# Items Tagged with 'Power Integrity'

## Why Do Experts Disagree About Power Integrity Solutions?

In this article, Eric Bogatin uses the issue of power integrity to illustrate why dialog between experts is crucial.

As a closing gesture to the SI, PI, and EMC/EMI community, we want to leave all of you with a year-end holiday gift for your continued support.

## Power Integrity Fundamentals: Impedance vs. Frequency

Understanding a few simple power integrity (PI) fundamentals can go a long way towards increasing design margins when delivering power to high-speed digital loads. In this piece, Heidi Barnes provides some fundamental lessons on impedance.

## The Goldilocks TDR

It pains me to say this, but there is such a thing as turning the TDR up too high and it is also easy not to have enough. If there is a “too high,” and a “not high enough,” there must also be a “just‐right,” or Goldilocks, setting. Using measurements, and a smattering of math, the Goldilocks setting answers
will be clear. Read on to find out how.

## What Does it Take to Be a Successful SI, PI, or EMC Engineer?

The principles underlying SI, PI, and EMC are not magic, and they are not about mysterious energy flows in the space between conductors. They are firmly rooted in the fundamental properties of electromagnetic fields, with a 160 year long rich history. Embrace it!

## Signal Integrity Characterization of Via Stubs on High-Speed DDR4 Channels

As DDR data transmission rates continue to increase, the signal integrity of the DDR channel has become one of the most critical concerns. This article takes an extensive look at the impact of via stubs on the impedance of the signal lines on DDR4 memory, including test cases and ways to optimize design.

## Optimizing Power Distribution Networks for Flat Impedance

It takes only one rogue voltage wave to kill a PDN in high-speed digital designs. Flat impedance optimization before layout lowers the risk of rogue waves occurring in your design. Heidi Barnes explains how rogue waves occur and addresses how to get the best performance at the lowest cost.

## Just How Fast is GaN Fast?

Check out this description of what is likely the fastest GaN edge-speed ever recorded.

## Automotive Special Report: Faster Buses and Challenging Designs

Automotive design has captured the public’s imagination, and their expectations are creating countless technical challenges for engineers working in this space. For SI/PI/EMC/EMI engineers, the challenges are unique inside the car due to harsh environments as well as crowded systems.