{"id":231788,"date":"2014-12-16T23:00:00","date_gmt":"2014-12-16T23:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/solution-darret-de-surtensions-conforme-mil-std-1275d\/"},"modified":"2014-12-16T23:00:00","modified_gmt":"2014-12-16T23:00:00","slug":"solution-darret-de-surtensions-conforme-mil-std-1275d","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/solution-darret-de-surtensions-conforme-mil-std-1275d\/","title":{"rendered":"Solution d\u2019arr\u00eat de surtensions conforme MIL-STD-1275D"},"content":{"rendered":"<p>Confront&eacute; &agrave; des signaux de surtension s&eacute;v&egrave;re, de pics et d&rsquo;ondulation sp&eacute;cifi&eacute;s dans la norme MIL-STD-1275D, cette solution d&rsquo;arr&ecirc;t limite la tension de sortie &agrave; la valeur de s&eacute;curit&eacute; de 44 V. Pour la plupart des applications, satisfaire &agrave; ce standard est aussi simple que de placer ce circuit devant un composant acceptant 44 V.<br \/>\nLa solution utilise les circuits int&eacute;gr&eacute;s d&rsquo;arr&ecirc;t de surtensions LTC4366 et LT4363 qui contr&ocirc;lent des MOSFET canal N en s&eacute;rie, ce qui contribue &agrave; r&eacute;duire la taille de l&rsquo;application et le co&ucirc;t par rapport aux circuits parall&egrave;les traditionnels qui emploient de gros condensateurs, des fusibles, des inductances et des suppresseurs de surtensions.<br \/>\nLe circuit d&rsquo;arr&ecirc;t est con&ccedil;u pour supporter des surtensions jusqu&rsquo;&agrave; &plusmn;250 V en entr&eacute;e et pour produire un courant de 4 A minimum &agrave; la charge en toute condition, sauf en cas d&rsquo;ondulation de &plusmn;7 V o&ugrave; l&rsquo;intensit&eacute; disponible est alors r&eacute;duite &agrave; 2,8 A. Les MOSFET canal N sont prot&eacute;g&eacute;s contre les surcharges par une limitation du courant. Le circuit est arr&ecirc;t&eacute; apr&egrave;s temporisation en cas de conditions soutenues de surtension ou de surintensit&eacute; et red&eacute;marre automatiquement apr&egrave;s un cycle de refroidissement. Des circuits de protection thermique arr&ecirc;tent le LT4363 par le contr&ocirc;le du MOSFET quand sa temp&eacute;rature d&eacute;passe 105 &deg;C.<br \/>\nCette carte d&rsquo;&eacute;valuation offre quatre options d&rsquo;assemblage d&rsquo;indice A &agrave; D en fonction du courant maximum dans la charge et la possibilit&eacute; de maintien de l&rsquo;alimentation lors d&rsquo;un pic de 100 V de 500 ms. La BOM reste toutefois r&eacute;duite pour ces options en &eacute;liminant les caract&eacute;ristiques de protection inutiles. Actuellement, seule l&rsquo;option compl&egrave;te DC2150A-C est propos&eacute;e. <\/p>\n<\/p>\n<p><a href=\"http:\/\/www.linear.com\/demo\/dc2150a\" target=\"_blank\" title=\"www.linear.com\/demo\/DC2150A\" rel=\"noopener\">www.linear.com\/demo\/DC2150A<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Linear Technology annonce la disponibilit\u00e9 de la solution d\u2019arr\u00eat d\u2019urgence conforme \u00e0 la norme MIL-STD-1275D, en d\u00e9monstration sur sa carte d\u2019\u00e9valuation DC2150A. La MIL-STD-1275D est un standard cr\u00e9\u00e9 par le d\u00e9partement de la D\u00e9fense des Etats Unis qui sp\u00e9cifie les caract\u00e9ristiques de l\u2019\u00e9tat permanent et de surtensions d\u2019une alimentation continue 28 V d\u2019un v\u00e9hicule militaire de terrain. <\/p>\n","protected":false},"author":22,"featured_media":231789,"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-231788","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Solution d\u2019arr\u00eat de surtensions conforme MIL-STD-1275D ...<\/title>\n<meta name=\"description\" content=\"Linear Technology annonce la disponibilit\u00e9 de la solution d\u2019arr\u00eat d\u2019urgence conforme \u00e0 la norme MIL-STD-1275D, en d\u00e9monstration sur sa carte...\" \/>\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\/231788\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Solution d\u2019arr\u00eat de surtensions conforme MIL-STD-1275D\" \/>\n<meta property=\"og:description\" content=\"Linear Technology annonce la disponibilit\u00e9 de la solution d\u2019arr\u00eat d\u2019urgence conforme \u00e0 la norme MIL-STD-1275D, en d\u00e9monstration sur sa carte d\u2019\u00e9valuation DC2150A. La MIL-STD-1275D est un standard cr\u00e9\u00e9 par le d\u00e9partement de la D\u00e9fense des Etats Unis qui sp\u00e9cifie les caract\u00e9ristiques de l\u2019\u00e9tat permanent et de surtensions d\u2019une alimentation continue 28 V d\u2019un v\u00e9hicule militaire de terrain.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/231788\/\" \/>\n<meta property=\"og:site_name\" content=\"EENewsEurope\" \/>\n<meta property=\"article:published_time\" content=\"2014-12-16T23:00:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cdn.eenewseurope.com\/wp-content\/uploads\/import\/default\/files\/import\/eci7077_linear_dc2150a_r.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2100\" \/>\n\t<meta property=\"og:image:height\" content=\"1500\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"eeNews Europe\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" 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