TMS320DM368: DM368 gets very hot (70C)

alexanderk

Part Number: TMS320DM368

I have a product based on DM368 doing HD (1080p30, 1080i60) H.264 encoding. The DM368 chip is getting very hot (up to 70C at room ambient).

I estimate power consumption of DM368+DDR at about 2W. Is it normal? The PLLs are running at 668.25 and 432 MHz, which is within the specs.

The PCB that the DSP is located on is rather small (1x2 inch), so it doesn't help, but are those temperatures normal or there's something wrong with the settings?

Thanks.

over 5 years ago

0 BhavinKharadi over 5 years ago

TI__Genius 9020 points

Hi,

As a starting point, are you aware of the DM368 power apps document and accompanying spreadsheet to enable you to estimate power consumption of the device under your own use case conditions? This collateral is available in the DM368 product folder here:

http://www.ti.com/general/docs/litabsmultiplefilelist.tsp?literatureNumber=sprabb4a&keyMatch=tms320dm368&tisearch=Search-EN

After you populate the spreadsheet to reflect as closely as possible your own use case conditions, it will provide a high-level sanity check against the values you appear to be measuring on your own board.

Should you have the need for further detailed power discussions, please contact Path Partner Technology directly to contract with them for their consultation services. Path Partner’s contact information is:

Path Partner Technology (sales@pathpartnertech.com)

Regards,

Bhavin

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TMS320DM368: DM368 gets very hot (70C)