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 measurement, obtained non-invasively, always does. Challengers ...

To start lets find the magnitude at w = 1 again. It is important to make it simple when calculating the magnitude by picking a frequency that is lower than all other poles and zeros, besides the pole ...

Many articles and application notes describe the extraction of phase margin, using a non-invasive technique that extracts the phase margin from an output impedance measurement. The term non-invasive ...