Open AccessEffect of output capacitor ESR on dynamic performance of voltage‐mode hysteretic controlled buck converter
Author(s) -
Bao B.C.,
Yang J.,
Xu J.P.,
Zhang X.,
Zhou G.H.
Publication year - 2013
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2013.2043
Subject(s) - capacitor , buck converter , capacitance , equivalent series resistance , converters , voltage , hysteresis , control theory (sociology) , ćuk converter , materials science , electrical engineering , physics , engineering , computer science , control (management) , electrode , condensed matter physics , quantum mechanics , artificial intelligence
Different types of capacitors have different parameters, e.g. equivalent series resistance (ESR) and capacitance. In switching DC–DC converters with voltage‐mode (VM) hysteretic control, the output capacitor ESR has a significant effect on dynamic performance. In this reported work, two critical conditions of the output capacitor ESR for mode shifting and normal operation of the VM hysteretic controlled buck converter are derived. These results, verified by circuit simulations, illustrate that the larger output capacitor ESR is necessary for the converter operating normally; otherwise, the converter operates abnormally.