具有快前沿的10 kV纳秒级脉冲电源的研制

Development of 10 kV nanosecond pulse power supply with fast leading edge

  • 摘要: 随着SiC MOSFET器件快速开关特性的发展,其在需要高速、灵活高压脉冲输出的电路系统中得到广泛应用。研究表明,SiC MOSFET的导通时间主要受栅极驱动技术及其实现方式的影响,因此相关研究多聚焦于其栅极驱动方法优化。该研究通过对SiC MOSFET栅极驱动回路进行参数测试与优化设计,并将其应用于超快导通型SiC MOSFET器件,以实现导通时间的显著缩减。为验证优化效果,研究团队设计并制备了栅极升压驱动器的优化原型进行实验测试。测试数据表明,经过优化的栅极驱动电压调节方法有效提升了器件性能,在10 kV电压等级与50 A电流条件下,脉冲电压上升沿时间可达27 ns。

     

    Abstract: With the development of fast switching characteristics of SiC MOSFET devices, they are widely used in circuit systems that require high-speed and flexible high-voltage pulse output. Studies have shown that the on-time of SiC MOSFETs is mainly affected by the gate drive technology and its implementation. Accordingly, related studies have mostly focused on the optimization of its gate drive method. In this study, a SiC MOSFET gate drive circuit was parametrically tested and optimized, and applied to ultra-fast conduction SiC MOSFET devices to achieve a significant reduction in on-time. To verify the optimization effect, the research team designed and prepared an optimized prototype of the gate boost driver for experimental testing. The test data show that the optimized gate drive voltage regulation method effectively improves the device performance, with a pulse voltage rising edge time of up to 27 ns under 10 kV voltage level and 50 A current conditions.

     

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