A Low-Temperature Driving Scheme of EEFLs Inverter for LCD TV Backlights

초록

A new low-temperature driving method of EEFLs (External Electrode Fluorescent Lamps) inverter for LCD TV backlights is proposed. The proposed driving scheme achieves a zero current switching (ZCS) of lower switches and dramatically reduces the temperature of the transformer at which the power loss mainly occurs. Moreover, the capacitance of EEFLs is calculated by the QV Lissajous analysis method and then the optimal switching interval for a low heating loss of the transformer is determined. To investigate the feasibility of the proposed driving method, various experimental results using a prototype 17-inch LCD TV backlight with 12 EEFLs are presented(1).

키워드