The ISL1904 is a high-performance, critical conduction mode (CrCM), flyback controller used for single-stage conversion of the AC mains to a constant current source with power factor correction (PFC).
This design example report describes a 40 W, 2-stage, buck boost and isolated flyback, dimmable LED ballast. It has an input voltage of 90 VAC – 305 VAC and a 42 V, 960 mA output. This is applicable ...
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