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TPS55340: Inductor value

PAN-M
Mastermind 8375 points
Part Number: TPS55340

Dear Team,

Our customer says that I want to use an inductor of 1uH(7m-ohm) on the following conditions.
Vin=11-13V, Vout=26.5V, Iout=1.8A, Cout=10uF x 2;

I used WEBENCH with a switching frequency as 1.2MHz, but come off from recommendation.
What kind of problem will happen when customer use this design?

Best Regards,
PAN-M

  • 0
    TI__Expert 7450 points

    Hi PAN,

    Thanks for your interest in TPS55340.

    Not sure what is the real reason for Webench.

    But the most critical issue here is that the inductor is too small, which makes the peak current exceed the limit of the device.

    Thanks,

    Yinsong