I used TI Webench to spec out this boost converter circuit:
My hypothesis is that they are interchangeable. I think that if I boost from 3V to 5V with 80% efficiency, I should be able to draw 1.5A output by pulling 3.125A from the source. The original inductor was rated at 7A and the new one is rated at 18A max. Am I on the right track in my thinking here?
Also, the original had a maximum DC resistance of 14.7 mOhms. I decided that the lower value was better here. The new inductor has a DCR of 4.7 mOhms. Which is better? A higher or lower number for DCR? Why?
Are there any considerations that I missed? Will the inductor I selected work in this circuit?