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Is the TPS65217A appropriate choice for general purpose?

Conor Orourke
Prodigy 190 points
Other Parts Discussed in Thread: TPS65023, TPS65217

Hi all.

I have a concern about a design decision (made higher up!). In essence this project is a classic handheld processor system with a LiIon battery and the requisite power management circuitry. There is a requirement for battery charging and a few regulated voltages - 3.3V buck or ldo, 12V boost, 5V etc. There's a requirement to power them off too - eg: shut off the 12 V supply.

If it was a case of a full processor design a TPS65217 seems fine - it's the choice on the beaglebone. However I'm using a System on Module - a MityDSP unit with a TPS65023 PMIC on it already. In which case I'm failing to see how another TPS module helps me as TI make numerous other Power ICs and regulators that might suit better. I'm having a bit of trouble finding a reason though.,,

Is there a valid reason to pick the TPS for general purpose power management like this just because it has a few LDOs and a battery charger on it or would I be better off picking something else?

Sorry, it's a very vague question but the TPS65217 seems designed for a single purpose - to control a OMAP or Sitara processor.

Conor.

 

  • 0
    TI__Expert 4525 points

    TPS65217x is meant to power Sitara processors.  You are correct.  If you can fit it in to some other application, that is fine.  However, we can not support any new sequences or output voltages.  Only the ones that are already available with A,B,C versions. 

  • 0 in reply to Stephen Nortman
    Prodigy 190 points

    Ok, thanks Stephen. The TPS is meant to directly power processors so it's not a general purpose solution. I guess silicon has become way more specialised - that's why TI have such a large range of choices. (Thus I wouldn't expect new sequences - it's not a microcontroller! ). The tricky bit is making the appropriate choice, especially since the TPS does most of what I need but overlaps in functionality (and so may not be maximally cost efficient).

    Time to browse the TI catalogs!