2020-06-11 PCB Review notes

Date

Jun 11, 2020

Participants

  • @Liam Hawkins

  • @Aashmika Mali

  • @Chenao Yuan

  • @Frank Yan

  • @James Jo

  • @Josh Rong

  • @Nita E

  • @Micah Black

Goals

Review progress on current projects.

Action items

Supplemental BPS

Reverse relay coil suppression diode
Simulate the circuit
Larger relay to switch output (Up to 9 A load)
Switch to microfit connectors
Add an LDO for the reference voltage

Steering

Move decoupling capacitors closer to the ICs
Rearrange Schmitt triggers/signals to reduce the number of traces on the bottom layer

AFE

Tent vias
Label each pin on the connectors (especially voltage taps)

Charger Interface

Add keepout layer around board
Use a trace for 12 V instead of the long polygon
Put the capacitors before the crystal for U1
Replace SPI testpoints with a 5 pin header
Move Q1 closer to U5
Rotate C20 180 degrees
Move trace from P7 to P3 to top layer
Move LED3 to not cut the relay 12 V polygon