Introduction

• Who

  • Reserved for Kevin Li co-op student

  • Robert Tang doing the engineering

  • high level architecture defined by Daniel Puratich

• What

  • Buck Converter

    • https://uwarg-docs.atlassian.net/wiki/spaces/EL/pages/1931313166/Buck+Converters?search_id=6453daaa-edfa-4fdd-976d-88b4a78a92d9

  • 6S LiHv input

    • 27V absolute max on LiHv

  • 5V output voltage

  • rpp

    • https://uwarg-docs.atlassian.net/wiki/spaces/EL/pages/2272002049/Reverse+Polarity+Protection+Circuits?search_id=6ab748c2-3384-479f-80f5-7a7084f80fb7

    • Kind of nice because autonomy software people like to use this hardware

  • 5 A output current

  • 30.5x30.5 mount pattern

    • https://uwarg-docs.atlassian.net/wiki/spaces/EL/pages/2189197330/Mounting+Hole+Patern+Specifications?search_id=79edeffb-b719-446b-b648-4bee2c36c2ab

  • usb-c (for rpi) and jst (for pixhawk) output conns

    • https://uwarg-docs.atlassian.net/wiki/spaces/EL/pages/2312044593/Pixhawk+Electrical+Connector+Standards?search_id=fc8cc27f-d497-4158-ba61-16ea91379e5a

    • USB-C connects to the raspberry pi easily, can copy circuit from 12V->5V @ 5A Buck Converter Board

    • Pixhawk standard connector for POWERx style port so this can be used as a redundant supply

  • xt30 input conn or just solderpads (both in library already)

• Why

  • 12V->5V @ 5A Buck Converter Board is intended for lower input voltages

  • Powering the Raspberry Pi 5 for https://uwarg-docs.atlassian.net/wiki/spaces/ARCHS22/pages/2556133415/Fixed+Wing+2025?search_id=772ded46-862b-41b6-8115-093586821d0d if we decide we want to mount the RPi into this system

    • Currently there is no plan to do this but it is nice

  • Redundant Pixhawk power supply for https://uwarg-docs.atlassian.net/wiki/spaces/ARCHS22/pages/2556133415/Fixed+Wing+2025?search_id=772ded46-862b-41b6-8115-093586821d0d

Engineering

Robert Tang to fill out when the time comes