Power Supply Full Design! - Let's Design a Custom Power Supply - Finale

Step-by-Step Tutorial: Designing a Custom Power Supply

Materials Needed:

• PCB design software
• Components mentioned in the video transcript (switches, connectors, regulators, etc.)
• Manufacturing files for PCB production

Step 1: Designing the Power Flow Control System

1. Connect the switches as discussed in the video to control the power flow from the USBC connector and the two batteries.
2. Connect the B boost to the regulators 1, 2, and 3. Label the connections as plus AA and minus AA for a voltage range of 3.6 to 6.4 volts.
3. Ensure that the USBC connector is always connected to the rechargeable cell for charging when plugged in.

Step 2: Setting up Power Sources

1. Use a single pole double throw switch to toggle between the AA cell and the rechargeable battery for power supply to the 5V buck boost converter.
2. Use another switch to select the power source for the regulators - either the USBC connection or the output from the buck boost converter.

Step 3: Connecting Components

1. Ensure that there is no backfeeding of power by connecting the USBC 5 volts to the buck boost converter and then onwards to the regulators.
2. Connect the buck boost converter to toggle between the battery and the AA cells for power supply.

Step 4: Finalizing Connections

1. Connect the USB 5 volts and the 5 volts from the buck boost converter to the power source switch for the regulators.
2. Connect the power supplies to the three regulators and toggle between the USBC supply and the 5 volts from the buck boost converter.

Step 5: Adding Banana Sockets

1. Add banana sockets for the three power supplies and use different colors for easy identification.
2. Ensure proper connections between the sockets and the power supplies.

Step 6: Adding Mounting Holes and Finalizing Design

1. Add mounting holes for the switches on the PCB design to allow mounting on a separate panel if needed.
2. Check the design for all connections and ensure everything is in place before finalizing.

Step 7: Generating Manufacturing Files

1. Go to the PCB design software and plot the required layers for the PCB (mass cell screen paste, edge cuts).
2. Press the plot button to generate the manufacturing files and then generate the drill files for the PCB production.

Step 8: Testing the Board

1. Assemble the board with all components and switches.
2. Test the functionality of the power supply system designed.
3. Make any necessary adjustments if needed for proper functioning.

Step 9: Finalizing and Ordering the Board

1. After testing, finalize the design and order the PCB for production.
2. Ensure that all connections are correct and the board functions as intended.

Step 10: Generating Manufacturing Files (Finale)

1. Use the PCB design software to generate manufacturing files for the PCB.
2. Plot the required layers for a four-layer board (mass cell screen paste, edge cuts).
3. Check the generated files using a Gerber viewer to ensure accuracy.

By following these steps, you can design and create a custom power supply system as demonstrated in the video.