WEEK 3 UPDATE – Project Update 1
Image Above: Rough sketch of expected final project design as well as general schematic/layout for buck converter.
To-Do List for Week 4
- OVERALL GOAL: Finish both 5 volt and 3.3 volt schematics, part selection, board layout design, and preparation for board manufacturing.
- Schematic Sub Goal – Alter my current schematic to step down from 12 volts to 5 volts instead of the step down to 2.5 volts, to do so I must:
- Alter resistor 1 to set the buck converter IC to convert 12 volts down to 5 volts instead of the initial design that follows the datasheets typical application of 2.5 volts.
- Utilize Texas Instruments provided Excel calculator to assign the typical input voltage of 12 volts and the wanted output of 5 volts and 15 amps.
- Incorporate the calculators recommendations into my initial schematic.
- Part Selection Sub Goal – Select parts that align with my newly updated schematic, to do so I must:
- Start with the typical application parts list and alter parts based on my updated schematics.
- Ensure my part selections are no smaller than the 0603 footprint to allow for hand soldering to be possible without major difficulty.
- Board Layout Design Sub Goal – Create a board layout in KiCAD that meets all necessary requirements per the manufacturers datasheet, to do so I must:
- Create and/or reference some type of list of requirements based off the manufacturers datasheet.
- Reference the provided recommended typical application board layout for an initial design.
- Alter the initial typical application board layout to fit the 0603 or larger footprints and ensure that there is adequate room to hand solder.
- Prepare For Board Manufacturing Sub Goal – Ensure everything is prepared for boards to be ordered and manufactured, to do so I must:
- Double check all my work with my team members to ensure that all potential issues or mistakes are caught and addressed before board manufacturing.
- Make any necessary or recommended design changes.
- Return to my team members to double check my board again.
- Repeat process until every team member is satisfied with the state of the board and ready for it to be put into production.
Posted Date: 09/12/2024
WEEK 2 UPDATE
- Selected the TPS548A28 as the buck converter IC of choice for our application.
- Created the initial buck converter schematic in KiCAD based on Texas Instrument’s datasheet for the TPS548A28.
Posted Date: 09/12/2024
WEEK 1 UPDATE
- Started my first week in OSHE!
- Started reviewing the plans for the buck converter selection
Posted Date: 08/30/2024