DDR4 PDN simulation and measurement: correlation study to compare simulations and measurements for a DDR4 Power Net

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DDR4 PDN simulation and measurement: correlation study to compare simulations and measurements for a DDR4 Power Net

This paper addresses correlation for a PCB Power Delivery Network (PDN) against decoupling simulations performed with HyperLynx PI. We correlate the frequency-domain behavior of a DDR4 1.2V power rail, with the goal of ensuring a maximum target PDN impedance across a specific frequency range. Even though DDR4 is commonly considered a mainstream technology, many engineers are still struggling to implement reliable interfaces that operate at maximum speed.

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