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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.
Pete Starkey, I-Connect007
Believing that I knew a bit about signal integrity and controlled impedance, I was pleased to take the opportunity to connect with an educational webinar that I hoped would extend my knowledge. In the event I was surprised at how little I actually knew, and the webinar was an excellent learning opportunity. The webinar was introduced and expertly moderated by Anna Brockman of Phoenix Contact in Germany.
Andy Shaughnessy, Design007 Magazine
I recently spoke with Heidi Barnes and Stephen Slater, both engineers with Keysight Technologies, about their presentations at this year’s virtual AltiumLive. They discussed ways to avoid signal and power integrity challenges later by following simple board design practices early on, how SI and PI are interconnected, and why the return path must be more than an afterthought in high-speed designs.
I-Connect007 Editorial Team
First, we asked you to send in your questions for Happy Holden, Joe Fjelstad, Eric Camden, John Mitchell, and Tara Dunn in our “Just Ask” series. Now, it’s Heidi Barnes’s turn! Today's question: What is the biggest challenge for PCB design engineers right now?