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October 2012 Doc ID 023797 Rev 1 1/4
4
STEVAL-ILL052V1
48 V - 130 W high efficiency converter with PFC for LED street
lighting applications based on L6562 and L6599 - European version
Data brief
Features
■ Extended European input mains range: 177 to
277 V
AC
- 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
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 V
AC
) 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.
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