Power supplies use control-loop circuits to produce constant voltage or current. The transfer function—gain and phase as a function of frequency—provides valuable information about a control loop’s ...

During the early 1980s, Dean Venable popularized the Bode plot with the introduction of a low-cost frequency response analyzer (‘FRA’) that allowed power engineers to directly measure the phase margin ...

It is not always possible to access the feedback loop of a dc-dc converter to measure its Bode plot. In production hardware, it is usually not permissible to lift wires or cut traces to determine the ...