Hardware Implementation of POE+ (20W) ECE-406
The purpose of this project is to implement a design that can power up to 20 Watts to power an array of LCD screens I want to power for inventory management for my Company. I was able to create a power board that followed the POE+ (803.11at) protocol which can deliver up to 25W from an Ethernet cable. The basic principle of the design is to convertor the 48VDC on the POE+ powered lines following the 803.11at protocol and convert it to a useable 5V that can power many LCD screen and a Raspberry PI. I have created a two-stage device that first starts by taking 48V and stepping it down to 12V using a flyback convertor, which uses the MP8008 by MPS. The 12V is then stepped down further using a buck convertor to step the voltage down to 5V then is supplied to the Raspberry PI and the two LCD screens in the case of this project. I have used a basic USB 3.0 cable to carry the SPI data for the LCD screen along with the digital encoder's to either write to the LCD screen and read in the values on the digital encoders.
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Project Information | Contains all of the information inside the project, schematics, software for testing LCD screens, and the BOM to build the PCB. | Link |