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| Título: | Efficient LDO-Assisted DC/DC buck converter for integrated power management system |
|---|---|
| Autor/a: | Martínez García, Herminio |
| Otros autores: | Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica; Universitat Politècnica de Catalunya. EPIC - Energy Processing and Integrated Circuits |
| Abstract: | |
| Materia(s): | -Àrees temàtiques de la UPC::Enginyeria electrònica -Voltage regulators -Linear-assisted DC/DC converters (or linear-switching hybrid DC/DC converters) consist of a voltage linear regulator (classic NPN or nMOS topologies and LDO) connected in parallel with a switching DC/DC converter. In order to control these hybrid structures -different strategies exist -allowing to fix the switching frequency as a function of some parameters of the linear regulator. This article compares two control strategies that -although can be applied to the same circuital structure of linear-assisted converter -are sensibly different. The first one -reported in previous literature -cancels completely the average current through the linear regulator in steady state to achieve a reduction of the losses. Thus the efficiency of the whole system increases and almost equals the one of the standalone switching converter. The proposed approach -in spite of a slightly increment of linear regulator’s losses -reduces the output ripple due to the crossover distortion of linear regulator output stage. -Convertidors continu-continu |
| Derechos: | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
| Tipo de documento: | Artículo - Versión publicada Objeto de conferencia |
| Editor: | Universidad Miguel Hernández de Elche |
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