公开(公告)号：US06633494B2

公开(公告)日：2003-10-14

申请号：US10004319

申请日：2001-10-25

申请人： Bob Roohparvar ,  Kevin Z. Mahouti ,  Karl Rapp

发明人： Bob Roohparvar ,  Kevin Z. Mahouti ,  Karl Rapp

IPC分类号： H02M318

CPC分类号： H02M3/073 ,  H02M2003/076

摘要： A charge pump system, including a charge pump and associated distributed clock generation circuitry, is provided for generating high voltages from a low initial voltage in applications such as erasing and programming electrically erasable programmable read only memory (EEPROM) arrays. The charge pump system uses a power supply voltage and a clock and includes a first phase bootstrapping circuit, an inverter, and a second phase bootstrapping circuit, and a two-stage charge pump. The two phase bootstrapping circuits are both responsive to the clock and use a distributed bootstrapping scheme to provide first and second phase clock signals with fixed multiples of the power supply voltage in order to overcome increased effective transistor threshold voltages, increase efficiency, and allow for charge boosting in a limited number of stages. The inverter is connected to the second phase bootstrapping circuit, causing the second phase clock signal to be opposite in phase from the first clock signal. The two-stage charge pump is responsive to the power supply voltage and the first and second phase clocks and uses native transistors that have lower threshold voltages. A high voltage is produced from the two-stage charge pump by alternately adding charge to the power supply voltage in each cycle of the first and second phase clock signals.

摘要翻译： 提供了一种电荷泵系统，包括电荷泵和相关的分布式时钟生成电路，用于在诸如擦除和编程电可擦除可编程只读存储器（EEPROM）阵列的应用中从低的初始电压产生高电压。 电荷泵系统使用电源电压和时钟，并且包括第一相自举电路，逆变器和第二相自举电路以及两级电荷泵。 两相自举电路都响应于时钟并且使用分布式自举方案来提供具有固定倍数的电源电压的第一和第二相位时钟信号，以便克服增加的有效晶体管阈值电压，提高效率并允许充电 在有限的阶段提升。 逆变器连接到第二相自举电路，使得第二相位时钟信号与第一时钟信号相位相反。 两级电荷泵响应电源电压和第一和第二相位时钟，并使用具有较低阈值电压的天然晶体管。 通过在第一和第二相位时钟信号的每个周期中交替地向电源电压添加电荷，从两级电荷泵产生高电压。

公开(公告)号：US06522559B2

公开(公告)日：2003-02-18

申请号：US10003898

申请日：2001-10-25

申请人： Bob Roohparvar ,  K. Z. Mahouti ,  Karl Rapp

发明人： Bob Roohparvar ,  K. Z. Mahouti ,  Karl Rapp

IPC分类号： H02M318

CPC分类号： H02M3/073 ,  H02M2003/076

摘要： A charge pump system and associated variable-amplitude clock generation circuitry are provided for generating high voltages from a low initial voltage in applications such as erasing and programming electrically erasable programmable read only memory (EEPROM) arrays. The charge pump system uses a power supply voltage and a clock and includes a first phase bootstrapping circuit, an inverter, and a second phase bootstrapping circuit, and charge pump circuitry. The two phase bootstrapping circuits are both responsive to the clock and provide first and second phase clock signals. The inverter is connected to the second phase bootstrapping circuit, causing the second phase clock signal to be opposite in phase from the first clock signal. The charge pump circuitry is responsive to the power supply voltage and the first and second phase clocks and uses native transistors that have lower threshold voltages. A high voltage is produced from the charge pump circuitry by alternately adding charge to the power supply voltage in each cycle of the first and second phase clock signals. The first and second phase clock signals increase in voltage as the voltage level in the charge pump increases in order to overcome increased effective transistor threshold voltages.

摘要翻译： 提供电荷泵系统和相关联的可变幅度时钟产生电路，用于在诸如擦除和编程电可擦除可编程只读存储器（EEPROM）阵列的应用中从低的初始电压产生高电压。 电荷泵系统使用电源电压和时钟，并且包括第一相自举电路，逆变器和第二相自举电路以及电荷泵电路。 两相自举电路都响应时钟并提供第一和第二相位时钟信号。 逆变器连接到第二相自举电路，使得第二相位时钟信号与第一时钟信号相位相反。 电荷泵电路响应于电源电压和第一和第二相位时钟，并且使用具有较低阈值电压的天然晶体管。 通过在第一和第二相位时钟信号的每个周期中交替地向电源电压中加入电荷，从电荷泵电路产生高电压。 随着电荷泵中的电压电平增加，第一和第二相位时钟信号的电压增加，以克服增加的有效晶体管阈值电压。

公开(公告)号：US06385065B1

公开(公告)日：2002-05-07

申请号：US09662207

申请日：2000-09-14

申请人： Bob Roohparvar ,  K. Z. Mahouti ,  Karl Rapp

发明人： Bob Roohparvar ,  K. Z. Mahouti ,  Karl Rapp

IPC分类号： H02M318

CPC分类号： H02M3/073 ,  H02M2003/076

摘要： A charge pump system, including a charge pump and associated distributed clock generation circuitry, is provided for generating high voltages from a low initial voltage in applications such as erasing and programming electrically erasable programmable read only memory (EEPROM) arrays. The charge pump system uses a power supply voltage and a clock and includes a first phase bootstrapping circuit, an inverter, and a second phase bootstrapping circuit, and a two-stage charge pump. The two phase bootstrapping circuits are both responsive to the clock and use a distributed bootstrapping scheme to provide first and second phase clock signals with fixed multiples of the power supply voltage in order to overcome increased effective transistor threshold voltages, increase efficiency, and allow for charge boosting in a limited number of stages. The inverter is connected to the second phase bootstrapping circuit, causing the second phase clock signal to be opposite in phase from the first clock signal. The two-stage charge pump is responsive to the power supply voltage and the first and second phase clocks and uses native transistors that have lower threshold voltages. A high voltage is produced from the two-stage charge pump by alternately adding charge to the power supply voltage in each cycle of the first and second phase clock signals.

