Pulsic Limited has been granted US Patent #11383658 for a unique routing innovation incorporated in their physical chip design software. The patent, titled Automatic routing nets according to current density rules, protects unique technology incorporated in Pulsic’s UniRoute automated router. By taking into account the current required by the individual branches in a net, UniRoute is able to optimize a net’s width. This innovation creates the smallest net width that satisfies the electro-migration rules for current density. Optimizing the net widths not only eliminates the risk of electro-migration, but also significantly reduces IR losses and minimizes routing area. For layout engineers, this eliminates the need to estimate current densities and manually calculate varying net-widths for high fan-out interconnects.