Differentiated LED lighting systems improve energy efficiency, simplify installations, facilitate data gathering and monitoring have become requirements in domestic, office and industrial environments.
The global acceptance of LED lighting also makes the LED system ideal for adding intelligence by using sensors as part of the Internet of Things (IoT).
In such a system, power conversion efficiency and circuit complexity will benefit from low voltage (below 60V SELV) operation.
Power over Ethernet (POE) is an integral part of telecom infrastructure and the same
Ethernet cable can be used for smart lighting applications.
Thus it mitigates the AC power processing complexity as well as safety threats.
This article presents the STEVAL-POEL45W1, a constant current smart LED driver, capable of working with the latest PoE standard on Ethernet RJ-45cable and wirelessly controlled through BLE.
The power supply for the LED driver developed is capable of operating from 37–57V input DC voltage with a maximum power output of 48W.
The evaluation board is also featured with digital/PWM dimming.
The depth of PWM dimming is close to 1%. The smart dimming and ON/OFF of LEDs is controlled through an Android application.
The standby power (no load) consumption meets the energy targets set by Energy Star and EU Eco-design standards.
The converter efficiency reaches 95% for most of the input voltage range. All protection features like LED open and short are present in the developed solution.
The STEVAL-POEL45W1 evaluation board is compact in size to fit into existing commercially available LED extrusions. read full pdf
 Enabled Smart LED Lighting System: The global acceptance of LED lighting also makes the LED system ideal for adding){kind=link}