Description
The STEVAL-ILL052V1 demonstration board implements a 130 W LED power supply for street lighting. The circuit is composed of two stages: a front-end PFC using the L6562AT and an LLC resonant converter based on the L6599AT. What distinguishes this design is its very high efficiency, extended European input mains range (177-277 VAC) operation, and long-term reliability. Because reliability MTBF (mean time between failures) in power supplies is typically affected by the high failure rate of electrolytic capacitors, unless using very high-end, expensive types, the STEVAL-ILL052V1 demonstration board offers an innovative design approach using film capacitors from EPCOS in place of electrolytic capacitors. Thanks to the high efficiency achieved, no heatsinks are required. The STEVAL-ILL052V1 demonstration board also provides protection against overload or shortcircuit, open-loop by each stage, or input overvoltage, with auto-restart.

Features
■ Extended European input mains range: 177 to 277 VAC - frequency 45 to 55 Hz
■ Output voltage: 48 V at 2.7 A
■ Long-life electrolytic capacitors not used
■ Mains harmonics: in accordance with EN61000-3-2 Class C
■ Efficiency at full load: greater than 90%
■ EMI: in accordance with EN55022 Class B
■ Safety: double insulation, in accordance with EN60950, SELV
■ Dimensions: 75 x 135 mm, 30 mm maximum component height
■ No heatsinks needed
■ PCB: single side, 35 µm, FR-4, mixed PTH/SMT
■ RoHS compliant