公开(公告)号：US20140217921A1

公开(公告)日：2014-08-07

申请号：US13914667

申请日：2013-06-11

Applicant: RICHTEK TECHNOLOGY CORP.

Inventor： Shei Chie Yang ,  Shui Mu Lin ,  Shih Chung Wang

IPC: H05B33/08

CPC classification number: H05B33/0845 ,  H05B33/0848

Abstract: A linearly dimming circuit of a light-emitting device, includes a diming signal processing unit, having a dimming signal input terminal and a current setting output terminal, wherein the dimming signal input terminal receives a luminance percentage setting to set a luminance of the light-emitting device to be a maximal luminance multiplying the luminance percentage setting, the dimming signal processing unit generates a current percentage setting according to the luminance percentage setting, the current setting output terminal outputs a driving current setting which sets the driving current to be a maximal driving current multiplying the current percentage setting; a light-emitting device driver stage, having a current setting input terminal and a driving current output terminal, wherein the current setting input terminal couples to the current setting output terminal and receives the driving current setting, the driving current output terminal outputs the driving current to the light-emitting device.

Abstract translation: 发光装置的线性调光电路包括具有调光信号输入端子和电流设定输出端子的调光信号处理单元，其中调光信号输入端子接收亮度百分比设定以设定发光装置的亮度， 发光装置为与亮度百分比设定相乘的最大亮度，调光信号处理单元根据亮度百分比设定生成电流百分比设定，当前设定输出端子输出将驱动电流设定为最大驱动的驱动电流设定 当前乘以当前百分比设置; 具有电流设定输入端子和驱动电流输出端子的发光装置驱动级，其中电流设定输入端子耦合到电流设定输出端子并接收驱动电流设定，驱动电流输出端子输出驱动电流 到发光装置。