The 5-Minute Method for Stabilizing Any Control Loop
By Steve Sandler | January 28, 2020 One method of designing stable control loops is to create an accurate broadband simulation model and...
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Picotest
Jun 28, 20191 min read
Siglent App Note: Measuring Power Supply Control Loop Response with Bode Plot II
In this application note, we will show you the basic principles for making this stability measurement and how to use these instruments to...
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Picotest
Sep 27, 20181 min read
Earn IEEE CEU/PDHs and learn the latest design techniques at EDI CON University
All conference pass holders are eligible to attend, but pre-registration happens during the registration process. After attending an EDI...
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Picotest
Aug 8, 20181 min read
August Book Sale: Get Your Copy of Power Integrity for Only $65
PROVEN TECHNIQUES FOR GENERATING HIGH-FIDELITY MEASUREMENTS Power Integrity: Measuring, Optimizing, and Troubleshooting Power Related...
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Picotest
Jul 30, 20181 min read
EDI CON USA 2018 Announces EDI CON University
All conference pass holders are eligible to attend, but pre-registration happens during the registration process. After attending an EDI...
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Picotest
Jul 6, 20171 min read
Accurately measure ceramic capacitors by extending VNA range
Ceramic capacitors play an oversized role in circuit performance as a major contributor to voltage regulator control loop stability and...
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Picotest
Jun 20, 20171 min read
Introduction to NISM – Non-Invasive Stability Measurement with Steve Sandler
More information on this revolutionary measurement technology can be found here: https://www.picotest.com/non-invasive-stability-measurem...
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Picotest
Apr 26, 20171 min read
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...
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Picotest
Jan 29, 20161 min read
Killing the Bode Plot
Many new linear devices, including voltage references, voltage regulators and opamps have internal feedback loops, prohibiting...
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Picotest
Jan 12, 20152 min read
Impedance measurements stabilize op-amp buffers
Figure 1. Op amps are often used as unity gain signal buffers, which are not as simple to use as it may appear. The unity-gain op amp...
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Picotest
Jan 7, 20151 min read
Impedance measurements make a difference at DesignCon
What do clock jitter, EMI, control loop stability, SPICE modeling, rogue waves and the ripeness of fruit have in common? Do you need to...
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Picotest
Oct 30, 20141 min read
Paultre on Power – Steve Sandler of Picotest on power test and noise (Podcast)
October 31, 2014 In this podcast Steve Sandler of Picotest talks to Alix Paultre of Power Systems Design on the issues of power test,...
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Picotest
Jul 1, 20142 min read
Three Stability Assessment Methods Every Engineer Should Know About
Many engineers are familiar with the Bode plot as an effective stability assessment method. However, some authors suggest and even teach...
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Picotest
Apr 23, 20141 min read
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,...
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Picotest
Jan 22, 20142 min read
Five Things Every Engineer Should Know About Bode Plots
In 1938 Hendrik Wade Bode, who worked at Bell Labs, published his asymptotic assessment of phase margin and gain margin, bearing his name...
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Picotest
Jan 6, 20141 min read
Non-Invasively Assess Your Multiple-Loop LDO’s Stability
Some low-dropout regulators (LDOs) use multiple feedback loops to improve output voltage transient response. In many of these cases, some...
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Picotest
Dec 10, 20131 min read
Troubleshooting Distributed Power Systems: Measuring Ripple (Part 7 of the ongoing series)
And by taking measurements across all three test domains, designers can trace power supply ripple-related problems back to root causes...
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Picotest
Nov 14, 20131 min read
Troubleshooting Distributed Power Systems: The Switch (Part 6 of the ongoing series.)
With those measurement requirements as background, Sandler examines how switching frequency and duty cycle affect power supply stability...
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Picotest
Oct 30, 20132 min read
How To Verify Control Loop Design
The non-invasive stability assessment is a method that uses an output impedance measurement to accurately determine stability without...
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Picotest
Oct 7, 20131 min read
Troubleshooting Distributed Power Systems: Using Current Injectors (Part 5 of the ongoing video seri
Although not quite as accurate as the two-port VNA impedance measurement, the current injection technique has advantages including wide...
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