor. Configuration logic provides control signals to make one or more of a plurality of charge transfer capacitors switch the same as said first capacitor switches.
摘要翻译：电荷泵使用第一开关将第一电容器充电至预定的输入电压。第一开关耦合到第一电容器的第一端子，用于将第一端子耦合到接收预定输入电压的输入端子。第二开关将第一电容器的第二端子耦合到参考电压端子。通过使用第一开关将充电从第一电容器依次传送到输出电容。使用第三开关和第二电容器将一部分电荷从输出电容顺序地移除到输入端。配置逻辑提供控制信号以使得多个电荷转移电容器中的一个或多个与所述第一电容器开关相同。

4. 发明申请

US20110115549A1 CHARGE PUMP FOR USE WITH A SYNCHRONOUS LOAD 有权
标题翻译：充电泵与同步负载一起使用
公开(公告)号：US20110115549A1
公开(公告)日：2011-05-19
申请号：US12619303
申请日：2009-11-16
申请人： Thomas D. Cook , Jeffrey C. Cunningham , Karthik Ramanan
发明人： Thomas D. Cook , Jeffrey C. Cunningham , Karthik Ramanan
IPC分类号： G05F1/10
CPC分类号： H02M3/07
摘要： A charge pump has circuitry and implements a method for monitoring a synchronous load by using a first voltage threshold below a target output voltage and a second voltage threshold above a target output voltage. An output terminal is coupled to the load. Charge is demanded by clocking the load. When the target output voltage passes below the first voltage threshold, a first value representing a present size of a charging capacitance is stored as a stored first value, and a second stored value representing a needed changed size of the charging capacitance is used. The present size of the charging capacitance is changed in response to the passing of the target output voltage below the first voltage threshold. When demand for charge from the load is reduced, a present value is saved and a prior value is restored to change the size of the charging capacitance.
摘要翻译：电荷泵具有电路并且实现了通过使用低于目标输出电压的第一电压阈值和高于目标输出电压的第二电压阈值来监视同步负载的方法。输出端子耦合到负载。通过计时负载需要充电。当目标输出电压通过低于第一电压阈值时，表示充电电容的当前尺寸的第一值被存储为存储的第一值，并且使用表示充电电容所需改变的尺寸的第二存储值。响应于目标输出电压的通过低于第一电压阈值，充电电容的当前尺寸被改变。当减少对负载的充电需求时，保存当前值并恢复先前值以改变充电电容的尺寸。

5. 发明授权

US08310300B2 Charge pump having ramp rate control 有权
标题翻译：电荷泵具有斜坡率控制
公开(公告)号：US08310300B2
公开(公告)日：2012-11-13
申请号：US12870464
申请日：2010-08-27
申请人： Thomas D. Cook , Jeffrey C. Cunningham , Karthik Ramanan
发明人： Thomas D. Cook , Jeffrey C. Cunningham , Karthik Ramanan
IPC分类号： G05F1/10 , G05F3/02
CPC分类号： H02M3/07
摘要： 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.
摘要翻译：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。

6. 发明申请

US20120169404A1 Exponential Charge Pump 有权
标题翻译：指数电荷泵
公开(公告)号：US20120169404A1
公开(公告)日：2012-07-05
申请号：US12984258
申请日：2011-01-04
申请人： Thomas D. Cook , Jeffrey C. Cunningham , Karthik Ramanan
发明人： Thomas D. Cook , Jeffrey C. Cunningham , Karthik Ramanan
IPC分类号： G05F1/10
CPC分类号： H02M3/07
摘要： 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.
摘要翻译：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。

7. 发明授权

US08008964B1 Variable input voltage charge pump 有权
标题翻译：可变输入电压电荷泵
公开(公告)号：US08008964B1
公开(公告)日：2011-08-30
申请号：US12723214
申请日：2010-03-12
申请人： Thomas D. Cook , Jeffrey C. Cunningham , Karthik Ramanan
发明人： Thomas D. Cook , Jeffrey C. Cunningham , Karthik Ramanan
IPC分类号： G05F1/10
CPC分类号： H02M3/07
摘要： 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.
摘要翻译：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。

8. 发明申请

US20110133819A1 LOW POWER CHARGE PUMP AND METHOD OF OPERATION 有权
标题翻译：低功率充电泵和操作方法
公开(公告)号：US20110133819A1
公开(公告)日：2011-06-09
申请号：US12633584
申请日：2009-12-08
申请人： Thomas D. Cook , Jeffrey C. Cunningham , Karthik Ramanan
发明人： Thomas D. Cook , Jeffrey C. Cunningham , Karthik Ramanan
IPC分类号： G05F3/02
CPC分类号： H02M3/073 , H02M1/36 , H02M2003/077
摘要： 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.
摘要翻译：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。

9. 发明申请

US20110050326A1 CHARGE PUMP WITH CHARGE FEEDBACK AND METHOD OF OPERATION 有权
标题翻译：带充电反馈的充电泵和操作方法
公开(公告)号：US20110050326A1
公开(公告)日：2011-03-03
申请号：US12549499
申请日：2009-08-28
申请人： Thomas D. Cook , Jeffrey C. Cunningham , Karthik Ramanan
发明人： Thomas D. Cook , Jeffrey C. Cunningham , Karthik Ramanan
IPC分类号： G05F1/10
CPC分类号： H02M3/07 , H02M2003/077
摘要： A charge pump charges a first capacitor to a predetermined input voltage using a first switch. The first switch is coupled to a first terminal of the first capacitor for coupling the first terminal to an input terminal that receives the predetermined input voltage. A second switch couples a second terminal of the first capacitor to a reference voltage terminal. Charge is sequentially transferred from the first capacitor to an output capacitance by using the first switch. A portion of charge is sequentially removed from the output capacitance to the input terminal using a third switch and a second capacitor. Configuration logic provides control signals to make one or more of a plurality of charge transfer capacitors switch the same as said first capacitor switches.
摘要翻译：电荷泵使用第一开关将第一电容器充电至预定的输入电压。第一开关耦合到第一电容器的第一端子，用于将第一端子耦合到接收预定输入电压的输入端子。第二开关将第一电容器的第二端子耦合到参考电压端子。通过使用第一开关将充电从第一电容器依次传送到输出电容。使用第三开关和第二电容器将一部分电荷从输出电容顺序地移除到输入端。配置逻辑提供控制信号以使得多个电荷转移电容器中的一个或多个与所述第一电容器开关相同。

10. 发明授权

US08476963B2 Exponential charge pump 有权
标题翻译：指数电荷泵
公开(公告)号：US08476963B2
公开(公告)日：2013-07-02
申请号：US12984258
申请日：2011-01-04
申请人： Thomas D. Cook , Jeffrey C. Cunningham , Karthik Ramanan
发明人： Thomas D. Cook , Jeffrey C. Cunningham , Karthik Ramanan
IPC分类号： G05F3/08 , H02M3/16
CPC分类号： H02M3/07
摘要： 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.
摘要翻译：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。

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