Termal Impedance Calculations


Joined Aug 21, 2008
You can do it with just the schematic and the thermal camera, and that is what you were asked to do. BobaMosfet is right, you can check your answer with the datasheet.


Joined Mar 14, 2008
Hi everyone. How can solve this problem ?
Yes, we can.
But homework is for you do solve the problem.
But we will help.

For the thermal impedance to air, you need to do the measurement, since it depends upon how the device is mounted and what it is mounted on.
Do you know what the thermal impedance is, and how it would be calculated?
Do you know how to calculate the power dissipation of the regulator?

If you can adjust the value of Vin. then you can determine the dropout voltage.
Otherwise you need to look at the data sheet.
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