公开(公告)号：US06803798B1

公开(公告)日：2004-10-12

申请号：US10639503

申请日：2003-08-13

申请人： Wei-Hsin Wei ,  Sheng-Yi Ho ,  Jung-Lin Chang

发明人： Wei-Hsin Wei ,  Sheng-Yi Ho ,  Jung-Lin Chang

IPC分类号： H03K502

CPC分类号： H03F3/217 ,  H03G3/00 ,  H03G3/3021

摘要： The invention provides an output control apparatus for adjusting the output level of a pulse width modulation (PWM) signal by changing the amplitude level of the output PWM signal. The output control apparatus comprises a control signal generator, a digital-to-analog converter (DAC), and an output circuit. The control signal generator generates a digital control signal. The DAC outputs a predetermined level according to the digital control signal. The output circuit with a negative feedback loop receives the PWM signal and receives the predetermined level by the negative feedback loop. While the PWM signal is logic number “0”, the negative feedback loop is not switched on, so as to control the level of the PWM signal at a base level. While the PWM signal is logic number “1”, the negative feedback loop is switched on, so as to control the level of the PWM signal at the predetermined level.

摘要翻译： 本发明提供一种输出控制装置，用于通过改变输出PWM信号的幅度电平来调节脉宽调制（PWM）信号的输出电平。 输出控制装置包括控制信号发生器，数模转换器（DAC）和输出电路。 控制信号发生器产生数字控制信号。 DAC根据数字控制信号输出预定电平。 具有负反馈回路的输出电路接收PWM信号并通过负反馈回路接收预定电平。 当PWM信号为逻辑编号“0”时，负反馈环路不接通，以便控制基准电平的PWM信号电平。 当PWM信号为逻辑编号“1”时，负反馈环路导通，以便将PWM信号的电平控制在预定电平。

公开(公告)号：US20070132678A1

公开(公告)日：2007-06-14

申请号：US11704244

申请日：2007-02-09

申请人： Wei-Hsin Wei ,  Shui-Mu Lin ,  Chien-Sheng Chen ,  Tsung-Wei Huang ,  Chin-Chiang Yeh ,  Chin-Tsung Chen

发明人： Wei-Hsin Wei ,  Shui-Mu Lin ,  Chien-Sheng Chen ,  Tsung-Wei Huang ,  Chin-Chiang Yeh ,  Chin-Tsung Chen

IPC分类号： G09G3/32

CPC分类号： H05B33/0827 ,  G09G3/3406 ,  H05B33/0815 ,  Y02B20/346

摘要： A dimming method for LED driving circuit is proposed. By temporary switching a pin that is originally used for the input/output of other electric signals to a high impedance node, the dimming control signal may be inputted to dim LEDs. The dimming method comprises the steps of: floating the pin every a period of time to pull the pin's voltage being equal to the dimming control signal; detecting the pin's voltage; and retrieving the dimming control signal in accordance with the detected pin's voltage and thereafter dimming the LEDs.

摘要翻译： 提出了一种LED驱动电路的调光方法。 通过将最初用于其他电信号的输入/输出的引脚临时切换到高阻抗节点，调光控制信号可以被输入到暗淡的LED。 该调光方法包括以下步骤：每隔一段时间浮动引脚以将引脚的电压拉至等于调光控制信号; 检测引脚的电压; 以及根据检测到的引脚的电压检索调光控制信号，然后对LED进行调光。

公开(公告)号：US08169159B2

公开(公告)日：2012-05-01

申请号：US12232696

申请日：2008-09-23

申请人： Chien-Ping Lu ,  Wei-Hsin Wei ,  Kwan-Jen Chu ,  Tzu-Huan Chiu

发明人： Chien-Ping Lu ,  Wei-Hsin Wei ,  Kwan-Jen Chu ,  Tzu-Huan Chiu

IPC分类号： G05F1/00 ,  H05B37/02 ,  H05B39/04 ,  H05B41/36

CPC分类号： H05B33/0815

摘要： A LED driver is disclosed for providing a current for LED lighting. The LED driver includes an inductor and a controller having a power switch, and the inductor, the power switch and a LED to be driven are configured to be an asynchronous boost converter. Because the driven LED serves as a rectifier diode of the asynchronous boost converter, the controller may have fewer components and requires smaller die area.

