How Can You Measure a HUGE Inductance with DC Bias?
by Steve Sandler Published by Signal Integrity Journal, May 19, 2022 Most DC/DC converters and switching voltage regulators use filter...
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The Ultimate Power Rail Noise Measurement
by Steve Sandler Published by Signal Integrity Journal, May 5, 2022 I receive many questions about measuring power rail noise: Do I...
Why EM Is Replacing SPICE For Simulation of Board-Level Power Delivery
How2Power.com - November 2021 by Heidi Barnes, Keysight Technologies, Santa Rosa, Calif. and Steve Sandler, Picotest, Phoenix, Ariz....
Measuring pH and fF With a TDR Using a Cursor Measurement
"The time domain reflectometer (TDR) is an instrument that is often used to measure printed circuit board (PCB) test coupons and cable...
Just How Fast is GaN Fast?
By Steve Sandler | March 12, 2020 “I recently designed an ultra-high speed, low-impedance pulse generator (Figure 1). I wanted it for...
Measuring a Scope Probe Requires Two Oscilloscope Channels and a Very Flat Signal Source
Oscilloscope users can also calibrate their passive oscilloscope probes, though the process is much less sophisticated and for lack of a...
Designing Power for Sensitive Circuits
What is a sensitive circuit? Sensitive circuits are those that can easily be degraded by power supply noise. These circuits generally...
Top Three EMI and Power Integrity Problems with On-Board DC-DC Converters and LDO Regulators
Kenneth Wyatt Wyatt Technical Services, LLC ken@emc-seminars.comSteve Sandler Picotest steve@picotest.com Modern devices are...
Optimizing Arduino and the AD9851 DDS signal generator
Arduino has taken the product “maker” world by storm and one of the more popular Arduino modules is the Analog Devices AD9851 DDS...
Power Integrity: It’s not just decoupling caps
Read more here #vrm #design #flatimpedance #powerintegrity #articles #roguewaves #capacitors #picotest #pdn #regulator #targetimpedance
How to measure the world’s fastest power switch
Gallium Nitride (GaN) FETS are poised to replace silicon power devices in voltage regulators and DC-DC power supplies. Their switching...
Simple trick to measure plane impedance with a VNA
Having said all of this, the measurement of a PCB plane using a VNA may not be as straightforward as you might expect. One simple trick...
Match impedances when making measurements
Recently, I used a shielded coaxial cable to measure power supply ripple and the results were even noisier than using an oscilloscope...
Improve Performance And Reduce Cost
Engineers are under constant pressure to improve the performance of their products while reducing product cost. The key to doing so is a...
SPICE models need correlation to measurements
Many SPICE models are available online that were created by IC and semiconductor manufacturers. Unfortunately, availability doesn’t...
Software Enables Accurate Stability Test, Improves Non-Invasive Phase Margin Measurement Accuracy
The mathematics behind the non-invasive measurement was incorporated into the OMICRON Lab Bode 100 VNA software, sold by Picotest.com,...
PCB characteristics affect PDN performance
Since no impedance path is perfectly flat, we need to make some design adjustments. This article aims to help you make compromises that...
Measure PDN on a budget
There are many good analyzers available for measuring PDN High performance VNAs are available from all of the major test equipment...
Understanding Voltage Response Of An LC Circuit
For an undamped LC circuit excited by an AC voltage source through simple phaser equations, we come to see that the circuit becomes short...
Measure small impedances with Rogowski current probes
You’re probably familiar with clamp on current probes, but chances are you don’t know much about the Rogowski current probe. A Rogowski...
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