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High efficiency DC–DC converter for wide‐ranging loads with gradual reverse current stopping technique
Author(s) -
Yamada Kouhei,
Sugahara Satoshi,
Fujii Nobuo
Publication year - 2008
Publication title -
ieej transactions on electrical and electronic engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.254
H-Index - 30
eISSN - 1931-4981
pISSN - 1931-4973
DOI - 10.1002/tee.20334
Subject(s) - converters , current (fluid) , rectifier (neural networks) , electrical engineering , pulse width modulation , power (physics) , electronic engineering , ranging , computer science , engineering , voltage , physics , telecommunications , stochastic neural network , quantum mechanics , machine learning , recurrent neural network , artificial neural network
A novel reverse current stopping technique for synchronous rectifiers in DC–DC converters is proposed. It is based on gradual adjustment of the ON‐time of the synchronous rectifier to finally stop the reverse current. Therefore, delay to detect and stop reverse current does not cause extra reverse current, so almost perfect reverse current stopping can be achieved with small DC power consumption. An example circuit of the proposed technique was designed and included in a fixed ON‐time pulse frequency modulation (PFM) control DC–DC converter. The designed converter was fabricated in the 0.35 µm CMOS process, and then its operation was verified. Copyright © 2008 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.