公开(公告)号：US06657876B2

公开(公告)日：2003-12-02

申请号：US10178840

申请日：2002-06-25

申请人： Tsutomu Satoh

发明人： Tsutomu Satoh

IPC分类号： H02M318

CPC分类号： H02M3/073 ,  H02J7/0065 ,  H02M2003/077

摘要： To permit a switched-capacitor-type stabilized power supply device to operate stably until the battery power falls considerably low, it needs to be provided with a voltage step-up circuit with a high voltage step-up factor. However, inconveniently, in a conventional switched-capacitor-type stabilized power supply device, increasing the voltage step-up factor of the voltage step-up circuit increases the difference between the voltage stepped-up by the voltage step-up circuit when the battery voltage is still high and the set output voltage, and thus lowers power conversion efficiency. By contrast, a switched-capacitor-type stabilized power supply device of the invention has a plurality of voltage step-up circuits each having a different voltage step-up factor, a switching circuit for connecting and disconnecting an input terminal, to which a direct-current voltage is applied, to and from the voltage step-up circuits, and a switching control circuit for controlling the switching circuit according to the input level to and/or the output level from the switched-capacitor-type stabilized power supply device.

公开(公告)号：US06654263B2

公开(公告)日：2003-11-25

申请号：US10127410

申请日：2002-04-23

申请人： Satoru Kurotsu

发明人： Satoru Kurotsu

IPC分类号： H02M318

CPC分类号： H02M3/07

摘要： A reference voltage for obtaining a desired output voltage value, and an output voltage are inputted to an operational amplifier. A PMOS transistor whose on/off operation is controlled by the operational amplifier, outputs an internal node voltage therefrom. A switch control circuit outputs a signal constant in duty ratio, for activating CHG switches and DCHG switches respectively. A voltage dividing capacitor and an output capacitor respectively repeat charging and discharging based on a switching pulse constant in duty ratio. Accordingly, a stable output voltage obtained by series/parallel connection switching operations of two capacitors results in ½ of the internal node voltage.

摘要翻译： 用于获得期望输出电压值的参考电压和输出电压被输入到运算放大器。 由运算放大器控制其导通/截止操作的PMOS晶体管从其输出内部节点电压。 开关控制电路输出占空比恒定的信号，用于分别激活CHG开关和DCHG开关。 分压电容器和输出电容器分别基于占空比中的开关脉冲常数重复充电和放电。 因此，通过两个电容器的串联/并联连接切换操作获得的稳定输出电压导致内部节点电压的1/2。

公开(公告)号：US06556064B1

公开(公告)日：2003-04-29

申请号：US09520787

申请日：2000-03-08

申请人： Satoshi Yatabe

发明人： Satoshi Yatabe

IPC分类号： H02M318

CPC分类号： H02M3/07

摘要： A voltage booster method and circuit reduce the number of capacitors required for a voltage boost. First, a first terminal of a first auxiliary capacitor is connected to a ground line and a second terminal of the first auxiliary capacitor is connected to the supply line of an input voltage. Second, a first terminal of a second auxiliary capacitor is connected to the ground line, the first terminal of the first auxiliary capacitor is switched to the supply line of the input voltage, and the second terminal of the first auxiliary capacitor is switched and connected to a second terminal of the second auxiliary capacitor. Third, the first terminal of the second auxiliary capacitor is switched to the second terminal of the first auxiliary capacitor, and the second terminal of the second auxiliary capacitor is switched and connected to the output line.

摘要翻译： 升压方法和电路减少了升压所需的电容器数量。 首先，第一辅助电容器的第一端子连接到地线，并且第一辅助电容器的第二端子连接到输入电压的电源线。 其次，将第二辅助电容器的第一端子连接到地线，将第一辅助电容器的第一端子切换到输入电压的电源线，并且将第一辅助电容器的第二端子切换并连接到 第二辅助电容器的第二端子。 第三，将第二辅助电容器的第一端子切换到第一辅助电容器的第二端子，并且将第二辅助电容器的第二端子切换并连接到输出线路。

公开(公告)号：US06522558B2

公开(公告)日：2003-02-18

申请号：US09880626

申请日：2001-06-12

申请人： George C. Henry

发明人： George C. Henry

IPC分类号： H02M318

CPC分类号： H02M3/07 ,  H02M2003/072

摘要： A charge pump receives a direct current input voltage at a first level and provides a substantially constant direct current output voltage at a second level. Variations of the input voltage level above and below the output voltage level are handled seamlessly by a continuous mode control scheme that controls a charging current of the charge pump. The charge pump includes an error amplifier which produces a control signal based on a comparison of a feedback voltage proportional to the output voltage and a reference voltage. The control signal controls a variable current source to regulate the charging current provided to a charge storage component.

