DDR4 PDN Simulation and Measurement

This white paper addresses correlation for a PCB power network (PDN) with respect to decoupling simulations performed with HyperLynx PI. We correlate the frequency domain behavior of a DDR4 power line at 1.2V, with the goal of ensuring a maximum PDN impedance across a specific frequency range. Although DDR4 is commonly considered a mainstream technology, many engineers are still struggling to implement reliable interfaces that operate at maximum speed.