Proper control loop phase and gain measurements should be made by factory experts possessing (expensive) equipment and commensurate experience. For those who do not have access to one or either of these, there is an alternative.
Brandon Nghe is an applications engineer at Analog Devices. He received his M.S.E.E. from California Polytechnic State University in 2020. Brandon is responsible for the design and testing of boost, buck-boost, and LED driver DC-to-DC converters for low EMI automotive applications.