Webench/LM25118: Using two inductors instead of one due to physical constraints?

Hi Kris,

We received your inquiry and will get back to you shortly.

Kris,

Putting power inductors in parallel can be a challenge and might not actually save you any board space.

However the Coilcraft XAL6060-223 might be a good fit for you. It is 6.76mmX6.10mm (LxH) and has a saturation current of 5.6A.

Many magnetic vendors make it easy to sort through the inductors based on dimensions.

-Garrett

Thank you, that helps a lot!

If the inductance, DCR, and current capability are suitable... is there anything else I should watch out for?

The inductance, DCR and current capability are the big three when selecting an inductor.

This article covers the inductor selection process more in depth for a buck converter. It might be useful for a reference in the future

Thanks! I have one last question if you don't mind-

I have a switching regulator reference schematic which seems to use a dual winding inductor in dual-inductor configuration:-

The part is DRQ127-150-R

Am I safe to replace with two separate inductors?

For example, 2pcs of... XAL6060-153ME_

Thanks!

Kris

Hi Kris,

The schematic you show above is for a SEPIC topology. For this topology it is normal for the a transformer to be used like this. A SEPIC is also a buck-boost derived converter topology.  Here is a good article that goes over the basics of a SEPIC converter.

Thanks,

Garrett