LED driver futureproofs with distortion-cancelling technology
Featuring a distortion cancelling input current shaping (ICS) circuit, the HVLED007 AC/DC LED driver enables energy-saving solid-state luminaires to comply with increasingly stringent lighting regulations, says STMicroelectronics.
The HVLED007 implements a peak current mode power factor control (PFC) control optimised for isolated high-power-factor quasi-resonant flyback converters. The ICS ensures an effectively sinusoidal input waveform with very low total harmonic distortion (THD) over the full load and input-voltage range, confirms ST. THD is below five per cent at full load. With near-unity power-factor capability and maximum energy efficiency over 90 per cent, the HVLED007 can be used for a single control IC to address multiple medium- and high-power LED-lighting applications up to 80W.
The HVLED007 is part of the HVLED family of digital ICs for driving LEDs directly from the rectified mains. The members are characterised by integration and support for economical primary-side regulation to lower the bill-of-materials costs and compact circuit size while enhancing system reliability and lighting performance, according to ST.
The electrical parameters of the HVLED007 are specified down to -40 degrees C, allowing use in outdoor lighting including street lighting as well as indoor applications. The totem-pole output stage can source and sink 600mA and 800mA respectively, enabling use in EN61000-3-2 compliant switched-mode power supplies up to 100W in addition to lighting applications. There is also short-circuit, overload, and over-voltage protection integrated in the HVLED007.
The HVLED007 is in production now in the industry-standard SO8 small-outline package.
