Section 4. Power Design CORE SELECTION - …

Section 4. Power Design i(20)gauss) p(2000 gauss)SaturationFlux DensityBm GaussCore Loss (mw/cm )(Typical)@100 kHz, 1000 Gauss25 C100 C25 C100 C25 C60 C100 CF3000460049003700100180225P250065005000 390012580*125R230065005000370014010070K1 500350046003900J5000550043002500W+10,000 12,00043002500 INTRODUCTIONF errite is an ideal core material for transformers, invertersand inductors in the frequency range 20 kHz to 3 MHz, due tothe combination of low core cost and low core losses. Tapewound cores do offer higher flux densities and better tempera-ture stability, advantages which may off-set their higher is an excellent material for high frequency (20 kHz to3 MHz) inverter Power supplies.

TABLE 2 CIRCUIT TYPE SUMMARY For ferrite transformers, at 20 kHz, it is common practice to apply equation (4) using a flux density (B) level of ± 2 kG maxi-

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  Design, Section, Power, Selection, Core, Section 4, Power design core selection, Ferrites

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