Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Power Module Rev D Fixes #49

Open
7 tasks done
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
Assignees
@nealjack

Comments

@nealjack
Copy link
Member

nealjack commented Mar 22, 2017 •
edited

  • 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
Copy link
Member

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
@nealjack
Copy link
Member Author

nealjack commented Mar 22, 2017 •
edited

  • 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
Copy link
Member

brghena commented Apr 7, 2017

  • Think about Load Switches on a per module basis

@brghena
Copy link
Member

brghena commented Oct 10, 2017

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

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees

@nealjack nealjack

Labels
None yet
Projects
None yet
Milestone
No milestone
Development

No branches or pull requests
2 participants
@brghena @nealjack