Powdered Iron Core Inductors

Iron powder toroid cores xx.

Powdered iron core inductors. Iron and alloy powder core solutions. Powdered iron and ferrite power inductors inductors manufactured by vishay a global leader for semiconductors and passive electronic components. Most applications of iron powder cores are substitutions of inductors made of ferrite cores. Micrometals proprietary inductor designer allows design engineers to input their specific electrical requirements and review design options that can be sorted and optimized based upon performance attributes cost or size.

Both materials are based on the iron powder somaloy 500 manufactured by höganäs ab sweden but with a difference in mixes and heat treatment they experience diverse magnetic and electric properties. These applications include dc dc converter output filter inductors and power factor correction inductors. For the lowest loss inductors kool m µ hƒ and mpp materials should be used for their ultra low losses. Coilcraft power inductors offer different structure types sizes and inductance values for a wide range of power converter applications.

Two iron powder core inductors with different core materials have been designed. If the peak inductor current is less than 20 a the ferrite core is likely to be preferred core choice whereas the powdered iron core would be preferred at higher peak currents. All magnetics powder core materials are used in inductors but each has its own advantages. Magnetics powder core products kool mu sendust mpp molypermalloy kool mµ max kool mu hƒ edge tm high flux xflux and 75 series materials are distributed air gap cores that are primarily used in power inductor applications specifically in switched mode power supply smps output filters also known as dc inductors.

This is an especially important characteristic in late generation vrm vrd power supplies with high transient current requirements where inductor current is likely to spike well above the operating waveform. For the smallest core size in a dc bias dominated design high flux and edge should be used for their highest flux capacity. Air core inductor ferromagnetic iron core inductor ferrite core inductor iron powder core inductors ceramic core inductors laminated steel core inductor toroidal core inductor drum bobbin core inductor multi layer inductor thin film inductor molded inductor coupled inductor power inductor. For best q use the mix specified for your frequency to find the number of turns to give the desired inductance for your coil use the formula below.

Iron powder cores are more stable than ferrites and do not saturate as easily so they are best for tuned circuits filters and high power inductors.