Page Comparison

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• Input

  • Overvoltage protection up to 60V

  • reverse polarity protection up to -60V

• Output

  • Overcurrent protection: no component damage (operation not required though) if excessive current is drawn. auto retry

    • In theory the IC already supports this though there is some doubt as per RCA: Fried Boards

  • Overvoltage protection: no component damage to the board to 60V

    • so:

      • either put 2 IC’s, one at input one at output

      • or

        • implement something else for overcurrent and over voltage

  • Dropping this design requirement in favor of saving time

• Sundry Changes

  • layout match 30x30mm Mounting Hole Specifications

  • A single power indicator LED

• Objectives

  • high efficiency

  • protect for alternative (unintended) ground paths (im forcing high side switching with this requirement, but for good reason, we often short things out to GND accidentally).

  • minimize cost, component count, complexity, and board space

...

• Ordering

  • we might wait for other boards to order a bunch at a time

  • board

  • components

• Testing

  • writeup test plans first

  • do protections work

  • does board work

• Further validation gets pretty grindy imo and and we can skip

Simulations

Image Added

simulated input caps on LTSpice to prevent problems like https://uwarg-docs.atlassian.net/wiki/spaces/EL/pages/2539980265/RCA%3A+Fried+Boards?search_id=ba9bebac-b411-4770-b846-9fd53d7e1682

Test Plan

Protections:

• test if RPP works

  • plug in battery opposite way

• test if overvoltage works

  • supply with higher voltage than its operating range

    • 80V

...