公开(公告)号：US20100302288A1

公开(公告)日：2010-12-02

申请号：US12787974

申请日：2010-05-26

申请人： Yuancheng Ren ,  Jiali Cai ,  Lei Du ,  Junming Zhang ,  Eric Yang

发明人： Yuancheng Ren ,  Jiali Cai ,  Lei Du ,  Junming Zhang ,  Eric Yang

IPC分类号： G09G5/10

CPC分类号： H05B41/2825

摘要： A dual ended driver circuit for a LCD backlight is disclosed. The circuit comprises a master board and a slave board, which provides a first output drive signal and a second output drive signal to either end of a lamp set, respectively. The circuit only uses one control chip to synchronize and make symmetrical the first output drive signal and the second output drive signal.

摘要翻译： 公开了一种用于LCD背光的双端驱动电路。 该电路包括主板和从属板，其分别向灯组的任一端提供第一输出驱动信号和第二输出驱动信号。 该电路仅使用一个控制芯片来同步和对准第一个输出驱动信号和第二个输出驱动信号。

公开(公告)号：US08373349B2

公开(公告)日：2013-02-12

申请号：US12764830

申请日：2010-04-21

申请人： Junming Zhang ,  Jiali Cai ,  Lei Du ,  Yuancheng Ren ,  Eric Yang

发明人： Junming Zhang ,  Jiali Cai ,  Lei Du ,  Yuancheng Ren ,  Eric Yang

IPC分类号： H05B41/16

CPC分类号： H05B41/282 ,  Y02B20/183

摘要： A circuit for controlling the switch frequency of an inverter that strikes and drives fluorescent lamps is disclosed. The circuit comprises a frequency generator and an offset circuit. The offset circuit provides a current signal in response to the lamp status. The frequency generator provides a frequency control signal in respond to the current signal so as to control the switch frequency of the inverter. When the lamp is open, the switch frequency of the inverter is higher; when the lamp is lighted, the switch frequency of the inverter is lower.

摘要翻译： 公开了一种用于控制触发和驱动荧光灯的逆变器的开关频率的电路。 电路包括频率发生器和偏移电路。 偏移电路响应于灯状态而提供电流信号。 频率发生器提供响应于当前信号的频率控制信号，以便控制逆变器的开关频率。 当灯泡打开时，变频器的开关频率较高; 当灯点亮时，变频器的开关频率较低。

公开(公告)号：US20100270937A1

公开(公告)日：2010-10-28

申请号：US12764830

申请日：2010-04-21

申请人： Junming Zhang ,  Jiali Cai ,  Lei Du ,  Yuancheng Ren ,  Eric Yang

发明人： Junming Zhang ,  Jiali Cai ,  Lei Du ,  Yuancheng Ren ,  Eric Yang

IPC分类号： H05B41/36

CPC分类号： H05B41/282 ,  Y02B20/183

摘要： A circuit for controlling the switch frequency of an inverter that strikes and drives fluorescent lamps is disclosed. The circuit comprises a frequency generator and an offset circuit. The offset circuit provides a current signal in response to the lamp status. The frequency generator provides a frequency control signal in respond to the current signal so as to control the switch frequency of the inverter. When the lamp is open, the switch frequency of the inverter is higher; when the lamp is lighted, the switch frequency of the inverter is lower.

摘要翻译： 公开了一种用于控制触发和驱动荧光灯的逆变器的开关频率的电路。 电路包括频率发生器和偏移电路。 偏移电路响应于灯状态而提供电流信号。 频率发生器提供响应于当前信号的频率控制信号，以便控制逆变器的开关频率。 当灯泡打开时，变频器的开关频率较高; 当灯点亮时，变频器的开关频率较低。

公开(公告)号：US08885362B2

公开(公告)日：2014-11-11

申请号：US13612401

申请日：2012-09-12

申请人： Naixing Kuang ,  Jiali Cai ,  Hongxia Yu

发明人： Naixing Kuang ,  Jiali Cai ,  Hongxia Yu

IPC分类号： H02M3/335

CPC分类号： H05B33/0815 ,  H02M1/36 ,  H02M3/33507 ,  H02M2001/0006 ,  Y02B20/346

摘要： A fast startup switching converter having a first switch, a second switch, a third switch, a first capacitor, and a controller controlling the ON and OFF switching of the second and third switches. The first terminal of the first switch is coupled to the input terminal of the switching converter, the second terminal is coupled to the first terminal of the second switch. The first terminal of the third switch is coupled to the second terminal of the first switch and the first terminal of the second switch. The first capacitor is coupled to the second terminal of the third switch and the controller to provide a power supply voltage for the controller. The switching converter charges the first capacitor through the first and third switches in a first working state, and transfers energy to a load through the first and second switches in a second working state.

