Self-adapting zero voltage switching electron ballast

Published:2011/4/23 3:37:00 Author:May | Keyword: self-adapting, zero voltage, switching, electron ballast | From:SeekIC

The principle diagram of self-adapting zero voltage switching electron ballast IR2520 is mainly used for driving fluorescent lamp with power under 40W. The rated power of the lamp is different. The parameters of components such as Q1, Q2, L2, C7, etc have several differences. For example, when rated power of lighting tube is in the range of 16-28W, Q1 and Q2 should choose MOSFET which is 500V, 2A, such as (IRFC420, etc), the induction value of L2 is about 1.8mH and 3.5mH, the capacity of C7 is normally about 3.3nF-5.6nF. The power of lamp is larger, the induction of L2 is smaller, the real value is determined by debugging in order to close or meet the rated current of the lamp.



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