具有无损耗缓冲电路的软开关双管正激式变换器  

Soft Switching Double Transistor Forward Converter with a Lossless Snub Circuit

作　　者：喻建军 

机构地区：[1]武汉洲际通信电源集团技术中心,武汉430035

出　　处：《通信电源技术》2001年第4期4-7,共4页Telecom Power Technology

摘　　要：介绍了一种具有无损耗缓冲电路的软开关双管正激式变换器。它采用无损耗缓冲技术,使开关管工作在软开关状态,抑制了dv/dt,使开关管的开关损耗下降一半左右。同时缓冲电路本身并不消耗能量,而是将能量返回到系统中,提高了整机效率。文中对其工作原理,缓冲电路的能量转换过程进行了分析,并给出了实验结果及波形。The article introduces a kind of soft switching double transistor forward converter with a lossless snub circuit. It adopts the lossless snub technology to make the switch transistor operate in the soft switching status and restrain dv/dt, thus to cut down about 50% of the loss when switching. Meanwhile, the snub circuit will return the energy to the system instead of consuming it thus to improve the system efficiency. The article describes its operation principle and analyses the energy conversion process of the snub circuit and illustrates the test result and waveform.

关 键 词：软开关 开关损耗 双管正激 变换器 缓冲电路 

分 类 号：TN86[电子电信—信息与通信工程]