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Power Supply Measurement and Analysis with 4/5/6-PWR Application Software


Optimizing and validating a power supply design requires a number of important measurements.  These include:

  • Line-side power quality measurements, such as power factor, inrush current, and harmonics
  • Switching device measurements, such as switching loss and safe operating area
  • In-circuit inductor and transformer measurements
  • Control loop response (stability analysis), rejection ratio, and impedance measurements
  • Output measurements, such as ripple

Although many of these measurements can be made manually, many engineers use automation tools on their oscilloscopes to achieve faster, more repeatable results. 

This application note explains how to set up an oscilloscope to take these measurements. It gives a high-level overview of the various measurements, how they are used, and what results they provide.