Tesla Model 3 Drive Inverter

5 years ago
15

This is a quick look a the guts of the RWD Model 3 inverter PCB. Impressive design!

The inverter is part of the drive unit and it takes up to 500 amps of 400 volt DC power from the battery and makes 3-phase AC power for the motor.

Here is the list of major components:
SiC FETs: ST GK026 (24)
Gate Drivers: STGAP1AS (6)
MCU: TI TMS320F28377DPTPQ
Resolver Amp: ON Semi TCA0372BDW
Temp Amp: TI LMV844
EEPROM: Microchip 25LC256E
CAN Transceiver: TI SN65HVD1040A (2)
LIN Transceiver: NXP TJA1021
HV Sense: Broadcom ACPL-C87BT-000E
DC-DC Power: Infineon TLF35584QVVS2
DC-DC Transformer: TDK VGT22EPC-222S6A12

Here is an image showing how the SiC MOSFETs are mounted to the coldplate and how they are connected:
https://ibb.co/dfvktz

Here is the internal structure of one:
https://ibb.co/cphemK

Impressive BOM compared to past designs!

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