公开(公告)号：US08410711B2

公开(公告)日：2013-04-02

申请号：US13218755

申请日：2011-08-26

申请人： Yung Lin Lin ,  Sterling Du

发明人： Yung Lin Lin ,  Sterling Du

IPC分类号： H05B37/00

CPC分类号： H05B33/0815 ,  H05B33/0824

摘要： In one embodiment, a driving circuit includes an AC/DC converter which converts an AC voltage to a DC voltage and a DC/DC linear regulator which regulates a current through, e.g., an LED light source, according to a first current reference if a monitoring signal indicating the DC voltage is within a predetermined range, and regulates the current according to a second current reference less than the first current reference if the monitoring signal is beyond the predetermined range. In another embodiment, a controller controlling power to an LED light source turns on a first plurality of LEDs and turns off a second plurality of LEDs if a monitoring signal indicative of a DC voltage received by the LED light source is within a predetermined range, and turns on both first and second plurality of LEDs if the monitoring signal is beyond the predetermined range.

摘要翻译： 在一个实施例中，驱动电路包括将AC电压转换为DC电压的AC / DC转换器，以及DC / DC线性调节器，DC调节器通过例如LED光源来调节电流，根据第一电流参考，如果 指示DC电压的监视信号在预定范围内，并且如果监视信号超出预定范围，则根据小于第一电流参考值的第二电流基准来调节电流。 在另一个实施例中，如果指示由LED光源接收到的直流电压的监视信号在预定范围内，控制LED光源的控制器的控制器接通第一多个LED并且关闭第二多个LED，并且 如果监视信号超过预定范围，则打开第一和第二多个LED。

公开(公告)号：US08339067B2

公开(公告)日：2012-12-25

申请号：US13100434

申请日：2011-05-04

申请人： Yung Lin Lin ,  Ching Chuan Kuo ,  Tiesheng Yan ,  Xinhe Su

发明人： Yung Lin Lin ,  Ching Chuan Kuo ,  Tiesheng Yan ,  Xinhe Su

IPC分类号： H05B37/02

CPC分类号： H05B33/0845 ,  H05B33/0818 ,  Y02B20/348

摘要： A controller for controlling dimming of a light-emitting diode (LED) light source provides a pulse signal by comparing a sensing signal indicative of a current flowing through the LED light source to a reference signal. The controller controls the current through the LED light source according to the pulse signal during a first state of a pulse-width modulation signal and cutting off the current through the LED light source during a second state of the pulse-width modulation signal. The controller receives a dimming request signal indicative of an operation of a power switch coupled between an AC power source and a bridge rectifier and adjusts both a level of the reference signal and a duty cycle of the pulse-width modulation signal based on the dimming request signal.

摘要翻译： 用于控制发光二极管（LED）光源的调光的控制器通过将表示流过LED光源的电流的感测信号与参考信号进行比较来提供脉冲信号。 在脉冲宽度调制信号的第一状态期间，控制器根据脉冲信号控制通过LED光源的电流，并且在脉冲宽度调制信号的第二状态期间切断通过LED光源的电流。 控制器接收指示耦合在AC电源和桥式整流器之间的功率开关的操作的调光请求信号，并且基于调光请求调节参考信号的电平和脉宽调制信号的占空比 信号。

公开(公告)号：US08330388B2

公开(公告)日：2012-12-11

申请号：US12783260

申请日：2010-05-19

申请人： Ching-Chuan Kuo ,  Yung Lin Lin

发明人： Ching-Chuan Kuo ,  Yung Lin Lin

IPC分类号： H05B37/02

CPC分类号： H05B33/0851 ,  H05B33/0818 ,  H05B33/0848

摘要： A dimming controller for controlling power of a light source has a monitoring terminal, a dimming terminal, and a control terminal. The monitoring terminal is operable for receiving a current monitoring signal indicating a current flowing through the light source. The dimming terminal is operable for receiving a ramp signal. The voltage of the ramp signal increases if a power switch coupled between a power source and the light source is turned on. The control terminal is operable for providing a control signal to control a control switch coupled in series with the light source based on the current monitoring signal and the ramp signal. An average current of the light source increases as the ramp signal increases until the average current reaches a predetermined level.

