大功率同步整流电源设计要点分析

Analysis of Design Key Points of High Power Synchronous Rectifier Power Supply

但传统的大功率开关电源通常是基于二极管整流原理而设计的,如果电流过大,其压降会造成很大的损耗。理论分析和大量的研究表明,采用MOSFET代替传统的整流二极管进行同步整流,可以进一步减小通态电阻,降低整流损耗,从而大大提高电源效率。但同步整流技术当前主要应用于小功率电源设备,在大功率电源方面的应用还处于起步阶段,许多关键技术仍有待深入的研究。为此,本文将对大功率同步整流电源的设计要点进行分析,以期为相关领域提供参考和借鉴。

But the traditional high-power switching power supply is usually designed based on the principle of diode rectification.If the current is too large,its voltage drop will cause great loss.Theoretical analysis and a large number of studies show that the use of MOSFET instead of traditional rectifier diodes for synchronous rectification can further reduce the on-state resistance,reduce rectification losses,thus greatly improving power efficiency.However,synchronous rectification technology is mainly used in low power supply equipment,and its application in high power supply is still in its infancy.Many key technologies need to be further studied.Therefore,this paper will analyze the design points of high-power synchronous rectifier power supply,in order to provide reference and reference for related fields.