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Original question:

TPS568231: Recommended component values for Vout=0.9V

TPS568231: Recommended component values for Vout 1.8V and 5.0V

Paul Willis
Prodigy 70 points
Part Number: TPS568231
Other Parts Discussed in Thread: TPS56C231

I would like to use two instances of this regulator in my current design.  One to generate 1.8V and the other to generate 5.0V.

Neither of those Vout values are listed in Table 8-2 (Recommended Component Values) in the datasheet.

Can you please provide the recommended component values for those output voltages?

Thank you,

Paul W.

  • 0
    TI__Expert 4755 points

    Hi Paul,

    I am currently working on this. I will get back to you in a couple of days.

    Best,

    Calan

  • 0
    TI__Expert 4755 points

    Hi Paul,

    As for your 5V vout design, I would recommend following the values from the 5.5V recommended in the table.

    For your 1.8V design, I would recommend choosing values slightly higher than the 1.2V recommended component values. Cout min and Cout max have fairly similar values throughout, and for inductor values, a value slightly higher than the 1.2V components would be sufficient. The datasheet Application section also contains formulas to calculate values that you need.

    In addition, you can use Webench designer tool to design and approximate what you would need for your design. Since this particular part does not have a webench, you can use TPS56C231 since it is a similar device.

    Best,

    Calan