#nyquist

Nov 2, 20171 min read

Bode Plots are Overrated

Control loop stability is critically important. But whether your focus is on power supply design, power integrity, or mixed-signal power...

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...

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...

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...

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...

May 15, 20131 min read

Troubleshooting Distributed Power Systems: Why Stability Matters (Part 1 of the ongoing video series

In this 5-minute video presentation, Steve Sandler discusses how stability impacts circuit performance, offering examples that...

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...

Sep 1, 20111 min read

New Technique for Non-Invasive Testing of Regulator Stability

Output impedance is the key to testing filter and regulator phase margin, even when the control loop is inaccessible. Many voltage...