{"id":228918,"date":"2014-01-19T23:00:00","date_gmt":"2014-01-19T23:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/controleur-esclave-multiplicateur-de-phases-jusqua-300-a\/"},"modified":"2014-01-19T23:00:00","modified_gmt":"2014-01-19T23:00:00","slug":"controleur-esclave-multiplicateur-de-phases-jusqua-300-a","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/controleur-esclave-multiplicateur-de-phases-jusqua-300-a\/","title":{"rendered":"Contr\u00f4leur esclave multiplicateur de phases, jusqu\u2019\u00e0 300 A"},"content":{"rendered":"<p>Associ&eacute; &agrave; un contr&ocirc;leur ma&icirc;tre, ce circuit offre toutes les fonctions n&eacute;cessaires aux applications esclaves multiphases, incluant un partage pr&eacute;cis du courant entre les phases, m&ecirc;me pour les charges dynamiques. Les contr&ocirc;leurs ma&icirc;tres compatibles sont les LTC3866, LTC3875 et LTC3774 qui poss&egrave;dent tous une vraie gestion en mode courant et permettent l&#8217;emploi d&rsquo;inductances &agrave; faibles r&eacute;sistances DCR en continu aussi faible que 0,2milliohms. La mesure du courant s&rsquo;effectue sans r&eacute;sistance pour optimiser le rendement du convertisseur et accro&icirc;tre sa densit&eacute; de puissance.<br \/>\nFonctionnant sur une gamme de tensions d&rsquo;entr&eacute;e de 4,5 V &agrave; 38 V, ce contr&ocirc;leur g&eacute;n&egrave;re une tension de sortie fixe pouvant atteindre 5,5 V. Jusqu&rsquo;&agrave; 12 phases peuvent &ecirc;tre mises en parall&egrave;le et synchronis&eacute;es en opposition de phase afin de minimiser le filtrage. Il fonctionne &agrave; fr&eacute;quence fixe, de 250 kHz &agrave; 1MHz, ou peut &ecirc;tre synchronis&eacute; &agrave; une horloge externe. Sur la carte, les puissants contr&ocirc;leurs de grille de 1,1 ohm minimisent les pertes de commutations du MOSFET. Les seuils de limites d&rsquo;intensit&eacute; peuvent &ecirc;tre programm&eacute;s pour des tensions de 16 mV &agrave; 72 mV pour minimiser les pertes de puissance et fixer le point d&rsquo;amplitude maximum en cas de surintensit&eacute;.<br \/>\nEncapsul&eacute; en bo&icirc;tier QFN 28 broches, de 4 x 5 mm, ce composant inclut des fonctions suppl&eacute;mentaires telles que la s&eacute;lection du fonctionnement continu ou discontinu &agrave; faible charge, la programmation du contr&ocirc;le de d&eacute;rive de phase et une protection contre les surtensions. <\/p>\n<\/p>\n<p><a href=\"http:\/\/www.linear.com\/product\/ltc3874\" target=\"_blank\" title=\"www.linear.com\/product\/LTC3874\" rel=\"noopener\">www.linear.com\/product\/LTC3874<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Compl\u00e9tant les contr\u00f4leurs \u00e0 mode courant cr\u00eate et faible DCR, le contr\u00f4leur esclave, abaisseur, synchrone, deux phases LTC3874 de Linear Technology g\u00e9n\u00e8re des courants pouvant atteindre 300 A en augmentant le nombre de phases dans les applications multiphases. Ses applications incluent la distribution de puissance, les alimentations redondantes, les DSP et ASIC de puissance, etc.<\/p>\n","protected":false},"author":22,"featured_media":228919,"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-228918","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Contr\u00f4leur esclave multiplicateur de phases, jusqu\u2019\u00e0 300 A ...<\/title>\n<meta name=\"description\" content=\"Compl\u00e9tant les contr\u00f4leurs \u00e0 mode courant cr\u00eate et faible DCR, le contr\u00f4leur esclave, abaisseur, synchrone, deux phases LTC3874 de Linear Technology...\" \/>\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\/228918\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Contr\u00f4leur esclave multiplicateur de phases, jusqu\u2019\u00e0 300 A\" \/>\n<meta property=\"og:description\" content=\"Compl\u00e9tant les contr\u00f4leurs \u00e0 mode courant cr\u00eate et faible DCR, le contr\u00f4leur esclave, abaisseur, synchrone, deux phases LTC3874 de Linear Technology g\u00e9n\u00e8re des courants pouvant atteindre 300 A en augmentant le nombre de phases dans les applications multiphases. 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