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多平面高頻變壓器設計注意事項</h3>
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<span>文章出處??a href=""><a >深圳市晨飛電子有限公??/a></a></span><span>網責任編輯：<a >NSW</a></span><span>作者：<a >NSW</a></span><span>人氣??span
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<p> 為了適應隨著現代科技電子設備小型、輕薄、便攜等發(fā)展使用的要求，以及現代電子設備組裝工藝如SMT的要求，一些傳統(tǒng)型磁性元器件正在被多種輕小型平面磁性元器件替代。使用與實驗表明，平面型結構的磁性元器件有諸多優(yōu)點，諸如體積小、熱傳導性能優(yōu)良，在高功率密度下工時具有較小的功率損耗，適合使用SMT工藝等??/p>
<p> 為了一次性精確設計出性能優(yōu)良的高頻磁性元器件，需要對其漏感、繞組的分布電容、趨膚效應和鄰近效應等寄生參數進行計算。目前，對其中的疊層<strong><a href="http://www.linhang.com.cn/product/product-0001,0015.shtml">高頻變壓??/a></strong>、矩陣高頻變壓器、圓形螺旋線圈薄膜高頻變壓器等磁性元件已經具有了比較成熟的計算方??對于多平面高頻變壓器的設計應該注意哪些方??</p>
<p> 首先，電路模型設計以頻率特性關系為前提，假設磁性材的頻率特性是線性的，沒有磁滯效應，因此，不需要區(qū)分輸入電壓的性質。其次，線圈內的磁通分布是必須考慮的，以便于確定如何才能有效地利用磁心所需材料的用量，以及如何使磁通分布均勻。渦流分布方面的知識有助于計算線圈的銅損和磁心材料內的渦流損耗??br />
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