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1. 发明申请

WO2009151798A1 CHARGE PUMP WITH Vt CANCELLATION THROUGH PARALLEL STRUCTURE 审中-公开
标题翻译：充电泵通过并联结构取消
公开(公告)号：WO2009151798A1
公开(公告)日：2009-12-17
申请号：PCT/US2009/041714
申请日：2009-04-24
申请人： SANDISK CORPORATION , PAN, Feng , HUYNH, Jonathan, H.
发明人： PAN, Feng , HUYNH, Jonathan, H.
IPC分类号： H02M3/07
CPC分类号： H02M3/07
摘要： A charge pump circuit for generating an output voltage is described. The charge pump includes an output generation section and a threshold voltage cancellation section, where these sections have the same structure including a first branch, which receives a first clock signal and provides a first output, and a second branch, which receives a second clock signal and provides a second output. The charge pump circuit also includes first and second transistors, where the first and second outputs of the output generation stage are respectively connected through the first and second transistors to provide the output voltage of the charge pump, and where the first and second outputs of the threshold voltage cancellation stage are respectively connected to the control gate the first and second transistors.
摘要翻译：描述用于产生输出电压的电荷泵电路。电荷泵包括输出产生部分和阈值电压消除部分，其中这些部分具有相同的结构，包括接收第一时钟信号并提供第一输出的第一分支和接收第二时钟信号的第二分支并提供第二输出。电荷泵电路还包括第一和第二晶体管，其中输出发生级的第一和第二输出分别通过第一和第二晶体管连接以提供电荷泵的输出电压，并且其中第一和第二输出的第一和第二输出阈值电压消除级分别与第一和第二晶体管的控制栅极连接。

2. 发明申请

WO2009076277A1 LOW VOLTAGE CHARGE PUMP WITH REGULATION 审中-公开
标题翻译：低压充电泵与调节
公开(公告)号：WO2009076277A1
公开(公告)日：2009-06-18
申请号：PCT/US2008/085827
申请日：2008-12-08
申请人： SANDISK CORPORATION , PAN, Feng , HUYNH, Jonathan H. , NGUYEN, Qui Vi
发明人： PAN, Feng , HUYNH, Jonathan H. , NGUYEN, Qui Vi
IPC分类号： H02M3/07
CPC分类号： H02M3/07
摘要： Techniques of providing a low output voltage, high current capability charge pump are given. The charge pump has multiple capacitors along with switching circuitry. In an initialization phase, the first plate of each of the capacitors is connected to receive a regulator voltage and the second plate of each capacitor is connected to ground. In a transfer phase, the capacitors are connected in series, where, for each capacitor after the first, the second plate is connected to the first plate of the preceding capacitor in the series. The output voltage of the pump is from the first plate of the last capacitor in the series. Regulation circuitry generates the regulator voltage from a reference voltage to have a value responsive to the output voltage level of the pump.
摘要翻译：给出了提供低输出电压，高电流能力的电荷泵的技术。电荷泵具有多个电容器以及开关电路。在初始化阶段，每个电容器的第一板被连接以接收稳压器电压，并且每个电容器的第二板连接到地。在转移阶段，电容器串联连接，其中，对于每个电容器，在第一个电容器之后，第二个板件被连接到串联的前一个电容器的第一个板上。泵的输出电压来自串联的最后一个电容器的第一个板。调节电路从参考电压产生调节器电压，以响应于泵的输出电压电平。

3. 发明申请

WO2008083292A1 GENERATION OF ANALOG VOLTAGE USING SELF-BIASED CAPACITIVE FEEDBACK STAGE 审中-公开
标题翻译：使用自偏置电容反馈阶段产生模拟电压
公开(公告)号：WO2008083292A1
公开(公告)日：2008-07-10
申请号：PCT/US2007/089072
申请日：2007-12-28
申请人： SANDISK CORPORATION , PAN, Feng
发明人： PAN, Feng
IPC分类号： G11C16/06
CPC分类号： G11C16/30 , G11C5/147
摘要： Analog voltage drain with reduced current drain is achieved by a new capacitive-divided feedback architecture. During the operational phase an op amp monitors a capacitively-divided fraction of the output voltage, and drives a current sink or source accordingly; during an initial phase the output is forced to the correct value by a different circuit, while the opamp is connected to self-tune itself in a way which removes DC offset effects.
摘要翻译：具有减少电流消耗的模拟电压消耗通过新的电容分压反馈架构实现。在运行阶段，运算放大器监视输出电压的电容分数，相应地驱动电流接收器或源; 在初始阶段，输出通过不同的电路被强制为正确的值，而运算放大器被连接到以自动调整自身的方式来消除DC偏移效应。

