Description of System

The TSI board is partitioned into two sections, TSV (Tractive System Voltage) and GLV (Grounded Low Voltage). Isolators are used to pass signals between both sections while keeping them galvanically isolated.  The TSV part of the board communicates and passes signals to the pre-charge relay, the discharge relay, a bus bar current sensor, the motor controller and the motor itself. The GLV part of the board receives 24V from the GLV BOB and passes them to other systems such as dashboard, battery packs cooling, IMD and braking. The GLV section of the board is also responsible for the routing of the safety loop and its requisite signals.


2020-2021 Team Documents

TSI Rev. 6 Design


  • TSI Rev. 6 KiCAD Schematic (PDF) (Final Update: 4/28/21)
  • TSI Rev. 6 KiCAD PCB (PNG) (Final Update: 4/28/21)
  • TSI Rev. 6 KiCAD Project Download (Google Drive) (Final Update: 4/28/21)


  • TSI Rev. 6 Drive Mode FSM (PNG) (Last Updated: 4/14/21)
  • TSI Rev. 6 Firmware (GIT) (ZIP) (Last Updated: Spring 2021)


  • TSI Rev. 6 Working Documentation (PDF) (Last Updated: 4/28/21)
  • TSI Rev. 6 Test Plan v. 1.2 (PDF) (Last Updated: 5/3/21)
  • TSI Rev. 6 Errata (PDF) (Last Updated: 4/14/21)
  • TSI Rev. 6 Stadium Mill Drawing (PDF) (Last Updated: 5/10/21)
  • TSI Rev. 6 Stadium Mill Drawing (Inventor on Drive) (Last Updated: 5/10/21)

Additional Resources

  • CarMan GitHub (LINK)
  • TSI Design Archive (LINK)