同步整流器驱动方式对开关电源效率的影响

Influences of Driven Methods on Synchronous Rectifier of Switch-mode Power Supply

在低电压大电流输出的开关电源中，输出整流器的功率损耗是影响电源效率的关键因素．本文详细分析了在采用功率ＭＯＳＦＥＴ实现整流输出的同步整流技术中，同步整流器的驱动方式对电源效率的影响。

The rectifier power loss is the key factor limiting the efficiency of a low voltage switch mode power supply. The influences of synchronous rectifier driving method on power supply efficiency are analysed in this paper. It is proposed that higher efficiency may be obtained by using control driven synchronous rectifier than by using self driven synchronous rectifier.