Low power consumption linear voltage regulator having a fast response
with respect to the load transients
    1.
    发明授权
    Low power consumption linear voltage regulator having a fast response with respect to the load transients 失效
    低功耗线性稳压器相对于负载瞬变具有快速响应

    公开(公告)号:US6157176A

    公开(公告)日:2000-12-05

    申请号:US114564

    申请日:1998-07-13

    IPC分类号: G05F1/565 G05F1/40 G05F1/573

    CPC分类号: G05F1/565

    摘要: A linear type of voltage regulator, having at least one input terminal adapted to receive a supply voltage and one output terminal adapted to deliver a regulated output voltage, includes a power transistor and a driver circuit for the transistor. The driver circuit includes an operational amplifier having an input differential stage biased by a bias current which varies proportionally with the variations of the regulated output voltage at the output terminal of the regulator.

    摘要翻译: 具有适于接收电源电压的至少一个输入端子和适于传递稳定输出电压的一个输出端子的线性类型的电压调节器包括用于晶体管的功率晶体管和驱动器电路。 驱动器电路包括具有由偏置电流偏置的输入差分级的运算放大器,该偏置电流与调节器的输出端上的稳压输出电压的变化成比例地变化。

    Control circuit for the charging current of batteries at the end of the charging phase, especially for lithium batteries
    2.
    发明授权
    Control circuit for the charging current of batteries at the end of the charging phase, especially for lithium batteries 有权
    充电阶段结束时电池充电电流的控制电路,特别适用于锂电池

    公开(公告)号:US06433510B1

    公开(公告)日:2002-08-13

    申请号:US09697232

    申请日:2000-10-26

    IPC分类号: H02J700

    CPC分类号: H02J7/0072

    摘要: A control circuit for controlling current of batteries at the end of the charging phase, especially for lithium batteries, including an input/output circuit, placed between a battery charger and a battery, and an output stage, including two transistors, wherein the resistance of one of the two transistors is modulated to increase the value of the total resistance and to cause a lower turning off current of said output stage.

    摘要翻译: 一种控制电路,用于控制在充电阶段结束时的电池电流,特别是用于锂电池,包括放置在电池充电器和电池之间的输入/输出电路,以及包括两个晶体管的输出级,其中电阻 调制两个晶体管中的一个以增加总电阻的值并且导致所述输出级的较低截止电流。

    Integrated circuit generating a voltage linear ramp having a low raise
    3.
    发明授权
    Integrated circuit generating a voltage linear ramp having a low raise 有权
    产生具有低升高的电压线性斜坡的集成电路

    公开(公告)号:US06388505B1

    公开(公告)日:2002-05-14

    申请号:US09473899

    申请日:1999-12-28

    IPC分类号: G05F110

    CPC分类号: H03K17/163 H03K4/023

    摘要: An integrated circuit voltage ramp generator is presented. The circuit includes at least one operational amplifier having a non-inverting input terminal connected to a voltage reference, and having an output terminal coupled in a feedback relationship to an output terminal of the generator circuit. The ramp voltage generator further includes a first storage capacitance connected between the non-inverting input terminal of the operational amplifier and a ground reference, which is loaded by means of a second pumping capacitance connected in parallel to the first capacitance. The pumping and voltage generation is and controlled by a series of passgates coupled to clock signals.

    摘要翻译: 提出了一种集成电路电压斜坡发生器。 该电路包括至少一个运算放大器,其具有连接到电压基准的非反相输入端,并且具有以反馈关系耦合到发电机电路的输出端的输出端。 斜坡电压发生器还包括连接在运算放大器的非反相输入端和接地基准之间的第一存储电容,其通过与第一电容并联连接的第二泵浦电容来加载。 泵浦和电压产生由耦合到时钟信号的一系列通电闸门控制。

    Control circuit for the current switch edges of a power transistor
    4.
    发明授权
    Control circuit for the current switch edges of a power transistor 失效
    功率晶体管的电流开关边缘的控制电路

    公开(公告)号:US6133766A

    公开(公告)日:2000-10-17

    申请号:US087549

    申请日:1998-05-29

    摘要: A battery-charging electronic device comprises a current generator adapted to supply a charging current to a battery and a controlled current edge switch having a circuit for controlling the switching edges of current being flowed through a power transistor. The switching edge control circuit comprises a controlled edge variable voltage generator for generating a controlled edge voltage signal, a voltage/current converter for converting the voltage signal to a controlled edge current signal, and a driver circuit for the power transistor being input the controlled edge current signal to mirror, onto the power transistor, an output current which is proportional to the controlled edge current signal.