4. 发明申请

WO2008016571A1 HYBRID CHARGE PUMP REGULATION WITH SELECTABLE FEEDBACK CIRCUITS 审中-公开
标题翻译：混合充电泵调节与可选择的反馈电路
公开(公告)号：WO2008016571A1
公开(公告)日：2008-02-07
申请号：PCT/US2007/017043
申请日：2007-07-30
申请人： SANDISK CORPORATION , PAN, Feng
发明人： PAN, Feng
IPC分类号： G11C5/14
CPC分类号： G11C5/147 , G11C5/145
摘要： Techniques for reliably and efficiently generating an output voltage (VOLT) for use within an electronic device, such as a memory system, are disclosed. A voltage generation circuit (502) generates the output voltage. The voltage generation circuit includes regulation circuitry that controls regulation of the output voltage to maintain the output voltage at a substantially constant level. According to one aspect, regulation is provided through use of different feedback circuits. By selectively disabling one (503) of the feedback circuits, power consumption can be reduced and the other of the feedback circuits (504) can support the continued regulation of the output voltage. The voltage generation circuit is therefore able to operate in an accurate, stable and power efficient manner.
摘要翻译：公开了用于可靠且有效地产生用于诸如存储器系统的电子设备内的输出电压（VOLT）的技术。电压产生电路（502）产生输出电压。电压产生电路包括调节电路，其控制输出电压的调节以将输出电压维持在基本上恒定的水平。根据一个方面，通过使用不同的反馈电路来提供调节。通过选择性地禁用一个（503）反馈电路，可以降低功耗，并且反馈电路（504）中的另一个可以支持输出电压的持续调节。因此，电压产生电路能够以精确，稳定和功率效率的方式工作。

5. 发明申请

WO2008036609A2 IMPLEMENTATION OF OUTPUT FLOATING SCHEME FOR HV CHARGE PUMPS 审中-公开
标题翻译：高压充电泵输出浮动方案的实现
公开(公告)号：WO2008036609A2
公开(公告)日：2008-03-27
申请号：PCT/US2007/078667
申请日：2007-09-17
申请人： SANDISK CORPORATION , GOVINDU, Prashanti , PAN, Feng , MUI, Man , KWON, Gyuwan , PHAM, Trung , WANG, Chi-Ming
发明人： GOVINDU, Prashanti , PAN, Feng , MUI, Man , KWON, Gyuwan , PHAM, Trung , WANG, Chi-Ming
CPC分类号： G11C16/30 , G11C5/145
摘要： According to different embodiments of the present invention, various methods, devices and systems are described for managing power in charge pumps in a non-volatile memory system having a high voltage charge pump and associated regulator. A method includes the following operations, receiving an operation command corresponding to an operation, pumping up a charge pump output voltage to a desired output voltage, turning off the regulator and the charge pump when the output voltage is approximately the desired output voltage compensating for charge sharing by turning on the charge pump and setting a pump clock rate to a slow clock rate in order to avoid overshooting the desired output voltage by the charge pump while the operation is being carried out, and compensating for junction leakage by turning on the regulator and the charge pump until the charge pump output voltage is the desired output voltage.
摘要翻译：根据本发明的不同实施例，描述了用于管理具有高电压电荷泵和相关联的调节器的非易失性存储器系统中的电荷泵中的功率的各种方法，设备和系统。一种方法包括以下操作：接收对应于操作的操作命令，将电荷泵输出电压上升到期望的输出电压，当输出电压近似为补偿电荷的期望输出电压时关闭调节器和电荷泵通过打开电荷泵并将泵时钟速率设置为较慢的时钟速率来共享，以避免在执行操作时通过电荷泵超出期望的输出电压，并且通过接通调节器来补偿结泄漏并且电荷泵，直到电荷泵输出电压是所需的输出电压。

