Signal Integrity, Power Integrity, & EMC Blog 

Control loop stability is critical  to the performance of any system, influencing everything from closed-loop parameters to system noise. Unfortunately, verifying stability is often a major challenge. For many devices—like voltage references, fixed voltage LDOs, and integrated POLs —traditional Bode plot assessment is simply not feasible  because the feedback loop is inaccessible or requires destructive modification of the PCB . Furthermore, Bode plots fail for complex system

Example Co-Simulation Results After setting up your Keysight ADS workspace and dropping in our SI/PI models , the real power of our SI/PI library becomes clear. Our pre-defined component models, which include state-space average VRM models, regulators, and other essential components, are built for comprehensive power integrity analysis. They provide the foundation for powerful co-simulations that give you a complete picture of your design's performance. Before tackling advanc

Unlock the full potential of your power integrity simulations and power integrity analysis with our extensive SI/PI Library. We've partnered with leading manufacturers like Texas Instruments, Analog Devices, and Renesas to provide you with a comprehensive suite of pre-defined component models, including VRMs, regulators, and passive components. This powerful library is designed to support true end-to-end simulation, allowing you to seamlessly integrate your custom ASICs, GPUs

Touchstone Models and Scattering Parameters: Fundamentals and Importance in SI/PI Touchstone® (SnP) models are a key asset in the fields of signal integrity (SI) and power integrity (PI) when analyzing high-data rate, high-speed designs. These frequency-domain models characterize the linear behavior of passive interconnects and components such as PCB traces, vias, connectors, and packages by describing how signals are reflected and transmitted at various ports across a wide r

Solve complex power integrity challenges with the R&S MXO5. Our guide shows you how to measure PDN impedance, use advanced probing, and automate testing.

What are the Challenges with Manual Transient Step Load Response Testing Measuring power rail transient performance in response to high...

When we teach about S-parameters and modeling, someone never fails to ask “What is causality?”  or “What happens if a model isn’t causal?”  Our go-to explanation is that it's a cause and effect thing: a system is causal if its output doesn’t respond before its input changes. In a causal universe, the light shouldn't turn on before you flip the switch. This seems straightforward. After all, if you're modeling or measuring a physical system — say, interconnects between a drive

There’s a unique mix of excitement and anxiety that comes with powering up a new hardware design for the first time. After weeks or...

The grind of repetitive lab tasks  can be a major drain on an engineer's time and energy. Think about those hours spent manually collecting data for something like a Voltage Regulator Module's Vout vs. Iout characteristics, the process is tedious and prone to human error. Fortunately, the solution is closer than you may think. Today's test equipment is increasingly capable of automation , offering a powerful path to efficiency and accuracy . If you've been wondering how to ge

In Part 1 of this blog series, we discussed why we measure impedance, how to measure impedance of a VRM, identifying instability using...

Time and time again, we discuss that flat PDN impedance is important to achieving low noise power delivery solutions to a load. However,...

Transient voltage responses of a PDN subjected to periodic step loads. Large signal measurements are essential to Power Distribution...

The constant development of new and emerging technologies, such as Artificial Intelligence (AI), electric vehicles, and 5G/6G...

In today’s world of high-power, high-current designs, especially in AI and data center ASICs, Power Integrity (PI) challenges are...

If you're looking to select a power supply to use in your design, read this before dropping it or a VRM into your schematic.

This article provides an in-depth exploration of how to effectively capture large signal behaviors through sequential trigger measurements.

Zone triggering with the MXO5 oscilloscope allows intuitive, versatile trigger conditions for multiple non-synchronized signals.

Find out exactly what makes Picotest Port Savers so important to your electronic instrument setup.

The goal of this article is to show design & test engineers how to accurately capture the control stability of a VRM or power rail efficient

The goal of this article is to show design and test engineers the process of how to accurately measure the impedance of any VRM.