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    A (Permalloy + NiZn Ferrite) Moldable Magnetic Composite for Heterogeneous Integration of Power Electronics

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    Downloads: 279
    Date
    2019-06-22
    Author
    Ding, Chao
    Mei, Yunhui
    Ngo, Khai D. T.
    Lu, Guo-Quan
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    Abstract
    Soft magnetic moldable composites (SM2Cs) would be ideally suited for the integration of magnetic components in power electronic converters because they can be formed into magnetic cores by low-temperature and pressure-less processing. However, most SM2Cs have low relative magnetic permeability, typically less than 30, and high core-loss densities at switching frequencies over 1 MHz. To improve their magnetic properties, we combine powders of Permalloy and a NiZn ferrite with an acrylic polymer to formulate a paste of SM2C. The paste can be molded and then cured below 200 °C without pressure to form cores with a relative permeability over 35 and a core-loss density at 1 MHz, 30% lower than those of commercial cores. The ease of its processing and high-performance properties makes the SM2C a good candidate material for the integration of power magnetics.
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    http://hdl.handle.net/10919/91200
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    • Journal Articles, Multidisciplinary Digital Publishing Institute (MDPI) [1133]
    • Scholarly Works, Electrical and Computer Engineering [676]
    • Scholarly Works, Materials Science and Engineering (MSE) [393]

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