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