Open AccessSmall‐signal model for a flyback converter with peak current mode control
Author(s) -
Chen ShenYuar
Publication year - 2014
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2013.0326
Subject(s) - flyback converter , small signal model , block diagram , flyback transformer , transfer function , current (fluid) , control theory (sociology) , signal (programming language) , diagram , buck–boost converter , block (permutation group theory) , computer science , voltage , engineering , mathematics , control (management) , boost converter , electrical engineering , geometry , artificial intelligence , programming language , transformer , database
This study presents a systematic block diagram for a peak current mode controlled flyback converter to investigate its dynamic properties at high switching frequencies. At low frequencies, the proposed block diagram approximates the converter current loop to a current source. To verify the proposed model, a flyback circuit was tested. The control‐to‐output transfer function obtained from derived small‐signal model shows good agreement in frequency response between the derived result and the experimental one spanning from the DC to the approaching half‐switching frequency.