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Power Module Rev D Fixes #49

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nealjack opened this issue Mar 22, 2017 · 4 comments
Open
7 tasks done

Power Module Rev D Fixes #49

nealjack opened this issue Mar 22, 2017 · 4 comments
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@nealjack

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@nealjack
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nealjack commented Mar 22, 2017 •
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  • U19 pin 1 indicator
  • Better precision resistors for solar charger divider (Input and output regulation)
  • More space monitors and sense resistors
  • More space around charger/regulators
  • U27 wrong package
  • D3 wrong package
  • Add reset button on watchdog
@nealjack nealjack self-assigned this Mar 22, 2017
@nealjack nealjack changed the title Power Module Rev C issues Power Module Rev D Fixes Mar 22, 2017
@brghena
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brghena commented Mar 22, 2017

Before you spin Rev D, it would be good to check if the watchdog firing actually turns off and back on the power rails correctly. (Probably a deadbugged chip and some wires)

@nealjack nealjack reopened this Mar 22, 2017
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nealjack commented Mar 22, 2017 •
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  • VSOL- must be connected to VBAT-. Watchdog only shuts off battery connection to ground, solar panel could still power device. Change charger GND connections to VSOL-/VBAT-.
  • Battery monitor sense resistor needs to be closer and have better traces to pins
  • R53 and R13 swap
  • LTC2943 requires 3.6+V, so backplane/controller gauge won't work

@brghena
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brghena commented Apr 7, 2017

  • Think about Load Switches on a per module basis

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brghena commented Oct 10, 2017

  • WHY IS THE RESET BUTTON SO HARD TO PRESS??

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