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Simulation / Analysis for PCB Design

Monte Carlo Simulation vs. Sensitivity Analysis

Monte Carlo Simulation vs. Sensitivity Analysis: What’s the Difference? SPICE gives you an alternative to Monte Carlo analysis so that you can understand circuit sensitivity to variations in parameters. Read Article

Identifying Near-field EMI in a PCB's Power Distribution Network

Identifying Near-field EMI in a PCB's Power Distribution Network Near-field EMI on the PDN in a PCB can be identified when you use a 3D field solver to examine your PCB layout. Here’s how Ansys SIwave integrates with Altium Designer for a powerful simulation workflow. Read Article

Power Integrity and Simulations with Heidi Barnes

Power Integrity and Simulations with Heidi Barnes What a very insightful discussion with Heidi Barnes of Keysight. In this episode, we will discuss all things simulations and power integrity in detail. We will dive into EM simulations, capacitor placement, Z, Y, and S parameters correlation measurements, and more! Read Article

Monte Carlo in SPICE

The Basics of Monte Carlo in SPICE: Theory and Demo Anytime you place a component in your PCB, it’s almost like you’re gambling. All components have tolerances, and some of these are very precise (resistors for instance), but others components can have very wide tolerances on their nominal values (e.g., wirewound inductors or ferrites). In the event the tolerances on these components become too large, how can you predict how these tolerances will affect your circuits? While you could calculate Read Article

PDN Simulation and Analysis Guide Cover

Ebook: PDN Simulation and Analysis Guide In this e-book, we’ll show how to create some fundamental PDN simulation models with SPICE, and how to analyze PDN impedance with industry-standard simulation programs. Read Article

ferrite bead PDN

Ferrite Bead Models and Transfer Impedance in a PDN Simulation Ferrites in a PDN and transfer impedance are investigated in this article. We’ll show how ferrites in a PDN create problems for switching circuits. Read Article

PDN Impedance Simulation SPICE

PDN Impedance Simulation and Analysis in SPICE PDN simulations can be performed in SPICE if you know how to properly model parasitics and inductive effects in power integrity analysis. Read Article

Power plane resonances PCB

When Do PCB Power Plane Resonances Occur? Do you know when a power plane resonance occurs in the PDN on a circuit board? We’ll examine when this occurs and what causes it. Read Article

Capacitive load termination

How To: Impedance Matching and Terminating Capacitive Loads Impedance matching and capacitive load termination are examined in this article. Read Article

Gibbs phenomenon

How the Gibbs Phenomenon Produces Measurement Artifacts The Gibbs phenomenon is a measurement artifact that can be mistaken for real signal integrity problems like ground bounce, ringing from reflections, or resonance on short lines. Read Article

PWM in Power Supply Design

PWM in Power Supply Design PWM signals are used to control average power delivery in switching regulator circuits. Read Article

MLCC controlled ESR capacitor

Controlled ESR Capacitors: Should You Use Them for Power Integrity? I can’t think of a single product I’ve built that doesn’t require capacitors. We often talk a lot about effective series inductance (ESL) in capacitors and its effects on power integrity. What about effective series resistance (ESR)? Is there a technique you can use to determine the appropriate level of resistance, and can you use ESR to your advantage? Like many answers to important engineering questions, the answer is “it depends.” One type of Read Article

H-bridge Full Wave Rectifier

Beginner's Guide to H-bridge Full Wave Rectifier Design Need to start a new power conversion design? You’ll probably need an H-bridge full-wave rectifier to produce a stable DC output. Read Article

Gibbs ringing

What Causes Gibbs Signal Ringing in High-speed Channel Simulations? Gibbs ringing is both a measurement artifact and a calculation artifact that arises in band-limited channels. Make sure you understand how this arises due to transform and convolution operations. Read Article

Power Supply Filter Topologies and Design Strategies

Complete Power Supply Filter Design and Simulation Guide A PCB for a power supply can be as difficult to design as high-speed networking equipment and complex embedded systems. These circuit board designs need to account for a range of behaviors and safety requirements, especially when dealing with high voltages and currents reaching the output of the power supply. In addition to safety standards involved in power supply PCBs, component selection is critical for ensuring the design can provide the Read Article

Impedance balancing power supply

How to Reduce Common-Mode Noise in Your Power Supply with Impedance Balancing You can use impedance balancing to reduce conducted common-mode noise in your power supply. Here’s how it works and some experimental results. Read Article

Circuit Board layout

New Dimensions of PCB Simulation and Modeling In this interview, they discuss why they developed this software and what solutions they can now offer design engineers. Read Article