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Powder Cores Designed for Cutting Edge Performance

February 10, 2020 by Magnetics

Edge provides a dramatic improvement in DC bias performance over High Flux while also cutting AC core losses to less than half of High Flux losses.

For designers of high current inductors targeting minimum size and maximum efficiency, Magnetics® has developed a breakthrough powder alloy core material: Edge™. Edge provides a dramatic improvement in DC bias performance over High Flux while also cutting AC core losses to less than half of High Flux losses.

 

Figure 1: Edge permeability vs DC bias comparison

Edge permeability vs DC bias comparison. Image courtesy of Magnetics®

 

The inherent advantage of powder alloy cores is their DC bias performance, meaning how well the material maintains inductance under current loading. For high current inductor applications, High Flux has often been the design solution that gives the smallest package size since it offers the best DC bias performance with the highest saturation level. Magnetics’ Edge boosts that saturation level even higher. For comparison, 60 permeability Edge reaches 50% roll-off at 205 Oersteds, vs. 185-195 Oersteds for best-in-class high flux materials, and 165 Oersteds for 6.5% Silicon Iron powder cores. Not only that but the performance tradeoff that designers had to accept when using High Flux – inferior AC losses – is removed, because Edge core losses are reduced to a level similar to MPP (molypermalloy powder).

Edge is available in permeabilities of 26 and 60 and in standard toroid sizes up to 40 mm diameter, as well as custom heights. Larger cores and additional permeabilities, including 125µ, are in development for release later this year. AL values, dimensions, coatings, and dielectric guarantees for Edge are the same as High Flux.

 

About Magnetics

Magnetics® is a leading world supplier of precision soft magnetic components and materials to the electronics industry. We specialize in research, design, and production of a broad range of high-quality powder cores, ferrite cores and tape wound cores for applications such as chokes, inductors, filter, transformers and power supply components for use in alternative energy, telecommunications, aerospace, military, computer, medical and other electronics systems.

Magnetics is the only global supplier with development, design and manufacturing operations for three soft magnetic product types: powder cores, ferrite cores, and strip wound cores.  This breadth of experience gives us the ability to respond to most magnetic product or application needs.

A recognized leader in quality and reliability, Magnetics’ products are manufactured to conform to international standards for electrical, dimensional and visual requirements. In addition, Magnetics' products comply with global environmental initiatives.

To meet our global customers’ needs for ongoing production, we operate two warehouse locations - Phoenix, AZ USA and Xiamen, China - with manufacturing also located in Xiamen, China. From relatively small production runs to large-scale, ongoing, time-sensitive manufacturing, Magnetics has the flexibility and agility to deliver high-quality products at cost-effective rates.

Magnetics has expertise in developing innovative solutions for your application. Magnetics Application Engineering is a resource for technical knowledge and innovative thinking that can shorten your design cycle, move through prototype testing and deliver high-quality products that fill your specialized needs.

 

This article originally appeared in the Bodo’s Power Systems magazine.