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10 条记录 (耗时 0.014 秒)

    Adaptive digital pulse width modulation generator for buck converters
    2.
    发明授权
    Adaptive digital pulse width modulation generator for buck converters 有权
    用于降压转换器的自适应数字脉宽调制发生器

    公开(公告)号：US09071138B2

    公开(公告)日：2015-06-30

    申请号：US13862307

    申请日：2013-04-12

    申请人： Huy X. Ngo ,  Donald Wile

    发明人： Huy X. Ngo ,  Donald Wile

    IPC分类号： G05F1/59 ,  H02M3/157 ,  H02M3/158 ,  H02J1/10 ,  H02M1/10

    CPC分类号： H02M3/157 ,  H02J1/10 ,  H02M1/10 ,  H02M3/158

    摘要： Systems and methods are disclosed to control a buck converter by performing adaptive digital pulse width modulation (ADPWM) with a plurality of upper power transistors each uniquely controlled to enable greater than 100% duty cycle for the buck converter and a lower power transistor coupled to the plurality of upper power transistors; and driving an inductor having one end coupled to the lower power transistor and the upper power transistors.

    摘要翻译： 公开了系统和方法来通过执行具有多个上功率晶体管的自适应数字脉宽调制（ADPWM）来控制降压转换器，每个上功率晶体管被独特地控制，以使降压转换器能够实现大于100％的占空比，以及耦合到 多个上功率晶体管; 并驱动具有一端耦合到下功率晶体管和上功率晶体管的电感器。

    Adaptive non-positive inductor current detector (ANPICD)
    3.
    发明授权
    Adaptive non-positive inductor current detector (ANPICD) 有权
    自适应非正电感电流检测器（ANPICD）

    公开(公告)号：US08242813B1

    公开(公告)日：2012-08-14

    申请号：US12889185

    申请日：2010-09-23

    申请人： Donald Wile ,  Andrew Wu

    发明人： Donald Wile ,  Andrew Wu

    IPC分类号： H03K3/00

    CPC分类号： G05F1/40 ,  G01R19/0092 ,  G01R19/25 ,  G01R31/40 ,  H02M3/1588 ,  H02M2001/0009 ,  H03K17/133 ,  H03K2217/0036 ,  Y02B70/1466

    摘要： Systems and methods are disclosed to detect current for an output load with an inductor. The system includes a high side power transistor a low side power transistor coupled to the high side power transistor; and a controller coupled to the high and low side power transistors to provide cycle by cycle conduction of the low side power transistor, said controller adaptively turning off the low side power transistor when the high and low side power transistors are off and an inductor current is non-positive. Adaptation of the turn off of the low side transistor is based on the time position of the detection of the non-positive inductor current and serves to improve the power efficiency of the system.

    摘要翻译： 公开了系统和方法来检测具有电感器的输出负载的电流。 该系统包括耦合到高侧功率晶体管的低边功率晶体管的高边功率晶体管; 以及控制器，其耦合到所述高侧和低侧功率晶体管以提供所述低侧功率晶体管的逐周期导通，所述控制器在所述高侧和低侧功率晶体管截止时自适应地关断所述低侧功率晶体管，并且电感器电流为 非正面。 低侧晶体管关断的适应是基于检测非正电感电流的时间位置，用于提高系统的功率效率。

    Non-positive inductor current detector for step down switching regulators
    6.
    发明授权
    Non-positive inductor current detector for step down switching regulators 有权
    用于降压开关稳压器的非正电感电流检测器

    公开(公告)号：US08421425B1

    公开(公告)日：2013-04-16

    申请号：US12889166

    申请日：2010-09-23

    申请人： Andrew Wu ,  Donald Wile

    发明人： Andrew Wu ,  Donald Wile

    IPC分类号： G05F1/618

    CPC分类号： G05F1/40 ,  G01R19/0092 ,  G01R19/25 ,  G01R31/40 ,  H02M3/1588 ,  H02M2001/0009 ,  H03K17/133 ,  H03K2217/0036 ,  Y02B70/1466

    摘要： A current detector for an output load includes a high side power transistor; a low side power transistor coupled to the high side power transistor; and a controller coupled to the high and low side power transistors to provide cycle by cycle control of the conduction of the high and low side power transistors, wherein if the controller detects zero or negative current in the output inductor, using a dead time between when the low side power transistor turns off and before the high side power transistor turns on, the low side power transistor is held off during the entirety of the next switching cycle.

