As Sandler explains, analysis based on impedance measurements can more thoroughly assess control loop stability than Bode plot...

Evaluating the stability of a Point-Of-Load (“POL”) regulator can be performed using both traditional Bode plot and output impedance...

We can equate the stability to an equivalent phase margin by assuming the magnitude of the gain vector to be 1 and solving for the Q. In...

How do you use the Picotest injectors and the Agilent analyzer to measure output impedance and/or non-invasive step loading? For the...

Fortunately, a new technique permits non-invasive stability testing of such devices.1 Designers can evaluate stability by measuring (on...

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

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This application note also shows how the phase margin of a linear voltage regulator (LM317) can be measured using the Bode 100 and...