Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title A Study on the Operating Characters of the Piezoelectric Inverterto Drive EEFL for a Large Screen
Authors Hong-Sun Park ; Seung-Hak Yang ; Young-Cheol Lim ; Keun-Woo Han
Page pp.199-204
ISSN 1229-2214
Keywords multi-lamp; Piezoelectric transformer; EEFL; Piezoelectric Inverter
Abstract Cold cathode fluorescent lamps (CCFL) show complex characteristics, which make it difficult to drive them in parallel. In this paper, a multi-lamp driving scheme is proposed to drive multiple lamps for LCD back light to reduce output current unbalance. This propose system is composed of parallel CCFLs, series transformers. The driving system adopts only one backlight inverter to drive multi cold cathode fluorescent lamps (CCFL). Moreover the circuit introduces a multi-lamp driving transformer to reduce lamp-current imbalance. The validity of the proposed scheme is confirmed by the simulated and experimental results.