6. 发明申请

WO2003067597A3 IMPLEMENTATION OF AN INHIBIT DURING SOFT PROGRAMMING TO TIGHTEN AN ERASE VOLTAGE DISTRIBUTION 审中-公开
公开(公告)号：WO2003067597A3
公开(公告)日：2003-08-14
申请号：PCT/US2003/003710
申请日：2003-02-06
申请人： SANDISK CORPORATION , PAN, Feng , YU,Tat-Kwan, Edgar
发明人： PAN, Feng , YU,Tat-Kwan, Edgar
IPC分类号： G11C16/34
摘要： Methods and apparatus for tightening an erased bit threshold voltage distribution are disclosed. According to one aspect of the present invention, a method for processing erased bits associated with an erased bit distribution which includes an over-erased bit which has a first value that is less than a first threshold voltage value and a bit that has a second value that substantially exceeds a second threshold voltage value includes inhibiting the fast bit. The method also includes applying a soft program pulse to the erased bits such that inhibiting the fast bit substantially prevents the second value from changing and applying the soft program pulse to the over-erased bit substantially causes the first value to increase. In one embodiment, applying the soft program pulse to the over-erased bit substantially causes the first value to increase to a value that is greater than or equal to the first threshold voltage value.

7. 发明申请

WO2009076137A1 DIODE CONNECTED REGULATION OF CHARGE PUMPS 审中-公开
标题翻译：充电泵的二极管连接调节
公开(公告)号：WO2009076137A1
公开(公告)日：2009-06-18
申请号：PCT/US2008/085429
申请日：2008-12-03
申请人： SANDISK CORPORATION , PAN, Feng , HUYNH, Jonathan H.
发明人： PAN, Feng , HUYNH, Jonathan H.
IPC分类号： H02M3/07 , G11C5/14
CPC分类号： H02M3/073 , G11C5/145
摘要： A circuit including a charge pump (601) and regulation circuitry (603) is described. The output of the charge pump is connected to provide a first output signal (VTOP) that is connectable to drive a load (623). A diode (611) is connected to provide a second output signal (VBOT) of lower voltage from the first output signal. The regulation circuitry (603) is connected to the second output level (VBOT) and is connectable to the charge pump (601) to regulate its output. The circuit also includes a current source (651) connectable from the second line to ground, where control circuitry connects the current source to the second line when the first line is connected to the load.
摘要翻译：描述了包括电荷泵（601）和调节电路（603）的电路。电荷泵的输出被连接以提供可连接以驱动负载（623）的第一输出信号（VTOP）。连接二极管（611）以从第一输出信号提供较低电压的第二输出信号（VBOT）。调节电路（603）连接到第二输出电平（VBOT），并且可连接到电荷泵（601）以调节其输出。电路还包括可从第二线路连接到地的电流源（651），其中当第一线路连接到负载时，控制电路将电流源连接到第二线路。

8. 发明申请

WO2005111757A1 FOUR PHASE CHARGE PUMP OPERABLE WITHOUT PHASE OVERLAP WITH IMPROVED EFFICIENCY 审中-公开
标题翻译：四相充电泵可以在没有相位覆盖的情况下运行，而且可以提高效率
公开(公告)号：WO2005111757A1
公开(公告)日：2005-11-24
申请号：PCT/US2005/015762
申请日：2005-05-05
申请人： SANDISK CORPORATION , PAN, Feng , PHAM, Trung
发明人： PAN, Feng , PHAM, Trung
IPC分类号： G05F1/10
CPC分类号： H02M3/073 , H02M2003/075 , H02M2003/078
摘要： In a Dickson type charge pump in which a plurality of serially connected diodes sequentially respond to anti-phase 50/50 clock cross over or overlapped (f1, f2), efficiency of the charge pump is increased by providing with each diode a charge transfer transistor in parallel therewith between two adjacent nodes, and driving the charge transfer transistor to conduction during a time when the parallel diode is conducting thereby transferring any residual trapped charge at one node through the charge transfer transistor to the next node. Operating frequency can be increased by providing a pre-charge diode coupling an input node to the gate of the charge transfer transistor to facilitate conductance of the charge transfer transistor, and by coupling the control terminal of the charge transfer transistor to an input node in response to charge on an output node to thereby equalize charge on the control terminal and on the input node during a recovery period.
摘要翻译：在其中多个串联连接的二极管顺序响应于反相50/50时钟交叉或重叠（f1，f2）的迪克森型电荷泵中，通过向每个二极管提供电荷转移晶体管来增加电荷泵的效率在两个相邻节点之间并联，并且在并联二极管导通的时间期间驱动电荷转移晶体管导通，由此将一个节点处的任何残余俘获电荷通过电荷转移晶体管传输到下一个节点。可以通过提供将输入节点耦合到电荷转移晶体管的栅极的预充电二极管来提高工作频率，以促进电荷转移晶体管的电导，并且通过将电荷转移晶体管的控制端子耦合到输入节点作为响应在输出节点上进行充电，从而在恢复期间均衡控制终端和输入节点上的电荷。

