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DescriptionQ391
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Q391DesignGoogleASIC interview problem

Choose a localized IR-drop repair

TechniquesDesignPhysical designIR dropPower integrity
DifficultyMedium
TopicPhysical Design
LanguageSystemVerilog
Format4 choices
01

Problem

Sign-off shows a small cluster with dynamic IR drop beyond the limit. Timing slack is +180 ps, routing congestion is low, and the global power grid meets limits elsewhere. Which first change most directly targets the problem with the least unrelated disruption?

02

Answer choices (4)