openinverter forum

Romale wrote: ↑Mon Aug 05, 2024 1:01 pm 2) no, I have not found how to use desat

IGBT driver /FAULT = desat output is open collector type and output of all six driver is connected parallel to one signal and on IGBT module there is pull-up to 5v. Same applies to /UVLO signal.

Now looking at your pinmap these pins are not "5V", but instead will read 5V because of pull-ups. Here what I have found:
pin 4 = /FAULT
pin 6 = /UVLO

I'm planning of doing the same modification and move to OI control. Would it be possible for you to share parameters you currently use with this inverter&motor setup?

I know that pin 4 = desat. however, if I connect it to the O.I. board, I very often have an overcurrent error, so I stopped connecting it.
these settings will give you very decent speed and power.
to power the accelerator, I use 3.3 volts available on the standard outlander board (there are signed holes where you can solder your wire), this solves the problem of the maximum value of pot1 for the accelerator on the hall effect.

Also, output 8 and output 10 and output 12 are temperature sensors of power transistors. but the v3 board does not perceive them adequately with any customization options.

Strange, maybe noise on fault signal to OI board triggers it? According to datasheet:
"When the voltage on the DESAT terminal exceeds 7 volts, the output voltage (VOUT) to IGBT gate goes to Hi-Z state and the SSD/CLAMP output is slowly lowered. FAULT output goes low, notifying the microcontroller of the fault condition."

Gate driver will stop switching igbt in case of desat, no matter even if microcontroller keeps on pwm'ing. After tdesat reset timeout driver will continue operation.
This is how I read this, desat will cause igbt protection anyway and its not super important to use fault signal. But igbt protection is equal to active fault output.

OutlanderTry wrote: ↑Tue Jan 13, 2026 2:36 am Hello, thank you.
There's no rush; I don't plan on using the circuit board.
I'm learning and appreciate things like what you've shared. .

I did also build another Teensy 4.1 VCU board on the basis of aot93 design. This allows me now to take control of 3 CAN bus lines and use them.
I really like the idea of FSM code where you only occupy one state at a time. You are either in ready state, you are in neutral, drive or reverse, you are charging or you can be in error state. But not in two states at the same time. This simplifies code design greatly. If i am driving then i dont need my charger functions... or if i am charging then all of throttle pedal functions and torque conversioin are not needed.
This frees up a lot of things in code, CAN mailboxes and timers on one side...

Take a look here....
https://evmeganetech.wordpress.com/2025 ... velopment/
https://github.com/arber333/TeensyVCU

I think the same FSM lessons can be aplied to ESP32 except you need to have I2C analog converter because ESP32 sucks at AD.

Has anyone found oem wiring harness for rear inverter? Tried to find part number without success yet. Yes, there is 3D print option, just would be cool to find correct wiring harness part number to see if its possible to find it.. and most likely only cut inverter data connector from it

From the motor to the inverter, or from the inverter to the car ECU? The connection to the ECU is pretty simple - I just have a made up one, it's just CAN lines and 12v+ if I recall correctly.

The connection from the inverter to the motor is a bit more involved. Both my motors came with the control cable. Here is a photo of the tag on one of the cables - perhaps you can extract a part number out of it?

Looking for wiring harness between inverter and car. That resolver cable part number is 8556A131.

Yes, connection to inverter is simple, still looking nice and water proof oem connector. Sometimes its possible to find connector with inverter, but I have few spare rear inverters already

Just wanted to drop this here, found on facebook, posted by sdobbie, maybe may come useful for someone in the future
Possible search terms- Mitsubishi Outlander Rear drive unit inverter IGBT MBB600TV6A power stage half bridge Meiden N62P30851

Here is video by Shaun, that's the front inverter, my bad

Following up on the above post here is a nice video from Shaun