Throttle the CPU speed on nano54415

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seulater
Posts: 445
Joined: Fri Apr 25, 2008 5:26 am

Throttle the CPU speed on nano54415

Post by seulater »

I recently designed a project in which I used the nano and the Wifi module. I placed the wifi module under the nano module to save space.
Currently the processor is running at 62.7c in my office, and it's not even in its enclosure yet.
This will be an outdoor application, and I am getting concerned about the temp.
Is there a way I can throttle the CPU speed down without jacking all the other peripheral timing up ?
rnixon
Posts: 833
Joined: Thu Apr 24, 2008 3:59 pm

Re: Throttle the CPU speed on nano54415

Post by rnixon »

That seems a lot higher than the temp measurements we did, but that was a while ago. I think it was in the neighborhood of 35-45, but I could be wrong. I wonder if it can have to do with what peripherals you are using. Just as a data point I might run it in the netburner dev board with something like the factory app just so compare. Maybe some of the connections on your board are sourcing or sinking a lot of current?
seulater
Posts: 445
Joined: Fri Apr 25, 2008 5:26 am

Re: Throttle the CPU speed on nano54415

Post by seulater »

At first I thought the same, so I put in a brand new module and it ran the same temp. I then took the module and put it in the kit and it runs a bit cooler @ 51.0 Deg. C. This does make sense that my board runs warmer as i mounted the WI-FI module directly under the nano module.
rnixon
Posts: 833
Joined: Thu Apr 24, 2008 3:59 pm

Re: Throttle the CPU speed on nano54415

Post by rnixon »

I don't have any experience on power reductions with this processor, but on most you are able to turn off various sections that you are not using to reduce power consumption, which should reduce heat as well. Just a thought.
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