Tesla Model 3 Rear Drive Unit: Difference between revisions

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Add in as may general details of the Tesla M3 drive unit as I can find from the hacking thread and linked videos.
→Connectors and Pinouts: Add some details from my wiring harness
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|Inverter connector
|Inverter connector
|30
|30
|?
|Tesla 1108960-00-8 (proprietary?)
|-
|-
|?
|?
|Rotor Shaft Resolver
|Rotor Shaft Resolver
|8
|10 (8 connected)
|?
|TE Connectivity 1-2282337-1
|-
|-
|?
|?
|Oil Pump
|Oil Pump
|3
|3
|?
|TE Connectivity 1-1718644-1
|}
|}


Revision as of 17:45, 17 September 2021

External Documentation

Tesla Model 3 Rear Drive Unit Hacking (forum thread)

https://github.com/damienmaguire/Tesla-Model-3-Drive-Unit (Hardware and reverse engineering details)

https://github.com/jsphuebner/stm32-sine/tree/tesla-m3-gate-driver (STM32 "modboard" firmware dev. branch)

Part Numbers

Part Number Description Max Current Cars
1120970-00-F (ASY,M3,3DU,REAR,IGBT) - original RWD and/or "binned" Perf 800A Model 3
1120980-00-G (ASY,M3,REAR 3DU,MOSFET,GLOBAL) - early AWD motor 800A Model 3 / Model Y
1120990-00-G (ASY,M3,REAR,MOSFET-LC,GLOBAL) - newer AWD motor 600A Model 3 / Model Y
1521365-00-B (ASY, REMAN, 3DU-Rear 800 MOSFET) - Remanufactured 1120980-00-G 800A Model 3 / Model Y
1521487-00-A (ASY, REMAN, 3DU-REAR 630 MOSFET) - Remanufactured 1120990-00-G 600A Model 3 / Model Y

Details from https://www.reddit.com/r/teslamotors/comments/ioat3d/rear_motor_efficiency_improvements_980_vs_990/.

Connectors and Pinouts

Label Description Pins Compatible Plugs
? Inverter connector 30 Tesla 1108960-00-8 (proprietary?)
? Rotor Shaft Resolver 10 (8 connected) TE Connectivity 1-2282337-1
? Oil Pump 3 TE Connectivity 1-1718644-1

Mechanical Specification

Max rotor speed: 18,447 rpm

Input shaft gear: 31 teeth

Counter shaft input: 81 teeth

Counter shaft output: 24 teeth

Ring gear: 83 teeth

Gearbox Ratio: (81/31) * (83/24) = 9.036

Details from https://www.youtube.com/watch?v=SRUrB7ruh-8.

Inverter Components

Manufacturer Part No Description Quantity Datasheet
ST ST GK026 SiC FET drive transistors 24 ?
ST STGAP1AS Gate Drivers 6 https://www.st.com/en/power-management/stgap1as.html
TI TMS320F28377DPTPQ C2000 Delfino MCU 1 TMS320F2837xD Dual-Core Microcontrollers Datasheet

TMS320F2837xD Dual-Core Microcontrollers Technical Reference Manual

On Semi TCA0372BDW Resolver amplifier 1 https://www.onsemi.com/pdf/datasheet/tca0372-d.pdf
TI LMV844 Temperature sensor amplifier 1 https://www.ti.com/lit/gpn/lmv844
Microchip 25LC256E EEPROM 1 http://ww1.microchip.com/downloads/en/DeviceDoc/20005715A.pdf
TI SN65HVD1040A CAN Transceiver 2 https://www.ti.com/lit/ds/symlink/sn65hvd1040a-q1.pdf
NXP TJA1021 LIN Transceiver 1 https://www.nxp.com/docs/en/data-sheet/TJA1021.pdf
Broadcom ACPL-C87BT-000E DC HV sense 1 https://docs.broadcom.com/docs/AV02-3564EN
Infineon TLF35584QVVS2 DC-DC Power and system watchdog 1 https://uk.farnell.com/infineon/tlf35584qvvs1xuma2/multi-volt-pwr-supply-ic-40-to/dp/3155085
TDK VGT22EPC-222S6A12 DC-DC Transformer (gate drive?) 1 https://product.tdk.com/en/search/transformer/transformer/gate-drive/info?part_no=VGT22EPC-200S6A12

Details from https://www.youtube.com/watch?v=l6dV2re3rtM.

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