This article will describe how Bode plots can be leveraged as a tool to quickly assess if your power-supply design will meet the requirements for dynamic control behavior.

In some cases, the control loop Bode plot can be extracted in a non-invasive manner, just by examining the regulator’s output impedance, as illustrated in Fig. 5.

Figure 2 reflects the Bode plot for this circuit response: Figure 2: Bode plot for a single pole, low-pass filter (Click on image to enlarge) While attempting to accurately determine the corner ...