摘要翻译： 用于控制光源功率的调光控制器具有监视终端，调光终端和控制终端。 监视终端可操作用于接收指示流过光源的电流的电流监视信号。 调光终端可操作以接收斜坡信号。 如果连接在电源和光源之间的电源开关导通，斜坡信号的电压就会增加。 控制端子可操作用于提供控制信号，以基于电流监视信号和斜坡信号来控制与光源串联耦合的控制开关。 随着斜坡信号的增加，光源的平均电流增加，直到平均电流达到预定的水平。

公开(公告)号：US08237371B2

公开(公告)日：2012-08-07

申请号：US12915807

申请日：2010-10-29

申请人： Yung Lin Lin ,  Ching-Chuan Kuo

发明人： Yung Lin Lin ,  Ching-Chuan Kuo

IPC分类号： H05B41/16

CPC分类号： H02M3/158 ,  H05B33/0815 ,  Y10T307/625

摘要： A differential driving circuit for powering a light source is disclosed. The differential driving circuit includes a first set of switches and a second set of switches. A first current from a power source flows through the first set of switches to charge a first energy storage element when the first set of switches are turned on. A second current from the first energy storage element flows through the second set of switches to power the light source when the second set of switches are turned on. The differential driving circuit further includes a second energy storage element coupled to the light source in parallel and for providing a differential voltage to the light source.

摘要翻译： 公开了一种用于为光源供电的差分驱动电路。 差分驱动电路包括第一组开关和第二组开关。 当第一组开关接通时，来自电源的第一电流流过第一组开关以对第一能量存储元件充电。 来自第一能量存储元件的第二电流流过第二组开关以在第二组开关接通时为光源供电。 差分驱动电路还包括并联耦合到光源并用于向光源提供差分电压的第二能量存储元件。

公开(公告)号：US20120112650A1

公开(公告)日：2012-05-10

申请号：US13323688

申请日：2011-12-12

申请人： Ching-Chuan KUO ,  Yung Lin LIN

发明人： Ching-Chuan KUO ,  Yung Lin LIN

IPC分类号： H05B37/02

CPC分类号： H05B33/0818 ,  H05B33/0857 ,  Y02B20/346

摘要： A controller for controlling dimming of a light-emitting diode (LED) light source includes a switch monitoring pin, a current monitoring pin, and a control pin. The switch monitoring pin monitors an operation of a power switch which transfers an AC voltage to a rectifier when the power switch is on. The current monitoring pin receives a current monitoring signal indicating a current flowing through the LED light source. The control pin generates a control signal to control a second switch coupled in series with the LED light source to adjust the brightness of the LED light source according to the operation of the power switch.

摘要翻译： 用于控制发光二极管（LED）光源调光的控制器包括开关监控引脚，电流监控引脚和控制引脚。 开关监控引脚监视电源开关的操作，当电源开关接通时，电源开关将AC电压传输到整流器。 电流监视引脚接收指示流经LED光源的电流的电流监视信号。 控制引脚产生控制信号以控制与LED光源串联耦合的第二开关，以根据电源开关的操作调节LED光源的亮度。

公开(公告)号：US08148910B2

公开(公告)日：2012-04-03

申请号：US12915807

申请日：2010-10-29

申请人： Yung Lin Lin ,  Ching-Chuan Kuo

发明人： Yung Lin Lin ,  Ching-Chuan Kuo

IPC分类号： H05B41/16

摘要： A differential driving circuit for powering a light source is disclosed. The differential driving circuit includes a first set of switches and a second set of switches. A first current from a power source flows through the first set of switches to charge a first energy storage element when the first set of switches are turned on. A second current from the first energy storage element flows through the second set of switches to power the light source when the second set of switches are turned on. The differential driving circuit further includes a second energy storage element coupled to the light source in parallel and for providing a differential voltage to the light source.

公开(公告)号：US20110221795A1

公开(公告)日：2011-09-15

申请号：US13094384

申请日：2011-04-26

申请人： Kaiping Ran ,  Da Liu ,  Yung Lin Lin

发明人： Kaiping Ran ,  Da Liu ,  Yung Lin Lin

IPC分类号： G09G5/10 ,  H05B37/03

CPC分类号： H05B33/0851 ,  G09G3/3406 ,  G09G2310/08 ,  G09G2320/0247 ,  G09G2320/0633 ,  G09G2320/064 ,  G09G2330/06 ,  H05B33/0818 ,  H05B33/0827 ,  Y02B20/346

摘要： A backlight controller for driving multiple light emitting diode (LED) strings includes feedback circuitry, phase array circuitry, and encoder circuitry. The feedback circuitry generates multiple feedback signals indicative of currents flowing through the LED strings respectively. The encoder circuitry generates a code signal indicative of a total number of operative LED strings among the multiple LED strings based on the feedback signals. The phase array circuitry generates multiple saw tooth signals according to the code signal. A phase shift amount between two adjacent signals of the saw tooth signals is determined by the total number of the operative LED strings. The phase array circuitry compares each of the saw tooth signals with a dimming control signal to generate multiple phase shift signals so as to respectively control the operative LED strings.