摘要翻译： 公开了一种用于为LED照明提供电流的LED驱动器。 LED驱动器包括电感器和具有电源开关的控制器，并且电感器，电源开关和要驱动的LED被配置为异步升压转换器。 由于驱动LED用作异步升压转换器的整流二极管，所以控制器可能具有较少的元件并且需要更小的管芯面积。

公开(公告)号：US07327124B2

公开(公告)日：2008-02-05

申请号：US11388158

申请日：2006-03-24

申请人： Jing-Meng Liu ,  Chung-Lung Pai ,  Hung-Der Su ,  Wei-Hsin Wei

发明人： Jing-Meng Liu ,  Chung-Lung Pai ,  Hung-Der Su ,  Wei-Hsin Wei

IPC分类号： G05F1/577

CPC分类号： H02M3/157 ,  H02M3/1588 ,  Y02B70/1466

摘要： A plurality of switches, an inductor and two capacitors are configured to be a boost-inverting converter. To operate the converter in a boost-inverting mode, a control apparatus and method switch the switches such that the inductor is energized in a first phase, the first capacitor is discharged to produce an inverting voltage in a second phase, and the capacitor Cout1 is discharged to produce the inverting voltage and the second capacitor is charged to produce a boost voltage in a third phase. Therefore, the boost-inverting converter has lower peak inductor current and less power loss, and the limitation to the switch design for the boost-inverting converter is relaxed.

摘要翻译： 多个开关，电感器和两个电容器被配置为升压反相转换器。 为了在升压反转模式下操作转换器，控制装置和方法切换开关使得电感器在第一相中通电，第一电容器被放电以产生第二相的反相电压，并且电容器Cout 1 被放电以产生反相电压，并且第二电容器被充电以在第三相中产生升压电压。 因此，升压反相转换器具有较低的峰值电感电流和较小的功率损耗，并且对升压反相转换器的开关设计的限制放宽。

公开(公告)号：US20060279331A1

公开(公告)日：2006-12-14

申请号：US11217341

申请日：2005-09-02

申请人： Shui-Mu Lin ,  Chien-Sheng Chen ,  Nien-Hui Kung ,  Der-Jiunn Wang ,  Jing-Meng Liu ,  Wei-Hsin Wei

发明人： Shui-Mu Lin ,  Chien-Sheng Chen ,  Nien-Hui Kung ,  Der-Jiunn Wang ,  Jing-Meng Liu ,  Wei-Hsin Wei

IPC分类号： H03K19/00

CPC分类号： G06F1/26

摘要： A voltage generating circuit, which generates tri-state logic output in accordance with high, low or floating of the input node, is proposed. The present voltage generating circuit includes: a pulse generating circuit for generating a plurality of pulses; a voltage selecting circuit having a pair of NMOS transistors coupled in common source, each drain of the NMOS transistors is coupled to a current source respectively, both gates of the NMOS transistors are coupled to an input node, and the paired drain of the NMOS transistors generate a pair of voltage output; a plurality of flip-flops, which couple to drains of the NMOS transistors to lock the voltage output of the NMOS transistors in accordance with the pulses; an inner voltage-generating unit couples to the input node for providing a floating voltage level; and a plurality of switches controlled by the pulses for controlling the normal operation of the voltage selecting circuit and the conduction between the inner-voltage generating unit with the input node.

