an-1073| Application Note
Application Note AN-1073
Analysis of Different Solutions and Trade-off Cost vs. Power Factor Performance for Electronic Ballasts
By Cecilia Contenti
Table of Contents
Page I. Introduction II. Low Power Factor Configuration.................................................................2 III. High Power Factor Configuration ...............................................................3 IV. Low Cost Power Factor Methods...............................................................3 V. Passive Valley Fill Configuration ................................................................3 VI. Boosted Bus Voltage Regulation ...............................................................4 VII. Conclusions ..............................................................................................9
The IR2520D is a very versatile and flexible building block to design the typical functions of electronic ballast in a cheap and easy way. In this paper three different circuits have been discussed: low PF ballast is low end low cost, low cost PFC ballast is medium end medium cost and active PFC ballast is high-end higher cost. The right solution can be chosen based on a trade-off between performance needs (PF, Crest Factor and THD requirements) and cost requirements.
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