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Evaluate Feedback Stability When There’s No Test Point



Fortunately, a new technique permits non-invasive stability testing of such devices.1 Designers can evaluate stability by measuring (on the bench) or simulating (on a computer) the device’s output impedance. The bandwidth and phase margin are calculated by analyzing the impedance’s group delay.

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#phasemargin #gainmargin #design #articles #nism #picotest #noninvasivemeasurement #stability #converter #regulator #bodeplots

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