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CSD95490Q5MC: Tcase Recommended Rating ?

Part Number: CSD95490Q5MC

Hi Team,

My customer is making the Thermal evaluation, 

We know we have shown the Tj Recommended Rating 125C in the datasheet, but how about the Tcase Recommended Rating ? 

Can we provide that or we have a general reply for this question ?



  • Hi Kai,

    There is no recommended rating for Tcase. However you can still use Tj recommendation as below mentioned:

    1. You can monitor TAO signal to get temperature really close to Tj, and check if it's within the datasheet spec.

    2. If you monitor the case top temperature using thermal cam, then you can back calculate the Tj based on power dissipation and "Psi_JT -  junction-to-top characterization parameter". Tj=Tcase+ Psi_JT * Ploss. Because the Psi-JT is very low (0.2C/W for CSD95490), in most scenarios the case temperature should be very close to junction temp as well.