Junction to Heatsink Thermal Resistance for CAB011M12FM3

Prem

Hi,

We are using CAB011M12FM3 module in our Energy storage application.

We do see the Junction to Heatsink thermal resistance per MOSFET is 0.553°C/W in datasheet.

Please answer below questions

1) The Heatsink means here the Copper plate in the bottom side of the module or the external heatsink?

2) 0.553°C/W includes the thermal resistance if TIM material used between module and external heatsink?

3) How to calculate the temperature sensed by the NTC inside the module? Below method is correct?

T.j = 140°C - Junction temperature

Power loss per MOSFET = 50W

T.h = 140-(50*0.553) = 112.35°C

NTC Temperature = T.h

Please verify this method