摘要翻译： 提出了根据输入节点的高，低或浮动产生三态逻辑输出的电压产生电路。 本电压发生电路包括：产生多个脉冲的脉冲发生电路; 一个电压选择电路，具有耦合在公共源极上的一对NMOS晶体管，NMOS晶体管的每个漏极分别耦合到电流源，NMOS晶体管的两个栅极耦合到输入节点，并且NMOS晶体管的成对漏极 产生一对电压输出; 多个触发器，其耦合到NMOS晶体管的漏极以根据脉冲锁定NMOS晶体管的电压输出; 内部电压产生单元耦合到输入节点以提供浮动电压电平; 以及由用于控制电压选择电路的正常操作的脉冲控制的多个开关以及内部电压产生单元与输入节点之间的导通。

公开(公告)号：US07122971B2

公开(公告)日：2006-10-17

申请号：US10976809

申请日：2004-11-01

申请人： Ching-Chiang Yeh ,  Chung-Lung Pai ,  Wei-Hsin Wei

发明人： Ching-Chiang Yeh ,  Chung-Lung Pai ,  Wei-Hsin Wei

IPC分类号： H05B37/00 ,  H05B39/00

CPC分类号： H05B33/0815 ,  H05B33/0827

摘要： A driver circuit for a DC light source supplies a voltage generated by a DC-to-DC converter for a plurality of lamp strings connected in parallel and a plurality of driving currents generated by a current mirror for the lamp strings, such that the lamp strings may have well controlled or uniform brightness.

摘要翻译： 用于DC光源的驱动电路为并联连接的多个灯串提供由DC-DC转换器产生的电压以及由灯串的电流镜产生的多个驱动电流，使得灯串 可能具有良好的控制或均匀的亮度。

公开(公告)号：US07385422B2

公开(公告)日：2008-06-10

申请号：US11217341

申请日：2005-09-02

申请人： Shui-Mu Lin ,  Chien-Sheng Chen ,  Nien-Hui Kung ,  Der-Jiunn Wang ,  Jing-Meng Liu ,  Wei-Hsin Wei

发明人： Shui-Mu Lin ,  Chien-Sheng Chen ,  Nien-Hui Kung ,  Der-Jiunn Wang ,  Jing-Meng Liu ,  Wei-Hsin Wei

IPC分类号： H03K19/02

CPC分类号： G06F1/26

摘要： A voltage generating circuit, which generates tri-state logic output in accordance with high, low or floating of the input node, is proposed. The present voltage generating circuit includes: a pulse generating circuit for generating a plurality of pulses; a voltage selecting circuit having a pair of NMOS transistors coupled in common source, each drain of the NMOS transistors is coupled to a current source respectively, both gates of the NMOS transistors are coupled to an input node, and the paired drain of the NMOS transistors generate a pair of voltage output; a plurality of flip-flops, which couple to drains of the NMOS transistors to lock the voltage output of the NMOS transistors in accordance with the pulses; an inner voltage-generating unit couples to the input node for providing a floating voltage level; and a plurality of switches controlled by the pulses for controlling the normal operation of the voltage selecting circuit and the conduction between the inner-voltage generating unit with the input node.

摘要翻译： 提出了根据输入节点的高，低或浮动产生三态逻辑输出的电压产生电路。 本电压发生电路包括：产生多个脉冲的脉冲发生电路; 一个电压选择电路，具有耦合在公共源极上的一对NMOS晶体管，NMOS晶体管的每个漏极分别耦合到电流源，NMOS晶体管的两个栅极耦合到输入节点，并且NMOS晶体管的成对漏极 产生一对电压输出; 多个触发器，其耦合到NMOS晶体管的漏极以根据脉冲锁定NMOS晶体管的电压输出; 内部电压产生单元耦合到输入节点以提供浮动电压电平; 以及由用于控制电压选择电路的正常操作的脉冲控制的多个开关以及内部电压产生单元与输入节点之间的导通。

公开(公告)号：US07368977B2

公开(公告)日：2008-05-06

申请号：US11288242

申请日：2005-11-29

申请人： Wei-Hsin Wei ,  Shui-Mu Lin ,  Chien-Sheng Chen ,  Tsung-Wei Huang ,  Chin-Chiang Yeh ,  Chin-Tsung Chen

发明人： Wei-Hsin Wei ,  Shui-Mu Lin ,  Chien-Sheng Chen ,  Tsung-Wei Huang ,  Chin-Chiang Yeh ,  Chin-Tsung Chen

IPC分类号： G05F1/10

CPC分类号： H05B33/0827 ,  G09G3/3406 ,  H05B33/0815 ,  Y02B20/346

摘要： A dimming method for LED driving circuit is proposed. By temporary switching a pin that is originally used for the input/output of other electric signals to a high impedance node, the dimming control signal may be inputted to dim LEDs. The dimming method comprises the steps of: floating the pin every a period of time to pull the pin's voltage being equal to the dimming control signal; detecting the pin's voltage; and retrieving the dimming control signal in accordance with the detected pin's voltage and thereafter dimming the LEDs.

