DCM Boost PFC for High Brightness LED Driver Applications
Tal Tayar,
Alexander Abramovitz,
Doron Shmilovitz
Affiliations
Tal Tayar
Department of Physical Electronics, School of Electrical Engineering, Faculty of Engineering, Tel-Aviv University, P.O. Box 39040, Tel Aviv-Yafo 69978, Israel
Alexander Abramovitz
Department of Electrical Engineering, Faculty of Engineering, Holon Institute of Technology, 52 Golomb St., Holon 5810201, Israel
Doron Shmilovitz
Department of Physical Electronics, School of Electrical Engineering, Faculty of Engineering, Tel-Aviv University, P.O. Box 39040, Tel Aviv-Yafo 69978, Israel
This paper is concerned with the derivation of a discontinuous conduction mode boost PFC rectifier as a driver for high-power LED lighting applications. The proposed driver is operated in the current mode regime while emulating a resistance towards the line, thus attaining a near unity power factor and low total harmonic distortion of the line current. Theoretical analysis is reported and conditions for the low LED flicker are derived. A method of design for minimum THD is also suggested. Simulation and experimental results are reported.
