RT Journal Article
A1 P.D. Teodosescu
AD Research Laboratory and Sustainable Development in Electronics and Power Electronics, Technical University of Cluj-Napoca, Cluj Napoca, Romania
A1 M. Bojan
AD Research Laboratory and Sustainable Development in Electronics and Power Electronics, Technical University of Cluj-Napoca, Cluj Napoca, Romania
A1 R. Marschalko
AD Research Laboratory and Sustainable Development in Electronics and Power Electronics, Technical University of Cluj-Napoca, Cluj Napoca, Romania

PB iet
T1 Resonant LED driver with inherent constant current and power factor correction
JN Electronics Letters
VO 50
IS 15
SP 1086
OP 1088
AB A drive converter for light emitting diodes is presented, which is able to add the constant current operation mode and power factor correction without any control feedback or special control algorithm while obtaining very good performances regarding high efficiency, good reliability and most importantly, low cost. The converter is based on a half bridge resonant topology, controlled with a discrete self-oscillating drive circuit, with an output parallel resonant tank. The working principle is based on the inherent current source behaviour of these kinds of converters, allowing a high power factor and low harmonic distortions. One topology uses no electrolytic high or low voltage filtering capacitors, thus obtaining a longer working lifetime for the driver. In addition, a second topology with output non-electrolytic condenser filtering for higher performances in dimming applications is proposed.
K1 power factor correction
K1 output parallel resonant tank
K1 inherent constant current
K1 discrete self-oscillating drive circuit
K1 drive converter
K1 resonant LED driver
K1 light emitting diodes
K1 half bridge resonant topology
DO https://doi.org/10.1049/el.2014.1701
UL https://digital-library.theiet.org/;jsessionid=krvcums0pih6.x-iet-live-01content/journals/10.1049/el.2014.1701
LA English
SN 0013-5194
YR 2014
OL EN