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.
|Title of host publication||Nineteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2004. APEC '04.|
|Publication status||Published - 2004|
|Event||19th Annual IEEE Applied Power Electronics Conference and Exposition - Anaheim, United States|
Duration: 22 Feb 2004 → 26 Feb 2004
Conference number: 19
|Conference||19th Annual IEEE Applied Power Electronics Conference and Exposition|
|Period||22/02/2004 → 26/02/2004|