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 Fits in 28 mm tubing, 52 mm overall length Dimmable with common Triac dimmer RoHS compliant The circuit regulates LED current over a wide range of line voltage and LED string voltage, and it is dimmable with standard Triac-based dimmers. Description The STEVAL-ILL045V1 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 avalancherated 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 For further information contact your local STMicroelectronics sales office. 1/4 www.st.com 4 2/4 .! Doc ID 023390 Rev 1 N& $ "!4:&),- # U& 6 # N& ),%$ 2 + ACINJ $RAIN # $RAIN #/-0 U& 6 $-' "2)$'% 3-4 ),%$ $RAIN 6 # $RAIN U& 6 # 6CC M(Y '.$ U& 6 # .! + .# , #3 !# 6 32# .! !# "2 .! /HM &USIBLE 3EE NOTE 2 2 + 7 7 2 2 7 2 2 $-' 6CC 0RI COM # U& 6 --3$ 4 $ (6,%$0& 5 $RAIN 0RI6 2 + 2 + 6REFL6 6REFL ,PRI M(Y )PK02) ! AUX . )RMS6 ! . )RMS6 ! U& 6 # 2 + 7 7 ,%$ ,%$ 7(4 ,%$ ,%$ 7(4 &OR ,%$S AT M! 4 #RAMER #3-64 OUTPUT TAP AT OF PRIMARY # P& 6 #/' $ 3403(! # U& 6 2 + %XAMPLE 4HIS CIRCUIT CAN BE USED WITH OTHER ,%$ QUANTITIES .OTE #RAMER #3- 64 4 344(! P& # ! AVERAGE Figure 1. /UTPOS 1 3OURCE $ Schematic diagram STEVAL-ILL045V1 Schematic diagram Schematic diagram !PPX 6 COMP !-V STEVAL-ILL045V1 2 Revision history Revision history Table 1. Document revision history Date Revision 29-Jun-2012 1 Changes Initial release. Doc ID 023390 Rev 1 3/4 STEVAL-ILL045V1 Please Read Carefully: Information in this document is provided solely in connection with ST products. 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