What is IR drop?

The drop in supply voltage reaching a circuit because current (I) flows through the resistance (R) of the power wiring. It increases delay and can cause malfunctions.

Field: Interconnect processes

IR drop in the explanations

Questions that mention IR drop (2)

  1. What is the phenomenon called in which current flowing through the resistance of power wiring lowers the supply voltage that reaches circuits?
  2. In the final check before tape-out (sign-off), which power-network analysis is performed alongside timing verification?

Related terms

Tape-out DRC (design rule check) LVS Electromigration Air gap Backside power delivery Barrier metal Black's equation Crosstalk Damascene process

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