STEVAL-ILL022V1: 80W Batt Charger w/ LED Driver


The solar-LED streetlight controller consists of one 80 W battery charger and one 25 W LED driver. During the daytime, when there is sufficient sunlight, the charger converts the electricity from the solar panel and charges the battery. At nighttime, the battery powers on the LED lamp as streetlight.

If it is rainy or cloudy for several continuous days, the battery will gradually run out of power. The controller then resorts to the AC mains supply to power on the LED until the battery has had time to fully charge again.

Main features of the solar-LED streetlight controller:

  • Maximization of electricity conversion efficiency from solar panel by way of maximum power point tracker (MPPT)

  • Automatic day/night/weather detection

  • Automatic battery/mains switch over

  • Constant current control for LED lamp

  • Battery charge control

  • Optional LED lighting duration mode

  • Easy system monitoring via debug LED indicators

  • Full protection function for OTP, OCP and UVP


Manufacturer STMicroelectronics
Category Energy Harvesting
Sub-Category Solar Battery Chargers
Eval Board -
Application / Target Market LED Solar Streetlight
Voltage In up to 50 V
Cell Type Lead Acid
Voltage Out 13.8 V
Current Out - Not Given
Features Battery Charger
Fault Indication
Open Circuit Protection
Thermal Protection
Under Voltage Protection, Brown-Out
Component Count + Extras 277 + 5
Design Author STMicroelectronics
Main I.C. Base Part STM32F101RxT6
Input Power 80 W
Current In 4.5 A
Battery Capacity 50 Ah

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