Board Development Path

Plan: to develop the PDB in 3 parts so that they can be developed and perfected separately.

In this version, just want to focus on getting each individual component working properly. Will worry about connecting them together nicely later.

5V Board	17V Board	Base Board

5V Board	17V Board	Base Board
Owner(s): Melissa	Owner(s): Rayyan	Owner(s): Billy, Logan
Development Milestones: Select a design from WeBench In stock IC Has at least 1 visual layout reference (pref 2) WeBench, datasheet, eval board, dev board, online reference Datasheet has layout guidelines Read through the datasheet, try to get a general overview of the features/function. Looks for any exceptions or caveats. Make sure the basic inputs, outputs are supported in the datasheet Order the stock risk components Implement the design EXACTLY as it appears in WeBench Idividual design review Group design review Verify the circuit matches WeBench Verify the circuit is consistent with the datasheet Read through the datasheet for any caveats Reformat the circuit with Logan to bring it to team schematic standards Group design review to verify no electrical changes were made during the reformatting Implement design review changes Complete the placement of the board Don’t worry about space constraints but the board should be generally tight Refer to the datasheet and layout references Refer to buck converter documentation below Open Open Open Group design review to make sure the board is compliant with all referances Work with Logan to implement stack up, power planes and polygons Open Route the remaining connections Check trace widths with SaturnPCB Add additional power design elements to the board Via stitching Teardrops Thermal reliefs Group design review for general and buck specific layout practices Add the finishishing touches Logo Meme Header items Order the boards Order the remaining parts Create an Assembly and Testing document Assemble the design Test the design	Development Milestones: Select a design from WeBench In stock IC Has at least 1 visual layout reference (pref 2) WeBench, datasheet, eval board, dev board, online reference Datasheet has layout guidelines Read through the datasheet, try to get a general overview of the features/function. Looks for any exceptions or caveats. Make sure the basic inputs, outputs are supported in the datasheet Order the stock risk components Implement the design EXACTLY as it appears in WeBench Individual design review Group design review Verify the circuit matches WeBench Verify the circuit is consistent with the datasheet Read through the datasheet for any caveats Reformat the circuit with Logan to bring it to team schematic standards Group design review to verify no electrical changes were made during the reformatting Implement design review changes Complete the placement of the board Don’t worry about space constraints but the board should be generally tight Refer to the datasheet and layout references Refer to buck converter documentation below Open Open Open Group design review to make sure the board is compliant with all referances Work with Logan to implement stack up, power planes and polygons Open Route the remaining connections Check trace widths with SaturnPCB Add additional power design elements to the board Via stitching Teardrops Thermal reliefs Group design review for general and buck specific layout practices Add the finishishing touches Logo Meme Header items Order the boards Order the remaining parts Create an Assembly and Testing document Assemble the design Test the design	Development Milstones: Review the current board features with Nico and David Get rid of anything we don’t need Ultrasonic Sensors USB Temperature Sensor 17V and 5V Buck Make a list of anything that needs to be added in Remove the Buck converters from the design and scrap the layout Validate the schematics for all existing components Make note of any components with specific layout requirements STM32 Pin cababilities Add in any new components/features 48V load monitorying 48V Terminal for each ODrive Add inputs for thermocouples to place around the E-box at a later date Add power input from 17V and 5V External Buck Fix STM schem and symbol Update 17V Load monitoring Update CAN tranceiver Validate the schematic for any features that were added Group design review to ensure that all of schematics are consistent with IC datasheets and team best practices Implement design review changes Meet with David and create rough sketch of the layout and of the PDB system Optmize for the e-box Make sure there is the correct number of terminals for each rail Make sure all of the rails are oriented conveiniently Make sure the boards connect in such a way that their arrancgment is convenient for mounting in the E-box Place components on the board, keeping in mind that this board will need to support incoming power from 17V and 5V bucks Layout To-Do Change out the 3.3V diode – too small Add direction indicators to diode footrprints Implement stack up and polygon connections Route the rest of the board Validate the layout for any of the components which have specific layout requirements Group design review to ensure the layout is compliant with any layout guidelines in the IC datasheets Add the finishishing touches Logo Meme Header items Order the board Order components Create an Assembly and Testing document Create a Firmware testing spec sheet Assembly the design Test the features of the design that can be tested without firmware and without the other buck converters Test the buck converter features using the power supplied from power supplies for the buck converters Hand off a working version of the board to firmware so they can begin development Test the buck converter features using the OTS buck converters being powered from the battery Test the the buck converter features using the buck converters we desinged.