Courtesy of Coilcraft : Molded Power Inductor
Coilcraft offers three popular styles of high-performance molded power inductors, designated XEL, XAL and XFL Series. They are mechanically rugged and magnetically shielded for use in high density circuits. Each style offers unique performance benefits.
XEL/XAL – High current & high frequency
XFL – Lowest losses
The following table demonstrates the differences in these series.
|L nom||DCR typ||Isat (30%)|
|XEL4020-222||2.2 µH||35.2 mOhms||5.9 A|
|XAL4020-222||2.2 µH||35.2 mOhms||5.6 A|
|XFL4020-222||2.2 µH||21.4 mOhms||3.7 A|
The following curves, derived from the Coilcraft Core and Winding Loss Calculator, show that the new XEL has lower AC loss compared to the XAL. XFL has the lowest total power loss.
For high switch frequency power converters that are designed to withstand high peak current, XEL is the best choice.