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一种数字式LED驱动器的设计 被引量:1

The Development of Digital LED Driver
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摘要 研究基于LM2587-ADJ的数字升压恒流稳压LED高效驱动器。通过单片机以及D/A转换电路、控制电压调节回路、电流控制回路以及电流取样电路,可用于实际大功率LED驱动,可以实现对LED亮度的控制。该电路输入电压范围广,抗干扰性好,驱动效率高,保证了该驱动板在不同场合、不同区域内都能正常使用。 A new high constant current and vohage efficient LED light drive have been studied and produced based on digital boost voltage, regulator in LM2587 - ADJ chip. The constant current and voltage regulator can be used for the actual high-power LED driver because it realized the control voltage regulator circuit, the current control loop and a current sampling circuit by single chip microcomputer and a D/A conversion circuit. The LED brightness control can be achieved. The results show that: the input voltage range, good interference resistance, high drive efficiency, guarantee the drive plate on different occasions in different regions, can be used normally.
作者 刘凌
出处 《机电一体化》 2013年第5期85-88,共4页 Mechatronics
基金 西安市科技计划项目(编号CX12189WL12)
关键词 LED 恒流稳压 DC—DC变换器 LM2587-ADJ芯片 LED constant current regulators DC- DC converter LM2587- ADJ chip
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