公开(公告)号：US20080111576A1

公开(公告)日：2008-05-15

申请号：US12014379

申请日：2008-01-15

申请人： You-Yuh Shyr ,  Sorin Negru

发明人： You-Yuh Shyr ,  Sorin Negru

IPC分类号： G01R31/26

CPC分类号： H03M1/1014 ,  G01R31/316 ,  G11C17/18 ,  H03M1/742

摘要： A programmable after-package, on-chip reference voltage trim circuit for an integrated circuit having a plurality of programmable trim cells generating a programmed sequence. A converter is provided to convert the bit sequence into a trim current. The trim current is added to an initial value of a reference voltage to be trimmed, as generated by the integrated circuit. Once the correct value of the trim current is determined, isolation circuitry is programmed to isolate the trim circuitry from the remainder of the IC, thereby freeing the logic and package pins associated with the IC for use by users of the IC. The preferred trim circuitry includes fuses which are blown in accordance with a bit value supplied to the trim cell to permanently fix a trim current value, once a best fit value is determined.

摘要翻译： 一种用于集成电路的可编程后置封装，片上参考电压微调电路，具有产生编程序列的多个可编程微调单元。 提供A转换器以将位序列转换成微调电流。 由集成电路产生的微调电流被添加到要修整的参考电压的初始值。 一旦确定了修正电流的正确值，就对隔离电路进行编程，以将修整电路与IC的其余部分隔离，从而释放与IC相关联的逻辑和封装引脚以供IC的用户使用。 优选的微调电路包括根据提供给微调单元的位值而被吹送的熔丝，以一旦确定最佳拟合值，就永久地固定微调电流值。

公开(公告)号：US07106566B2

公开(公告)日：2006-09-12

申请号：US10615458

申请日：2003-07-08

申请人： Kwang H. Liu ,  Sorin Negru ,  George Hsieh ,  Jacky Chen ,  Frank Shih ,  Scott Wu

发明人： Kwang H. Liu ,  Sorin Negru ,  George Hsieh ,  Jacky Chen ,  Frank Shih ,  Scott Wu

IPC分类号： H02H3/00

CPC分类号： H02H3/202 ,  H02H3/207 ,  H02H11/002

摘要： An integrated circuit (IC) has logic and timing circuits that are coupled to discrete circuitry to provide protection and indications whenever an AC adapter that is faulty or has improper voltage levels or polarity are plugged into a system. In particular, the IC device provides over-voltage, under-voltage, and reversed-polarity protections to an electronic system to keep the electronic system from being damaged by an alternating current (AC) adapter having an improper voltage range or voltage polarity. It also provides a protection that prevents an adapter from powering a host system that has a short-circuit fault.

摘要翻译： 集成电路（IC）具有耦合到分立电路的逻辑和定时电路，以便每当故障或具有不正确的电压电平或极性的AC适配器插入系统时提供保护和指示。 特别地，IC器件向电子系统提供过电压，欠压和反向极性保护，以保持电子系统不被具有不正确的电压范围或电压极性的交流（AC）适配器损坏。 它还提供防止适配器为具有短路故障的主机系统供电的保护。

公开(公告)号：US20080001547A1

公开(公告)日：2008-01-03

申请号：US11533737

申请日：2006-09-20

申请人： Sorin Negru

发明人： Sorin Negru

IPC分类号： H05B33/08

CPC分类号： H02J7/0065 ,  H05B33/0818 ,  H05B33/0827 ,  H05B33/083 ,  H05B33/0866 ,  Y02B20/347

摘要： Systems and methods are described that provide an efficient and cost-effective LED driver for controlling strings of LEDs. Embodiments described include an LED driver that comprises an adaptive boost converter and current source that cooperate to provide a desired light output from energized LEDs. Systems and methods are also described that modulate the excitation of the LEDs using a pulsed signal to obtain brightness control. Techniques are described for controlling the operation of individual LEDs in a string of LEDs such that a desired level of light output can be achieved. Embodiments are described in which multicolored LEDs can be included in strings of LEDs and excitation of the individual LEDs can be controlled to obtained a desired color of output.

摘要翻译： 描述了提供用于控制LED串的高效且具有成本效益的LED驱动器的系统和方法。 所描述的实施例包括LED驱动器，其包括自适应升压转换器和电流源，其协作以从通电的LED提供期望的光输出。 还描述了使用脉冲信号调制LED的激发以获得亮度控制的系统和方法。 描述了用于控制一串LED中的各个LED的操作的技术，使得可以实现期望的光输出水平。 描述了其中可以将LED显示在LED串中并且可以控制各个LED的激发以获得期望的输出颜色的实施例。

公开(公告)号：US20050007711A1

公开(公告)日：2005-01-13

申请号：US10615458

申请日：2003-07-08

申请人： Kwang Liu ,  Sorin Negru ,  George Hsieh ,  Jacky Chen ,  Frank Shih ,  Scott Wu

发明人： Kwang Liu ,  Sorin Negru ,  George Hsieh ,  Jacky Chen ,  Frank Shih ,  Scott Wu

IPC分类号： H02H3/20 ,  H02H11/00

CPC分类号： H02H3/202 ,  H02H3/207 ,  H02H11/002

摘要： An integrated circuit (IC) has logic and timing circuits that are coupled to discrete circuitry to provide protection and indications whenever an AC adapter that is faulty or has improper voltage levels or polarity are plugged into a system. In particular, the IC device provides over-voltage, under-voltage, and reversed-polarity protections to an electronic system to keep the electronic system from being damaged by an alternating current (AC) adapter having an improper voltage range or voltage polarity. It also provides a protection that prevents an adapter from powering a host system that has a short-circuit fault.

摘要翻译： 集成电路（IC）具有耦合到分立电路的逻辑和定时电路，以便每当故障或具有不正确的电压电平或极性的AC适配器插入系统时提供保护和指示。 特别地，IC器件向电子系统提供过电压，欠压和反向极性保护，以保持电子系统不被具有不正确的电压范围或电压极性的交流（AC）适配器损坏。 它还提供防止适配器为具有短路故障的主机系统供电的保护。

公开(公告)号：US20050243022A1

公开(公告)日：2005-11-03

申请号：US11116724

申请日：2005-04-28

申请人： Sorin Negru

发明人： Sorin Negru

IPC分类号： G09G3/14 ,  H05B33/08

CPC分类号： H05B33/0857 ,  G09G3/3413 ,  H05B33/0815 ,  H05B33/083

摘要： A LED driver is connectible to several series connected RGB LEDs which connect in series with a current generator. A plurality of LED switches are respectively connectible across one RGB LED. Each LED switch, operating in response to a binary signal is either open to permit electrical current to flow through the RGB LED, or closed to shunt current around that RGB LED. By varying respective duty cycles of the binary signals the LED driver is adapted for controlling operation of the combined RGB LEDs so they emit differing colors of light. An adaptive boost converter LED driver continuously adjusts voltage applied across the series connected RGB LEDs to be only that required for operating those LEDs through which open LED switches permit current to flow.

摘要翻译： LED驱动器可连接到与电流发生器串联连接的几个串联的RGB LED。 多个LED开关分别可连接在一个RGB LED上。 响应于二进制信号操作的每个LED开关是打开的，以允许电流流过RGB LED，或者闭合以分流该RGB LED周围的电流。 通过改变二进制信号的各自的占空比，LED驱动器适于控制组合的RGB LED的操作，从而它们发射不同颜色的光。 自适应升压转换器LED驱动器连续调节串联连接的RGB LED上施加的电压，仅仅是操作那些LED的开关LED开关允许电流流动所需的电压。