Location of Case Temperature sensor

moniruzzaman

I am working with the XM3 inverter and need information on the location of the case temperature sensor.

Forum_Moderator

Thank you for your post, it has been approved and we will respond as soon as possible.

AustinC

Hi moniruzzaman,

The case temperature sensor, RT83, is located on the control board:

Schematic:

Layout:

Best Regards,

Austin C.

moniruzzaman

I initially thought the case temperature sensor was measuring the switch module's case temperature, which is connected to the cold plate. However, it seems it actually measures the control board temperature. Is that correct?

AustinC

moniruzzaman,

Yes, there is also a temperature sensor in each power module measuring the case temperature as you described.

Wolfspeed's Thermal Characterization Methods and Applications Application Note describes the location of the temperature sensor in the XM3 power module: https://assets.wolfspeed.com/uploads/2024/02/Wolfspeed_PRD-08376_Thermal_Characterization_Methods_and_Applications_Application_Note.pdf

The temperatures can be read in the user interface:

Austin C.