STMicroelectronics 9 W, A19 format, triac dimmable, High Power Factor, non-isolated LED driver based on HVLED815PF for US market STMicroele STEVAL-ILL045V1 Data Sheet

For further information contact your local STMicroelectronics sales office.

June 2012

Doc ID 023390 Rev 1

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9  W,  A19 format Triac dimmable, high power factor, non-isolated

LED driver based on  the HVLED815PF  (for US market)

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9 W output, for light equal to a range from 40 W 
to 60 W incandescent

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+/-5% primary-side current regulation, no 
optocoupler

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Low component count - 25 parts, including the 
EMI filter

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Only 1 tight-tolerance component

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High efficiency, > 86%

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High power factor > 0.98 and low THD, < 20% 
over 90 V to 132 V range

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Fits in 28 mm tubing, 52 mm overall length

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Dimmable with common Triac dimmer

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RoHS compliant

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 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. 

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.