Title :
Quasi-resonant LED driver with capacitive isolation
Author :
Abramovitz, A. ; Reichman, I. ; Shmilovitz, D.
Author_Institution :
Sch. of Electr. Eng., Tel-Aviv Univ., Tel-Aviv, Israel
Abstract :
A low part count, efficient quasi-resonant light-emitting diode driver is proposed. The proposed driver relies on a capacitive safety isolation barrier, which eliminates the need for a bulky isolation transformer; thus, the footprint area can be reduced. Operation frequencies of 100-350 kHz further contribute to miniaturisation of the proposed driver. The feasibility of the proposed topology is verified by simulation and experimental results.
Keywords :
driver circuits; light emitting diodes; power transformers; resonant power convertors; bulky isolation transformer; capacitive isolation; capacitive safety isolation barrier; footprint area; frequency 100 kHz to 350 kHz; quasiresonant LED driver; quasiresonant light-emitting diode driver;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2014.2645
