Very high frequency resonant DC/DC converters for LED lighting
Very high frequency resonant DC/DC converters for LED lighting
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DOI：
10.1109/apec.2013.6520308
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发表时间：
2013-03
期刊：
影响因子：
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通讯作者：
Mickey Madsen;A. Knott;Michael A. E. Andersen
中科院分区：
文献类型：
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作者：
Mickey Madsen;A. Knott;Michael A. E. Andersen
本文介绍了一种用于LED照明的甚高频DC/DC变换器。几种谐振拓扑结构进行了比较，并讨论了它们的可用性。最后，基于可实现的功率密度和总物料清单来选择谐振SEPIC转换器。对一个输入40 V、输出15 V的51 MHz变频器进行了仿真。模拟显示，即使使用HEXFET功率MOSFET，也有可能实现高达87%的效率。三个原型的模拟转换器的实现与仿真显示出良好的相关性。原型的效率高达84%，功率密度高达8.9 W/cm 3（146 W/in 3）。
This paper presents a very high frequency DC/DC converter for LED lighting. Several resonant topologies are compared and their usability discussed. At the end the resonant SEPIC converter is chosen based on the achievable power density and total bill of material. Simulations of a 51 MHz converter with 40 V input and 15 V output are made. The simulation shows possibility of achieving efficiency up to 87 % even with a HEXFET Power MOSFET. Three prototypes of the simulated converter are implemented showing good correlation with simulations. The prototypes have efficiencies up to 84 % and power densities up to 8.9 W/cm3 (146 W/in3).