Open AccessQuasi‐constant‐frequency variable off‐time control technique for buck‐type DC–DC converter
Author(s) -
Chen Xing,
Zhou Guohua,
Xu Shungang,
Zhou Shuhan
Publication year - 2015
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2015.1298
Subject(s) - buck converter , constant (computer programming) , control theory (sociology) , time constant , ćuk converter , variable (mathematics) , forward converter , physics , control (management) , electrical engineering , mathematics , computer science , engineering , boost converter , voltage , mathematical analysis , artificial intelligence , programming language
There are two weaknesses in conventional constant off‐time controlled buck‐type DC–DC converters: which are varied switching frequency and poor output‐regulation accuracy. To make the switching frequency immune to the variation of the input voltage and the reference voltage and provide both high output‐regulation accuracy and a fast transient response for buck‐type DC–DC converters, a new control method, called the quasi‐constant‐frequency variable off‐time control technique, is proposed. Circuit simulation results validate the correctness of the theoretical analysis.