MOSFET隔离型高速驱动电路  

Electrical-isolated high-speed MOSFET driver circuit

作　　者：纪圣儒[1] 朱志明[1] 周雪珍[1] 王琳化[1] 

机构地区：[1]清华大学机械工程系,北京100084

出　　处：《电焊机》2007年第5期6-9,77,共5页Electric Welding Machine

基　　金：国家自然科学基金资助项目(50375080)

摘　　要：结合以MOSFET为主要功率开关器件,应用于电弧超声焊接的高频脉冲激励系统的研发,在对MOSFET开通和关断过程进行分析的基础上,给出了MOSFET隔离型高速驱动电路所必需满足的条件。详细讨论了最大工作频率可达100 kHz、实现电气隔离、具有较强驱动能力和抗干扰能力的MOSFET驱动电路的设计与实现过程,实验结果证明了所设计驱动电路的可行性。所讨论的MOSFET驱动电路对于IGBT等其他电压控制型功率开关器件驱动电路的设计也有一定的借鉴意义。Combining with the re.arch and development of high frequency pulse stimulating system applied in arc excited ultrasonic welding,in which the MOSFET being used.the turn-on and turn-off processes of MOSFET are presented,and then its requirements of electrical-isolated high-speed driver circuit are introduced.After that, the design and implementation process of MOSFET driver circuit, which meets the requirements including operation frequency up to 100 kHz,electrical-isolated,strong driving capability and antidisturbance capability,is discussed in detail.Experimental results show the feasibility of the driver circuit.The driver circuits introduced in this paper have also referential values for designing driver circuits of other voltage-controlled switches such as IGBT.

关 键 词：MOSFET驱动 脉冲变压器 高速光耦 

分 类 号：TP402[自动化与计算机技术]