公开(公告)号：US20130169177A1

公开(公告)日：2013-07-04

申请号：US13728541

申请日：2012-12-27

申请人： Chia-Wei Liao ,  Leng-Nien Hsin ,  Pei-Yuan Chen ,  Roland Van Roy ,  Jing-Meng Liu

发明人： Chia-Wei Liao ,  Leng-Nien Hsin ,  Pei-Yuan Chen ,  Roland Van Roy ,  Jing-Meng Liu

IPC分类号： G05F1/455 ,  G05F3/02 ,  H05B37/02

CPC分类号： G05F1/455 ,  G05F1/10 ,  G05F3/02 ,  H05B33/0815 ,  H05B37/02 ,  Y02B20/346

摘要： The present invention discloses an active bleeder circuit capable of triggering a tri-electrode AC switch (TRIAC) circuit in all phase. The active bleeder circuit receives a rectified signal having an OFF phase and an ON phase. The active bleeder includes: a detection circuit for generating a detection signal according to the rectified signal and accumulating the detection signal in the OFF phase of the rectified signal; and a current sinker circuit coupled to the detection circuit, for generates a latching current to trigger the TRIAC circuit by operating a switch when the detection signal exceeds a predetermined level. The present invention also discloses a light emitting device power supply circuit and a TRIAC control method using the active bleeder circuit.

摘要翻译： 本发明公开了一种能够全相触发三电极交流开关（TRIAC）电路的有源放电电路。 有源泄放电路接收具有OFF相位和ON相位的整流信号。 有源放电器包括：检测电路，用于根据整流信号产生检测信号，并将检测信号累积在整流信号的OFF相位; 以及耦合到检测电路的电流沉降电路，用于当检测信号超过预定电平时，通过操作开关产生触发TRIAC电路的锁存电流。 本发明还公开了一种使用有源泄放电路的发光器件电源电路和TRIAC控制方法。

公开(公告)号：US08441196B2

公开(公告)日：2013-05-14

申请号：US13175653

申请日：2011-07-01

申请人： Jing-Meng Liu

发明人： Jing-Meng Liu

IPC分类号： H05B37/00

CPC分类号： H05B33/086 ,  H05B33/0827

摘要： The present invention discloses a multi-color light emitting device circuit, which includes: multiple light emitting device strings of different colors, a timing control circuit, a power regulator circuit, and preferably a dark feedback circuit. Each light emitting device string has multiple light emitting devices coupled in series. The number of the light emitting devices of each light emitting device string is determined by an operational voltage of the light emitting device, wherein at least two of the light emitting device strings have different numbers of the light emitting devices, such that voltage drops of the two light emitting device strings are closer to each other than in a case wherein the two light emitting device strings have the same number of the light emitting devices, and the response time of the light emitting device strings are increased.

摘要翻译： 本发明公开了一种多色发光器件电路，其包括：多种不同颜色的发光器件串，定时控制电路，功率调节电路，最好是暗反馈电路。 每个发光器件串具有串联耦合的多个发光器件。 每个发光器件串的发光器件的数量由发光器件的工作电压确定，其中至少两个发光器件串具有不同数量的发光器件，使得发光器件的电压降 两个发光器件串比两个发光器件串具有相同数量的发光器件的情况彼此更接近，并且发光器件串的响应时间增加。

公开(公告)号：US08400072B2

公开(公告)日：2013-03-19

申请号：US12942179

申请日：2010-11-09

申请人： Pei-Cheng Huang ,  Jing-Meng Liu ,  Roland Van Roy

发明人： Pei-Cheng Huang ,  Jing-Meng Liu ,  Roland Van Roy

IPC分类号： H05B41/16 ,  H05B41/24 ,  H05B37/00 ,  H05B39/00 ,  H05B41/00 ,  H05B37/02 ,  H05B39/04 ,  G05F1/00

CPC分类号： H05B33/0818

摘要： The present invention discloses a light emitting device driver circuit and a method for driving a light emitting device. In the present invention, the secondary windings of a transformer provide positive and negative secondary voltages, so as to generate positive and negative output voltages. A light emitting device circuit is coupled between the positive and negative output voltages. As such, the specification to withstand high voltage for a device in the circuit is reduced.

摘要翻译： 本发明公开了一种发光器件驱动电路和驱动发光器件的方法。 在本发明中，变压器的次级绕组提供正和负二次电压，从而产生正和负的输出电压。 发光器件电路耦合在正和负输出电压之间。 因此，降低了用于承受电路中器件的高电压的规范。

公开(公告)号：US08288967B2

公开(公告)日：2012-10-16

申请号：US12721829

申请日：2010-03-11

申请人： Jing-Meng Liu

发明人： Jing-Meng Liu

IPC分类号： H05B37/02

CPC分类号： H05B33/0848 ,  H05B33/0818 ,  Y02B20/346

摘要： A LED control circuit and method determine the frequency and duty of a LED driving signal according to a swing control signal and a dimming control signal, respectively. Responsive to the swing control signal, a pulse edge generator generates a clock whose frequency is determined by the swing control signal. Responsive to the clock and the dimming control signal, a duty ratio controller generates the LED driving signal whose frequency is determined by the clock frequency and whose duty is determined by the dimming control signal.