摘要翻译： 一种具有第一开关，第二开关，第三开关，第一电容器和控制第二和第三开关的接通和断开的控制器的快速启动开关转换器。 第一开关的第一端子耦合到开关转换器的输入端子，第二端子耦合到第二开关的第一端子。 第三开关的第一端子耦合到第一开关的第二端子和第二开关的第一端子。 第一电容器耦合到第三开关的第二端子和控制器以为控制器提供电源电压。 开关转换器在第一工作状态下通过第一和第三开关对第一电容器充电，并且在第二工作状态下通过第一和第二开关将能量传递到负载。

公开(公告)号：US20120287682A1

公开(公告)日：2012-11-15

申请号：US13468706

申请日：2012-05-10

申请人： Yongliang Zhang ,  Xiaoyu Xi ,  Jiali Cai

发明人： Yongliang Zhang ,  Xiaoyu Xi ,  Jiali Cai

IPC分类号： H02M3/335

CPC分类号： H02M3/33507 ,  H05B33/0815 ,  Y02B20/341

摘要： In one embodiment, a switch mode power supply comprising a switch and a control circuit is disclosed. The control circuit may comprise a multi-function pin configured to receive a first current sampling signal and a first voltage sampling signal. A first comparing signal may be provided by comparing the first voltage sampling signal with a first threshold signal when the switch is turned OFF, and a second comparing signal may be provided by comparing the first current sampling signal with a second threshold signal when the switch is turned ON. The control circuit may be configured to control the switch in accordance with the first comparing signal and the second comparing signal.

摘要翻译： 在一个实施例中，公开了一种包括开关和控制电路的开关模式电源。 控制电路可以包括被配置为接收第一电流采样信号和第一电压采样信号的多功能引脚。 可以通过在开关断开时将第一电压采样信号与第一阈值信号进行比较来提供第一比较信号，并且可以通过将第一电流采样信号与第二阈值信号进行比较来提供第二比较信号，当开关为 打开。 控制电路可以被配置为根据第一比较信号和第二比较信号来控制开关。

公开(公告)号：US08901851B2

公开(公告)日：2014-12-02

申请号：US13399230

申请日：2012-02-17

申请人： Naixing Kuang ,  Jiali Cai ,  Hongxia Yu

发明人： Naixing Kuang ,  Jiali Cai ,  Hongxia Yu

IPC分类号： H05B37/00

CPC分类号： H05B33/0815 ,  H05B33/0851

摘要： The present invention provides a controller used in a TRIAC dimmer compatible LED driver and method thereof. The controller comprises a dimming signal generator, a dimming signal processor and a switch control circuit. The dimming signal generator receives an AC chopped voltage from a TRIAC dimmer and generates a dimming signal with regulated duty cycle in accordance with the AC chopped voltage. The dimming signal processor is coupled to the dimming signal generator and generates a processed dimming signal in accordance with the dimming signal. The duty cycle of the processed dimming signal is a sum of a predetermined duty cycle and the duty cycle of the dimming signal. Based on the processed dimming signal and a feedback signal indicative of the current flowing through LED, the switch control circuit generates a control signal to control at least one switch in a switching converter.

摘要翻译： 本发明提供了一种用于TRIAC调光器兼容LED驱动器的控制器及其方法。 控制器包括调光信号发生器，调光​​信号处理器和开关控制电路。 调光信号发生器从TRIAC调光器接收交流斩波电压，并根据交流斩波电压产生调节占空比的调光信号。 调光信号处理器耦合到调光信号发生器，并根据调光信号产生经处理的调光信号。 经处理的调光信号的占空比是预定占空比与调光信号的占空比之和。 基于经处理的调光信号和指示流过LED的电流的反馈信号，开关控制电路产生控制信号以控制开关转换器中的至少一个开关。

公开(公告)号：US08891258B2

公开(公告)日：2014-11-18

申请号：US13468706

申请日：2012-05-10

申请人： Yongliang Zhang ,  Xiaoyu Xi ,  Jiali Cai

发明人： Yongliang Zhang ,  Xiaoyu Xi ,  Jiali Cai

IPC分类号： H02M3/335 ,  H05B33/08

CPC分类号： H02M3/33507 ,  H05B33/0815 ,  Y02B20/341

摘要： In one embodiment, a switch mode power supply comprising a switch and a control circuit is disclosed. The control circuit may comprise a multi-function pin configured to receive a first current sampling signal and a first voltage sampling signal. A first comparing signal may be provided by comparing the first voltage sampling signal with a first threshold signal when the switch is turned OFF, and a second comparing signal may be provided by comparing the first current sampling signal with a second threshold signal when the switch is turned ON. The control circuit may be configured to control the switch in accordance with the first comparing signal and the second comparing signal.

