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188 条记录 (耗时 0.03 秒)

    Single-chip common-drain JFET device and its applications
    71.
    发明申请
    Single-chip common-drain JFET device and its applications 有权

    公开(公告)号：US20090201079A1

    公开(公告)日：2009-08-13

    申请号：US12385720

    申请日：2009-04-17

    申请人： Liang-Pin Tai ,  Jing-Meng Liu ,  Hung-Der Su

    发明人： Liang-Pin Tai ,  Jing-Meng Liu ,  Hung-Der Su

    IPC分类号： G05F3/02

    CPC分类号： H01L27/098 ,  H01L27/0744 ,  H01L29/7722 ,  H01L29/8083

    摘要： A single-chip common-drain JFET device comprises a drain, two gates and two source arranged such that two common-drain JFETs are formed therewith. Due to the two JFETs merged within a single chip, no wire bonding connection is needed therebetween, thereby without parasitic inductance and resistance caused by bonding wire, and therefore improving the performance and reducing the package cost. The single-chip common-drain JFET device may be applied in buck converter, boost converter, inverting converter, switch, and two-step DC-to-DC converter to improve their performance and efficiency. Alternative single-chip common-drain JFET devices are also provided for current sense or proportional current generation.

    Power supply circuit and control method thereof
    72.
    发明授权
    Power supply circuit and control method thereof 有权
    电源电路及其控制方法

    公开(公告)号：US07557553B2

    公开(公告)日：2009-07-07

    申请号：US11650525

    申请日：2007-01-08

    申请人： Hung-Der Su ,  Jing-Meng Liu

    发明人： Hung-Der Su ,  Jing-Meng Liu

    IPC分类号： H03K19/0175

    CPC分类号： H02M3/156

    摘要： A power supply circuit and a control method are provided, in which the original enable pad and output pad, or the enable pad and feedback pad are used to trim the output voltage of the power supply circuit without extra trim pads.

    摘要翻译： 提供了电源电路和控制方法，其中原始使能焊盘和输出焊盘或使能焊盘和反馈焊盘用于修剪电源电路的输出电压而无需额外的修整焊盘。

    Power supply with high efficiency and low noise
    73.
    发明申请
    Power supply with high efficiency and low noise 失效
    电源效率高，噪音低

    公开(公告)号：US20080180073A1

    公开(公告)日：2008-07-31

    申请号：US12008272

    申请日：2008-01-10

    申请人： Jing-Meng Liu ,  Chung-Lung Pai ,  Wei-Che Chiu

    发明人： Jing-Meng Liu ,  Chung-Lung Pai ,  Wei-Che Chiu

    IPC分类号： G05F1/573 ,  G05F1/00

    CPC分类号： G05F1/575

    摘要： The present invention discloses a power supply comprising: a switching regulator circuit converting an input voltage to an intermediate voltage; a low dropout linear regulator circuit converting the intermediate voltage to an output voltage so as to supply a load current to a load; and a feedback control circuit which increases the noise filtering effect of the low dropout linear regulator circuit when the load current increases.

    摘要翻译： 本发明公开了一种电源，包括：将输入电压转换为中间电压的开关调节器电路; 将中间电压转换为输出电压以便向负载提供负载电流的低压差线性稳压器电路; 以及反馈控制电路，其在负载电流增加时增加低压降线性调节器电路的噪声滤波效果。

    Backlight control circuit
    74.
    发明申请
    Backlight control circuit 有权
    背光控制电路

    公开(公告)号：US20080094008A1

    公开(公告)日：2008-04-24

    申请号：US11906512

    申请日：2007-10-02

    申请人： Jing-Meng Liu

    发明人： Jing-Meng Liu

    IPC分类号： H05B37/02

    CPC分类号： H05B33/0827 ,  H05B33/0815

    摘要： The present invention discloses a backlight control circuit, comprising: a voltage supply circuit, under control by a control signal, for receiving an input voltage and generating an output voltage; a plurality of nodes for respectively indicating the current status of corresponding light emission device paths; and a high-low voltage comparison and amplifier circuit for generating the control signal according to a voltage difference between at least two nodes.

    摘要翻译： 本发明公开了一种背光控制电路，包括：电压供给电路，由控制信号控制，用于接收输入电压并产生输出电压; 分别表示对应的发光装置路径的当前状态的多个节点; 以及用于根据至少两个节点之间的电压差产生控制信号的高低电压比较和放大电路。

    Power management apparatus having an extended safe operation region and operation method thereof
    75.
    发明申请
    Power management apparatus having an extended safe operation region and operation method thereof 有权
    具有扩展的安全操作区域的电力管理装置及其操作方法

    公开(公告)号：US20080018177A1

    公开(公告)日：2008-01-24

    申请号：US11826449

    申请日：2007-07-16

    申请人： Hung-Der Su ,  Jing-Meng Liu

    发明人： Hung-Der Su ,  Jing-Meng Liu

    IPC分类号： H01H83/00

    CPC分类号： H02M1/08 ,  H02M3/156 ,  Y10T307/858

    摘要： Two step driving technique is used to turn on the power switch of a power management apparatus in such a manner that the power switch is weakly turned on first and then goes into a low ON-resistance region. The power switch is so avoided to operate at highest gate and drain voltages simultaneously even a non-uniform turn on happens, and is thereby away from avalanche breakdown. The safe operation region of the power management apparatus is therefore extended with minimum efficiency degradation.

    摘要翻译： 使用两步驱动技术，以使得电源开关首先弱开然后进入低导通电阻区域的方式来接通电源管理装置的电源开关。 电源开关如此避免同时在最高的栅极和漏极电压下工作，即使发生不均匀的导通，也因此远离雪崩击穿。 因此，功率管理装置的安全操作区域以最小的效率降低而延长。

    Synchronized data communication on a one-wired bus
    77.
    发明授权
    Synchronized data communication on a one-wired bus 失效
    在单线总线上同步数据通信

    公开(公告)号：US07180886B2

    公开(公告)日：2007-02-20

    申请号：US10153784

    申请日：2002-05-24

    申请人： Jing-Meng Liu ,  Kent Hwang ,  Chao-Hsuan Chuang ,  Cheng-Hsuan Fan

    发明人： Jing-Meng Liu ,  Kent Hwang ,  Chao-Hsuan Chuang ,  Cheng-Hsuan Fan

    IPC分类号： H04J3/06 ,  H04L12/50

    CPC分类号： H04L25/4923 ,  H04L7/06 ,  H04L25/4904

    摘要： In a synchronized data communication on a one-wired bus, it transmits and receives a synchronizing signal that segments part of or all proportions of the data signal by use of three electrically distinguishable statuses for the identifier of the synchronizing signal and the logic states of the data signal to increase the endurance of frequency displacement and resist influences of the interference of external conditions, low quality of transmission medium, and limitation of transmission distance and make the reliability and correctness of the signal transmission improve substantially. It is also clearly illustrated the feasibility and simplicity for implementing the one-wired synchronized communication by a plurality of exemplary signal types and a transceiver circuitry.

    摘要翻译： 在单线总线上的同步数据通信中，它发送和接收同步信号，该同步信号通过使用用于同步信号的标识符的三个电可区分状态以及数据信号的逻辑状态来分割数据信号的一部分或全部比例 数据信号增加频率位移的耐久性，抵抗外部条件干扰，传输介质质量差，传输距离限制的影响，使信号传输的可靠性和正确性大大提高。 还清楚地示出了通过多个示例性信号类型和收发器电路来实现单线同步通信的可行性和简单性。