    摘要翻译： 用于输出负载的电流检测器包括：高侧功率晶体管; 耦合到高侧功率晶体管的低边功率晶体管; 以及控制器，其耦合到所述高侧和低侧功率晶体管，以提供高低侧功率晶体管的导通的逐周期控制，其中如果所述控制器检测到所述输出电感器中的零电流或负电流，则使用在时间 低侧功率晶体管截止，在高侧功率晶体管导通之前，低功率晶体管在整个下一个开关周期期间被截止。

    Fast transient buck regulator with dynamic charge/discharge capability
    7.
    发明授权
    Fast transient buck regulator with dynamic charge/discharge capability 有权
    具有动态充放电能力的快速瞬态降压调节器

    公开(公告)号：US09209691B2

    公开(公告)日：2015-12-08

    申请号：US13892134

    申请日：2013-05-10

    申请人： Huy X. Ngo ,  Donald Wile

    发明人： Huy X. Ngo ,  Donald Wile

    IPC分类号： H02M3/158 ,  H02M3/156

    CPC分类号： H02M3/158 ,  H02M2003/1566

    摘要： Systems and methods are disclosed to control a buck converter with a first switching circuit including a first upper power transistor coupled to a first lower power transistor at a first junction; a second upper power transistor coupled to a second lower power transistor at a second junction; an inductor coupled to the first and second junctions; and a load coupled to the second junction.

    摘要翻译： 公开了系统和方法来控制具有第一开关电路的降压转换器，所述第一开关电路包括在第一接合处耦合到第一低功率晶体管的第一上功率晶体管; 第二上功率晶体管，其在第二连接处耦合到第二低功率晶体管; 耦合到所述第一和第二结的电感器; 以及耦合到第二结的负载。

    Systems and methods for switching supply load current estimation
    9.
    发明授权
    Systems and methods for switching supply load current estimation 有权
    用于开关电源负载电流估计的系统和方法

    公开(公告)号：US08710814B1

    公开(公告)日：2014-04-29

    申请号：US12889141

    申请日：2010-09-23

    申请人： Donald Wile

    发明人： Donald Wile

    IPC分类号： G05F1/00

    CPC分类号： G05F1/40 ,  G01R19/0092 ,  G01R19/25 ,  G01R31/40 ,  H02M3/1588 ,  H02M2001/0009 ,  H03K17/133 ,  H03K2217/0036 ,  Y02B70/1466

    摘要： Systems and methods are disclosed to detect a load current in a power regulator by providing power output through power transistors each having a plurality of dead time periods during break-before-make (BBM) of the power transistors; and measuring the load current of the output power circuit during the dead time period.

    摘要翻译： 公开了系统和方法，以通过在功率晶体管的制造前（BBM）期间具有多个死区时间周期的功率晶体管提供功率输出来检测功率调节器中的负载电流; 并在死区时间内测量输出电源电路的负载电流。

    Method and apparatus for managing and uniformly maintaining pixel circuitry in a flat panel display
    10.
    发明申请
    Method and apparatus for managing and uniformly maintaining pixel circuitry in a flat panel display 审中-公开
    用于管理和均匀地维护平板显示器中的像素电路的方法和装置

    公开(公告)号：US20080048951A1

    公开(公告)日：2008-02-28

    申请号：US11710462

    申请日：2007-02-22

    申请人： Walter Naugler ,  Donald Wile ,  Kapil Sakariya

    发明人： Walter Naugler ,  Donald Wile ,  Kapil Sakariya

    IPC分类号： G09G3/32

    CPC分类号： G09G3/3233 ,  G09G3/006 ,  G09G3/3291 ,  G09G2320/0242 ,  G09G2320/0276 ,  G09G2320/0295 ,  G09G2320/045 ,  G09G2320/048 ,  G09G2330/12

    摘要： The present invention describes a method and apparatus for measuring the voltage and current characteristics of the OLED pixel as it ages and correlating the measured data to the decrease in quantum efficiency and changes in OLED impedance over the life of the OLED, so that corrections can be made to the image drive system to prevent image sticking and color point drift. The method and apparatus of the present invention do not require any additional circuitry or changes in the display design. The circuitry of the present invention is implemented in the display driver integrated circuit (IC) chips. The basis of the invention is the luminance-current-voltage (LIV) curves which characterize the OLED materials over their life time. A series of these curves are stored in memory representing a OLED material at various ages. The apparatus of the present invention is used to measure driver voltages and currents for a pixel having an OLED, which measurements are then used to extract the voltage current curve for the OLED at any point in time. The extracted curve is compared to the aging curves stored in memory to determine the aging curve that best describes the measured present voltage current characteristic of the pixel. That aging curve is used to drive the pixel.

    摘要翻译： 本发明描述了一种用于测量OLED像素的电压和电流特性的方法和装置，当OLED像素老化并使测量数据与OLED的寿命期间量子效率的降低和OLED阻抗的变化相关联时，校正可以是 制作图像驱动系统，防止图像粘贴和色点漂移。 本发明的方法和装置不需要任何额外的电路或显示设计的改变。 本发明的电路在显示驱动器集成电路（IC）芯片中实现。 本发明的基础是在其寿命中表征OLED材料的亮度 - 电流 - 电压（LIV）曲线。 这些曲线的一系列存储在代表各种年龄的OLED材料的存储器中。 本发明的装置用于测量具有OLED的像素的驱动电压和电流，然后使用这些测量值在任何时间点提取OLED的电压电流曲线。 将提取的曲线与存储在存储器中的老化曲线进行比较，以确定最佳描述所测量的当前电压电流特性的老化曲线。 该老化曲线用于驱动像素。