A single-stage LED driver usually produces a significant twice line frequency ripple current when a high power factor is achieved. The ripple current further produces a flicker through LEDs. In this paper, an energy channeling single-stage LED driver is proposed to achieve flicker-free LED driving while maintaining high power factor correction. It also achieves true single stage power conversion and low component cost. A 8.5W, 50V/0.17A Buck-Boost experimental prototype has been built and tested to verify the proposed method.
|Original language||English (US)|
|Number of pages||6|
|State||Published - May 8 2015|
|Event||30th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2015 - Charlotte, United States|
Duration: Mar 15 2015 → Mar 19 2015
|Other||30th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2015|
|Period||3/15/15 → 3/19/15|