STMicroelectronics STEVAL-ILL053V2 Evaluation Board
STMicroelectronics STEVAL-ILL053V2 Evaluation Board implements a 130W LED power supply for street lighting. The circuit comprises two stages: a front-end PFC using the L6562AT and an LLC resonant converter based on the L6599AT. The board has high efficiency, wide input mains range (85-305VAC) operation, and long-term reliability.
Mean time between failures (MTBF) in power supplies is typically affected by the high failure rate of common electrolytic capacitors. The STEVAL-ILL053V2 evaluation board offers an innovative design approach using film capacitors from EPCOS in place of electrolytic capacitors.
Thanks to the high efficiency achieved, only a small heatsink for the PFC stage is needed, while the other power components implement surface mount technology (SMT), significantly lowering costs.
With auto-restart, the STEVAL-ILL053V2 evaluation board also protects against overload, short-circuit, and open-loop in each stage and overvoltage protection on the input.
Features
- Extended input mains range: 85 to 305VAC - frequency 45 to 55Hz
- Output voltage: 48V at 2.7A
- Long-life: electrolytic capacitors not used
- Mains harmonics per EN61000-3-2 Class C
- Efficiency at a full load greater than 91% at 115VAC
- EMI in accordance with EN55022 Class B; EN55015
- Safety: double insulation, under EN60950, SELV
- Dimensions: 75x135mm, 30mm maximum component height
- PCB: single side, 35μm, FR-4, mixed PTH/SMT
- RoHS compliant
- WEEE compliant
ST Components on STEVAL-ILL053V2 Board
1. D11 STPS10150CG power schottky rectifier
2. D12 STPS10150CG power schottky rectifier
3. D2 STTH3L06U ultrafast high voltage rectifier
4. D20 STPS1L60A fast switching diode
5. Q2 STF25N60M2-EP N-channel power MOSFET
6. Q4 STD11N60M2-EP N-channel power MOSFET
7. Q5 STD11N60M2-EP N-channel power MOSFET
8. U1 L6562AT tm pfc controller
9. U2 L6599AT improved hv resonant controller
10. U5 TS2431AILT programmable shunt voltage reference
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