{"id":233132,"date":"2015-05-18T22:00:00","date_gmt":"2015-05-18T22:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/des-alimentations-plus-efficaces-grace-a-des-controleurs-dsc-optimises\/"},"modified":"2015-05-18T22:00:00","modified_gmt":"2015-05-18T22:00:00","slug":"des-alimentations-plus-efficaces-grace-a-des-controleurs-dsc-optimises","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/des-alimentations-plus-efficaces-grace-a-des-controleurs-dsc-optimises\/","title":{"rendered":"Des alimentations plus efficaces gr\u00e2ce \u00e0 des contr\u00f4leurs DSC optimis\u00e9s"},"content":{"rendered":"<p>Avec leur fr&eacute;quence de commutation plus &eacute;lev&eacute;e, ces contr&ocirc;leurs rendent possible le d&eacute;veloppement d&rsquo;alimentations plus compactes offrant des densit&eacute;s plus &eacute;lev&eacute;es &agrave; un moindre co&ucirc;t. Par rapport aux DSC de la g&eacute;n&eacute;ration pr&eacute;c&eacute;dente, ils affichent un temps de latence deux fois moins &eacute;lev&eacute; lorsqu&rsquo;ils sont utilis&eacute;s avec un compensateur &agrave; 3 p&ocirc;les et 3 z&eacute;ros, et consomment jusqu&rsquo;&agrave; 80 % d&rsquo;&eacute;nergie en moins quelle que soit l&rsquo;application.<br \/>\nCette famille inclut des fonctionnalit&eacute;s avanc&eacute;es comme une m&eacute;moire Flash &agrave; mise &agrave; jour en fonctionnement particuli&egrave;rement utile pour assurer une grande disponibilit&eacute;, ainsi que pour les syst&egrave;mes dits &quot;Always-on&quot; destin&eacute;s &agrave; fonctionner en permanence. La fonctionnalit&eacute; de mise &agrave; jour automatique peut &ecirc;tre utilis&eacute;e pour modifier le firmware d&rsquo;une alimentation en fonctionnement, y compris le code de calcul d&rsquo;un compensateur actif, tout en continuant d&rsquo;assurer la compensation.<br \/>\nOptimis&eacute;e pour les alimentations num&eacute;riques, cette famille de DSC propose des mod&egrave;les en bo&icirc;tiers UQFN de 4 x 4 mm, actuellement les plus petits du march&eacute; et bien adapt&eacute;s pour les syst&egrave;mes &agrave; contraintes d&rsquo;espace. Les autres mod&egrave;les sont propos&eacute;s en diff&eacute;rents formats de bo&icirc;tiers dot&eacute;s de 28 &agrave; 64 broches.<br \/>\nParmi les autres caract&eacute;ristiques de cette famille, citons la pr&eacute;sence de jusqu&rsquo;&agrave; cinq convertisseurs A\/N 12 bits dot&eacute;s d&rsquo;un maximum de 22 entr&eacute;es analogiques, offrant un d&eacute;bit total de 16 000 millions d&rsquo;&eacute;chantillons par seconde (MSPS) avec une latence de conversion de 300 ns. Les contr&ocirc;leurs int&egrave;grent aussi des convertisseurs N\/A 12 bits associ&eacute;s &agrave; chacun des quatre comparateurs analogiques pour des syst&egrave;mes atteignant une pr&eacute;cision in&eacute;gal&eacute;e. Les deux amplificateurs &agrave; gain programmable int&eacute;gr&eacute;s peuvent &ecirc;tre utilis&eacute;s pour la mesure de courant et autres mesures de pr&eacute;cision. Gr&acirc;ce &agrave; l&rsquo;int&eacute;gration de ces amplificateurs analogiques directement dans le circuit, le nombre de composants externes est r&eacute;duit, ce qui repr&eacute;sente un gain sur le co&ucirc;t du syst&egrave;me et l&rsquo;espace occup&eacute; sur la carte.\n<\/p>\n<hr \/>\n<p>Dot&eacute;e de ces caract&eacute;ristiques et performances, cette famille de DSC convient un large &eacute;ventail d&rsquo;applications dont, entre autres, les alimentations AC\/DC et DC\/DC d&rsquo;appareils informatiques et de t&eacute;l&eacute;coms, les onduleurs solaires, l&rsquo;&eacute;clairage par LED, les lampes &agrave; d&eacute;charges &agrave; haute intensit&eacute; (HID), les chargeurs de batterie, les postes de soudage et projecteurs pour le march&eacute; industriel. Elle est &eacute;galement bien adapt&eacute;e pour les phares &agrave; LED et HID, et les convertisseurs DC\/DC pour le march&eacute; automobile.<br \/>\nLes composants de cette famille sont compatibles avec le kit de d&eacute;marrage MPLAB pour alimentation num&eacute;rique qui permet aux d&eacute;veloppeurs de les tester selon diff&eacute;rentes topologies populaires de conversion d&rsquo;&eacute;nergie num&eacute;rique. En outre, l&rsquo;outil de conception de compensateur num&eacute;rique propri&eacute;taire Digital Compensator Design Tool<em> <\/em>permet aux ing&eacute;nieurs de calculer les coefficients de compensateur optimum requis pour maximiser les performances de leurs syst&egrave;mes. <\/p>\n<\/p>\n<p><a href=\"http:\/\/www.microchip.com\/dsPIC33EP64GS506-051215a\" target=\"_blank\" title=\"www.microchip.com\/dsPIC33EP64GS506-051215a\" rel=\"noopener\">www.microchip.com\/dsPIC33EP64GS506-051215a<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Compos\u00e9e de 14 membres, la famille de contr\u00f4leurs de signal num\u00e9rique (DSC) dsPIC33EP \u00ab\u00a0GS\u00a0\u00bb de Microchip offre les performances n\u00e9cessaires pour faire tourner des algorithmes de commande non lin\u00e9aires, pr\u00e9dictifs et adaptatifs, plus complexes, \u00e0 des fr\u00e9quences de commutation plus \u00e9lev\u00e9es. Ces algorithmes avanc\u00e9s autorisent des modules d\u2019alimentation plus efficaces, dot\u00e9s de sp\u00e9cifications sup\u00e9rieures. <\/p>\n","protected":false},"author":22,"featured_media":233133,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[],"domains":[47],"ppma_author":[1149],"class_list":["post-233132","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Des alimentations plus efficaces gr\u00e2ce \u00e0 des contr\u00f4leurs DSC...<\/title>\n<meta name=\"description\" content=\"Compos\u00e9e de 14 membres, la famille de contr\u00f4leurs de signal num\u00e9rique (DSC) dsPIC33EP &quot;GS&quot; de Microchip offre les performances n\u00e9cessaires pour faire...\" \/>\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\/233132\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Des alimentations plus efficaces gr\u00e2ce \u00e0 des contr\u00f4leurs DSC optimis\u00e9s\" \/>\n<meta property=\"og:description\" content=\"Compos\u00e9e de 14 membres, la famille de contr\u00f4leurs de signal num\u00e9rique (DSC) dsPIC33EP &quot;GS&quot; de Microchip offre les performances n\u00e9cessaires pour faire tourner des algorithmes de commande non lin\u00e9aires, pr\u00e9dictifs et adaptatifs, plus complexes, \u00e0 des fr\u00e9quences de commutation plus \u00e9lev\u00e9es. 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