Obi110 running real hot hot hot...
QBZappy:
Quote from: GregoryZ on September 26, 2012, 01:03:25 pm
::) Where do you find the time?!! ;D
Google is my friend.
BTW you never told us your dog's name. It looks well fed. :)
GregoryZ:
Quote from: QBZappy on September 26, 2012, 01:10:35 pm
BTW you never told us your dog's name. It looks well fed. :)
Her name is Kasey. Thanks for asking.
She is 5yrs old now, and about 70lbs. Choc. Lab/Pit Mix. And the Love of My Life!
Now back to the regularly scheduled Postings.... :)
-G
sailing:
70C on an IC probably isn't a problem but lets look at this from an engineering standpoint. I don't know what the ICs are that are running hot so unless you want to list them here, I will make some assumptions. Let's assume the junction temperature (the die itself) will run 10C hotter then the case which you are measuring. Many ICs have junction temperature ratings of 85C, 100C and 125C maximum. Let's assume these ICs can operate to 125C. If they could only operate to 85C, there would be a lot of complaints about Obi failures after a few years. A little math; 80/125=0.64 or 64% of maximum junction temperature. That isn't a bad derating. 70C is hot to the touch but the ICs will operate just fine at that temperature.
But if the max junction is 100C, then 85% is a bit high. If there are owners out there who see failures after 3 to 5 years, then yes, the ICs are running too warm.
Your adding the heatsinks will increase the life of the ICs in any case.
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