摘要翻译： LED控制电路和方法分别根据摆动控制信号和调光控制信号确定LED驱动信号的频率和占空比。 响应于摆动控制信号，脉冲沿发生器产生频率由摆动控制信号确定的时钟。 占空比控制器响应时钟和调光控制信号，产生频率由时钟频率确定的LED驱动信号，其占空比由调光控制信号决定。

公开(公告)号：US08072153B2

公开(公告)日：2011-12-06

申请号：US13004293

申请日：2011-01-11

申请人： Jing-Meng Liu

发明人： Jing-Meng Liu

IPC分类号： H05B37/00

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。

公开(公告)号：US07839667B2

公开(公告)日：2010-11-23

申请号：US12071727

申请日：2008-02-26

申请人： Chia-Wei Liao ,  Jing-Meng Liu ,  Jwin-Yen Guo

发明人： Chia-Wei Liao ,  Jing-Meng Liu ,  Jwin-Yen Guo

IPC分类号： H02M3/24

CPC分类号： H02M3/156 ,  H02M2001/0009

摘要： In an adaptive leading-edge blanking circuit and method for a switching mode power converter, an inductor current of the converter is sensed and compared with a threshold to decide an end point of a leading-edge blanking time. Circuit and method are further provided for preventing the converter from entering pulse skipping mode, which employs a current trimming circuit in an oscillator for a PWM controller in the converter to reduce a charging current in the oscillator if the output voltage of the converter is excessively high, to thereby reduce the oscillator frequency and in turn lower the switching frequency of a high-side power switch of the converter.

摘要翻译： 在用于开关模式功率转换器的自适应前沿消隐电路和方法中，感测转换器的电感器电流并将其与阈值进行比较以决定前沿消隐时间的终点。 进一步提供电路和方法，用于防止转换器进入脉冲跳跃模式，其在转换器中的PWM控制器的振荡器中采用电流微调电路，以在转换器的输出电压过高时降低振荡器中的充电电流 ，从而降低振荡器频率，从而降低转换器的高侧功率开关的开关频率。

公开(公告)号：US07838900B2

公开(公告)日：2010-11-23

申请号：US12385718

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： H01L29/74 ,  H01L31/111

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.

摘要翻译： 单芯片公共漏极JFET器件包括漏极，两个栅极和两个源极，使得与其形成两个公共漏极JFET。 由于在单个芯片内合并的两个JFET，其间不需要引线接合连接，因此没有由接合线引起的寄生电感和电阻，因此提高性能并降低封装成本。 单片式公共漏极JFET器件可以应用于降压转换器，升压转换器，反相转换器，开关和两级DC-DC转换器，以提高其性能和效率。 还提供了用于电流感测或比例电流产生的替代单芯片公共漏极JFET器件。

公开(公告)号：US20100026256A1

公开(公告)日：2010-02-04

申请号：US12292185

申请日：2008-11-13

申请人： Jing-Meng Liu ,  An-Tung Chen ,  Fu-Shiang Lai

发明人： Jing-Meng Liu ,  An-Tung Chen ,  Fu-Shiang Lai

IPC分类号： G05F1/10

CPC分类号： H02M3/158 ,  H02M3/1588 ,  H02M2001/0032 ,  Y02B70/1466 ,  Y02B70/16

摘要： A switching regulator may operate in a synchronous mode or an asynchronous mode. When the load current is higher than a threshold, the switching regulator switches a pair of serially connected high side and low side switches with a pulse width modulation signal. When the load current is lower than the threshold, the pulse width modulation signal is blocked not to switch the low side switch, the switching regulator switches only the high side switch with the pulse width modulation signal, the low side switch remains off, and a diode serially connected to the high side switch acts as a rectifier.

摘要翻译： 开关调节器可以以同步模式或异步模式工作。 当负载电流高于阈值时，开关稳压器用脉冲宽度调制信号切换一对串联的高侧和低压开关。 当负载电流低于阈值时，脉冲宽度调制信号被阻止而不切换低压侧开关，开关稳压器仅利用脉宽调制信号切换高侧开关，低侧开关保持关断， 串联连接到高侧开关的二极管充当整流器。

公开(公告)号：US07652536B2

公开(公告)日：2010-01-26

申请号：US12068774

申请日：2008-02-12

申请人： Hung-Der Su ,  Jing-Meng Liu ,  An-Tung Chen ,  Pao-Chuan Lin

发明人： Hung-Der Su ,  Jing-Meng Liu ,  An-Tung Chen ,  Pao-Chuan Lin

IPC分类号： H03F3/45 ,  H03F1/14

CPC分类号： H03F1/26 ,  H03F1/083 ,  H03F3/45197 ,  H03F2203/45356

摘要： An amplifier circuit with internal zeros provides a second pole in addition to a first pole and two zeros such that the second pole can prevent excessive gain at high frequency, so as to have high-frequency noise under control.

摘要翻译： 具有内部零点的放大器电路除了第一极点和第二极点之外还提供第二极点，使得第二极点可以在高频下防止过高的增益，从而具有控制的高频噪声。

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.