摘要
当前,半导体照明技术发展迅速,作为半导体照明技术核心产品的发光二极管(LED)光源已对照明领域产生了深刻的影响。LED光源的实际应用导致对LED驱动器有很多非常具体的性能要求。针对开发LED驱动器需要提高电路的转换效率和可靠性的实际需要,选择高效率的Buck-Boost电路做为LED驱动器的主电路,提出并实现了内部核心开关电源芯片MC33167的开发,并就该芯片的原理、结构特点和一些实施要点进行讨论,给出LED驱动器主控电路以及LED驱动器智能控制电路,并利用控制理论对LED驱动器的稳定性进行分析。最后通过分析测试结果,展示了利用开关电源芯片MC33167实现大功率LED驱动器的可行性和可靠性。
As the fast development of the semiconductor, light emitting diode （LED） power has a deep affection on the lighting area.The actual application of LED power leads to a plenty of characteristic requirements.Considering the requirements of developing the power-driver of LED, a new efficient switch power chip MC33167 for LED power driver is proposed and implemented.The Buck-Boost circuit is choosed as the main cirouit of LED driver.The design princi- ple,structure characteristics and some key points of the implementation of MC33167 are discussed.LED drive control circuit and intelligent control are given.Then the stability of LED power drive is anylazed based on the control theory. The test results shows that high-power LED driver using the switch power chip MC33167 is feasible and reliable.
出处
《电力电子技术》
CSCD
北大核心
2012年第4期21-23,共3页
Power Electronics
基金
上海市科学技术委员会资助(06dz22105)~~
关键词
驱动器
发光二极管开关电源
闭环
power driver
light emitting diode switch power
closed-loop
