After completing a comprehensive PCB Design Course provided by Altium, we have been assigned a project to apply and test our skills in practical PCB Design. For this project, we will be creating a Power Regulator LED Shield Board specifically designed for an Arduino UNO. This shield board will serve two primary functions:
- Voltage Step-Down from 12V to 5V DC: The board will include a voltage regulator circuit to step down the input voltage from 12V to 5V DC, supplying the necessary power to the Arduino UNO safely and efficiently.
- Powering a Bank of LEDs in Parallel: The board will provide a stable power supply to a bank of LEDs connected in parallel, ensuring consistent brightness and performance.
The functional requirements of the board are as follows:
- Receive power from a 12 V DC input
- Regulate power down to 5 V DC
- Deliver 12 V DC power to a bank of 2 LED lights in parallel
- Provide 5 V DC power to the main Arduino Uno board
- Provide enough current to power the Arduino and the LEDs
- Regulate power with at least 90% efficiency
- LEDs must be SMD parts with high power output (at least 10 W each)
- Power input connection is provided by standard 16 AWG wire
- Components must be placed only on the top layer
- Total board thickness must be standard thickness (approximately 62 mils)
Since the board will be mounted onto the Arduino UNO, its dimensions will be based on those of the UNO.
These are the schematics, made from Altium Designer's schematic editor:
Below is the finalized version of the PCB Layout:
Below is the finalized 3d view of the board:
