this is information on a product in full production. june 2012 doc id 023389 rev 1 1/4 4 STEVAL-ILL044V1 9 w triac dimmable, high power factor, isolated led driver based on the hvled815pf (for us market) databrief features +/- 5% primary-side current regulation, no optocoupler fully isolated output low component count only 1 tight-tolerance component high efficiency, >86% high power factor >0.98 low thd, < 20% over 90 v to 132 v range fits in 28 mm tubing 9 w output, for light equal to range from 40 w to 60 w incandescent startup within 0.2 seconds dimmable over 90 v to 132 v voltage range rohs compliant description the STEVAL-ILL044V1 demonstration board showcases st?s new led driver chip, hvled815pf. it solves the problem of low-cost drive circuitry for led replacements for 40 w incandescent or equivalent compact-fluorescent lamps. the hvled815pf is a new integrated power controller using primary-side control to achieve led current regulation within +/-5%. (it also has primary-side voltage regulation, used here for open load protection). the device incorporates an 800 v avalanche- rated fet and fits in a standard so-16 package. an internal startup circuit eliminates the need for external rapid-start circuitry. the pfc-flyback power converter operates in transition mode for the highest efficiency and best use of components. with the addition of a few extra components the hvled815pf is made to draw near-sinusoidal input current from the ac line. the circuit regulates led current over a wide range of line voltage and led string voltage, and is dimmable with standard triac-based dimmers. www.st.com
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STEVAL-ILL044V1 revision history doc id 023389 rev 1 3/4 2 revision history table 1. document revision history date revision changes 29-jun-2012 1 initial release.
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