IRS 2983 LEDriver IR Control IC The IRS

IRS 2983 LEDriver. IR™ Control IC The IRS 2983 control IC for Flyback and Buck-Boost topologies is used in LED drivers with optional TRIAC dimming requiring minimal extra components. The IRS 2983 employs primary side regulation for fixed LED loads, reducing component count and simplifying design by eliminating the opto-isolator and other components necessary for isolated feedback. Features • • • • Flyback LED Driver Critical-conduction/transition mode operation Maximum frequency limit, discontinuous mode operation at light load Primary constant power control (primary side regulator) High Voltage Rapid Startup Cycle by cycle over-current protection Hiccup mode over voltage protection High power factor Low THD Triac dimming option Micropower startup Low quiescent current Latch immunity and ESD protection Noise immunity Advantages • • The new IC controller offers high power factor and low THD with output current regulation over wide input range for fixed load applications. Comprehensive protection features include hiccup mode over-voltage protection, cycle-by-cycle over current protection and open and short circuit protection. The device also supports TRIAC dimming with a few additional components. Traditional incandescent, halogen, and CFL light sources are rapidly being replaced by LED bulbs and fixtures. The Flyback converter is the preferred power-supply topology for a large segment of the LED driver market as Flyback LED drivers provide an attractive tradeoff between cost and performance. HOME PAGE DATASHEET PRESS RELEASE HI-RES GRAPHIC January 2014