TPS65951 replacing the TPS65930

Calum Mackinnon

Other Parts Discussed in Thread: TPS65930, DM3730, TPS65950, TPS65951, TPS65921

Currently we’re using TI’s DM3730CBP100 and the TPS65930A2ZCH, along with Micron’s MT29C4G48MAZAPAKQ-5 IT PoP memory. The CBP package of the DM3730 is a 0.4mm pitch part which causes the board design to be rather complex and expensive. Also, the TPS65930 doesn’t have enough output current to support the DM3730CBP100 at 1GHz so here’s what we’re thinking about doing:

Change to TPS65951A1ZGU

This looks like a relatively new power chip from TI that has some attractive features over the TPS65930, specifically support for 1GHz operation of the DM3730, additional LDO outputs, and a friendlier ULPI interface. Documentation for this part is pretty light right now, so getting more information about this part would be helpful. What’s the availability, lifetime, software compatibility, etc… Is there a PCB layout recommendation for this part?

Any help is appreciated.

Cheers

Calum

over 13 years ago

0 Calum Mackinnon over 13 years ago

Genius 4155 points

Is there an Orcad schematic symbol for the TSP65951 available?

0 Michael Brooks over 13 years ago in reply to Calum Mackinnon

TI__Intellectual 1790 points

Hi Calum,

The TPS6595x line is our standard PMICs for this processor (the TPS65950 is used on the EVM and Beagle xM). Have they seen they power selection guide for them DM37x:

http://www.ti.com/litv/pdf/slyt407

Note that the example image from that guide (and what we are using with the reference boards) is a TPS65950, these are quite similar devices (any reason they prefer the 51 over the 50?). A comparison of the two can be found here:

http://www.ti.com/litv/pdf/swca090

The best place to start for overall schematic considerations is always the schematic design checklist. This contains another 4 app notes about connecting a TPS65950 (again this can be used with the TPS65951) with the processor and a lot more advice on the schematic overall:

http://processors.wiki.ti.com/index.php/AM37x/DM37x_Schematic_Checklist

0 Roberto Cerati over 13 years ago in reply to Michael Brooks

Prodigy 130 points

I want to use a TPS65951 for a DM3730CUS100 (1GHz) and I read also SWCA096–February 2011:

it states "This application note is applicable for TPS65921 and TPS65950 devices."

I need to know if it is advised to use 22uF bulk capacitors also for TPS65951 for 1GHz support.

Is SWCA096 valid also for TPS65951 ?

Best Regards

Roberto Cerati

0 Roberto Cerati over 13 years ago in reply to Roberto Cerati

Prodigy 130 points

No news from any ti employee ?

Best Regards

0 Neeraj Shukla over 12 years ago in reply to Roberto Cerati

Prodigy 130 points

Hello!!

Currently we are using PMIC-TPS65951 instead of PMIC-TPS65950.

Are all technical documents of PMIC-TPS65950 are applicable to PMIC-TPS65951??

As i have reffered and TPS65950 technical docs earlier so Can i use PMIC-TPS65951 in my project?

Power management

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TPS65951 replacing the TPS65930