The Designer's Guide Community
Forum
Welcome, Guest. Please Login or Register. Please follow the Forum guidelines.
Oct 31st, 2024, 5:09am
Pages: 1
Send Topic Print
Joule Heating Effect of RMS Current (Read 2148 times)
neoflash
Community Fellow
*****
Offline

Mixed-Signal
Designer

Posts: 397

Joule Heating Effect of RMS Current
Aug 04th, 2008, 8:50am
 
I come up with a problem of high RMS current with zero DC average.

TSMC provided a rule of RMS current limit. The limit is quantified with consideration of temperature rise of Joule heating.

My question is that what's the consequence of Joule heating? What if I allow 30c Joule heating with a 125c junction temperature?

Thanks,
Neo
Back to top
 
 
View Profile   IP Logged
HdrChopper
Community Fellow
*****
Offline



Posts: 493

Re: Joule Heating Effect of RMS Current
Reply #1 - Aug 8th, 2008, 12:39pm
 
Hi Neoflash,

I guess there is some dependency on the type of process you´re using, but typically the max allowable and reliable junction temperature (infinite time) for silicon is 165C. Higher temperatures might be allowed but assuming shorter times as such temp is increased.
So, 30C over 125C should not be a problem

Regards
Tosei
Back to top
 
 

Keep it simple
View Profile   IP Logged
Pages: 1
Send Topic Print
Copyright 2002-2024 Designer’s Guide Consulting, Inc. Designer’s Guide® is a registered trademark of Designer’s Guide Consulting, Inc. All rights reserved. Send comments or questions to editor@designers-guide.org. Consider submitting a paper or model.