公开(公告)号：US06473321B2

公开(公告)日：2002-10-29

申请号：US09883237

申请日：2001-06-19

申请人： Jiro Kishimoto ,  Hiroshi Sato ,  Satoshi Noda ,  Tatsuya Ishii ,  Shoji Kubono ,  Takashi Ogino

发明人： Jiro Kishimoto ,  Hiroshi Sato ,  Satoshi Noda ,  Tatsuya Ishii ,  Shoji Kubono ,  Takashi Ogino

IPC分类号： H02M318

CPC分类号： H02M3/073 ,  G11C16/30 ,  H02M2003/075

摘要： For a semiconductor integrated circuit having an internal booster circuit such as a flash memory, voltage booster circuits capable of generating a boosted voltage 10 times or more as high as a relatively low source voltage is to be realized. Charge pumps for carrying out first stage voltage boosting on the basis of a source voltage are configured of parallel capacity type units, and charge pumps for carrying out second stage voltage boosting on the basis of the boosted voltage generated by the first charge pumps are configured of serial capacity type units.

摘要翻译： 对于具有诸如闪速存储器的内部升压电路的半导体集成电路，可以实现能够产生相当低的源电压的10倍或更高的升压电压的升压电路。 基于源电压进行第一级升压的充电泵由并联容量型单元构成，并且基于由第一电荷泵产生的升压电压进行第二级升压的电荷泵由 串口容量型号。

公开(公告)号：US06317344B1

公开(公告)日：2001-11-13

申请号：US09709569

申请日：2000-11-13

申请人： Norio Koizumi ,  Masahiko Tsuchiya

发明人： Norio Koizumi ,  Masahiko Tsuchiya

IPC分类号： H02M318

CPC分类号： G09G3/3696 ,  G09G2330/021 ,  G09G2330/027

摘要： A semiconductor device that is capable of preventing erroneous operation such as momentary lighting, comprising a booster circuit to which first and second power supply potentials VDD and VSS are supplied from an external power source, for boosting the absolute value of the potential difference therebetween and charging the boosted potential to a capacitor. This booster circuit has a plurality of transistors and a plurality of capacitors, and the boosted potential is charged to one of the plurality of capacitors in accordance with how the plurality of transistors are turned on or off. The gates of a plurality of transistors are connected to output lines of first and second NAND circuits, to which the output of a comparator is input through a buffer. The output of the comparator is at a low level when the second power supply potential VSS is higher than a reference potential VREG, such as when the power is forcibly cut, in which case the charge in one of the plurality of capacitors is discharged, based on the outputs from the first and second NAND circuits.

摘要翻译： 一种半导体装置，其能够防止诸如瞬时点亮的错误操作，包括从外部电源向其提供第一和第二电源电位VDD和VSS的升压电路，用于升压其间的电位差的绝对值并充电 电容器的电位升高。 该升压电路具有多个晶体管和多个电容器，并且根据多个晶体管的导通或截止的方式将升压电位充电到多个电容器中的一个。 多个晶体管的栅极连接到第一和第二NAND电路的输出线，比较器的输出通过缓冲器输入到其中。 当第二电源电位VSS高于基准电位VREG时，比较器的输出处于低电平，例如当电源被强制切断时，在这种情况下，多个电容器之一中的电荷基于放电 在第一和第二NAND电路的输出上。

公开(公告)号：US06317343B1

公开(公告)日：2001-11-13

申请号：US09516570

申请日：2000-03-01

申请人： Michio Okamura ,  Masaaki Yamagishi ,  Akinori Mogami

发明人： Michio Okamura ,  Masaaki Yamagishi ,  Akinori Mogami

IPC分类号： H02M318

CPC分类号： H02M3/07

摘要： There is disclosed a power supply system comprising capacitors that are connected switchably via a small number of switches to decrease variations of an output voltage. The switches comprise a series connection switch and first and second sets of switches. A control means controls the first set of switches, the second set of switches, and the series connection switch to switch connection of the capacitors of the first and second sets among a first state in which the first set of capacitors is connected in series with the second set of capacitors, a second state in which the first set of capacitors is connected in parallel with the second set of capacitors, and a third state in which one or more capacitors of the first set are connected in parallel with one or more capacitors of the second set.