摘要翻译： 用于驱动多个发光二极管（LED）串的背光控制器包括反馈电路，相位阵列电路和编码器电路。 反馈电路分别产生指示流过LED串的电流的多个反馈信号。 编码器电路基于反馈信号产生指示多个LED串中的操作LED串的总数的代码信号。 相位阵列电路根据码信号产生多个锯齿信号。 锯齿信号的两个相邻信号之间的相移量由可操作的LED串的总数确定。 相位阵列电路将每个锯齿信号与调光控制信号进行比较，以产生多个相移信号，以分别控制工作LED串。

公开(公告)号：US20110221346A1

公开(公告)日：2011-09-15

申请号：US13096646

申请日：2011-04-28

申请人： Sheng Tai LEE ,  Yung Lin LIN ,  Chuan Chiung KUO

发明人： Sheng Tai LEE ,  Yung Lin LIN ,  Chuan Chiung KUO

IPC分类号： H05B37/02

CPC分类号： H05B33/0812 ,  Y02B20/345 ,  Y02B20/348

摘要： Embodiments in accordance with the present invention provide circuits and methods for driving light sources, e.g., a light-emitting diode (LED) light source. In one embodiment, a printed circuit board (PCB) includes a bridge rectifier rectifying an AC voltage to a rectified AC voltage, an LED light source, and a first switch coupled to the LED light source in series controlling a current through the LED light source according to a predetermined current reference. The LED light source and the first switch coupled in series receive the rectified AC voltage while the first switch is controlled linearly.

摘要翻译： 根据本发明的实施例提供了用于驱动光源的电路和方法，例如发光二极管（LED）光源。 在一个实施例中，印刷电路板（PCB）包括将AC电压整流到整流的AC电压的桥式整流器，LED光源和耦合到LED光源的第一开关，其串联地控制通过LED光源的电流 根据预定的电流参考。 LED光源和串联耦合的第一开关在第一开关线性控制的同时接收整流的交流电压。

公开(公告)号：US20110181199A1

公开(公告)日：2011-07-28

申请号：US13042349

申请日：2011-03-07

申请人： Yung Lin LIN ,  Ching Chuan KUO

发明人： Yung Lin LIN ,  Ching Chuan KUO

IPC分类号： H05B37/02

CPC分类号： H05B33/0818 ,  H05B33/0851 ,  Y02B20/346

摘要： A controller for controlling dimming of an LED light source includes a control terminal and dimming control circuitry coupled to the control terminal. The control terminal provides a driving signal to control a control switch coupled to the LED light source, thereby controlling the dimming of the LED light source. The dimming control circuitry generates the driving signal according to a set of operations of a power switch that transfers an AC signal. The dimming control circuitry further adjusts the driving signal by counting multiple waves of the AC signal to control the dimming of the LED light source.

摘要翻译： 用于控制LED光源的调光的控制器包括耦合到控制端的控制端和调光控制电路。 控制端子提供驱动信号以控制耦合到LED光源的控制开关，从而控制LED光源的调光。 调光控制电路根据传送AC信号的电源开关的一组操作产生驱动信号。 调光控制电路通过对交流信号的多个波进行计数来调节驱动信号，以控制LED光源的调光。

公开(公告)号：US20110109245A1

公开(公告)日：2011-05-12

申请号：US12968035

申请日：2010-12-14

申请人： Yung Lin LIN ,  Sterling DU

发明人： Yung Lin LIN ,  Sterling DU

IPC分类号： H05B37/02

CPC分类号： H05B33/0815 ,  H05B33/0824

摘要： In one embodiment, a driving circuit includes an AC/DC converter which converts an AC voltage to a DC voltage and a DC/DC linear regulator which regulates a current through, e.g., an LED light source, according to a first current reference if a monitoring signal indicating the DC voltage is within a predetermined range, and regulates the current according to a second current reference less than the first current reference if the monitoring signal is beyond the predetermined range. In another embodiment, a controller controlling power to an LED light source turns on a first plurality of LEDs and turns off a second plurality of LEDs if a monitoring signal indicative of a DC voltage received by the LED light source is within a predetermined range, and turns on both first and second plurality of LEDs if the monitoring signal is beyond the predetermined range.

摘要翻译： 在一个实施例中，驱动电路包括将AC电压转换为DC电压的AC / DC转换器，以及DC / DC线性调节器，DC调节器通过例如LED光源来调节电流，根据第一电流参考，如果 指示DC电压的监视信号在预定范围内，并且如果监视信号超出预定范围，则根据小于第一电流参考值的第二电流基准来调节电流。 在另一个实施例中，如果指示由LED光源接收到的直流电压的监视信号在预定范围内，控制LED光源的控制器的控制器接通第一多个LED并且关闭第二多个LED，并且 如果监视信号超过预定范围，则打开第一和第二多个LED。