Space Power Workshop 2021 - Power Integrity Challenges In the Space Industry, An Update
Learn about the current state of Power Integrity analysis and test in the Space industry from PI Guru Steve Sandler. This video discusses...
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Tektronix App Note: Measuring the Control Loop Response of a Power Supply Using an Oscilloscope
Most power supplies and regulators are designed to maintain a constant voltage over a specified current range. They are essentially...
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...
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...
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...
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...
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...
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...
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,...
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...
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,...
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...
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...
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...
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...
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...
How to Solve 8 of 10 Design Issues
The vast majority of design issues are directly or indirectly attributable to control loop stability. The most common offenders: Linear...
Assessing Point-Of-Load Regulators Using Non-Invasive Techniques
Evaluating the stability of a Point-Of-Load (“POL”) regulator can be performed using both traditional Bode plot and output impedance...
FAQ #21: How do you use the Picotest injectors and the Agilent analyzer to measure output impedance
How do you use the Picotest injectors and the Agilent analyzer to measure output impedance and/or non-invasive step loading? For the...
Exploring Bandwidth, Gain Margin and Phase Margin in Non-Invasive Measurement
Summary Among the most frequently asked questions regarding non-invasive stability measurement are “How do I determine the bandwidth,...