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 ...

Did you ever wonder how to calculate the stability of an op amp circuit? Put the wrong compensation network into the feedback loop, and you’re got an attenuator or, worse, an oscillator. It’s not ...

The phase margin in the compensation feedback loop of buck power converters is an indicator of both loop stability and the acceptability of the converter’s pulse response. The phase margin in the ...

For the PDF version of this article, click here. Switching power supplies rely on feedback control loops to ensure the supply maintains the required voltage and current with varying load conditions.