Power distribution network design from charge delivery perspective

Abstract

In high-speed electrical system design, power integrity (PI) has become critical in designing a power distribution network (PDN). In this paper, a time-domain PDN design method is proposed from a charge delivery perspective. Firstly, the integrated circuit (IC) switching current, drawn from the PDN, is expanded into a series of triangular currents. Next, charge delivery models are presented for ideal passive components and a PDN consisting of these components. Finally, the PDN charge delivery model is combined with the IC switching current (expressed as a summation of triangular currents) to develop the time-domain PDN design method. A practical case study is demonstrated at the end of the paper to validate the proposed PDN design method.