The stability test is an important part of the evaluation of a DC/DC converter. If done properly, the Bode plot result can be a very quick and useful way to help you gauge the stability of the converter. In the absence of a theoretical analysis, use a network analyzer to measure the Bode plot and confirm the stability of the design. The control-loop gain, which can be plotted in a Bode plot, is a very good indicator of the stability of the DC/DC converter.