公开(公告)号：US20110234122A1

公开(公告)日：2011-09-29

申请号：US13069283

申请日：2011-03-22

申请人： Bo Yu ,  Yuancheng Ren ,  Lei Du ,  Naixing Kuang ,  Zhishun Li

发明人： Bo Yu ,  Yuancheng Ren ,  Lei Du ,  Naixing Kuang ,  Zhishun Li

IPC分类号： H05B37/02

CPC分类号： H05B33/0827 ,  G09G3/3406

摘要： Circuitry and methods for driving a plurality of LED strings are disclosed herein. In one embodiment, the circuitry comprises a plurality of current regulating circuits electrically coupled to the LED strings and are configured to regulate a current flowing through the LED strings. At least two control circuits are coupled to the current regulating circuits and are configured to generate a control signal according to terminal voltages of the corresponding current regulating circuits. A voltage converter is electrically coupled to the LED strings and to the at least two control circuits, and is configured to regulate the DC driving voltage according to the at least two control signals.

摘要翻译： 本文公开了用于驱动多个LED串的电路和方法。 在一个实施例中，电路包括电耦合到LED串的多个电流调节电路，并且被配置为调节流过LED串的电流。 至少两个控制电路耦合到电流调节电路，并且被配置为根据相应的电流调节电路的端子电压产生控制信号。 电压转换器电耦合到LED串和至少两个控制电路，并且被配置为根据至少两个控制信号来调节DC驱动电压。

公开(公告)号：US08525423B2

公开(公告)日：2013-09-03

申请号：US13069283

申请日：2011-03-22

申请人： Bo Yu ,  Yuancheng Ren ,  Lei Du ,  Naixing Kuang ,  Zhishun Li

发明人： Bo Yu ,  Yuancheng Ren ,  Lei Du ,  Naixing Kuang ,  Zhishun Li

IPC分类号： H05B37/00

CPC分类号： H05B33/0827 ,  G09G3/3406

摘要： Circuitry and methods for driving a plurality of LED strings are disclosed herein. In one embodiment, the circuitry comprises a plurality of current regulating circuits electrically coupled to the LED strings and are configured to regulate a current flowing through the LED strings. At least two control circuits are coupled to the current regulating circuits and are configured to generate a control signal according to terminal voltages of the corresponding current regulating circuits. A voltage converter is electrically coupled to the LED strings and to the at least two control circuits, and is configured to regulate the DC driving voltage according to the at least two control signals.

摘要翻译： 本文公开了用于驱动多个LED串的电路和方法。 在一个实施例中，电路包括电耦合到LED串的多个电流调节电路，并且被配置为调节流过LED串的电流。 至少两个控制电路耦合到电流调节电路，并且被配置为根据相应的电流调节电路的端子电压产生控制信号。 电压转换器电耦合到LED串和至少两个控制电路，并且被配置为根据至少两个控制信号来调节DC驱动电压。