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A linearly adaptive gate drive technique for light‐load efficiency improvement of DC–DC converters
Author(s) -
Liu PangJung,
Chen YiJan Emery
Publication year - 2009
Publication title -
international journal of circuit theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.364
H-Index - 52
eISSN - 1097-007X
pISSN - 0098-9886
DOI - 10.1002/cta.527
Subject(s) - converters , voltage , power (physics) , gate driver , control theory (sociology) , current (fluid) , electrical engineering , electronic engineering , computer science , engineering , physics , quantum mechanics , control (management) , artificial intelligence
This paper presents a linearly adaptive gate drive technique to improve the light‐load efficiency of DC–DC converters. The optimal‐driving voltages of the power MOSFETs for reducing gate‐driving loss can be well modeled by a linear function of the load current. By scaling the gate drive voltage dynamically with respect to load current, the light‐load efficiency can be enhanced. The experimental result shows that the proposed gate drive technique can attain about 9% incremental light‐load efficiency enhancement. Copyright © 2008 John Wiley & Sons, Ltd.