摘要翻译： 公开了一种电源系统，其包括经由少量开关可切换地连接的电容器，以减小输出电压的变化。 开关包括串联连接开关和第一组和第二组开关。 控制装置控制第一组开关，第二组开关和串联连接开关，以在第一组电容器与第一组电容器串联连接的第一状态之间切换第一组和第二组的电容器的连接 第二组电容器，其中第一组电容器与第二组电容器并联连接的第二状态，以及第三状态，其中第一组的一个或多个电容器与一个或多个电容器并联连接， 第二集。

公开(公告)号：US06304469B1

公开(公告)日：2001-10-16

申请号：US09560746

申请日：2000-04-28

申请人： Tz-yi Liu

发明人： Tz-yi Liu

IPC分类号： H02M318

CPC分类号： H02M3/073

摘要： A charge pump circuit includes feedback level shifters for providing threshold voltage cancellation and feedforward level shifters for providing boosted clocking signals to generate a high pumped output voltage from a low supply voltage. The charge pump circuit includes plurality of switching circuits each including first and second signal terminals and a control terminal adapted to receive a control signal. Each switching circuit couples its first signal terminal to its second signal terminal responsive to the control signal. The signal terminals of the plurality of switching circuits are connected in series between an input voltage node and an output voltage node. A plurality of energy storage circuits each have a first terminal coupled to a respective voltage node formed by the interconnection between adjacent switching circuits and a second terminal adapted to receive a clocking signal. At least one feedback level shifting circuit is coupled between a selected one of the voltage nodes and the control terminal of a switching circuit between the selected voltage node the input node, each feedback level shifting circuit applying the voltage on the voltage node to the control terminal responsive to a clock signal. At least one feedforward level shifting circuit is coupled between a selected one of the voltage nodes and the second terminal of one of the energy storage circuits coupled to a voltage node between the selected voltage node and the output node. Each feedforward level shifting circuit applies the voltage on the voltage node to the second terminal responsive to a clock signal.

摘要翻译： 电荷泵电路包括用于提供阈值电压消除的反馈电平移位器和用于提供升压时钟信号以从低电源电压产生高泵浦输出电压的前馈电平移位器。 电荷泵电路包括各自包括第一和第二信号端的多个开关电路和适于接收控制信号的控制端。 响应于控制信号，每个开关电路将其第一信号端耦合到其第二信号端。 多个开关电路的信号端子串联连接在输入电压节点和输出电压节点之间。 多个能量存储电路各自具有耦合到由相邻开关电路之间的互连形成的相应电压节点的第一端子和适于接收定时信号的第二端子。 至少一个反馈电平移位电路耦合在所选择的一个电压节点和所选择的电压节点之间的开关电路的输入节点之间，每个反馈电平移位电路将电压节点上的电压施加到控制端 响应时钟信号。 至少一个前馈电平移位电路耦合在所选择的一个电压节点和耦合到所选择的电压节点和输出节点之间的电压节点的能量存储电路中的一个的第二终端。 每个前馈电平移位电路响应于时钟信号将电压节点上的电压施加到第二终端。

公开(公告)号：US06281705B1

公开(公告)日：2001-08-28

申请号：US09453141

申请日：1999-12-02

申请人： Ho-Yuan Yu

发明人： Ho-Yuan Yu

IPC分类号： H02M318

CPC分类号： H01L27/098 ,  H01L27/1203 ,  H02M3/00 ,  H02M3/07

摘要： This invention discloses the concept of the integration of the four terminal switcher and the capacitor pairs for the DC to DC converter or power supplier. This invention can be built by IC process as the DC to DC converter or power supply alone or used as power supply or converter module or block for distributed power in the System-on-Chip. This invention discloses the basic structure of the DC to DC converter or power supply module on standard CMOS IC process and on SOI substrates. This basic structure of the DC to DC converter or power supply module provides high current and low voltage applications for future generations of ICs.

摘要翻译： 本发明公开了用于DC到DC转换器或电源的四端开关和电容器对的集成的概念。 本发明可以通过IC工艺作为DC-DC转换器或电源单独构建，或者用作片上系统中的用于分布式电力的电源或转换器模块或块。 本发明公开了在标准CMOS IC工艺和SOI衬底上的DC-DC转换器或电源模块的基本结构。 DC到DC转换器或电源模块的这种基本结构为后代的IC提供了高电流和低电压应用。

公开(公告)号：US06208539B1

公开(公告)日：2001-03-27

申请号：US09437329

申请日：1999-11-09

申请人： Chung K. Chang

发明人： Chung K. Chang

IPC分类号： H02M318

CPC分类号： H02M3/073 ,  G11C16/30

摘要： A method and apparatus for providing a charge pump that is particularly useful for generating high voltages and high currents for erasing and programming flash electrically-erasable programmable read only memory arrays (Flash EEPROMs). The invention includes an efficient method and circuit for generating a pumped voltage with no voltage drop from one stage to the next by using a simple two-phase clocking scheme and an auxiliary pump to gate a larger primary pump. One feature allows adjustment of the level of voltage pumping to accommodate higher voltage power supplies.

摘要翻译： 一种用于提供电荷泵的方法和装置，其特别适用于产生用于擦除和编程闪存电可擦除可编程只读存储器阵列（闪存EEPROM）的高电压和高电流。 本发明包括一种有效的方法和电路，用于通过使用简单的两相时钟方案和辅助泵来产生较大的主泵来产生没有从一个级到另一级的电压降的泵浦电压。 一个特征允许调整电压水平以适应较高电压的电源。