{"id":204292,"date":"2016-07-21T00:00:00","date_gmt":"2016-07-21T00:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/capteurs-de-courant-a-sensibilite-elevee\/"},"modified":"2016-07-21T00:00:00","modified_gmt":"2016-07-21T00:00:00","slug":"capteurs-de-courant-a-sensibilite-elevee","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/capteurs-de-courant-a-sensibilite-elevee\/","title":{"rendered":"Capteurs de courant \u00e0 sensibilit\u00e9 \u00e9lev\u00e9e"},"content":{"rendered":"<p>Fonctionnant \u00e0 partir d&rsquo;une alimentation 5 V, ces capteurs tout int\u00e9gr\u00e9s offrent une sensibilit\u00e9 en courant pouvant descendre \u00e0 26.7 mV\/A et une gamme de mesure lin\u00e9aire de courant jusqu&rsquo;\u00e0 \u00b175 A, correspondant \u00e0 un courant de 30 A<sub>eff<\/sub>. Encapsul\u00e9s dans des bo\u00eetiers SO8 et SO16, ils pr\u00e9sentent des pertes r\u00e9sistives extr\u00eamement faibles, de 0.8 mohm pour le SO8 et 0.7 mohm pour le SO16, des valeurs d&rsquo;isolement nominales \u00e9lev\u00e9es, respectivement de 2.1 kV<sub>eff<\/sub> et 2.5 kV<sub>eff<\/sub>, ainsi qu&rsquo;une r\u00e9ponse tr\u00e8s rapide, inf\u00e9rieure \u00e0 5 \u00b5s. La sortie capteur de chaque CI est \u00e9talonn\u00e9e en usine pour une certaine plage sp\u00e9cifique, et compens\u00e9e pour une stabilit\u00e9 optimale en fonction de la temp\u00e9rature, pendant toute la dur\u00e9e de vie, afin de maintenir la pr\u00e9cision \u00e0 long terme.<\/p>\n<p>Gr\u00e2ce \u00e0 la possibilit\u00e9 d&rsquo;\u00e9talonnage du z\u00e9ro et de la sensibilit\u00e9 en usine, tous ces dispositifs g\u00e9n\u00e8rent une sortie analogique lin\u00e9aire, proportionnelle au courant passant dans leur leadframe. \u00c0 l&rsquo;int\u00e9rieur du bo\u00eetier, le champ magn\u00e9tique induit par le passage du courant est d\u00e9tect\u00e9 de mani\u00e8re diff\u00e9rentielle par deux jeux de plaques Hall. Cette configuration combat la diaphonie et l&rsquo;effet des champs ext\u00e9rieurs. L&rsquo;\u00e9troite proximit\u00e9 des plaques Hall avec le conducteur du courant assure l&rsquo;int\u00e9grit\u00e9 du signal alors qu\u2019une couche tr\u00e8s isolante s\u00e9pare le primaire du secondaire.<\/p>\n<p>Ces capteurs pr\u00e9sentent une grande robustesse vis-\u00e0-vis des champs externes, un point qui va devenir encore plus critique avec la densit\u00e9 croissante des circuits \u00e9lectroniques de puissance. N\u00e9anmoins, leur v\u00e9ritable atout est la quasi-absence d&rsquo;hyst\u00e9r\u00e9sis magn\u00e9tique observable qui tient \u00e0 l&rsquo;absence de concentrateur ferromagn\u00e9tique. En outre, ils offrent une plage de temp\u00e9rature op\u00e9rationnelle de -40 \u00b0C \u00e0 +125 \u00b0C et sont conformes IEC-60950. En outre, les mod\u00e8les en bo\u00eetier SO16 r\u00e9pondent \u00e9galement \u00e0 l\u2019UL1577.<\/p>\n<hr \/>\n<p>\u00ab\u00a0Il y a un besoin croissant de syst\u00e8mes compacts de supervision de courant et d&rsquo;\u00e9nergie, en milieu domestique comme en milieu industriel, alors que de nouvelles l\u00e9gislations voient le jour, visant \u00e0 am\u00e9liorer les rendements tout en r\u00e9duisant les co\u00fbts \u00e9nerg\u00e9tiques,\u00a0\u00bb explique Bruno Boury, Responsable ligne de produits Capteurs magn\u00e9tiques chez Melexis. \u00ab\u00a0Ces dispositifs rapides fixent de nouveaux standards en d\u00e9tection de courant. Gr\u00e2ce \u00e0 leurs format compact regroupant la d\u00e9tection et le m\u00e9canisme d&rsquo;isolement sur quelques dizaines de millim\u00e8tres carr\u00e9s seulement, avec des pertes ohmiques tr\u00e8s faibles, des fonctions de compensation de d\u00e9rive thermique et une immunit\u00e9 \u00e0 la diaphonie, ils peuvent \u00eatre utilis\u00e9s au sein de syst\u00e8mes \u00e9lectroniques tr\u00e8s denses, tout en offrant des niveaux de pr\u00e9cision \u00e9lev\u00e9s.