摘要
高亮度发光二极管(LED)是极具发展前景的新一代绿色照明光源,它具有效率高、寿命长和无污染等优点,但是作为储能电容的电解电容限制了LED驱动电源的使用寿命,阻碍了电源功率密度的进一步提高.结合Buck-Boost辅助电路,设计了一款新型的无电解电容的LED驱动器。利用新的拓扑电路结构去除电路中的电解电容,提高了LED驱动电源的使用寿命.最后利用数据仿真验证了理论分析的正确性.
High brightnes has the advantages of hig used as storage capacitor s light-emitting diode （LED） is a new generation of green lighting sourc h efficiency, long lifetime and no pollution and so on. The electrolytic limits the ser power density. Based on the auxiliary capacitor is designed. The electrolytic vice life of LED driving power an Buck-Boost circuit, a new LED capacitors in the circuit are remo es, which capacitor d hampers the improvement of the driver power without electrolytic ved based on new topology circuit structure, which improves the service life of the LED driving power. Finally, the correctness of the theoretical analysis is verified by simulation.
出处
《应用技术学报》
2017年第3期231-236,247,共7页
Journal of Technology
基金
四川省教育部春晖计划项目(22015113)资助
