公开(公告)号：US08120280B2

公开(公告)日：2012-02-21

申请号：US12856795

申请日：2010-08-16

申请人： Xinmin Yi ,  Ching-Chuan Kuo ,  Jianping Wang ,  Feng Shi

发明人： Xinmin Yi ,  Ching-Chuan Kuo ,  Jianping Wang ,  Feng Shi

IPC分类号： G05F1/00

CPC分类号： H05B33/0854

摘要： A driving circuit for controlling a light source includes a frequency controller and a switch module. The frequency controller is operable for receiving a first dimming signal for controlling the light source to achieve a predetermined brightness, and for generating a second dimming signal having a frequency out of one or more predetermined ranges according to the first dimming signal when the frequency of the first dimming signal is within the predetermined ranges. The switch module coupled to the frequency controller is operable for switching on and off alternately to achieve the predetermined brightness of the light source according to the second dimming signal when the frequency of the first dimming signal is within the predetermined ranges and according to the first dimming signal when the frequency of the first dimming signal is out of the predetermined ranges.

摘要翻译： 用于控制光源的驱动电路包括频率控制器和开关模块。 频率控制器可操作用于接收用于控制光源以实现预定亮度的第一调光信号，并且用于根据第一调光信号产生具有根据第一调光信号的一个或多个预定范围的频率的第二调光信号， 第一调光信号在预定范围内。 耦合到频率控制器的开关模块可操作用于当第一调光信号的频率在预定范围内且根据第一调光时交替地接通和断开以根据第二调光信号实现光源的预定亮度 当第一调光信号的频率超出预定范围时，发出信号。

公开(公告)号：US20120243269A1

公开(公告)日：2012-09-27

申请号：US13443786

申请日：2012-04-10

申请人： Zhimou REN ,  Ching-Chuan KUO ,  Jianlong GAO ,  Xinmin YI ,  Yunning XIE

发明人： Zhimou REN ,  Ching-Chuan KUO ,  Jianlong GAO ,  Xinmin YI ,  Yunning XIE

IPC分类号： H02M3/335

CPC分类号： H02M3/33507

摘要： A circuit includes a transformer and a controller. The transformer includes a primary winding and a secondary winding, and operates in multiple switching cycles. A switching cycle includes a charging period and a discharging period. During the charging period, the transformer is powered by the input voltage and a current flowing through the primary winding increases. During the discharging period the transformer discharges to power the load and a current flowing through the secondary winding decreases. The controller includes a pin that receives a first feedback signal indicating the input voltage during the charging period and receives a second feedback signal indicating an electrical condition of the secondary winding during the discharging period. The controller generates a first control signal and a second control signal to regulate the input voltage and an output current flowing through the load, respectively.

摘要翻译： 电路包括变压器和控制器。 变压器包括初级绕组和次级绕组，并在多个开关周期中工作。 开关周期包括充电期间和放电期间。 在充电期间，变压器由输入电压供电，流过初级绕组的电流增加。 在放电期间，变压器放电给负载供电，流过次级绕组的电流减小。 控制器包括一个引脚，该引脚在充电期间接收指示输入电压的第一反馈信号，并且在放电期间接收指示次级绕组电气状态的第二反馈信号。 控制器产生第一控制信号和第二控制信号，以分别调节输入电压和流过负载的输出电流。

公开(公告)号：US08811045B2

公开(公告)日：2014-08-19

申请号：US13443786

申请日：2012-04-10

申请人： Zhimou Ren ,  Ching-Chuan Kuo ,  Jianlong Gao ,  Xinmin Yi ,  Yunning Xie

发明人： Zhimou Ren ,  Ching-Chuan Kuo ,  Jianlong Gao ,  Xinmin Yi ,  Yunning Xie

IPC分类号： H02M3/335

CPC分类号： H02M3/33507

摘要： A circuit includes a transformer and a controller. The transformer includes a primary winding and a secondary winding, and operates in multiple switching cycles. A switching cycle includes a charging period and a discharging period. During the charging period, the transformer is powered by the input voltage and a current flowing through the primary winding increases. During the discharging period the transformer discharges to power the load and a current flowing through the secondary winding decreases. The controller includes a pin that receives a first feedback signal indicating the input voltage during the charging period and receives a second feedback signal indicating an electrical condition of the secondary winding during the discharging period. The controller generates a first control signal and a second control signal to regulate the input voltage and an output current flowing through the load, respectively.

摘要翻译： 电路包括变压器和控制器。 变压器包括初级绕组和次级绕组，并在多个开关周期中工作。 开关周期包括充电期间和放电期间。 在充电期间，变压器由输入电压供电，流过初级绕组的电流增加。 在放电期间，变压器放电给负载供电，流过次级绕组的电流减小。 控制器包括一个引脚，该引脚在充电期间接收指示输入电压的第一反馈信号，并且在放电期间接收指示次级绕组电气状态的第二反馈信号。 控制器产生第一控制信号和第二控制信号，以分别调节输入电压和流过负载的输出电流。

公开(公告)号：US20110140621A1

公开(公告)日：2011-06-16

申请号：US12856795

申请日：2010-08-16

申请人： Xinmin YI ,  Ching-Chuan KUO ,  Jianping WANG ,  Feng SHI

发明人： Xinmin YI ,  Ching-Chuan KUO ,  Jianping WANG ,  Feng SHI

IPC分类号： H05B37/02

CPC分类号： H05B33/0854

摘要： A driving circuit for controlling a light source includes a frequency controller and a switch module. The frequency controller is operable for receiving a first dimming signal for controlling the light source to achieve a predetermined brightness, and for generating a second dimming signal having a frequency out of one or more predetermined ranges according to the first dimming signal when the frequency of the first dimming signal is within the predetermined ranges. The switch module coupled to the frequency controller is operable for switching on and off alternately to achieve the predetermined brightness of the light source according to the second dimming signal when the frequency of the first dimming signal is within the predetermined ranges and according to the first dimming signal when the frequency of the first dimming signal is out of the predetermined ranges.

摘要翻译： 用于控制光源的驱动电路包括频率控制器和开关模块。 频率控制器可操作用于接收用于控制光源以实现预定亮度的第一调光信号，并且用于根据第一调光信号产生具有根据第一调光信号的一个或多个预定范围的频率的第二调光信号， 第一调光信号在预定范围内。 耦合到频率控制器的开关模块可操作用于当第一调光信号的频率在预定范围内且根据第一调光时交替地接通和断开以根据第二调光信号实现光源的预定亮度 当第一调光信号的频率超出预定范围时，发出信号。