按RT/L值直观展现变换器CCM/DCM模式间的转换

Intuitive Display of Converter Transfer Between CCM and DCM Mode Based on RT/L Value

Buck DC/DC变换器在输出端扼流圈电感量L估算完成后,就要对L值与系统参数及其整个运行过程做出预测,以判断这些参数能否胜任总体要求。这项工作的结果,大都是以比较直观形象化的曲线图形式显示出来,给设计者一个一目了然的认知。尤其是当变换器的工作过程比较复杂、不是单一负荷、不是固定不变的运行方式、工作模式之间常常相互转换,这就必须进行该项预测。符合预期当然就可以确定下来;不符合预期,就需要对L值、或R值、或T值予以修正,直到RT/L值满足预期要求为止。

Buck DC/DC converter will predict the inductance, system parameters and the whole running process to judge whether the parameters can meet the general requirements after the inductance estimation of output terminal choke. The results are shown with visualized diagrams, which is a visible cognition for designer, especially when the working process of converter is complex, not singleload and fixed, and the working modes always change. It can be settled if within expectation. If not, L/R/T should be corrected until RT/L meets the expected requirement.