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1. 发明申请

US20130147382A1 LED DRIVER APPARATUS 有权
标题翻译： LED驱动装置
公开(公告)号：US20130147382A1
公开(公告)日：2013-06-13
申请号：US13693570
申请日：2012-12-04
申请人： Wan-jik Lee , Ji-won Choi , Chang-sik Lim
发明人： Wan-jik Lee , Ji-won Choi , Chang-sik Lim
IPC分类号： H05B37/02
CPC分类号： H05B37/02 , G09G3/3406 , H05B33/0815 , H05B33/0848 , H05B33/0887
摘要： A light emitting diode (LED) driver apparatus is provided. The LED driver apparatus includes an input unit, a PWM signal generation unit, a DC-DC converter, an LED driving unit, and a synchronization unit. The input unit is configured to receive a dimming signal. The PWM signal generation unit is configured to generate a PWM signal using an oscillator having a preset frequency. The DC-DC converter is configured to provide a driving voltage to an LED array using the generated PWM signal. The LED driving unit is configured to drive the LED array using the received dimming signal. The synchronization unit is configured to reset the oscillator based on a driving state of the LED array.
摘要翻译：提供了一种发光二极管（LED）驱动器装置。 LED驱动器装置包括输入单元，PWM信号生成单元，DC-DC转换器，LED驱动单元和同步单元。输入单元被配置为接收调光信号。 PWM信号生成单元被配置为使用具有预设频率的振荡器来产生PWM信号。 DC-DC转换器被配置为使用所生成的PWM信号向LED阵列提供驱动电压。 LED驱动单元被配置为使用所接收的调光信号来驱动LED阵列。同步单元被配置为基于LED阵列的驱动状态来重置振荡器。

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