Thermal Resistance RthCH

luke13

Hello Wolfspeed Technicians,

my company bought a CRD200DA12E-XM3 inverter and I want to calculate the maximum junction temperature for the application.

I already got the values for the RthJC and the RthHF (Heatsink to Coolant).

Now I was wondering abouth the thermal resistance between the case and the heatsink. My approach was to take the area of a CAB400M12XM3 and the thickness of 6 mil from the CPWR-AN29 and calculate the resistance with the GreyIce 4060 TIM ( 6 W/(m*K) ).

Resulting in a thermal resistance of 0.006 K/W.

Does the value make sense?

Thanks for your suggestions.

Best regards Lukas