have a design issue that i'm working through. I have a buck regulator that needs a 22uH inductor that is passing up to 18A. Power efficency is a big issue, as well as thermal considerations.. So, i need to use an inductor with a low DC resistance. That ends up being quite a sizeable component ( 22 x 20 x 18mm or so ), which doe'snt fit my packaging very well.
I was thinking that potentially i could use multiple smaller inductors. ( which have a lower height profile - which is the main issue ) and create an equivalent inductance out of four or so parts. However i'm wondering what coupling effects might occur and how best to lay things out..
Anyone out there have any experience with this.
I was thinking that potentially i could use multiple smaller inductors. ( which have a lower height profile - which is the main issue ) and create an equivalent inductance out of four or so parts. However i'm wondering what coupling effects might occur and how best to lay things out..
Anyone out there have any experience with this.
