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100W LED street lighting demonstration board using STLUX385A

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 board to alternative interfaces such as the Wi-Fi, power line modems, Bluetooth®and ZigBee®.

This demonstration board is available with an order code STEVAL-ILL066V1 now.

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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



图案 资源


Technical Documentation

Product Specifications

描述 版本 大小
DB2161: 100 W LED street lighting application using STLUX385A
2.0 390 KB

Application Notes

描述 版本 大小
AN4382: 100 W LED street lighting application using STLUX385A
1.0 1,545 KB

Hardware Resources

Bill of Materials

描述 版本 大小
STEVAL385LEDPSR bill of material
1.0 43 KB

Schematic Pack

描述 版本 大小
STEVAL385LEDPSR schematics
1.0 94 KB

Publications and Collaterals


描述 版本 大小
STLUX385A 100 W LED street lighting
1.0 2,068 KB

License Agreement

描述 版本 大小
Evaluation products license agreement
1.0 126 KB

样品 & 购买

产品型号 Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL385LEDPSRNRNDSTLUX385A-140No availability reported, please contact our Sales officeEcopack1-

(*) 建议零售价格仅用于预算,以美元为单位,每。的报价,以当地货币计算的价格,请联系您当地的 ST 销售办事处 或我们的 分销商
(**) 材料声明表格上提供st.com可以是一般的文件,根据最常用的包,包内的家庭。出于这个原因,他们可能不是100%准确,对于一个特定的设备。请联系我们 销售支持 在特定设备上的信息。
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