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TPS566238: Design query & suggestion

Saurabh Sinha
Prodigy 30 points
Part Number: TPS566238
Other Parts Discussed in Thread: BQ25895, , TPS56C231, TPS568231

Tool/software:

Q1. I am designing a battery charging solution (using bq25895) for my board. The MCU and other onboard ICs require 3.3V for their
operations. I am using TPS566238, which takes Vin from VSYS of BQ25895 and provides 3.3V/2A at the output. Since my
current requirement is 1.5A MAX, is there a better replacement for TPS566238?

Q3. How trustworthy are the WEBENCH simulations?

  • 0
    TI__Genius 11435 points

    Hello,

    • TPS566238 will work for 3.3vout and 1.5/ 2A max. It depends what are your other requirements. If it is simple operation such as the TPS566238 with specific frequency and Vin/Vout and no extra requirements, it will work no issues. We do also have Low Current devices which have 2A or 3A max. These devices are more tailored to lower currents, but TPS566238 should work here.

    • Webench uses previously taken data along with equation calculations to best simulate what we would typically see on the bench. The bench results are the most accurate, but Webench is close enough to provide a good idea/ estimation of what we would see in a normal application.

    Hope this helps answer your question.

    If this helped resolve your issue, please don't forget to click "This resolved my issue".

    If you have further questions please reply to this thread.

    Thank you,

    Calan

  • 0 in reply to Calan Elaya
    Prodigy 30 points

    Any suggestion (IC) if more than 3A, say 5 or 6A at 3.3V is required?

  • 0 in reply to Saurabh Sinha
    TI__Genius 11435 points

    Hello,

    Yes sure, TPS566238 can still apply here. TPS568231 & TPS56C231 can also apply. Please take a look at these to see if they meet your full set of requirements:

    https://www.ti.com/product/TPS568231

    https://www.ti.com/product/TPS56C231

    https://www.ti.com/product/TPS566238

    Please let me know if any further questions.

    Thank you,

    Calan