• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 63 subscribers
  • Views 88 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPSM82821: 1.8V ,1A Switch Regulator -AM6254 Suggestion

AJAY S
Prodigy 150 points
Part Number: TPSM82821

Tool/software:

Hi there,

I'm looking for less power dissipation ,smaller form factor switching regulator 1.8V, 1A.I have selected below parts from TI.

Part 1: TPSM828212SILR

Part 2: TPS62821DLCR

End processor : AM6254ATCGGAALW , Load : 1.8V, 0.7A

Kindly ,suggest which one is best for my application.

Regards,

Ajay S

  • 0
    TI__Mastermind 22490 points

    Hello Ajay,

    thanks for reaching out in E2E.

    The two parts you mentioned are very similar, the main difference is that part 1 (TPSM828212SILR) is a module, which is including the inductor in the package and it is also a fixed VOUT device, whereas the part 2 (TPS62821DLCR) requires a separate inductor and a FB voltage divider to setup the VOUT value. That means part 1 requires less space on the board (less extra components). With part 2 you would be able to squeeze out a bit more efficiency with an external inductor which has a very low DCR (part 1: 91% vs. part 2: 95% at VIN=3.3V, VOUT=1.8V and IOUT=0.7A). It is up to you what is more important for your design.

    The TPS6282518DMQ would be a comparable device to part 2 but smaller (1.5 x 1.5 mm vs. 2 x 1.5 mm) and with fixed VOUT of 1.8V. The required external inductor (with the chance of 95% efficiency) remains but the FB voltage divider would be saved on the board space in addition to the smaller device. So maybe it would be a suitable compromise for your application. The fact that it is a 2A device has no disadvantage. Actually the application note "Discrete Power Solution for AM62x", which is published on the AM625 product web-page, is also suggesting the TPS6282518DMQ.

    Best regards,

    Andreas.