This converter not only retains the advantages of ttfc but also has only two camping diodes . moreover the proposed converter operates at nearly unity duty - ratio for very high efficiency and eliminates the voltage overshoot of the output rectifying diodes 本文提出了一種新型直直變壓器拓?fù)?,該拓?fù)洳粌H保留了雙管正激變換器的優(yōu)點,而且在原邊僅含兩個續(xù)流二極管,電路結(jié)構(gòu)簡單。
Based on comparison between the parallel - parallel and parallel - serial combination ttfc , a novel two - transistor forward converter with parallel - serial / serial combination is proposed . this converter reduces greatly the current overshoot of the primary side switches and the voltage overshoot of the rectifying diodes . moreover , the size and weight of the converter can also be reduced by interleaving technique and increasing frequency 本文在對并-串型和并-并型雙管正激組合變換器進(jìn)行了詳細(xì)比較研究的基礎(chǔ)上,提出了一種新型并-串串型雙管正激組合變換器,該組合變換器可以大大減小原邊開關(guān)管的電流應(yīng)力和副邊整流電路中二極管的電壓應(yīng)力;通過交錯控制及提高開關(guān)頻率,大大提高了變換器的功率密度。