公开(公告)号：US20120242238A1

公开(公告)日：2012-09-27

申请号：US13421733

申请日：2012-03-15

申请人： Pei-Yuan Chen ,  Chia-Wei Liao ,  Jing-Meng Liu ,  Leng-Nien Hsiu

发明人： Pei-Yuan Chen ,  Chia-Wei Liao ,  Jing-Meng Liu ,  Leng-Nien Hsiu

IPC分类号： H05B37/02

CPC分类号： H05B33/0815

摘要： The present invention discloses a light emitting device power supply circuit, a light emitting device driver circuit and a control method thereof. The light emitting device driver circuit is coupled to a tri-electrode AC switch (TRIAC) dimmer circuit, and it controls the brightness of a light emitting device circuit according a rectified dimming signal. The light emitting device driver circuit includes a power stage circuit and a light emitting device control circuit. The light emitting device control circuit generates a switch control signal. The power stage circuit operates at least one power switch thereof according to the switch control signal to generate a latching current for firing the TRIAC dimmer circuit, and the latching current is inputted to the light emitting device circuit.

摘要翻译： 本发明公开了一种发光装置电源电路，发光装置驱动电路及其控制方法。 发光器件驱动电路耦合到三极交流开关（TRIAC）调光电路，并根据整流调光信号控制发光器件电路的亮度。 发光器件驱动电路包括功率级电路和发光器件控制电路。 发光装置控制电路产生开关控制信号。 功率级电路根据开关控制信号操作其至少一个电源开关，以产生用于触发TRIAC调光电路的锁存电流，并且将锁存电流输入到发光器件电路。

公开(公告)号：US08222829B2

公开(公告)日：2012-07-17

申请号：US12799108

申请日：2010-04-19

申请人： Jing-Meng Liu

发明人： Jing-Meng Liu

IPC分类号： H05B41/38 ,  H05B37/02

CPC分类号： H02M3/33523 ,  H05B33/0815

摘要： The present invention discloses a driver circuit and a method for driving a load circuit. The driver circuit includes: a primary side circuit receiving rectified AC power; a transformer coupled to the primary side circuit and converting a primary voltage to a secondary voltage which is supplied to a load circuit; and a secondary side circuit coupled to the transformer, the secondary side circuit detecting current flowing through the load circuit and feedback controlling the primary side circuit accordingly.

摘要翻译： 本发明公开了一种用于驱动负载电路的驱动电路和方法。 驱动电路包括：一次侧电路接收整流的交流电; 耦合到初级侧电路并将初级电压转换为提供给负载电路的次级电压的变压器; 以及耦合到变压器的次级侧电路，次级侧电路检测流过负载电路的电流并相应地控制初级侧电路的反馈。

公开(公告)号：US08217632B2

公开(公告)日：2012-07-10

申请号：US12658560

申请日：2010-02-05

申请人： Jing-Meng Liu ,  Chia-Wei Liao ,  Heng Yun

发明人： Jing-Meng Liu ,  Chia-Wei Liao ,  Heng Yun

IPC分类号： G05F1/613 ,  G05F1/44

CPC分类号： H05B33/0818 ,  H02M3/1582

摘要： The present invention discloses a synchronous driver circuit, comprising: an inductor having one end coupled to an input voltage; a first power transistor having one end coupled to the other end of the inductor and another end supplying an output voltage; a second power transistor having one end coupled to the other end of the inductor and another end coupled to ground; a control circuit for controlling the operation of the first and second power transistors; a gate driver coupled to the control circuit and having an output controlling the gate of the first power transistor; and a bootstrap capacitor having one end coupled to a voltage node and the other end coupled to the other end of the inductor, the voltage across the bootstrap capacitor being provided as the operational voltage of the gate driver.