摘要翻译： 在一个实施例中，公开了一种包括开关和控制电路的开关模式电源。 控制电路可以包括被配置为接收第一电流采样信号和第一电压采样信号的多功能引脚。 可以通过在开关断开时将第一电压采样信号与第一阈值信号进行比较来提供第一比较信号，并且可以通过将第一电流采样信号与第二阈值信号进行比较来提供第二比较信号，当开关为 打开。 控制电路可以被配置为根据第一比较信号和第二比较信号来控制开关。

公开(公告)号：US20130154487A1

公开(公告)日：2013-06-20

申请号：US13399230

申请日：2012-02-17

申请人： Naixing Kuang ,  Jiali Cai ,  Hongxia Yu

发明人： Naixing Kuang ,  Jiali Cai ,  Hongxia Yu

IPC分类号： H05B37/02

CPC分类号： H05B33/0815 ,  H05B33/0851

摘要： The present invention provides a controller used in a TRIAC dimmer compatible LED driver and method thereof. The controller comprises a dimming signal generator, a dimming signal processor and a switch control circuit. The dimming signal generator receives an AC chopped voltage from a TRIAC dimmer and generates a dimming signal with regulated duty cycle in accordance with the AC chopped voltage. The dimming signal processor is coupled to the dimming signal generator and generates a processed dimming signal in accordance with the dimming signal. The duty cycle of the processed dimming signal is a sum of a predetermined duty cycle and the duty cycle of the dimming signal. Based on the processed dimming signal and a feedback signal indicative of the current flowing through LED, the switch control circuit generates a control signal to control at least one switch in a switching converter.

摘要翻译： 本发明提供了一种用于TRIAC调光器兼容LED驱动器的控制器及其方法。 控制器包括调光信号发生器，调光​​信号处理器和开关控制电路。 调光信号发生器从TRIAC调光器接收交流斩波电压，并根据交流斩波电压产生调节占空比的调光信号。 调光信号处理器耦合到调光信号发生器，并根据调光信号产生经处理的调光信号。 经处理的调光信号的占空比是预定占空比与调光信号的占空比之和。 基于经处理的调光信号和指示流过LED的电流的反馈信号，开关控制电路产生控制信号以控制开关转换器中的至少一个开关。

公开(公告)号：US20130077353A1

公开(公告)日：2013-03-28

申请号：US13612401

申请日：2012-09-12

申请人： Naixing Kuang ,  Jiali Cai ,  Hongxia Yu

发明人： Naixing Kuang ,  Jiali Cai ,  Hongxia Yu

IPC分类号： H02M1/36

CPC分类号： H05B33/0815 ,  H02M1/36 ,  H02M3/33507 ,  H02M2001/0006 ,  Y02B20/346

摘要： A fast startup switching converter comprises a first switch, a second switch, a third switch, a first capacitor, and a controller controlling the ON and OFF switching of the second and third switches. The first terminal of the first switch is coupled to the input terminal of the switching converter, the second terminal is coupled to the first terminal of the second switch. The first terminal of the third switch is coupled to the second terminal of the first switch and the first terminal of the second switch. The first capacitor is coupled to the second terminal of the third switch and the controller to provide a power supply voltage for the controller. The switching converter charges the first capacitor through the first and third switches in a first working state, and transfers energy to a load through the first and second switches in a second working state.

摘要翻译： 快速启动开关转换器包括第一开关，第二开关，第三开关，第一电容器和控制第二和第三开关的导通和截止开关的控制器。 第一开关的第一端子耦合到开关转换器的输入端子，第二端子耦合到第二开关的第一端子。 第三开关的第一端子耦合到第一开关的第二端子和第二开关的第一端子。 第一电容器耦合到第三开关的第二端子和控制器以为控制器提供电源电压。 开关转换器在第一工作状态下通过第一和第三开关对第一电容器充电，并且在第二工作状态下通过第一和第二开关将能量传递到负载。