Alternate Method of Power Supply Loop Gain Measurement

The video is on alternate method of measuring the loop gain of a power supply by utilizing the 'error signal' and the 'feedback signal' in a closed loop feedback system. By injecting a disturbance on the reference signal and sweeping it for the desired range of frequency the loop gain of the power supply system can be measured. In the video: 1. Theoretical comparison is made between middlebrook method and the alternate method of loop gain measurement of a power supply. 2. Measurement setup is explained for the alternate method and a hardware demonstration is performed. 3. Measurement and simulation results are compared. Disclaimer: This work has been supported by the Department of Energy (DOE). This research used resources of the National Synchrotron Light Source II, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Brookhaven National Laboratory under Contract No. DE-SC0012704. Cite as: Chirag Birla, Alternate Method of Power Supply Loop Gain Measurement. (Jul. 14, 2026). IEEE Educational Videos on Power Electronics. [Online Video]. Available: https://doi.org/10.17024/pelstube.202.... Except where otherwise noted, this work is licensed to author(s) under https://creativecommons.org/licenses/... #powerelectronics #softswitching #electronicsengineering #electronics