\u00a0\u00bb<\/p>\n<p>Les principales applications vis\u00e9es par ces capteurs qui supportent les mesures de courant DC et AC, sont, notamment, la supervision de pr\u00e9cision du courant des unit\u00e9s d&rsquo;alimentation des fermes de serveurs et des \u00ab\u00a0data centers\u00a0\u00bb, des alimentations et des convertisseurs, des contr\u00f4leurs de charge \u00e0 la demande, des compteurs \u00e9lectriques domestiques intelligents, des convertisseurs d&rsquo;\u00e9nergie solaire et des commandes moteur en g\u00e9n\u00e9ral.<\/p>\n<p><a href=\"http:\/\/www.melexis.com\/\" target=\"_blank\" rel=\"noopener\">www.melexis.com<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Avec l\u2019introduction de la famille MLX91210, Melexis \u00e9tend son catalogue d\u00e9j\u00e0 tr\u00e8s complet de capteurs de courant \u00e0 effet Hall. Ces circuits compacts en bo\u00eetier standard offrent une bande passante de 100 kHz, une des meilleures pr\u00e9cisions du march\u00e9 actuel et une r\u00e9silience exceptionnelle \u00e0 la diaphonie (crosstalk).<\/p>\n","protected":false},"author":9,"featured_media":204293,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[910],"domains":[47],"ppma_author":[1141],"class_list":["post-204292","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","tag-sensing-conditioning-fr","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Capteurs de courant \u00e0 sensibilit\u00e9 \u00e9lev\u00e9e ...<\/title>\n<meta name=\"description\" content=\"Avec l\u2019introduction de la famille MLX91210, Melexis \u00e9tend son catalogue d\u00e9j\u00e0 tr\u00e8s complet de capteurs de courant \u00e0 effet Hall. Ces circuits compacts...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/204292\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Capteurs de courant \u00e0 sensibilit\u00e9 \u00e9lev\u00e9e\" \/>\n<meta property=\"og:description\" content=\"Avec l\u2019introduction de la famille MLX91210, Melexis \u00e9tend son catalogue d\u00e9j\u00e0 tr\u00e8s complet de capteurs de courant \u00e0 effet Hall. Ces circuits compacts en bo\u00eetier standard offrent une bande passante de 100 kHz, une des meilleures pr\u00e9cisions du march\u00e9 actuel et une r\u00e9silience exceptionnelle \u00e0 la diaphonie (crosstalk).\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/204292\/\" \/>\n<meta property=\"og:site_name\" content=\"EENewsEurope\" \/>\n<meta property=\"article:published_time\" content=\"2016-07-21T00:00:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ecinews.fr\/wp-content\/uploads\/import\/default\/files\/sites\/default\/files\/images\/eci7979_melexis_mlxpr58_r.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"768\" \/>\n\t<meta property=\"og:image:height\" content=\"559\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Alain Dieul\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" 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