摘要翻译： 本发明公开了一种同步驱动器电路，包括：电感器，其一端耦合到输入电压; 第一功率晶体管，其一端耦合到电感器的另一端，另一端提供输出电压; 第二功率晶体管，其一端耦合到电感器的另一端，另一端耦合到地; 用于控制第一和第二功率晶体管的操作的控制电路; 耦合到控制电路并具有控制第一功率晶体管的栅极的输出的栅极驱动器; 以及自耦电容器，其一端耦合到电压节点，另一端耦合到电感器的另一端，所述自举电容器两端的电压被提供为栅极驱动器的工作电压。

公开(公告)号：US20100308749A1

公开(公告)日：2010-12-09

申请号：US12788757

申请日：2010-05-27

申请人： Jing-Meng Liu

发明人： Jing-Meng Liu

IPC分类号： H05B37/02

CPC分类号： H05B33/0845 ,  H05B33/0815 ,  Y02B20/347

摘要： The present invention discloses an AC power line controlled light emitting device dimming circuit and a method thereof. The AC power line controlled light emitting device dimming circuit includes: a light emitting device driver circuit for controlling current through a light emitting device, wherein the light emitting device is current-controlled; and a level adjustment circuit for detecting power-OFF of an AC power switch and generating a corresponding level adjustment signal which is transmitted to the light emitting device driver circuit to control the current through the light emitting device accordingly.

摘要翻译： 本发明公开了一种交流电力线控制发光装置调光电路及其方法。 AC电力线控制发光器件调光电路包括：发光器件驱动电路，用于控制通过发光器件的电流，其中发光器件是电流控制的; 以及电平调整电路，用于检测交流电源开关的断电并产生相应的电平调整信号，所述电平调整信号被传输到发光器件驱动电路，以相应地控制通过发光器件的电流。

公开(公告)号：US20100301761A1

公开(公告)日：2010-12-02

申请号：US12787599

申请日：2010-05-26

申请人： Chiawei Liao ,  Jing-Meng Liu ,  Leng-Nien Hsiu

发明人： Chiawei Liao ,  Jing-Meng Liu ,  Leng-Nien Hsiu

IPC分类号： H05B37/02

CPC分类号： H05B33/0818 ,  Y02B20/346

摘要： The present invention discloses a tail-less LED control circuit, which includes: a power supply stage having an output terminal which provides electrical power to an LED circuit; an output capacitor coupled to the output terminal; an LED driver circuit coupled to the power supply stage for controlling the power supply stage to provide the electrical power to the LED circuit, the LED driver circuit receiving a PWM dimming signal for adjusting brightness of the LED circuit; and a MOSFET switch coupled to the output capacitor in series, the MOSFET switch switching synchronously with the PWM dimming signal to alleviate LED afterglow, wherein the MOSFET switch includes a body diode having an anode-cathode direction against the discharge direction of the output capacitor.

摘要翻译： 本发明公开了一种无尾LED控制电路，其包括：具有向LED电路提供电力的输出端子的电源级; 耦合到所述输出端子的输出电容器; LED驱动器电路，其耦合到所述电源级，用于控制所述电源级以向所述LED电路提供电力，所述LED驱动器电路接收用于调节所述LED电路的亮度的PWM调光信号; 以及耦合到串联的输出电容器的MOSFET开关，MOSFET开关与PWM调光信号同步地切换以减轻LED余辉，其中MOSFET开关包括具有抵抗输出电容器的放电方向的阳极 - 阴极方向的体二极管。

公开(公告)号：US20100301760A1

公开(公告)日：2010-12-02

申请号：US12787574

申请日：2010-05-26

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 light emitting device array controller which controls a power stage to supply an output voltage to one end of each of a plurality of light emitting device strings. The other end of each of the light emitting device strings is coupled to a corresponding transistor having a current inflow end, a current outflow end and a control end. The present invention obtains signals from the control ends of the transistors instead of the current inflow ends, and feedback controls the output voltage according to the highest voltage of the control ends. Thus, the number of pins required for a circuit chip is reduced.

