Launch_DAQ

3 Boards – Stacked

Thoughts:

• Enables for if main board is supplying 3V3 so sub-boards dont need it?

• Or just keep different, Isolated 3V3 for each board

  • Can't really do this because XMC is gonna attach to all three stacked boards

    • If the boards are individual, the 3V3 still needs to be there to power XMC 

• Would be cool if they could work independently with their own XMCs, or stacked

• Top Board:

  • Power Supplies

    • 28V Incoming

    • Switching to 9V?

      • LDO to 5V

      • LDO to 3V3

        • This 3V3 will likely be digital supply for whole DAQ, gotta watch for power consumption / current

  • Thermocouples

    • These use 3V3 just like the XMC does

• Middle Board:

  • Power Supplies

    • Takes in 28V from Top Board or external header?

    • LDO to roughly 26 for Current Loops

    • Charge Pump to get ±2V5 for ADC 

    • LDO

  • 12x Current Loops

    • Needs Regulated 26V

  • ADCs

    • ±2V5

    • 3V3 

• Bottom Board

  • Power Supplies

    • Takes in 28V from Top Board or external header?

    • 3V3 Charge Pump for Full-Bridge

  • Deployment Channels

    • Needs GPIO

    • LiPo Battery for current draw of charges

    • Might be cool to have LiPo charger too

  • 4x Full-Bridges

    • Needs ±3V3 for amplifiers