How To Choose Magnetics Materials—Beyond Ferrites And Iron-Powder
by Dennis Feucht, Innovatia Laboratories, Cayo, Belize, How2Power Today, Mar 13 2020
Focus:
The simple and well known rule in designing transformers and coupled inductors is
ferrites for transformers; iron-powder for inductors. While following this rule of
thumb gives designers a starting point in selecting a core material, it does not
enable the designer to choose the optimal core material within the ferrite and Fe-pwd
classes of materials, nor does it allow them to take advantage of the other core
materials such as NiFe, FeSiAl or NiFeMo. Or a gapped ferrite may be best. This
article describes the use of ripple factors to achieve optimal selection of core
materials among the various ferrite, iron-powder and other material options. In
addition, core materials are ranked according to their magnetic energy density and
cost—factors that can be used to guide core material selection for the cases where
core selection precedes circuit design.
What you’ll learn:
- How to optimize core material section for transformers and coupled inductors using ripple factors
- How to optimize core material selection for transformers and coupled inductors given across the full range of available materials
View this Source (requires a PDF Viewer installed on your device)
© 2025 How2Power. All rights reserved.