LM5163-Q1: reducing the inductor value and size

O'Mellin

Part Number: LM5163-Q1

team, can you please advise the way the inductor is calculated in order to help my customer minimize value and size of inductor for operating point below:

Vin 30-60, Vout 12V iout .1-0.05A

Olivier

over 2 years ago

+1 Denislav Petkov over 2 years ago

TI__Mastermind 19070 points

Hello Olivier,

Normally the inductor will be calculated so that the ripple current is about 40% of the output load current (full load capability of the device).

If they want to minimize the inductor size, I would suggest using a bit higher switching frequency and perhaps designing for 50% ripple in the inductor. They can refer to the quick start excel based calculator here:

https://www.ti.com/tool/LM5163-LM5164DESIGN-CALC

Cheers,
Denislav

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LM5163-Q1: reducing the inductor value and size