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.

fYear

2006

fDate

Aug. 30 2006-Sept. 1 2006

Firstpage

38

Lastpage

43

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Motion Control Conference, 2006. EPE-PEMC 2006. 12th International

Conference_Location

Portoroz

Print_ISBN

1-4244-0121-6

Type

conf

DOI

10.1109/EPEPEMC.2006.4778372

Filename

4778372