摘要翻译： 提出了一种LED驱动电路的调光方法。 通过将最初用于其他电信号的输入/输出的引脚临时切换到高阻抗节点，调光控制信号可以被输入到暗淡的LED。 该调光方法包括以下步骤：每隔一段时间浮动引脚以将引脚的电压拉至等于调光控制信号; 检测引脚的电压; 以及根据检测到的引脚的电压检索调光控制信号，然后对LED进行调光。

公开(公告)号：US20060279565A1

公开(公告)日：2006-12-14

申请号：US11288242

申请日：2005-11-29

申请人： Wei-Hsin Wei ,  Shui-Mu Lin ,  Chien-Sheng Chen ,  Tsung-Wei Huang ,  Chin-Chiang Yeh ,  Chin-Tsung Chen

发明人： Wei-Hsin Wei ,  Shui-Mu Lin ,  Chien-Sheng Chen ,  Tsung-Wei Huang ,  Chin-Chiang Yeh ,  Chin-Tsung Chen

IPC分类号： G09G5/00

CPC分类号： H05B33/0827 ,  G09G3/3406 ,  H05B33/0815 ,  Y02B20/346

摘要： A dimming method for LED driving circuit is proposed. By temporary switching a pin that is originally used for the input/output of other electric signals to a high impedance node, the dimming control signal may be inputted to dim LEDs. The dimming method comprises the steps of: floating the pin every a period of time to pull the pin's voltage being equal to the dimming control signal; detecting the pin's voltage; and retrieving the dimming control signal in accordance with the detected pin's voltage and thereafter dimming the LEDs.

摘要翻译： 提出了一种LED驱动电路的调光方法。 通过将最初用于其他电信号的输入/输出的引脚临时切换到高阻抗节点，调光控制信号可以被输入到暗淡的LED。 该调光方法包括以下步骤：每隔一段时间浮动引脚以将引脚的电压拉至等于调光控制信号; 检测引脚的电压; 以及根据检测到的引脚的电压检索调光控制信号，然后对LED进行调光。

公开(公告)号：US20060214648A1

公开(公告)日：2006-09-28

申请号：US11388158

申请日：2006-03-24

申请人： Jing-Meng Liu ,  Chung-Lung Pai ,  Hung-Der Su ,  Wei-Hsin Wei

发明人： Jing-Meng Liu ,  Chung-Lung Pai ,  Hung-Der Su ,  Wei-Hsin Wei

IPC分类号： G05F1/00

CPC分类号： H02M3/157 ,  H02M3/1588 ,  Y02B70/1466

摘要： A plurality of switches, an inductor and two capacitors are configured to be a boost-inverting converter. To operate the converter in a boost-inverting mode, a control apparatus and method switch the switches such that the inductor is energized in a first phase, the first capacitor is discharged to produce an inverting voltage in a second phase, and the second capacitor is charged to produce a boost voltage in a third phase. Therefore, the boost-inverting converter has lower peak inductor current and less power loss, and the limitation to the switch design for the boost-inverting converter is relaxed.

摘要翻译： 多个开关，电感器和两个电容器被配置为升压反相转换器。 为了在升压反转模式下操作转换器，控制装置和方法切换开关使得电感器在第一相中通电，第一电容器被放电以在第二相中产生反相电压，并且第二电容器 充电以在第三相中产生升压电压。 因此，升压反相转换器具有较低的峰值电感电流和较小的功率损耗，并且对升压反相转换器的开关设计的限制放宽。