Traditional dynamic voltage drop (DVD) signoff relies on simulating multiple cycles of timing vectors (VCD or vectorless). But this catches only a fraction of all possible switching combinations. Increasing the number of simulation cycles takes prohibitively long. Consequently, voltage margins increase to offset the lack of good coverage, which leads to slower performance, and higher power. Even when problems are detected, there is no actionable fixing guidance.
SigmaDVD introduces an entirely novel, breakthrough approach to DVD that eliminates the reliance on vector simulation to give aggressors 100% coverage of all realistic switching combinations. It typically runs in a few hours - about the same time as 20 cycles of traditional DVD simulation. This significantly reduces over-design in power distribution networks and the risk of failure due to a missed worst-case switching event. Less over-design improves chip performance and lowers your power usage.