基于HV9910的LED驱动电路设计

通过对LED发光原理分析,了解驱动电路的基本要求,以HV9910作为控制芯片,设计一种高效节能的LED驱动电路。设计基于该芯片的电路方案,通过理论计算,确定各元器件选型,最后对驱动电路进行通电测试。测试结果表明:在电压波动及负载变化的情况下,驱动电路的负载端电流基本保持稳定;驱动电路能够为LED工作提供一个稳定电流,电路结构简单,设计合理,可靠性高,基本满足要求。

A Design of LED Drive Circuit Based on HV9910

Based on an analysis of the principle of LED luminosity, and an understanding of the the basic requirements of the drive circuit, a highly-efficient and energy-saving LED driving circuit has been proposed with HV9910 as its control chip. With its design based on the circuit scheme of the chip, the components selection is to be determined through a theoretical calculation, followed by a power-on test of the drive circuit. The test results show that under the condition of voltage fluctuation and load change, the load current of the drive circuit is basically stable, guaranteeing a stable work current for the LED operation, and thus meeting the basic requirements with its simple circuit structure, professional design, and high reliability in the newly designed driving circuit.