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http://dx.doi.org/10.6113/TKPE.2010.15.4.259

Design of High Power Density AC/DC Adapter  

Lee, Jun-Young (명지대 전기공학과)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.15, no.4, 2010 , pp. 259-265 More about this Journal
Abstract
The proposed method offers an improved control method for high power density AC/DC adapter by using more energy efficient electrical equipments. Power factor corrector (PFC) topology is based on boost topology with boundary conduction mode (BCM) and DC/DC topology is based on LLC resonant converter, which helps to reduce size of the semiconductor and the magnetic devices. Test results with 85W AC/DC adapter (18.5V/4.6A) design shows that the measured efficiency is 90% at $90V_{rms}$ input voltage with power density of $36W/in^3$. It also shows low no load power consumption of about 0.5W.
Keywords
AC/DC adapter; High power density; Boundary conduction mode; LLC resonant converter;
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