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STEVAL-ILL052V1：48 V - 130 W high efficiency converter with PFC for LED street lighting applications based on L6562 and L6599 - European version

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 short-circuit, open-loop by each stage, or input overvoltage, with auto-restart.

Key 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

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