    摘要翻译: 电池充电电子器件包括适于向电池提供充电电流的电流发生器和具有用于控制流过功率晶体管的电流的开关边缘的电路的受控电流边缘开关。 开关边缘控制电路包括用于产生受控边沿电压信号的受控边缘可变电压发生器,用于将电压信号转换为受控边沿电流信号的电压/电流转换器,以及功率晶体管的驱动电路,输入受控边缘 电流信号反射到功率晶体管上,与受控边沿电流信号成比例的输出电流。

    Low consumption linear voltage regulator with high supply line rejection
    5.
    发明授权
    Low consumption linear voltage regulator with high supply line rejection 有权
    低消耗线性稳压器,具有高电源线路抑制能力

    公开(公告)号:US5939867A

    公开(公告)日:1999-08-17

    申请号:US141251

    申请日:1998-08-27

    IPC分类号: G05F1/565

    CPC分类号: G05F1/565

    摘要: A linear type of voltage regulator, having an input terminal adapted to receive a supply voltage thereon, and an output terminal adapted to deliver a regulated output voltage, includes a power transistor and a driving circuit therefor. The driving circuit includes an operational amplifier having a differential input stage biased by a bias current which varies proportionally with the output current of the regulator.

    摘要翻译: 具有适于接收电源电压的输入端子的线性类型的电压调节器和适于传递稳定的输出电压的输出端子包括功率晶体管及其驱动电路。 驱动电路包括具有由偏置电流偏置的差分输入级的运算放大器,该偏置电流与调节器的输出电流成比例地变化。

    Voltage multiplier and relative operating method

    公开(公告)号:US20060202734A1

    公开(公告)日:2006-09-14

    申请号:US11364859

    申请日:2006-02-27

    IPC分类号: G06G7/16

    CPC分类号: H02M3/073

    摘要: A voltage multiplier includes a control circuit that generates first and second signals in phase opposition and a charging section. The latter comprises a first capacitor having a first terminal coupled to the first signal and a second capacitor having a first terminal coupled with the second signal. The multiplier includes respective parasitic capacitances placed respectively between the capacitors and a reference voltage. The charging section is coupled with an input voltage and is suitable for producing an output voltage that is a multiple of the constant voltage. The multiplier comprises a switch that selectively connects the parasitic capacitances to carry out a charge transfer from one parasitic capacitance to the other.

    System for driving columns of a liquid crystal display
    7.
    发明申请
    System for driving columns of a liquid crystal display 有权
    用于驱动液晶显示器列的系统

    公开(公告)号:US20050219191A1

    公开(公告)日:2005-10-06

    申请号:US10518614

    申请日:2003-06-23

    IPC分类号: G02F1/133 G09G3/20 G09G3/36

    CPC分类号: G09G3/3685 G09G2330/021

    摘要: A system for driving columns of a liquid crystal display includes logic circuitry operating in a supply path between a first and a second supply voltage in which the first supply voltage is higher than the second supply voltage. The logic circuitry is capable of generating first logic signals and second logic signals whose value is equal to the first or second supply voltage. The system includes two level shifters coupled to the logic circuitry and operating in a supply path between a third supply voltage greater than the first supply voltage and the second supply voltage; the level shifters are capable of raising the value of the second logic signals. The system also includes a first and a second pair of transistors having different supply paths and having an output terminal in common; the first and the second pair of transistors are coupled to the level shifters to determine the drive signal of a column. The system includes turnoff circuitry operating in a supply path between the third and the second supply voltage and coupled to the two level shifters. The turnoff circuitry is capable of keeping one of the two pairs of transistors in a turnoff state in the period of time of a frame when the other of the two pairs of transistors is operative.

