AC/DC notebook adapter with 22mW no-load power consumption

Author

Lee, Byoung-Hee ; Ryu, Byoung-Woo ; Choi, Seong-Wook ; Moon, Gun-Woo

Author_Institution

Dept. of Electr. Eng., KAIST, Daejeon, South Korea

fYear

2011

fDate

May 30 2011-June 3 2011

Firstpage

468

Lastpage

473

Abstract

An AC/DC notebook adapter with reduced no-load power consumption is proposed in this paper. During no-load condition, a lower limit of the output voltage is further lowered to reduce feedback circuit loss at the secondary side. Moreover, control-IC on/off scheme is employed to reduce power consumption of control-IC. As a result, the proposed AC/DC adapter of 65 W/17.5 V prototype can reduce the no-load power consumption under 30 mW. Operational principles and experimental results are presented to verify the feasibility of the proposed AC/DC adapter. Moreover, loss analysis of AC/DC adapter at no-load condition is also provided.

Keywords

AC-DC power convertors; digital integrated circuits; notebook computers; AC-DC notebook adapter; control-IC on-off scheme; feedback circuit loss; no-load power consumption; power 22 mW; power 30 mW; power 65 mW; voltage 17.5 V; Electromagnetic interference; Feedback circuits; Loss measurement; Power demand; Resistors; Voltage control; AC/DC Adapter; No-Load Power;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and ECCE Asia (ICPE & ECCE), 2011 IEEE 8th International Conference on

Conference_Location

Jeju

ISSN

2150-6078

Print_ISBN

978-1-61284-958-4

Electronic_ISBN

2150-6078

Type

conf

DOI

10.1109/ICPE.2011.5944583

Filename

5944583