公开(公告)号：US06356469B1

公开(公告)日：2002-03-12

申请号：US09661485

申请日：2000-09-14

申请人： Bob Roohparvar ,  K. Z. Mahouti ,  Karl Rapp

发明人： Bob Roohparvar ,  K. Z. Mahouti ,  Karl Rapp

IPC分类号： H02M318

CPC分类号： H02M3/073 ,  H02M2003/076

摘要： A charge pump system and associated variable-amplitude clock generation circuitry are provided for generating high voltages from a low initial voltage in applications such as erasing and programming electrically erasable programmable read only memory (EEPROM) arrays. The charge pump system uses a power supply voltage and a clock and includes a first phase bootstrapping circuit, an inverter, and a second phase bootstrapping circuit, and charge pump circuitry. The two phase bootstrapping circuits are both responsive to the clock and provide first and second phase clock signals. The inverter is connected to the second phase bootstrapping circuit, causing the second phase clock signal to be opposite in phase from the first clock signal. The charge pump circuitry is responsive to the power supply voltage and the first and second phase clocks and uses native transistors that have lower threshold voltages. A high voltage is produced from the charge pump circuitry by alternately adding charge to the power supply voltage in each cycle of the first and second phase clock signals. The first and second phase clock signals increase in voltage as the voltage level in the charge pump increases in order to overcome increased effective transistor threshold voltages.

摘要翻译： 提供电荷泵系统和相关联的可变幅度时钟产生电路，用于在诸如擦除和编程电可擦除可编程只读存储器（EEPROM）阵列的应用中从低的初始电压产生高电压。 电荷泵系统使用电源电压和时钟，并且包括第一相自举电路，逆变器和第二相自举电路以及电荷泵电路。 两相自举电路都响应时钟并提供第一和第二相位时钟信号。 逆变器连接到第二相自举电路，使得第二相位时钟信号与第一时钟信号相位相反。 电荷泵电路响应于电源电压和第一和第二相位时钟，并且使用具有较低阈值电压的天然晶体管。 通过在第一和第二相位时钟信号的每个周期中交替地向电源电压中加入电荷，从电荷泵电路产生高电压。 随着电荷泵中的电压电平增加，第一和第二相位时钟信号的电压增加，以克服增加的有效晶体管阈值电压。

公开(公告)号：US07978489B1

公开(公告)日：2011-07-12

申请号：US12221567

申请日：2008-08-04

申请人： Mark Telefus ,  Bahman Sharifipour ,  Rowell Gapuz ,  Richard Sy ,  HongWei Du ,  Bob Roohparvar

发明人： Mark Telefus ,  Bahman Sharifipour ,  Rowell Gapuz ,  Richard Sy ,  HongWei Du ,  Bob Roohparvar

IPC分类号： H02M1/00

CPC分类号： H01R31/065 ,  H01R13/24 ,  H01R13/6633

摘要： A power supply adapter is provided. The power supply adapter includes a power converter circuit configured to generate a regulated voltage signal. The power converter circuit includes a rectifier coupled with AC power blades. A regulator circuit is coupled with the rectifier. A transformer is coupled with the regulator circuit. The transformer includes a primary and a secondary. The transformer is coupled with the regulator circuit via the primary. An output circuit is coupled with the secondary of the transformer. The output circuit includes an output capacitor. A flexible contact is coupled with each of a first and a second printed circuit board and flexibly biased to couple with a proximate end of the AC power blades. The adapter includes an EMI shield substantially surrounding a connector receptacle. The power converter circuit can include a forward or a flyback power converter. The transformer can include a planar format transformer coupled with the first or the second PCB. The transformer can include a metallic core of a ferrite material. The transformer core can be coupled with the EMI shield to provide thermal spreading. The adapter can include an enclosure for housing the power converter circuit. The enclosure includes a thermally conductive potting material substantially filling an empty space of an interior of the enclosure.

摘要翻译： 提供电源适配器。 电源适配器包括被配置为产生调节电压信号的功率转换器电路。 电力转换器电路包括与AC电源叶片耦合的整流器。 调节器电路与整流器耦合。 变压器与调节器电路耦合。 变压器包括主和次级。 变压器通过主电路与调节器电路耦合。 输出电路与变压器的次级耦合。 输出电路包括输出电容器。 柔性触点与第一和第二印刷电路板中的每一个耦合，并且被柔性地偏置以与AC电源叶片的近端耦合。 适配器包括基本上围绕连接器插座的EMI屏蔽。 功率转换器电路可以包括正向或反激式功率转换器。 变压器可以包括与第一或第二PCB耦合的平面格式变压器。 变压器可以包括铁氧体材料的金属芯。 变压器铁芯可与EMI屏蔽耦合，以提供热扩散。 适配器可以包括用于容纳电力转换器电路的外壳。 外壳包括基本上填充外壳内部的空的空间的导热灌封材料。