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 | AC/DC and DC/DC Conversion |
Sub-Category | AC/DC SMPS - Single Output |
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
|
Voltage Out |
48 V
|
Current Out |
2.7 A
|
Output Power |
130 W
|
Features |
Over Current Protection
Over Voltage Protection PFC Short Circuit Protection Soft Start Under Voltage Protection, Brown-Out |
Efficiency @ Conditions |
>93%, 230V in, Full Load
|
No-load Input Power @ Voltage |
- Not Given
|
Switching Frequency |
130 kHz
|
Internal Switch |
No
|
Component Count + Extras |
125 + 2
|
Voltage In |
177 ~ 277 VAC
|
Design Author |
STMicroelectronics
|
Application / Target Market |
Lighting: LED Street Lighting
Telecom |
Main I.C. Base Part |
L6562A
L6599 |
Date Created By Author | |
Date Added To Library | 2020-06 |