STEVAL-ILL045V1 9 W, A19 format Triac dimmable, high power factor, non-isolated LED driver based on the HVLED815PF (for US market) Data brief Features 9 W output, for light equal to a range from 40 W to 60 W incandescent +/-5% primary-side current regulation, no optocoupler Low component count - 25 parts, including the EMI filter Only 1 tight-tolerance component High efficiency, > 86% High power factor > 0.98 and low THD, < 20% over 90 V to 132 V range The circuit regulates LED current over a wide Fits in 28 mm tubing, 52 mm overall length range of line voltage and LED string voltage, and Dimmable with common Triac dimmer it is dimmable with standard Triac-based dimmers. RoHS compliant Description The STEVAL-ILL045V1 demonstration board showcases STs 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 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. June 2012 Doc ID 023390 Rev 1 1/4 For further information contact your local STMicroelectronics sales office. www.st.com 40R 2 2 : AC 2 2 .O U& - 6 7 6C 3E (Y 4 6 2 , 2 2 7 AU K02 2 ,P (Y 2 )R 6 2 5 . )R 6 . R 4 7 0R 2 7 /UOS GE Schematic diagram STEVAL-ILL045V1 1 Schematic diagram Figure 1. Schematic diagram P 6 P X ,% 7 ,% ,% ,% 7 (4 (4 AEV A R PLE TP I CABER4SCUITIHC %X AT MRO&S,% RA M E 4 3R /6 & 30 3 ( 4 & + EURTO HTNI DQS W P- OFOA PA T4 SE U RM AY TE &U6 3- 4RA M RE 3 & 6 6 REF L P M S M S ER6F IRM )P) L X + + CI MO -- U6 & 3 I6 NIA ,(6 &0 % C R U 32 6CC ),% &),-4 A I ),% & N A I - U& 6 A I 0 - M P A I . NIJ + + 7 6 6 M ) %2 4-3 HM LIU&/SBE ETON E - V 2/4 Doc ID 023390 Rev 1 44( + + 6 6 U& U& TI ANTI ,% HE AM N& RI UTPUT T 6 P 2 6 U N R CO / N R N R N R . 3 3OCE