1～5W MR16 LED驱动参考方案.pdf

TND373/D Rev. 0, Oct -- 2009 1 W to 5 W LED Driver for MR16 LED Reference Design Documentation Package Disclaimer: ON Semiconductor is providing this reference design documentation package “AS IS” and the recipient assumes all risk associated with the use and/or commercialization of this design package. No licenses to ON Semiconductor’s or any third party’s Intellectual Property is conveyed by the transfer of this documentation. This reference design documentationpackage isprovided onlyto assistthe customersin evaluationand feasibilityassessment of the reference design. It is expected that users may make further refinements to meet specific performance goals. 2 TND373/D TND373/D 1 W to 5 W LED Driver for MR16 LED Introduction TECHNICAL NOTE The market for High--Brightness LED’s (HB--LED) boost topologies. Once understood, the buck--boost continues to rise rapidly. Over the last few years LED topology can offer many advantages for cost effective HB efficacy (lm/W) has more than doubled while flux per LED lighting when V overlaps V . in f package continues to rise rapidly making them more useful Overview for many new applications. We have seen revolutionary new products in handheld flashl