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STEVAL385LEDPSR

100W LED street lighting demonstration board using STLUX385A
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The STEVAL385LEDPSR demonstration board is a complete and configurable solution that efficiently controls a single dimmable high brightness LED string using the STLUX385A digital controller.

The LED efficiency is high during all stages of dimming and the STEVAL385LEDPSR can achieve a 92% efficiency during full load while maintaining a low < 200 mW power consumption during idle periods.

The STLUX385A device handles a primary side regulated power conversion stage as well as all the supported communication links.

The power conversion stage consists of a PFC regulator followed by a “Zero Voltage Switching” (ZVS) LC resonant stage. The high precision dimming is adjusted using a primary side regulation (PSR) control technique.

The LED brightness can be dimmed by controlling the LED current down to a very low level.

The STEVAL385LEDPSR demonstration board provides all the physical communication interfaces such as a DALI, insulated 0-10 and UART. All the communication is managed by the STLUX385A device. The UART interface and STLUX385A flexibility allow to quickly connect the STEVAL385LEDPSR to alternative interfaces such as Wi-Fi, power line modems, Bluetooth®and Zigbee®.

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Errata Sheet
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Data Brief

Key Features

  • STLUX385A based
  • High efficiency (92%)
  • Primary side controlled
  • Up to 100 W (100 V at 1 A or 200 V at 0.5 A)
  • Single isolated output suitable for LED connection.
  • Wide input voltage range: 90 V to 265 V AC
  • Adjustable LED current and dimming
  • Output resolution: 11-bit equivalent.
  • IDLE mode power consumption: < 200 mW
  • Real-time fault detection and protection (e. g.: short- or open circuit)
  • Remote control via DALI, 0 - 10 V, UART

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STEVAL385LEDPSR STLUX385A

Design Resources

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Technical Documentation

Product Specifications

Description Version Size
pdf
DB2161: 100 W LED street lighting application using STLUX385A
1.0 402 KB

Application Notes

Description Version Size
pdf
AN4382: 100 W LED street lighting application using STLUX385A
1.0 1,545 KB

Hardware Resources

Bill of Materials

Description Version Size
pdf
STEVAL385LEDPSR bill of material
43 KB

Schematic Pack

Description Version Size
pdf
STEVAL385LEDPSR schematics
94 KB

Publications and Collaterals

Flyer

Description Version Size
pdf
STLUX385A 100 W LED street lighting
2,068 KB

Sample & Buy

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Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL385LEDPSRActiveSTLUX385A-140Distributor reported inventory date: 2014-04-18
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA111
Ecopack1-

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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