Power Electronics / Power Management


Controller for dimmable LED drivers

12 March 2014 Power Electronics / Power Management

International Rectifier has introduced the IRS2983 control IC for single stage flyback and buck-boost topologies used in LED drivers and power supplies. The IC employs primary side regulation that reduces component count and simplifies design by eliminating the opto-isolator and other components necessary for isolated feedback for fixed loads. It also features a rapid startup circuit, offers high power factor and low THD, and operates over a wide input range for many LED lighting applications. Protection features including hiccup mode over-voltage protection, cycle-by-cycle over-current protection and open and short circuit protection are also included. Housed in an SO-8 package, the device also supports TRIAC dimming.



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