Boost DC/DC converter
    1.
    发明授权
    Boost DC/DC converter 有权
    升压DC / DC转换器

    公开(公告)号:US07173403B1

    公开(公告)日:2007-02-06

    申请号:US11308681

    申请日:2006-04-21

    IPC分类号: G05F1/40

    CPC分类号: H02M3/157

    摘要: A boost DC/DC converter, including a mask circuit, a switched boost circuit, a pulse width modulation (PWM) circuit and an AND gate, is provided. The mask circuit is used to output a mask signal according to a load current. In the present invention, the system can selectively operate in the pulse width modulation mode, the pulse frequency modulation (PFM) mode or the mixed pulse mask mode according to the mask signal corresponding to the load current when the system is under light load, medium load or heavy load respectively, so as to achieve optimal system efficiency.

    摘要翻译: 提供包括掩模电路,开关升压电路,脉宽调制(PWM)电路和与门的升压型DC / DC转换器。 掩模电路用于根据负载电流输出屏蔽信号。 在本发明中,系统可以根据当系统处于轻负载时的负载电流对应的掩模信号,以脉冲宽度调制模式,脉冲频率调制(PFM)模式或混合脉冲掩模模式选择性地工作,介质 负载或重负载,以达到最佳的系统效率。

    Digital-to-analog data converter and method for conversion thereof
    2.
    发明授权
    Digital-to-analog data converter and method for conversion thereof 有权
    数模转换数据转换器及其转换方法

    公开(公告)号:US07262727B1

    公开(公告)日:2007-08-28

    申请号:US11309036

    申请日:2006-06-12

    IPC分类号: H03M1/66

    CPC分类号: H03M1/682

    摘要: A digital-to-analog data converter for converting a digital input signal to an analog output signal is provided. The digital-to-analog data converter includes a register, a decoder, a converting unit and an output unit. During a first period, the decoder decodes least significant bits, and takes the decoded least significant bits as a first control signal for controlling the converting unit to output a first converting current according to the first control signal. During a second period, the decoder decodes most significant bits, and takes the decoded most significant bits as a second control signal for controlling the converting unit to output a second converting current according to the second control signal. The output unit registers the first converting current during the first period, amplifying the second converting current, and combining the amplified second converting current with the registered first converting current as the analog output signal during the second period.

    摘要翻译: 提供了一种用于将数字输入信号转换为模拟输出信号的数模转换数据转换器。 数模转换器包括寄存器,解码器,转换单元和输出单元。 在第一时段期间,解码器解码最低有效位,并将经解码的最低有效位作为第一控制信号,以控制转换单元根据第一控制信号输出第一转换电流。 在第二时段期间,解码器解码最高有效位,并将经解码的最高有效位作为第二控制信号,用于根据第二控制信号控制转换单元输出第二转换电流。 输出单元在第一周期期间注册第一转换电流,放大第二转换电流,并将放大的第二转换电流与注册的第一转换电流组合,作为第二周期期间的模拟输出信号。

    Adaptive feedback control method of FSC display
    3.
    发明授权
    Adaptive feedback control method of FSC display 有权
    FSC显示的自适应反馈控制方法

    公开(公告)号:US08368627B2

    公开(公告)日:2013-02-05

    申请号:US12391804

    申请日:2009-02-24

    IPC分类号: G09G3/36

    摘要: An adaptive feedback control method of a field sequential color display includes: a rearrangement step of converting gray-scale values of a three primary color field of an input image into gray-scale values of a new three primary color field and a dominated color field; a sampling step of performing a pixel sampling on a resolution of the input image in a sampling interval; a feedback control step of performing a pixel by pixel sum operation for each separated color on a color break-up value and a color value of the input image in a Lu′v′ color space to obtain a color difference sum, and performing a feedback control at a bit precision on the color difference sum; and a liquid crystal/backlight synchronization step of synchronizing a liquid crystal signal and a backlight grayscale value of the input image according to the minimum color difference sum.

