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Picotest
Jun 11, 20131 min read
Troubleshooting Distributed Power Systems: Impedance Is the Critical Measurement (Part 2 of the ongo
As Sandler explains, analysis based on impedance measurements can more thoroughly assess control loop stability than Bode plot...
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Picotest
May 1, 20131 min read
Target impedance based solutions for PDN may not provide realistic assessment
One of the more common design techniques for power distribution networks (PDN) is the determination of the peak impedance that will...
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Picotest
Sep 18, 20122 min read
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...
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Picotest
Jun 26, 20121 min read
Understanding the Data Sheet Key to Effective Circuit Design
While the graph of Fig. 1 seems straightforward, there are several issues that become apparent when one tries to make sense of what the...
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Picotest
Jun 15, 20121 min read
How To Measure Ultra-Low Impedances
Maintaining clean, regulated voltage requires more than a high-quality power supply. The power distribution network (PDN)—which, together...
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Picotest
Jun 7, 20121 min read
FAQ #20: 2 Port Shunt Thru Impedance Measurement With The Bode 100
2 Port Shunt Thru Impedance Measurement With The Bode 100 Below are a few diagrams on how to do a 2-port impedance measurement and have...
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Picotest
May 22, 20121 min read
When Bode Plots Fail Us
It may come as a surprise to some that a control loop’s Bode plot does not always depict the loop stability and that the output impedance...
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Picotest
Feb 27, 20121 min read
Extracting Bode Plots from Output Impedance
Many articles and application notes describe the extraction of phase margin, using a non-invasive technique that extracts the phase...
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Picotest
Feb 17, 20122 min read
Stability Assessment of Fixed Regulators
There are cases where a Bode (gain?phase) plot cannot be obtained from a control loop. For example, a three terminal regulator or hybrid...
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Picotest
Sep 7, 20111 min read
Measuring the Output Impedance of Voltage References and Zener Diodes
In this article we examine the process of measuring a key performance characteristic, output impedance, using the Picotest J2130 DC Dias...
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Picotest
May 4, 20111 min read
An Accurate Method For Measuring Capacitor ESL
With ESL values typically in the range of 1 nH to 5 nH, measuring the ESL of chip capacitors is not a trivial task. At present, some...
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