Title :
Optimized Design of Power Semiconductor Devices for DC-AC Royer Converter Topology in Case of CCFL Lighting Applications
Author :
Chimento, Filippo ; Musumeci, S. ; Raciti, Angelo ; Tomarchio, S.
Author_Institution :
DIEES-ARIEL, Catania Univ.
fDate :
Aug. 30 2006-Sept. 1 2006
Abstract :
The cold cathode fluorescent lamps are particularly used in back lighting of LCD monitors. The supplying circuits must have the characteristic of good thermal management in order to avoid temperature rise over 60 degC, which can cause large dark spots in the screen. In this paper an innovative solution is proposed that consists on a Royer configuration of a current-fed push-pull inverter supplied by a buck DC-DC converter. The main characteristics of this configuration are zero voltage switching operations, which minimize both the power consumption and the thermal dissipation, and the good suitability for system integration, which allows to consider package-targeted economic solutions
Keywords :
DC-AC power convertors; DC-DC power convertors; fluorescent lamps; invertors; power consumption; power semiconductor devices; thermal management (packaging); zero voltage switching; CCFL lighting applications; DC-AC Royer converter; LCD monitors; back lighting; buck DC-DC converter; cold cathode fluorescent lamps; current-fed push-pull inverter; dark spots; power consumption; power semiconductor devices; temperature rise; thermal dissipation; thermal management; zero voltage switching; Cathodes; Circuit topology; Computer displays; Current supplies; Design optimization; Fluorescent lamps; Inverters; Power semiconductor devices; Temperature; Thermal management;
Conference_Titel :
Power Electronics and Motion Control Conference, 2006. EPE-PEMC 2006. 12th International
Conference_Location :
Portoroz
Print_ISBN :
1-4244-0121-6
DOI :
10.1109/EPEPEMC.2006.4778372