    摘要翻译: 场顺序彩色显示器的自适应反馈控制方法包括:将输入图像的三原色灰度值转换为新的三原色场和主导色域的灰度值的重排步骤; 对采样间隔内的输入图像的分辨率进行像素采样的采样步骤; 反馈控制步骤,对于Lu'v'颜色空间中的颜色分解值和输入图像的颜色值,对于每个分离的颜色执行逐像素求和以获得色差和,并且执行反馈 控制在一定精度上的色差和; 以及液晶/背光同步步骤,用于根据最小色差和来同步输入图像的液晶信号和背光灰度值。

    Power conversion system and power control method for reducing cross regulation effect
    4.
    发明授权
    Power conversion system and power control method for reducing cross regulation effect 有权
    电力转换系统和功率控制方法,减少交叉调节效应

    公开(公告)号:US08258767B2

    公开(公告)日:2012-09-04

    申请号:US12772112

    申请日:2010-04-30

    IPC分类号: G05F1/656 G05F1/652

    摘要: A power conversion system and power control method for reducing cross regulation effect uses a voltage feedback adjustment circuit to modulate an error signal fed back from an output voltage so as to predict the energy of an output corresponding to its load states. While the energy delivered to an output terminal with its load remaining the same does not change, the energy delivered to an output terminal with its load changing is adjusted accordingly. The power conversion system thus effectively reduces the cross regulation effect and obtains excellent steady system output and transient response.

    摘要翻译: 用于降低交叉调节效应的功率转换系统和功率控制方法使用电压反馈调整电路来调制从输出电压反馈的误差信号,以便预测与其负载状态对应的输出的能量。 尽管输送端与其负载保持相同的能量并没有改变,但是相应地调整输出到其输出端的负载变化的能量。 因此,电力转换系统有效降低了交叉调节效应,获得了良好的稳定系统输出和瞬态响应。

    SIDO POWER CONVERTER AND DRIVING METHOD THEREOF
    5.
    发明申请
    SIDO POWER CONVERTER AND DRIVING METHOD THEREOF 有权
    SIDO电源转换器及其驱动方法

    公开(公告)号:US20120169307A1

    公开(公告)日:2012-07-05

    申请号:US13304464

    申请日:2011-11-25

    IPC分类号: G05F1/10

    CPC分类号: H02M3/158 H02M2001/009

    摘要: The present invention relates to a Single Inductor Double Output (SIDO) power converter, which comprises a power-stage circuit, a current detector, a slope compensation device, at least two error amplifiers, a comparing unit, a mode exchange circuit, a logical device and a driver. The SIDO current converter achieves an optimal SIDO power converting efficiency by controlling a full-current mode. Furthermore, different power transferring modes, under a variety of loadings, are used to address the issue of cross regulation and at meanwhile solving output voltage ripples and transient response to ensure the SIDO power converter a more flexible usage environment and better output performance.

    摘要翻译: 本发明涉及单电感双输出(SIDO)功率转换器,其包括功率级电路,电流检测器,斜率补偿装置,至少两个误差放大器,比较单元,模式交换电路,逻辑 设备和驱动程序。 SIDO电流转换器通过控制全电流模式实现了最佳的SIDO功率转换效率。 此外,在各种负载下,不同的功率传输模式被用于解决交叉调节的问题,同时解决输出电压纹波和瞬态响应,以确保SIDO功率转换器具有更灵活的使用环境和更好的输出性能。

    Current-balance circuit and backlight module having the same
    6.
    发明授权
    Current-balance circuit and backlight module having the same 有权
    电流平衡电路和背光模块具有相同的功能

    公开(公告)号:US08148911B2

    公开(公告)日:2012-04-03

    申请号:US12432054

    申请日:2009-04-29

    IPC分类号: H05B41/16

    CPC分类号: H05B33/0827

    摘要: The present invention relates to a current-balance circuit and a backlight module having the same. The current balance circuit includes a current balance unit, a control unit, and a detection unit. The current balance unit is connected to a plurality of light units to regulate the current of the plurality of light units, independent from the effects of input voltage. The detection unit is connected to the plurality of light units and the current balance unit to detect the minimum operating voltage for the plurality of light units. The control unit, connected to the current balance unit, controls the operation of the plurality of light units.

    摘要翻译: 本发明涉及一种电流平衡电路和具有该电流平衡电路的背光模块。 电流平衡电路包括电流平衡单元,控制单元和检测单元。 电流平衡单元连接到多个光单元,以独立于输入电压的影响来调节多个光单元的电流。 检测单元连接到多个光单元和电流平衡单元,以检测多个光单元的最小工作电压。 连接到当前平衡单元的控制单元控制多个光单元的操作。

    Control circuit and method for multi-mode buck-boost switching regulator
    7.
    发明授权
    Control circuit and method for multi-mode buck-boost switching regulator 失效
    多模降压 - 升压开关调节器的控制电路和方法

    公开(公告)号:US07701179B2

    公开(公告)日:2010-04-20

    申请号:US11760974

    申请日:2007-06-11

    IPC分类号: G05F1/24 G05F1/575

    摘要: A control circuit of a multi-mode buck-boost switching regulator and a method thereof are provided. The control circuit imposes ON/OFF timing sequences on switches according to the relationship between two controlling triangle waves and the load fluctuation. In each working cycle of each mode of the regulator, at most two switches perform switching operations. The control circuit is simple to design, which only includes simple digital elements, such as comparators, logic gates etc., instead of complicated analog circuits.

