摘要
传统的电压源驱动MOSFET的方式,开关损耗会随着开关频率的增加而显著增加。交错并联技术能够以较低的开关频率实现高频输出电压波动,具有纹波互消、相间分流等优点。在此将一种新型的电流源驱动电路应用于交错并联技术的Buck主电路,在对电路损耗进行详细分析的基础上,设计了在开关频率1 MHz、输入5 V条件下,实现输出1.3 V/20A的电路拓扑,达到了较小电压纹波输出和较高装置效率的要求。
With traditional voltage source driver,switching losses are greatly increased with the increas-ing of switching fre-quency.The interleaving technique has several advantages such as the high frequen-cy output voltage ripple with lower switching frequency,ripple cancellation,current sharing between the phases.A new circuit of current source driver is ap-plied to a two phase-interleaving Buck converter.A smaller output voltage ripple and high efficiency devices are achieved basing on the analysis of power loss at frequency 1 MHz,5 V input,1.3 V and 25 A output.
出处
《电力电子技术》
CSCD
北大核心
2010年第4期36-37,84,共3页
Power Electronics
基金
国家自然科学基金(50777001)~~
关键词
变换器
驱动电路
电流源
开关损耗
converter
drive current
current source
switching loss
