Layout recommendations for AM335x (ZCZ)

reto hermann

Dear support team,

Are there any layout recommendations or a reference design regarding the optimization of the thermal resistance between the AM335x and the PCB ? In other words: What do we have to consider, when doing the PCB layout in order to get as much heat as possible away from the processor to the PCB planes ? In our current design the processor heats up to approx. 50°C and we don’t know whether this is because of a poor layout or if there is another issue.

Best regards
Reto

over 13 years ago

0 Biser Gatchev-XID over 13 years ago

TI__Guru**** 393215 points

Hi Reto,

There are board design files for practically all reference designs:

http://processors.wiki.ti.com/index.php/AM335x_General_Purpose_EVM_Board_Design_Files

http://processors.wiki.ti.com/index.php/AM335x_StarterKit_Board_Design_Files

http://processors.wiki.ti.com/index.php/AM335x_Industrial_Communications_Engine_Board_Design_Files

http://processors.wiki.ti.com/index.php/AM335x_IndustrialDevelopmentKit_EVM_Board_Design_Files

http://beagleboard.org/hardware/design

You will find PCB files in Cadence Allegro format for most of these.

0 Frank Van Hooft1 over 13 years ago

Expert 1120 points

On our board we've found an important heat source is the PMIC. Using a thermal camera at power-on we can actually see a plume of heat start at the PMIC and then fan out across the board, heating up nearby components including the processor. Something like that might be a contributor to your processor temperature.

0 AnBer over 12 years ago in reply to Frank Van Hooft1

TI__Mastermind 30645 points

Also specifically about thermal consideration you can look at:
http://processors.wiki.ti.com/index.php/AM335x_Thermal_Considerations

Anthony

0 Umameheswara Rao Maddula over 10 years ago in reply to AnBer

Prodigy 70 points

HI,

We are using AM335X processor in our customized design. We found that our processor is getting heat up to 50 degree C. I couldn't able to find what are the reasons behind this.

Please help me how to solve this heat issue.

Thanks

Uma

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Layout recommendations for AM335x (ZCZ)