基于UCC1895移相全橋電源的設(shè)計
2022年電子技術(shù)應(yīng)用第9期
林 杰,馬文超
中國電子科技集團公司第五十八研究所,江蘇 無錫214035
摘要: 移相全橋拓?fù)湟驗槟軌驅(qū)崿F(xiàn)真正的軟開關(guān),降低高頻下的開關(guān)損耗,得到了越來越廣泛的應(yīng)用。研制了基于UCC1895的300 W移相全橋電源,介紹了其電路結(jié)構(gòu)和軟開關(guān)的實現(xiàn)原理,說明了主電路的設(shè)計過程以及關(guān)鍵器件的選型依據(jù)。利用低側(cè)單通道驅(qū)動芯片和隔離變壓器解決了UCC1895驅(qū)動能力不足和全橋上下管驅(qū)動隔離的問題。通過對仿真波形和試驗數(shù)據(jù)的分析證明了整體方案的合理性。
中圖分類號: TN624
文獻標(biāo)識碼: A
DOI:10.16157/j.issn.0258-7998.212437
中文引用格式: 林杰,馬文超. 基于UCC1895移相全橋電源的設(shè)計[J].電子技術(shù)應(yīng)用,2022,48(9):140-144.
英文引用格式: Lin Jie, Ma Wenchao. Design of phase shifted full bridge power supply based on UCC1895[J]. Application of Electronic Technique,2022,48(9):140-144.
文獻標(biāo)識碼: A
DOI:10.16157/j.issn.0258-7998.212437
中文引用格式: 林杰,馬文超. 基于UCC1895移相全橋電源的設(shè)計[J].電子技術(shù)應(yīng)用,2022,48(9):140-144.
英文引用格式: Lin Jie, Ma Wenchao. Design of phase shifted full bridge power supply based on UCC1895[J]. Application of Electronic Technique,2022,48(9):140-144.
Design of phase shifted full bridge power supply based on UCC1895
Lin Jie, Ma Wenchao
The N0.58 Research Institute of China Electronic Technology Group Corp, Wuxi 214035, China
Abstract: Phase shifted full bridge topology has been more and more widely used because it can realize real soft switching and reduce switching loss at high frequency. A 300 W phase shifted full bridge power supply based on UCC1895 is presented. Its circuit structure and the implementation principle of soft switching are introduced. The design process of the main circuit and the selection basis of key components are explained. The problems of insufficient driving capacity of UCC1895 and driving isolation of upper and lower MOS of the full bridge are solved by using low side single channel driving chip and isolation transformer. Through the analysis of simulation waveform and test data, the rationality of the overall scheme is proved.
Key words : soft switching; phase shifted full bridge; UCC1895
0 引言
隨著開關(guān)電源對功率密度的要求越來越高,提高開關(guān)頻率,減小磁性器件的體積和重量成為一條最重要的途徑。但是伴隨著開關(guān)頻率地逐步提高,一方面,功率管硬開關(guān)帶來的開關(guān)損耗會導(dǎo)致器件的發(fā)熱嚴(yán)重,從而迫使工程師增加散熱器件的面積;另一方面,硬開關(guān)還會導(dǎo)致功率管在開關(guān)過程中承受更大的電壓應(yīng)力,同時還會產(chǎn)生高頻振蕩,這會加劇電磁噪聲的問題[1],工程中通常會使用更多的濾波電感和電容來應(yīng)對[2],導(dǎo)致電源體積和重量增大,這嚴(yán)重制約了開關(guān)電源高頻化的發(fā)展[3-4]。
為了解決這些問題,軟開關(guān)技術(shù)應(yīng)運而生。移相全橋就是其中一種可以實現(xiàn)零電壓開關(guān)的軟開關(guān)拓?fù)?,相比于其他軟開關(guān)拓?fù)?,移相全橋具有功率等級高,輸入輸出隔離等優(yōu)勢。
本文詳細內(nèi)容請下載:http://theprogrammingfactory.com/resource/share/2000004939。
作者信息:
林 杰,馬文超
(中國電子科技集團公司第五十八研究所,江蘇 無錫214035)
此內(nèi)容為AET網(wǎng)站原創(chuàng),未經(jīng)授權(quán)禁止轉(zhuǎn)載。