Heat: Infrared Thermal Testing

Discussions about the current Parallella hardware.

Heat: Infrared Thermal Testing

Postby federico » Sat Sep 07, 2013 4:25 pm

Hello Community,
I have an infrared camera on hand, so I thought I would put it to good use looking at where the heat is coming from.

These are images from a Gen-0 board. The general availability board (Gen-1) has significant improvements in power dissipation, so it will be nice to have a comparison here, it should be quite impressive a difference! So, if you don't have a board on hand, don't freak out - this is not the general availability board.

Without further ado - here it is.

There are two sets of images - the first, with the Parallela with no cooling whatsoever, the maximum temperature reached is around 200F around one of the power supply chips.

Parallella Gen-0 - no fan.jpg
No fan - Gen-0 board
Parallella Gen-0 - no fan.jpg (39.43 KiB) Viewed 1438 times

Parallella Gen-0 - no fan (2).jpg
Parallella Gen-0 - no fan
Parallella Gen-0 - no fan (2).jpg (37.69 KiB) Viewed 1438 times


The entire board acts like a heat sink with the chip casing of the gen-0, so heat is spreading everywhere. To see where the power is coming from, we look at the board with the minimal cooling provided by a desk fan.

Parallella Gen-0 - with fan.jpg
With fan - Gen-0 board
Parallella Gen-0 - with fan.jpg (32.38 KiB) Viewed 1438 times


With the fan, we can see that the power supply chips are clearly the worst offenders (they peak at 157F even cooled), while the Zync and Epiphany chips stay around a cool 115F, which is what we'd expect once the heat dissipation improvements are rolled out. There is not a lot of heat going into the board already, the issue is that it accumulates.

Just wanted to share the pictures, hope it helps. Rock on!

-Federico
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Re: Heat: Infrared Thermal Testing

Postby federico » Sat Sep 07, 2013 4:29 pm

One more shot with the fan on - showing the peak at the power supply chip.

Parallella Gen-0 - with fan (3).jpg
With fan - Gen-0 board
Parallella Gen-0 - with fan (3).jpg (34.91 KiB) Viewed 1437 times


And the Epiphany

Parallella Gen-0 - with fan (4).jpg
With fan - Gen-0 board
Parallella Gen-0 - with fan (4).jpg (35.5 KiB) Viewed 1437 times
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Re: Heat: Infrared Thermal Testing

Postby tnt » Sat Sep 07, 2013 6:06 pm

Very nice shots !
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Re: Heat: Infrared Thermal Testing

Postby ysapir » Sat Sep 07, 2013 6:31 pm

Great post.
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Re: Heat: Infrared Thermal Testing

Postby LamsonNguyen » Sat Sep 07, 2013 10:36 pm

Sweet.
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Re: Heat: Infrared Thermal Testing

Postby aolofsson » Sun Sep 08, 2013 1:09 am

federico wrote:Just wanted to share the pictures, hope it helps. Rock on!
-Federico


Really great stuff! Powered up the gen1 Friday morning and things look good so far!

btw. Fahrenheit..seriously? You almost gave me a heart attack. :D

Andreas
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Re: Heat: Infrared Thermal Testing

Postby federico » Sun Sep 08, 2013 4:09 am

aolofsson wrote:btw. Fahrenheit..seriously? You almost gave me a heart attack.


Haha - sorry :)

Best -F
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