    摘要翻译: 提供了多模降压 - 升压开关调节器的控制电路及其方法。 控制电路根据两个控制三角波之间的关系和负载波动对开关施加ON / OFF定时序列。 在调节器的每个模式的每个工作循环中,最多两个开关执行开关操作。 控制电路设计简单,只包括简单的数字元件,比如比较器,逻辑门等,而不是复杂的模拟电路。

    DELAY LINE, ANALOG-TO-DIGITAL CONVERTING DEVICE AND LOAD-SENSING CIRCUIT USING THE SAME
    8.
    发明申请
    DELAY LINE, ANALOG-TO-DIGITAL CONVERTING DEVICE AND LOAD-SENSING CIRCUIT USING THE SAME 有权
    延迟线,模拟数字转换器件和使用它的负载感应电路

    公开(公告)号:US20070247346A1

    公开(公告)日:2007-10-25

    申请号:US11457973

    申请日:2006-07-17

    IPC分类号: H03M1/12

    摘要: A delay line, an analog-to-digital converting device and a load-sensing circuit using the same are provided. The delay line comprises a delay-control terminal, a reset terminal, n delay cells DCELLx (0

    摘要翻译: 提供延迟线,模数转换装置和使用其的负载感测电路。 延迟线包括延迟控制终端,复位终端,n个延迟单元DCELL (0 彼此串联连接。 每个延迟单元DCELL&lt; x&gt;被连接到延迟控制端子和复位端子,用于根据由延迟控制端子决定的延迟时间在延迟单元之间逐级发送第一级 在感测期间。 当感测周期结束时,所有延迟单元的输出被复位到第二级。 感测周期由复位端子的信号决定。 其中延迟单元DCELL <1>中的延迟单元DCELL 的至少一个输出端子(0 用作延迟线的输出端子。

    Control circuit for switching loss reduction and smooth mode transition of a high efficiency buck-boost power converter
    9.
    发明授权
    Control circuit for switching loss reduction and smooth mode transition of a high efficiency buck-boost power converter 有权
    用于高效率降压 - 升压功率转换器的开关损耗降低和平滑模式转换的控制电路

    公开(公告)号:US08692533B2

    公开(公告)日:2014-04-08

    申请号:US13591418

    申请日:2012-08-22

    IPC分类号: G05F1/00

    CPC分类号: H02M3/1582

    摘要: A buck-boost power converter switches the switches thereof with a novel sequence and extends the switching periods of the switches to reduce the switching loss and conduction loss when the input voltage thereof approaches the output voltage thereof. The influence of the load current of the power converter on the duty thereof is taken into account to switch the power converter between modes at correct time points, so as to prevent the output voltage from being affected by the mode switching.

    摘要翻译: 降压 - 升压功率转换器以新颖的顺序切换其开关,并延长开关的开关周期,以在其输入电压接近其输出电压时降低开关损耗和导通损耗。 考虑到功率转换器的负载电流对其占空比的影响,以在正确的时间点在模式之间切换功率转换器,以防止输出电压受模式切换的影响。

    Power Conversion System and Power Control Method for Reducing Cross Regulation Effect
    10.
    发明申请
    Power Conversion System and Power Control Method for Reducing Cross Regulation Effect 有权
    电力转换系统和减少交叉调节效应的功率控制方法

    公开(公告)号:US20120299567A1

    公开(公告)日:2012-11-29

    申请号:US13568607

    申请日:2012-08-07

    IPC分类号: G05F1/10

    摘要: A power conversion system and power control method for reducing cross regulation effect uses a voltage feedback adjustment circuit to modulate an error signal fed back from an output voltage so as to predict the energy of an output corresponding to its load states. While the energy delivered to an output terminal with its load remaining the same does not change, the energy delivered to an output terminal with its load changing is adjusted accordingly. The power conversion system thus effectively reduces the cross regulation effect and obtains excellent steady system output and transient response.

    摘要翻译: 用于降低交叉调节效应的功率转换系统和功率控制方法使用电压反馈调整电路来调制从输出电压反馈的误差信号,以便预测与其负载状态对应的输出的能量。 尽管输送端与其负载保持相同的能量并没有改变,但是相应地调整输出到其输出端的负载变化的能量。 因此,电力转换系统有效降低了交叉调节效应,获得了良好的稳定系统输出和瞬态响应。