• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 2 answers
  • Subscribers 62 subscribers
  • Views 275 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

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.

TPS6521825: Combined mode for higher output current

Bettina Wyss
Prodigy 50 points
Part Number: TPS6521825
Other Parts Discussed in Thread: TIDA-050038, LP8733, TPS6521815, TPS650861

Hi, I wonder if one can combine e.g. DCDC1 and DCDC2 of TPS6521825 to one rail to get higher output current. 

Thank you

Betty 

  • 0
    TI__Mastermind 30280 points

    Betty,

    Unfortunately no, DCDC1/2 on the TPS6521825 can be combined to get higher current.

    What do you intend to power with the TPS6521825? This version of the device was created specifically for i.MX 8M Mini/Nano and the TPS6521825 is used in conjunction with the LP8733 (the LP873347 variant, specifically) to provide power to the processor, as defined in TIDA-050038.

  • 0 in reply to Brian Berner
    Prodigy 50 points

    Hi Brian

    Sorry, I meant TPS6521815 which I found on ti.com/diypmics, but I fear there it is the same. I want to power a FoFi FPGA and some periphery around it. 

    Regards, 

    Betty 

  • 0 in reply to Bettina Wyss
    TI__Mastermind 30280 points

    Betty,

    Yes, the response is the same for TPS6521815: None of the power rails can be combined.

    Did you also see the TPS650861 when you were looking at the DIY PMICs? This device has 3 buck controllers and 3 buck converters, as well as some LDOs and load switches, and it is fully programmable by OTP memory, which makes the TPS650861 the best candidate for powering complex FPGA designs with higher power requirements. It might be a little overkill, but un-used buck controllers (BUCK2 un-used, for example) are not very wasteful because the external FETs do not need to be populated.