PROJECT TITLE :
Analysis and Comparison of Audible Noise Caused by Magnetic Components in Switch-Mode Power Supplies Operating in Burst Mode and Frequency-Foldback Mode
During this paper, it's theoretically shown and experimentally verified that operation of switch-mode power provides in burst mode (BM) ends up in lower audible noise than operation in frequency-foldback mode (FFM). But, the selection of the switching frequency in an exceedingly burst package will have a significant impact on the audible noise. In both BM and FFM, the audible noise will be reduced by decreasing the height worth of current pulses and proportionally increasing the burst frequency in BM and the switching frequency in FFM. In BM, the audible noise will be additional reduced if instead of skyrocketing the burst frequency, the number of burst pulses is increased while not changing the burst frequency. The presented BM and FFM audible noise analyses are experimentally verified on a dc-dc boost test circuit.
Did you like this research project?
To get this research project Guidelines, Training and Code... Click Here