* For Constant Current, the board must be modified as described on page 6 of the user guide. *
This application note describes the characteristics and features of a 130 W demonstration board (EVL130W-SL-EU), tailored on an LED power supply specification 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.
The peculiarities of this design are; 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 electrolytic capacitors and their typical high failure rate, unless using very expensive types, this board offers a very innovative design approach as the board doesn't implement any electrolytic capacitors, which are replaced by film capacitors from EPCOS.
| Manufacturer | STMicroelectronics |
|---|---|
| Category | Lighting |
| Sub-Category | LED Drivers - AC / Offline |
| Eval Board Part Number | 497-10540-ND |
| Eval Board Supplier | STMicroelectronics |
| Eval Board |
Board not Stocked
|
| AC Voltage |
230 V
|
| Outputs and Type |
1 Isolated
|
| Current Out |
2.7 A
|
| Voltage Out (Max) |
48 V
|
| Efficiency @ Conditions |
>93%, 230V in, Full Load
|
| Features |
Over Current Protection
Over Voltage Protection PFC Short Circuit Protection Soft Start Under Voltage Protection, Brown-Out |
| Switching Frequency |
130 kHz
|
| Component Count + Extras |
132 + 2
|
| Design Author |
STMicroelectronics
|
| Application / Target Market |
Lighting: LED Street Lighting
|
| Voltage In |
177 ~ 277 VAC
|
| Power Factor | |
| Standard(s) | |
| Main I.C. Base Part |
L6562A
L6599 |
| Date Created By Author | |
| Date Added To Library | 2020-06 |
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