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Optoelectronics/Displays  

Controller offers high power factor for lighting apps

Posted: 16 Mar 2015     Print Version  Bookmark and Share

Keywords:AC-DC converter  HVLED001  LED 

STMicroelectronics unveiled an AC-DC converter, the HVLED001, which is designed for LED-lighting applications where energy efficiency, reliability and cost-competitiveness are key factors.

The HVLED001 enables equipment manufacturers to design high-end, professional lighting applications for commercial areas, retail shops, offices and outdoor spaces that offer best-in-class performance with minimum bill of materials and assembly costs.

HVLED001

Operating directly from the rectified mains, the HVLED001 integrates both high- and low-voltage circuitry on the same chip, eliminating the cost of external high-voltage circuitry. The high power factor (>0.9), low Total Harmonic Distortion (<10 per cent), and high power-conversion efficiency (>90 per cent) ensure compliance with the most stringent lighting standards in an efficient, compact, and cost-effective solution to drive LEDs in the power range from 20W up to 150W.

Key features of the HVLED001 include:

  • Embedded 800V High-Voltage start-up, ensuring LED start-up in less than 0.5s, along with reduced BOM and increased robustness;
  • Constant output-voltage primary-side control with ±2 per cent accuracy ensuring a stable light experience across multiple LED-light sources;
  • Embedded multiplier and THD (Total Harmonic Distortion) optimiser that provides fast response to line-voltage variations;
  • Adjustable Frequency Foldback for improved efficiency and regulation under low load-dimming conditions;
  • Comprehensive smart protections including input over-voltage, over-current, brownout and opto-coupler failure, all latch-free thanks to a smart auto-restart timer.

Housed in a compact SO10 package, the HVLED001 is available in volume with a price of $0.5 in quantities of 1,000 units.





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