A Resonant LED Driver with Capacitive Power Transfer Conference Paper

abstract

• A quasi resonant topology suitable for LED drivers, featuring power factor correction and dimming in a single stage is presented. It contains a single active switch, and operates in zero-voltage-switching, zero-current-switching. This topology includes neither electrolytic capacitors nor transformer, and provides galvanic isolation between the AC mains and the DC side. Building on this new topology, a 15 W, 30 V, LED string driver with a typical operation frequency of 200 kHz was designed and experimented. Experimental results fully support the theoretical analysis and the simulation results. Measured efficiency exceeds 90% in the entire operation range and reached a peak efficiency of 96%. The driver is dimmable through the switching frequency. Dimming in the range of 4W-19W is demonstrated experimentally. 2014 IEEE.

name of conference

• 2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014

authors

• Ehsani, Mehrdad

published proceedings

• 2014 TWENTY-NINTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC)

author list (cited authors)

• Shmilovitz, D., Ozeri, S., & Ehsani, M. M.

citation count

• 11

complete list of authors

• Shmilovitz, Doron||Ozeri, Shaul||Ehsani, Mehrdad Mark

publication date

• March 2014

publisher

• Institute of Electrical and Electronics Engineers (IEEE)  Publisher

published in

• n1048-2334ISSN  Journal

Digital Object Identifier (DOI)

• 10.1109/apec.2014.6803487

International Standard Book Number (ISBN) 13

• 9781479923250

start page

• 1384

end page

• +

URL

• http%3A%2F%2Fdx.doi.org%2F10.1109%2Fapec.2014.6803487