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TPS54386: http://www.ti.com/lit/ds/symlink/tps54386-q1.pdf <-I find wrong text!!

CHOI SEUNG WON
Expert 1030 points
Part Number: TPS54386

Dear TI

I read TPS54386/TPS54386-Q1 Datasheet and find a mistake in datasheet!

MSS1278-153ML is 15uH. but Datasheet talk to use 22uH!

Which is it right? 22uH?

Best regards.

  • 0
    TI__Guru**** 191445 points

    Choi,

    The circuit does in fact use the 22 uH inductor.  The calculated value for L1 and L2 are 18.3 uH and 15.3 uH respectively, based on ripple current of 30%.  The conservative approach would be to use the next higher size inductor for lower ac ripple current.  In this case 15 uH would still be an appropriate value with slightly higher ripple current.