Optimizing efficiency on conventional transformer based low power AC/DC standby power supplies

Nils Nielsen

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Abstract

This article describes the research results for simple and cheap methods to reduce the idle- and load-losses in very low power conventional transformer based power supplies intended for standby usage. In this case "very low power" means 50 Hz/230 V-AC to 5 V-DC@1 W. The efficiency is measured on two common power supply topologies designed for this power level. The two described topologies uses either a series (or linear) or a buck regulation approach. Common to the test power supplies is they either are using a standard cheap off-the-shelf transformer, or one, which are loss optimized by very simple means.
Original languageEnglish
Title of host publicationNineteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2004. APEC '04.
PublisherIEEE
Publication date2004
ISBN (Print)0-7803-8269-2
DOIs
Publication statusPublished - 2004
Event19th Annual IEEE Applied Power Electronics Conference and Exposition - Anaheim, CA, United States
Duration: 22 Feb 200426 Feb 2004
Conference number: 19
http://www.apec-conf.org/2004/APEC04_Home_Page.html

Conference

Conference19th Annual IEEE Applied Power Electronics Conference and Exposition
Number19
CountryUnited States
CityAnaheim, CA
Period22/02/200426/02/2004
Internet address

Bibliographical note

Copyright: 2004 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

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