DAC1220EVM: Thermal Information

Scott Feyka

Part Number: DAC1220EVM

Does anyone have any thermal data? I'm looking for the thermal resistance from the junction to the bottom of the case (C/W) and from the junction to the top of the case (C/W) for additional heat sinking.

over 3 years ago

0 Joseph Wu over 3 years ago

TI__Guru* 97465 points

Scott,

At this point, the only value that we have available is the Theta JA for the device. This junction to ambient thermal resistance is 200°C/W and is shown on page 2 of the datasheet.

If you need this, I can check to see if the thermal modelling group can generate the Theta JC and Theta JB numbers for this device. It may take two weeks to generate the values from a thermal model.

Again, post back if you want to request this.

Joseph Wu

0 Scott Feyka over 3 years ago in reply to Joseph Wu

Prodigy 20 points

yes, I want this request. 2 weeks is acceptable. Keep me posted

0 Joseph Wu over 3 years ago in reply to Scott Feyka

TI__Guru* 97465 points

Scott,

I'll put in the request and I should be notified when it's done. I'll post back with values.

Joseph Wu

0 Joseph Wu over 3 years ago in reply to Joseph Wu

TI__Guru* 97465 points

Scott,

I just wanted to update you that they haven't completed this yet. However, I do expect that this will be completed soon.

Joseph Wu

0 Joseph Wu over 3 years ago in reply to Joseph Wu

TI__Guru* 97465 points

Scott,

Sorry this took so long, but here are the results:

Theta JA-High K (standard datasheet value) 90.0
Theta JC, top (standard datasheet value) 38.0
Theta JB (standard datasheet value) 33.3
Psi JT (standard datasheet value) 4.1
Psi JB (standard datasheet value) 32.8
Theta JC, bottom (standard datasheet value) n/a

I believe that because this device does not have a thermal pad underneath the device, the Theta JC, bottom is not reported.

Joseph Wu

0 Scott Feyka over 3 years ago in reply to Joseph Wu

Prodigy 20 points

I think you got it all! Thank you very much

Data converters

Data converters forum

DAC1220EVM: Thermal Information