Open AccessPredictive over‐current protection scheme for step‐down DC–DC converter with emulated current mode control
Author(s) -
Wang Langyuan,
Zhao Menglian,
Wu Xiaobo,
Zhu Zhijie
Publication year - 2016
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.2016.1390
Subject(s) - current (fluid) , current limiting , electronic engineering , scheme (mathematics) , cmos , control theory (sociology) , computer science , electrical engineering , engineering , control (management) , mathematics , mathematical analysis , artificial intelligence
A novel over‐current protection scheme for stepping down DC–DC converter with emulated current mode control is introduced. The proposed over‐current protection scheme overcomes an inherent lack of emulated current mode control, and can realise fast response and smooth control to over‐current events. The sample–hold technique is employed to generate adaptive reference for predictive current limit threshold. The scheme is verified by simulation and fabricated in 0.18 µm bipolar‐CMOS‐double‐diffused metal‐oxide‐semiconductor (DMOS) process.