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DRA756: pmic for DRA

Shreenidhi Patil
Expert 4136 points
Part Number: DRA756
Other Parts Discussed in Thread: TPS659037, , TPS659039-Q1

Can TPS659037 PMIC be used for DRA756

 

This is not an automotive application

PMIC need not be Q1 qualified

 

  • 0
    TI__Mastermind 42515 points
    Hi Shreenidhi,

    I have forwarded your question to an expert for comment.

    Regards,
    Yordan
  • 0
    TI__Mastermind 20540 points
    Hi Shreenidhi,
    TI requires only the PMICs mentioned in the SoC data manual to be used (those that are tested and approved). That way TI is able to support customer projects.
    I'm sorry I can't answer your main question. I mean don't know for sure if there exist a real limitation (for example not enough power supplied or similar) though 37 PMIC looks similar to the 39-th.

    Regards,
    Stan
  • 0 in reply to Stanislav Stilyanov
    TI__Expert 4136 points
    Thank you Team ,
    i shall agree with your reply ,

    is it possible to please share the difference between the two parts ,
    We shall take a decision once we have clarity on the difference between the two parts..

    The volumes being high , small price difference will result in huge impact at my customer , hence we shall want to optimize the system

    This is for a very important opportunity
    Please let me know if any query
  • 0 in reply to Shreenidhi Patil
    TI__Expert 4136 points
    Hello Team any update on this
    My customer is following up on this
  • 0 in reply to Shreenidhi Patil
    TI__Genius 16410 points

    Hello Shreenidhi,

    From a device spec perspective, there are only two differences:

    1. TPS659037 offers LDO4, TPS659039-Q1 does not.

    2. TPS659037 is not automotive qualified, TPS659039-Q1 is.

    There are other OTP differences between the available versions of TPS659037 and TPS659039-Q1.  TPS6590378ZWSR is the same configuration is O9039A389IZWSRQ1 with the following changes:

    1. TPS6590378 uses an external crystal

    2. TPS6590378 has a shorter power-down sequence

    3. TPS6590378 adds LDO4, so that LDO3 + LDO4 are used to power the PHY domains.

    So if your DRA756 application is within the 0x89 capability (DSPEVE + GPU + IVA < 4A), then TPS6590378ZWR should work.

    There is a second TPS659037 configuration called TPS6590379ZWSR.  This configuration has a separate buck for each core rail, but uses LDO2 to power VDDS18V.  So if your application uses < 300mA on VDDS18V, then you could use TPS6590379ZWSR.

    Both of these configurations are described in the TPS659037 user's guide.  If your current requirements fall within these requirements, TPS659037 should work.  If not, then you may need to use TPS659039-Q1.

    Regards,
    Karl