Measurement of multiple switching current components through a bulk decoupling capacitor using a lab-made low-cost current probe

Abstract

This paper presents a measurement-based data-processing approach to obtain parameters of multiple current components through a bulk decoupling capacitor for power integrity studies. A lab-made low-cost current probe is developed to measure the induced voltage due to the time-varying switching current. Then, a post data-processing procedure is introduced to separate and obtain the parameters of multiple current components. The results obtained by the proposed method are validated with other approaches.