A Passive Integration Unit for Electronic Ballast with Multiresonant Converter

High frequency multiresonant electronic ballasts have been widely used into fluorescent lamps because it can obviously prolong the life of fluorescent lamps. In this paper, a passive integrated passive unit with the flexible multi-layer foil (FMLF) integration technique is proposed to improve the power density of the high frequency multiresonant electronic ballast. Furthermore, the construction, flux analysis and parameter design of the integrated unit are demonstrated in detail. Finally, a simulation model based on Maxwell/Ansoft and a prototype for a 68W-23.5kHz multiresonant converter electronic ballast are established to verify the feasibility of the proposed idea.