漂移阶跃恢复二极管（DSRD）具有开关速度快、重频高、工作电流大等优点，在脉冲功率技术中很有应用前景。研究了一种基于磁饱和变压器的DSRD泵浦电路拓扑结构，具有体积小、重量轻、可靠性高等特点。根据DSRD的工作要求，采用功率MOSFET作为初级开关，结合磁饱和变压器的升压和磁开关特性，设计了DSRD的泵浦电路。利用Pspice软件对电路进行了仿真分析，验证了电路原理的正确性。在仿真分析的基础上，完成了一台原理样机的设计和电路实验。实验结果表明，该电源样机在前级充电电压800 V条件下，50 Ω负载上产生的脉冲幅值大于7 kV，前沿小于4.2 ns（10%～90%），半高宽约10 ns。

Drift step recovery diode (DSRD) has a great application prospect in pulse power technology for its notably short switching-off time, high repetition rate and large working current. In this paper, a DSRD pump circuit topology based on magnetic saturation transformer is studied. The topology is small, light and reliable. According to the operating requirements of DSRD, a pump circuit was designed. It consists of a power MOSFET primary switch and a magnetic saturation transformer with boost and saturation characteristics. The circuit was simulated by Pspice software, which confirmed the principles of the circuit. Based on the simulation analysis, a prototype was designed and its circuit experiment was implemented. The experiment indicates that when the charging voltage is 800 V, the pulse amplitude on resistor load of 50 Ω is larger than 7 kV, the rise time is less than 4.2 ns (10%?90%) and the FWHM is about 10 ns.