3F36 Improved performance at low temperature Flat loss, medium to high frequency power material for broad temperature range applications. ERROXCUBE is a member of the Yageo Group, F which is among the world's strongest suppliers of high quality passive components. As a leading supplier of ferrite components. FERROXCUBE has manufacturing operations, sales offices, and customer service centers all over the world. We supply one of he broadest ranges of high-quality, innovative products and place strong emphasis on miniaturization of magnetic functions. Ferrite components and accessories from FERROXCUBE are used in a wide range of applications, from telecommunications and computing electronics through consumer electronic products to automotive. FERROXCUBE as the leading manufacturer in the ferrite industry, has been providing to the power conversion industry ferrite cores with low power losses and high saturation magnetic flux density over a wide range of operating frequencies (20kHz to 10MHz). This has allowed us to support today's manufacturers of power conversion systems in their drive for greater miniaturization, lower weight and reduced power consumption in applications where the temperature rise and maximum achievable temperature can be estimated. The switching frequency of power conversion equipment is continuously growing, searching for both efficiency and miniaturization. These working conditions require specific properties from the transformers and inductors in order to minimize magnetic power loss in the system: These properties include extended frequency bandwidth, high resistivity to prevent eddy currents and a flat response over a temperature range for reliable behavior in outdoor applications. Temperature stability is also a key design parameter in reaching the highest efficiency awards when tested under light load conditions when the system is not heating itself. Ferroxcube 3F36 has been developed to work in this field with a flat response over a temperature range and optimal operating frequency spanning from 250 kHz to 1 MHz keeping a maximum magnetic flux density as high as 420 mT (at 100 deg C, 1200 A/m). Target applications are many: automotive DC/DC converters in hybrid and electric vehicles, photovoltaic microinverters, DC/DC converters in telecommunication and computing equipment or high power LED drivers for public lighting are among some of the potential applications. 3F36 Improved performance at low temperature 3F36 Material Specifications Fig. 1 Complex permeability as a function of frequency Fig. 2 Initial permeability as a function of temperature Fig. 3 Typical B-H loops Fig. 4 Amplitude permeability as function of peak flux density Fig. 5 Specific power loss as a function of peak flux density with frequency as a parameter Fig. 6 Specific power loss for several frequency/flux density combinations as a function of temperature 5 3F36 vs 3F35 Symbol Conditions μi μa Bsat PV ρ 25 °C; ≤10 kHz, 0.25 mT 100 °C; 25 kHz, 200 mT 25 °C; 10 kHz, 1200 A/m 100 °C; 10 kHz, 1200 A/m 25 °C; 400 kHz; 50 mT 100 °C; 400 kHz; 50 mT 25 °C; 500 kHz; 50 mT 100 °C; 500 kHz; 50 mT 25 °C; 500 kHz; 100 mT 100 °C; 500 kHz; 100 mT DC; 25 °C TC Density 3F36 1600±25% ≈ 2400 ≈ 520 ≈ 420 ≈ 70 ≈ 60 ≈ 110 ≈ 90 ≈ 700 ≈ 700 ≈ 12 ≥230 ≈ 4750 Value 3F35 1400±25% ≈ 2400 ≈ 500 ≈ 420 ≈ 120 ≈ 60 ≈ 170 ≈ 90 ≈ 900 ≈ 700 ≈ 10 ≥240 ≈ 4750 Unit mT 3 kW/m Ωm °C 3 kg/m Power Loss Comparison Ferroxcube provides also 3C95, a flat loss material optimized for frequencies up to 400 kHz. Graph below shows 3C95 performance factor data to help select the optimum material when the frequency is in the overlapping area. handbook, full pagewidth 80000 f x Bmax (Hz T) Pv = 500 mW/cm3 100 °C 30 °C 60000 3F36 40000 3C95 3C94 20000 0 10 −2 6 10 −1 1 operating freq. (MHz) 10 3F36 The performance factor (f x Bmax) is a measure of the throughput power that a ferrite core can handle at a certain loss level. Each material has its optimum operating frequency range. Above 300kHz 3F36 will benefit in higher throughput power than Ferroxcube well known 3C95 material. In typical ferrite materials like 3C94 performance factor at room temperatures drops down due to the saddle shape of the losses versus temperature curve. 3F36 and 3C95 exhibits no drop at room temperatures, and this is what makes of them best materials for broad temperature applications. Design remarks: Power loss curve fit parameters It maybe necessary to calculate the core loss density in different conditions when designing a transformer or inductor. An approximation of the core loss density for any combination of operating temperature (T) in [° C], frequency (f) in [Hz] and flux density (B) in [T] can be obtained from the following empirical fit formula : Material Freq min Freq max Cm x y Ct 2 Ct 1 Ct 3F35 100000 499999 6.83E-03 1.4390 3.2672 1.614E-04 3.352E-02 2.759E+00 3F35 500000 799999 1.12E-07 2.1952 2.7199 1.284E-04 2.105E-02 1.801E+00 3F35 800000 1200000 2.24E-10 2.6105 2.4977 8.170E-05 1.011E-02 1.152E+00 3F36 100000 499999 6.83E-03 1.4390 3.2672 8.395E-05 1.078E-02 1.233E+00 3F36 500000 799999 1.12E-07 2.1952 2.7199 8.926E-05 1.172E-02 1.282E+00 3F36 800000 1200000 2.24E-10 2.6105 2.4977 6.119E-05 6.142E-03 1.011E+00 Results obtained with this formula are an estimation of typical material performance. Product specs will show higher power loss density. 7 FERROXCUBE - A GLOBAL COMPANY HQ Taipei,Taiwan Ferroxcube Taiwan Tel: +886 2 6629 9999 Fax: +886 2 6628 8886 Mail: [email protected] ASIA Europe North America Dongguan, China Ferroxcube China Elmshorn, Germany Ferroxcube Germany El Paso (TX), USA Tel: +86 769 8681 8777 Fax: +86 769 8733 9561 Mail: [email protected] Tel: +49 4121 870 199 Fax: +49 4121 870 271 Mail: [email protected] Suzhou, China Ferroxcube China Cinisello Balsamo (MI), Italy Ferroxcube Italy Tel: +86 512 6825 5568 Fax: +86 512 6825 5386 Mail: [email protected] Tel: +39 02 6604 5469 Fax: +39 02 6129 1739 Mail: [email protected] Singapore Ferroxcube South Asia Skierniewice, Poland Ferroxcube Polska Tel : +65 6244 7800 Fax : +65 6244 4943 Mail: sales_sa@ferroxcube Tel: +48 46 834 00 07 Fax: +48 46 834 00 35 Mail: [email protected] Guadalajara, Spain Hispano Ferritas Tel: +34 949 247 179 Fax: +34 949 247 146 Mail: [email protected] Tel: +1 915 599 2328 Fax: +1 915 599 2555 Mail: [email protected] San Diego (CA), USA Tel: +1 619 207 0061 Fax: +1 619 207 0062 Mail: [email protected] Phoenix (AZ), USA Tel: +1 480 821 2634 Mail: [email protected] Pittsburgh (PA), USA Tel: +1 724 602 2420 Fax: +1 724 602 2420 Mail: [email protected] For a complete listing of all Ferroxcube sales offices, distributors, and representatives, please visit "contact us" at www.ferroxcube.com © Ferroxcube International Holding B.V. 2014 All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights. Printed in Poland Document order number: FXC 100 00004 Date of release: May 2014