9. 发明申请

WO2003067597A2 IMPLEMENTATION OF AN INHIBIT DURING SOFT PROGRAMMING TO TIGHTEN AN ERASE VOLTAGE DISTRIBUTION 审中-公开
标题翻译：在软编程期间实施禁止擦除擦除电压分配
公开(公告)号：WO2003067597A2
公开(公告)日：2003-08-14
申请号：PCT/US2003/003710
申请日：2003-02-06
申请人： SANDISK CORPORATION , PAN, Feng , YU,Tat-Kwan, Edgar
发明人： PAN, Feng , YU,Tat-Kwan, Edgar
IPC分类号： G11C
CPC分类号： G11C16/3404
摘要： Methods and apparatus for tightening an erased bit threshold voltage distribution are disclosed. According to one aspect of the present invention, a method for processing erased bits associated with an erased bit distribution which includes an over-erased bit which has a first value that is less than a first threshold voltage value and a bit that has a second value that substantially exceeds a second threshold voltage value includes inhibiting the fast bit. The method also includes applying a soft program pulse to the erased bits such that inhibiting the fast bit substantially prevents the second value from changing and applying the soft program pulse to the over-erased bit substantially causes the first value to increase. In one embodiment, applying the soft program pulse to the over-erased bit substantially causes the first value to increase to a value that is greater than or equal to the first threshold voltage value.
摘要翻译：公开了用于收紧擦除比特阈值电压分布的方法和装置。根据本发明的一个方面，一种用于处理与擦除比特分布相关联的擦除比特的方法，所述擦除比特分布包括具有小于第一阈值电压值的第一值的过擦除比特和具有第二值的比特基本上超过第二阈值电压值的步骤包括禁止所述快速位。该方法还包括将软编程脉冲施加到擦除比特，使得禁止快速比特基本上防止第二值改变并且将软编程脉冲施加到超出擦除比特大体上导致第一值增加。在一个实施例中，将软编程脉冲施加到过度擦除位实质上导致第一值增加到大于或等于第一阈值电压值的值。

10. 发明申请

WO2011084403A1 TECHNIQUES TO REDUCE CHARGE PUMP OVERSHOOT 审中-公开
标题翻译：减少充气泵的技术
公开(公告)号：WO2011084403A1
公开(公告)日：2011-07-14
申请号：PCT/US2010/060195
申请日：2010-12-14
申请人： SANDISK CORPORATION , PAN, Feng
发明人： PAN, Feng
IPC分类号： G11C5/14 , G11C16/30 , H02M3/07 , H03K19/00
CPC分类号： G11C5/145 , H02M3/073
摘要： A charge pump system for supplying an output voltage to a load is described. The charge pump system includes a charge pump connected to receive an input voltage generate from it the output voltage. The system also includes regulation circuitry connected to receive the output voltage and a reference voltage, where the regulation circuitry is connected to the charge pump to regulate the output voltage based upon the values of the reference voltage and the output voltage. During ramp up or a recovery operation the output voltage is initially regulated according to a first level and subsequently regulated to a second level higher than the first level, the second level corresponding to a desired regulated output voltage.
摘要翻译：描述用于向负载提供输出电压的电荷泵系统。电荷泵系统包括电荷泵，其连接以接收从其产生的输入电压的输出电压。该系统还包括连接以接收输出电压和参考电压的调节电路，其中调节电路连接到电荷泵，以基于参考电压和输出电压的值来调节输出电压。在升高或恢复操作期间，输出电压最初根据第一电平进行调节，随后被调节到高于第一电平的第二电平，第二电平对应于期望的调节输出电压。

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