New Industry Products

PoE-Powered 45W LED Driver with BLE-Enabled Control – Reference Design

May 21, 2019 by Paul Shepard

The STEVAL-POEL45W1 Power over Ethernet (PoE) powered LED driver reference design from STMicroelectronics delivers a power output of 45W and dims LEDs down to 1% of the maximum brightness without any flicker. The solution supports remote dimming control via Bluetooth with the PoE_Lighting Android application (available on Google Play).

You can use this reference design to develop complete indoor network-powered lighting solutions with IP-based Powered Devices (PDs), without additional ac power infrastructure, and extend the functionality to include remote data management via existing LAN networks.

The reference design features a highly integrated PM8805 IEEE802.3bt-compliant Powered Device (PD) PoE interface, a high efficiency LED6000 LED driver able to source up to 3Adc current, and a certified SPBTLE-1S Bluetooth Low Energy module, compliant with BT specifications v4.2 and BQE qualified.

The STSW-POEL45FW board firmware is programmed via the STSW-BNRG1STLINK utility.


  • PoE-PD IEEE 802.3af/at/bt compliant
  • Constant current output, working in buck topology
  • Output current 1.4A with < 0.05% current regulation
    • Number of LEDs connected at output: 6 to 11 white LEDs (3.3V each)
  • Wireless ON/OFF and dimming control with PoE_Lighting Android application
  • Digital dimming with 1% resolution
  • LED driver input voltage range 37- to 57-Vdc
  • Peak efficiency at maximum load >95%
  • Low standby power consumption <100mW
  • Comprehensive set of protections:
    • open/no-load circuit protection
    • short/overload circuit protection
  • RoHS compliant
  • WEEE compliant