【摘要】 在MOSFET的高频驱动电路中,传统的图腾柱式驱动存在损耗高、两管共通等缺点。因此提出了有利于减小驱动损耗,优化电路效率的谐振门极驱动方案。为了找到更适合高频驱动,更高效,结构更简单的电路,将传统的硬开关式驱动电路与3种结构简单,使用元件少,设计方便的典型谐振驱动电路作了对比。通过理论分析和实验对比,指出了3种电路的特点和适用条件,分析了电路的损耗及寄生参数的影响,在此基础上,择优选出了适合高频应用的电路。实验结果验证了理论分析。更多还原

【Abstract】 In high frequency drivers of MOSFETs,conventional totem-pole driver has several drawbacks including high drive losses,shoot through problem and so on.Therefore,to decrease drive losses and improve efficiency of driver cir-cuits,resonant gate drivers have been proposed.In order to find a satisfying driver in high frequency applications,conven-tional gate-driver and three reported resonant gate drivers are investigated for comparison in this paper.According to their advantages,limitations,operation conditions and influence of parasitic parameters,a more suitable driver for high frequency applications is found.Experimental results verify the theoretic analysis.更多还原