最高能效，最低成本: BC2
作者：意法半導(dǎo)體 上傳時(shí)間：2012/1/3 12:02:44
摘要：本文論述一個(gè)新穎而簡單的適用于各種類型硬開關(guān)功率轉(zhuǎn)換器的電能回收電路，這個(gè)電路只需使用幾個(gè)意法半導(dǎo)體的元器件：1個(gè)微型線圈、2個(gè)耦合輔助線圈、兩個(gè)優(yōu)化的PN結(jié)二極管。而且，這個(gè)電路完全兼容任何一種PWM控制器。本文論述這個(gè)成本最低且能效更高的獨(dú)特電能回收電路的基本設(shè)計(jì)方法。為了突出這個(gè)拓?fù)涞暮锰帲谝粋�(gè)90VRMS-264 VRMS的通用系列450W硬開關(guān)式功率因數(shù)校正器內(nèi)，把這個(gè)電路與8A碳化硅肖特基二極管進(jìn)行了比較，為了更全面客觀的比較，使用了幾個(gè)開關(guān)頻率(72kHz、140kHz和200kHz)。比較結(jié)果顯示，新電路的能效高于碳化硅肖特基二極管。此外，這個(gè)包括專用二極管和小線圈在內(nèi)的整流級(jí)具有很高的成本效益，符合大眾市場的預(yù)期。
敘詞：功率轉(zhuǎn)換器 電能回收電路 微型線圈 耦合輔助線圈 二極管
Abstract：he paper introduces a simple and novel energy-recycling circuit, which is applicable to all kinds of hard switch power convertor. Its circuit only needs several components by ST microelectronics, that is, one micro coil, two coupling auxiliary coils, two optimized PN diodes. In addition, it is compatible to any PWM controllers. The paper introduces basic design of the energy recycling circuit, which is of lowest cost and higher energy efficiency. In order to tell the advantages of the topology, it is compared with 8A carborundum SSD, under 450W switch power factor corrector, which is a general series with 90VRMS-264 VRMS . Several switch frequenceis (72kHz140kHz and 200kHz) are applied so that a comprehensive and objective comparison can be realized. Results show that the energy efficiency of the new circuit is higher than carborundum SSD. Besides, the rectifier level including specified diode and small coil has high cost benifits and can meet the market expectations.
Keyword：Power convertor , Energy recycling circuit , Micro coil , Coupling auxiliary coil , Diode
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－－本文摘自《電源世界》，已被閱讀77716次
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