Stability Analysis of DC-DC Converters: Time Domain Method Explained

Learn how to ensure stable automotive DC-DC converters through time-based analysis from Monolithic Power Systems. Modern automotive systems—like infotainment and ADAS—demand tight voltage regulation despite dynamic pulsating loads. To meet this, next-gen DC-DC converters need fast loop responses. Load transient testing offers a quick, effective method to evaluate converter performance, including regulation speed and loop stability. By applying fast load changes and observing output with an oscilloscope, engineers can assess stability without expensive frequency response analyzers. The topics covered in this webinar are: Measure the loop stability in time domain Estimate the cross-over frequency and phase margin Understand influence of output capacitor and tune feed-forward capacitor for loop stability