Mentor White Paper--Concepts of Power Integrity: Controlling Impedance Across a Bare Cavity


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The power distribution network (PDN) is the path from the power supply source (VRM) to the ICs (active devices). At low impedance, the PDN delivers adequate current to the receiver, enabling the PCB to function as desired.

Without a low-impedance path across the PDN, noise can propagate throughout a PCB, causing bit errors, voltage ripples, timing violations, and more. This white paper by Fadi Deek of Mentor, a Siemens Business, examines how impedance can be controlled in the PDN cavity. 

To download this free white paper, click here.

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