Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Design of High Power Density AC/DC Adapter
Authors 李Jun-Young Lee
DOI 10.6113/TKPE/2010.15.4.259
Page pp.259-265
ISSN 1229-2214
Keywords AC/DC adapter; High power density; Boundary conduction mode; LLC resonant converter
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 90Vrms input voltage with power density of 36W/in³. It also shows low no load power consumption of about 0.5W.