摘要翻译： 本发明公开了一种发光器件阵列控制器，其控制功率级以将输出电压提供给多个发光器件串中的每一个的一端。 每个发光器件串的另一端耦合到具有电流流入端，电流流出端和控制端的相应晶体管。 本发明从晶体管的控制端而不是电流流入端获得信号，反馈根据控制端的最高电压来控制输出电压。 因此，减少了电路芯片所需的引脚数。

公开(公告)号：US07808756B2

公开(公告)日：2010-10-05

申请号：US12012691

申请日：2008-02-06

申请人： Jing-Meng Liu

发明人： Jing-Meng Liu

IPC分类号： H02H3/00 ,  H02H9/08

CPC分类号： H02M1/32

摘要： The present invention discloses a short circuit protection circuit comprising: a first input terminal; a second input terminal; an output terminal; at least two transistors including a first and a second transistors connected in series with each other and electrically connected between the first input terminal and the output terminal; and a voltage source circuit electrically connected with the first input terminal, the second input terminal, the output terminal, and the gates of the first and second transistors.

摘要翻译： 本发明公开了一种短路保护电路，包括：第一输入端; 第二输入端; 输出端子; 至少两个晶体管，包括彼此串联连接并电连接在第一输入端和输出端之间的第一和第二晶体管; 以及与第一和第二晶体管的第一输入端子，第二输入端子，输出端子和栅极电连接的电压源电路。

公开(公告)号：US20100225237A1

公开(公告)日：2010-09-09

申请号：US12782253

申请日：2010-05-18

申请人： Jing-Meng Liu

发明人： Jing-Meng Liu

IPC分类号： H05B37/02

CPC分类号： H05B33/0896 ,  H05B33/0827

摘要： The present invention discloses a current-matching method comprising steps of: providing a plurality of current channels; grouping the plurality of current channels into W sets, each of which has Q channels; and matching the channels of the same set in current, where both W and Q are integers greater than or equal to 2.

摘要翻译： 本发明公开了一种电流匹配方法，包括以下步骤：提供多个电流通道; 将多个当前信道分组为W组，每组具有Q个信道; 并且匹配当前的同一集合的信道，其中W和Q都是大于或等于2的整数。

公开(公告)号：US07573211B2

公开(公告)日：2009-08-11

申请号：US11809850

申请日：2007-06-04

申请人： Jing-Meng Liu

发明人： Jing-Meng Liu

IPC分类号： G05F1/00

CPC分类号： H05B33/0827 ,  H05B33/0815

摘要： The present invention discloses a backlight control circuit, comprising: a voltage supply circuit, which is a boost converter circuit for receiving an input voltage from an input terminal and generating an output voltage to an output terminal, the output voltage being provided as an operating voltage for a plurality of light emitting devices; at least one input capacitor electrically connected between the input terminal and ground; and at least one output capacitor electrically connected between the output terminal and the input terminal.

摘要翻译： 本发明公开了一种背光控制电路，包括：电压供应电路，其是用于从输入端子接收输入电压并向输出端子产生输出电压的升压转换器电路，输出电压被提供为工作电压 用于多个发光器件; 至少一个输入电容器电连接在输入端子和地之间; 以及电连接在输出端子和输入端子之间的至少一个输出电容器。

公开(公告)号：US20090066261A1

公开(公告)日：2009-03-12

申请号：US11851569

申请日：2007-09-07

申请人： Jing-Meng Liu

发明人： Jing-Meng Liu

IPC分类号： H05B41/36

CPC分类号： H05B33/0866 ,  H05B33/0827 ,  H05B33/086

摘要： The present invention discloses a multi-color backlight control circuit, comprising: a plurality of pins for electrically connecting with a plurality of LED strings of different LED colors; and a voltage supply circuit for receiving an input voltage and supplying a single output voltage to the plurality of LED strings of different LED colors. The present invention also discloses a multi-color backlight control method, comprising: supplying a single output voltage to a plurality of LED strings of different LED colors.

摘要翻译： 本发明公开了一种多色背光控制电路，包括：多个引脚，用于与多个不同LED颜色的LED串电连接; 以及电压供给电路，用于接收输入电压并将单个输出电压提供给具有不同LED颜色的多个LED串。 本发明还公开了一种多色背光控制方法，包括：将单个输出电压提供给不同LED颜色的多个LED串。