    摘要翻译: 用于驱动液晶显示器列的系统包括逻辑电路,其操作在第一电源电压高于第二电源电压的第一和第二电源电压之间的供电路径中。 逻辑电路能够产生其值等于第一或第二电源电压的第一逻辑信号和第二逻辑信号。 该系统包括耦合到逻辑电路并且在大于第一电源电压和第二电源电压的第三电源电压之间的供电路径中操作的两个电平转换器; 电平移位器能够提高第二逻辑信号的值。 该系统还包括第一和第二对晶体管,其具有不同的供电路径并且具有共同的输出端子; 第一和第二对晶体管耦合到电平移位器以确定列的驱动信号。 该系统包括在第三和第二电源电压之间的供电路径中工作并耦合到两个电平转换器的关闭电路。 当两对晶体管中的另一对可操作时,该截止电路能够将两对晶体管中的一个保持在帧的时间段内的截止状态。

    Method and apparatus for protecting an integrated circuit from current
overload
    8.
    发明授权
    Method and apparatus for protecting an integrated circuit from current overload 失效
    用于保护集成电路免受电流过载的方法和装置

    公开(公告)号:US5710690A

    公开(公告)日:1998-01-20

    申请号:US488885

    申请日:1995-06-09

    CPC分类号: H03K17/284 H03K17/0822

    摘要: A non-dissipative device for protecting an integrated circuit having multiple independent channels against overloading. The non-dissipative device includes an input terminal and an output terminal having an integrated switch connected therebetween which consists of an input portion, a logic gate with two inputs a control portion, and an output portion, all connected in series with one another. The device further includes a generating circuit for generating the on-times and off-times of the integrated switch, the generating circuit is connected between an output of the output portion and an input of the logic gate.

    摘要翻译: 一种用于保护具有多个独立通道的集成电路以防超载的非耗散装置。 非耗散装置包括输入端子和输出端子,其具有连接在其间的集成开关,其由输入部分,具有两个输入的控制部分的逻辑门和输出部分组成,所述输出部分彼此串联连接。 该装置还包括用于产生集成开关的导通和关断时间的发生电路,该发生电路连接在输出部分的输出端和逻辑门的输入端之间。

    Slew rate control and optimization of power consumption in a power stage
    9.
    发明授权
    Slew rate control and optimization of power consumption in a power stage 失效
    功率级的转换速率控制和功耗优化

    公开(公告)号:US5656969A

    公开(公告)日:1997-08-12

    申请号:US449855

    申请日:1995-05-24

    摘要: Power consumption by the driving circuitry of an output stage, employing a slew-rate controlling operational amplifier, is reduced by modulating the level of the current output by the operational amplifier in function of the working conditions of the output stage. Switching delay may also be effectively reduced. An auxiliary current generator forces an additional current through the conducting one of the pair of input transistors of the operational amplifier only during initial and final phases of a transition, essentially when the slew rate control loop ceases to be effective. The boosting of the bias current through the conducting input transistor is determined by the degree of unbalance of the differential input stage of the operational amplifier, without the use of dissipative sensing elements.

    摘要翻译: 利用输出级的工作条件,通过调制运算放大器的电流输出电平,降低采用摆率控制运算放大器的输出级的驱动电路的功耗。 切换延迟也可以有效降低。 辅助电流发生器仅在转换的初始和最后阶段迫使额外的电流通过运算放大器的一对输入晶体管中的导通一个电流,基本上当压摆率控制回路不再有效时。 通过导通输入晶体管的偏置电流的升压由运算放大器的差分输入级的不平衡度决定,而不使用耗散感测元件。

    Analog MPPT circuit for photovoltaic power plant
    10.
    发明授权
    Analog MPPT circuit for photovoltaic power plant 有权
    光伏电站模拟MPPT电路

    公开(公告)号:US08339112B2

    公开(公告)日:2012-12-25

    申请号:US12828736

    申请日:2010-07-01

    IPC分类号: G05F1/00

    摘要: A method of power point tracking for operating a photovoltaic power plant, which includes a DC-DC converter of the output voltage of a panel having a power switch driven by a PWM control signal of variable duty-cycle generated by a PWM control circuit, in discontinuous conduction mode or continuous conduction mode depending on the current load of the converter, is implemented by low cost analog circuits. The method does not require the use of any analog-to-digital conversion, digital processing or storage resources and may use a single voltage sensor.

    摘要翻译: 一种用于操作光伏电站的功率点跟踪的方法,其包括具有由PWM控制电路产生的可变占空比的PWM控制信号驱动的功率开关的面板的输出电压的DC-DC转换器, 不连续导通模式或连续导通模式取决于转换器的电流负载,由低成本模拟电路实现。 该方法不需要使用任何模数转换,数字处理或存储资源,并且可以使用单个电压传感器。