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Comparison of Two Flyback-Based Integrated Converters for the Implementation of LFSW Electronic Ballasts

Marchesan, Tiago B. Marchesan ; Perdigão, M. ; Costa, Marco A. Dalla Costa

Comparison of Two Flyback-Based Integrated Converters for the Implementation of LFSW Electronic Ballasts, Proc IEEE Industry Application Society Annual Meeting, Nova Orleães, United States, Vol. CD, pp. CD - CD, September, 2007.

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Abstract
This paper presents a simple configuration, based on the integration of two Flyback converters, to supply
high intensity discharge (HID) lamps with a low frequency square waveform (LFSW), in order to avoid
the occurrence of the acoustic resonance (AR) phenomenon. The proposed topology is compared to a
previous presented one. Both topologies integrate two Flyback converters in different ways. Losses of both
integration modes are compared and advantages are discussed in respect to current and voltage
components stress. The proposed electronic ballast presents a high efficiency with a reduced number of
components and no over current stress in the shared switch. Experimental results validate the proposed
configuration.