A great power supply needs to respond quickly to load changes and maintain a constant output without excessive ringing or oscillation. New oscilloscopes can measure the response of a power supply control loop as familiar Bode plots, making it easy to evaluate margins and compare circuit performance to design models. From these plots, gain margins and phase margins can be determined to gauge power supply stability.
From this application note, you will learn:
• The basics of control loops, frequency response analysis and Bode plots
• Gain and phase margins highlights
• How to set up control loop response analysis on an oscilloscope
• How to interpret frequency response plots and measurements
Learn how you can use Tektronix Oscilloscopes with Advanced Power Measurement and Analysis for frequency response analysis.