Tesla Model 3 Drive Unit PCB

Open Source logic board for the Tesla Model 3 rear drive unit. Based on the inverter designed by Johannes Heubner using FOC control.

m3 inverter replacement pcb

parts/ connections to salvage/ unsolder

the model 3 drive unit inverters feature a PCB with both HV and LV circuits, the gate drivers, and logic. thus a simple replacement brain board is not possible. canbus control is complicated and requires use of tesla's diagnostics software for inverter pairing. this is a legal greyzone and not a fully opensource option. Instead a full fledged replacement board with gate drivers was designed to allow full lobotomization of elon, thus gaining full opensource control of the model 3/y drive units!

hardware: https://github.com/damienmaguire/Tesla-Model-3-Drive-Unit

software: https://github.com/davefiddes/stm32-sine

boards for purchase: https://www.evbmw.com/index.php/evbmw-webshop/tesla-boards/tesla-model-3-du-beta

parts needed to be fitted:

-current sensors: MLX91209LVA-CAA-002-SP (can be sourced from original board)

-gate drivers: STGAP1BSTR (can be sourced from original board)

-temp sensors: EPCOS : B57164K0473J000

-power transformer: VGT22EPC-200S6A12 (can be sourced from original board)

-30 pin connector + pins are a private stocked part, so must be salvaged from the original board

-30 pin mating connector: Sumitomo Original 6189-6987 61896987 https://www.aliexpress.com/item/1005005920568514.html

-11x torx T20 screws holding the board onto the case

-3x T10 securing the current sensor trim to the pcb

OR

- 2x T10 screws holding the pryofuse and current sensor trim

lv 30 pin connector pinout

Installation Process

See the Tesla Model 3 Drive Unit PCB Install page for a detailed guide on how to install and commission the PCB.

Firmware Parameters

The [stm32-sine M3_DU] firmware has a number of additional parameters and spot values over the standard firmware. The Tesla Model 3 Drive Unit PCB Parameters page describes these.