公开(公告)号：US20140184102A1

公开(公告)日：2014-07-03

申请号：US13731385

申请日：2012-12-31

Applicant: I SHOU UNIVERSITY

Inventor： Hung-Liang CHENG ,  Chao-Shun CHEN ,  Guan-Long HUANG

IPC: H05B37/02

CPC classification number: H05B37/02 ,  H05B33/0815 ,  H05B33/0827 ,  Y02B20/348

Abstract: An LED driving device includes a DC to DC converter module and a driving module. The DC to DC converter module includes a full-bridge switching circuit for converting a first DC electric power into an AC electric power, a rectifier circuit for converting the AC electric power into a second DC electric power, and a control circuit for modulating pulse phase of the second DC electric power and for controlling switching operation of the full-bridge switching circuit, such that the second DC electric power has a predetermined voltage value. The driving module is operable to receive the second DC electric power, to output a third DC electric power with a predetermined current value for driving an LED module, and to modulate pulse width of the third DC electric power.

Abstract translation: LED驱动装置包括DC-DC转换器模块和驱动模块。 DC-DC转换器模块包括用于将第一直流电转换为交流电的全桥开关电路，将交流电转换为第二直流电的整流电路，以及用于调制脉冲相位的控制电路 并且用于控制全桥开关电路的开关操作，使得第二DC电力具有预定的电压值。 驱动模块可操作以接收第二DC电力，输出具有用于驱动LED模块的预定电流值的第三DC电力，并调制第三DC电力的脉冲宽度。