Optimizing Inductive Interconnect for Low Power

The width of an interconnect line affects the total power consumed by a circuit. A trade off exists between the dynamic power and the short-circuit power dissipated in inductive interconnect. The optimum line width that minimizes the total transient power dissipation is determined in this paper. A closed form solution for the optimum width with an error less than 5% is presented. For a specific set of line parameters and resistivities, a reduction in power approaching 78% is achieved as compared to the minimum wire width. Considering the driver size in the design process, the optimum wire and driver size that minimizes the total transient power is also determined.