{"id":230600,"date":"2014-07-24T22:00:00","date_gmt":"2014-07-24T22:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/controleur-elevateur-synchrone-60-v-a-rendement-eleve\/"},"modified":"2014-07-24T22:00:00","modified_gmt":"2014-07-24T22:00:00","slug":"controleur-elevateur-synchrone-60-v-a-rendement-eleve","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/controleur-elevateur-synchrone-60-v-a-rendement-eleve\/","title":{"rendered":"Contr\u00f4leur \u00e9l\u00e9vateur synchrone 60 V \u00e0 rendement \u00e9lev\u00e9"},"content":{"rendered":"<p>Ce haut rendement le rend appropri&eacute; dans les applications de l&rsquo;automobile, de l&rsquo;industrie et du m&eacute;dical n&eacute;cessitant une faible dissipation thermique dans une mise en &oelig;uvre de dimension r&eacute;duite.<br \/>\nFonctionnant sur une gamme de tensions d&rsquo;entr&eacute;e de 4,5 V &agrave; 60 V avec le maintien du fonctionnement jusqu&rsquo;&agrave; 2,3V apr&egrave;s d&eacute;marrage, ce contr&ocirc;leur peut r&eacute;guler une tension de sortie jusqu&rsquo;&agrave; 60 V. Son faible courant de repos de 28 &micro;A en mode veille accro&icirc;t l&rsquo;autonomie des applications aliment&eacute;es sur batterie tout en maintenant la r&eacute;gulation de la tension de sortie. Les puissants contr&ocirc;leurs de grille du MOSFET canal N de 1,2 ohms sur la carte peuvent rapidement activer de gros MOSFET, ce qui r&eacute;duit les pertes de commutation et autorise une intensit&eacute; de sortie jusqu&rsquo;&agrave; 10 A.<br \/>\nCe circuit poss&egrave;de une protection bas&eacute;e sur une limitation de l&rsquo;intensit&eacute;, r&eacute;glable cycle par cycle, et peut utiliser une r&eacute;sistance de mesure de courant ou la chute de tension aux bornes de l&rsquo;inductance (DCR) pour la mesure de l&rsquo;intensit&eacute;. Dans les applications o&ugrave; la tension d&rsquo;entr&eacute;e peut d&eacute;passer celle de sortie r&eacute;gul&eacute;e, il permet au MOSFET synchrone de rester en fonctionnement continu de telle fa&ccedil;on que la tension de sortie suive celle d&rsquo;entr&eacute;e avec un minimum de pertes de puissance. Son architecture &agrave; mode courant autorise une fr&eacute;quence de commutation dans la gamme 50 kHz &agrave; 900 kHz ou la synchronisation &agrave; une horloge externe entre 75 kHz et 850 kHz. De plus, ce composant poss&egrave;de un d&eacute;marrage progressif r&eacute;glable, un indicateur de tension &eacute;tablie et maintient une pr&eacute;cision de la tension de r&eacute;f&eacute;rence de &plusmn;1 sur toute la gamme de temp&eacute;ratures de jonction.<br \/>\nEncapsul&eacute; en bo&icirc;tiers TSSOP de 20 broches et QFN de 24 broches, de 4 x 4mm, ce contr&ocirc;leur est propos&eacute; avec un fonctionnement de -40 &deg;C &agrave; +125 &deg;C pour les classes de temp&eacute;ratures &eacute;tendues et industrielles, de -40 &deg;C &agrave; +150 &deg;C pour celle de l&rsquo;automobile et de &#8209;55 &deg;C &agrave; 150 &deg;C pour le militaire.<\/p>\n<\/p>\n<p><a href=\"http:\/\/www.linear.com\/product\/ltc3769\" target=\"_blank\" title=\"www.linear.com\/product\/LTC3769\" rel=\"noopener\">www.linear.com\/product\/LTC3769<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le contr\u00f4leur DC\/DC \u00e9l\u00e9vateur synchrone LTC3769 de Linear Technology remplace la diode \u00e9l\u00e9vatrice par un MOSFET canal N de fort rendement, ce qui accro\u00eet le rendement global et optimise les possibilit\u00e9s d\u2019intensit\u00e9 en sortie. Ainsi, il peut g\u00e9n\u00e9rer jusqu\u2019\u00e0 5 A sous 24 V en sortie \u00e0 partir d\u2019une tension d\u2019entr\u00e9e de 12 V avec un rendement jusqu\u2019\u00e0 98%.<\/p>\n","protected":false},"author":22,"featured_media":230601,"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-230600","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Contr\u00f4leur \u00e9l\u00e9vateur synchrone 60 V \u00e0 rendement \u00e9lev\u00e9 ...<\/title>\n<meta name=\"description\" content=\"Le contr\u00f4leur DC\/DC \u00e9l\u00e9vateur synchrone LTC3769 de Linear Technology remplace la diode \u00e9l\u00e9vatrice par un MOSFET canal N de fort rendement, ce qui...\" \/>\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\/230600\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Contr\u00f4leur \u00e9l\u00e9vateur synchrone 60 V \u00e0 rendement \u00e9lev\u00e9\" \/>\n<meta property=\"og:description\" content=\"Le contr\u00f4leur DC\/DC \u00e9l\u00e9vateur synchrone LTC3769 de Linear Technology remplace la diode \u00e9l\u00e9vatrice par un MOSFET canal N de fort rendement, ce qui accro\u00eet le rendement global et optimise les possibilit\u00e9s d\u2019intensit\u00e9 en sortie. Ainsi, il peut g\u00e9n\u00e9rer jusqu\u2019\u00e0 5 A sous 24 V en sortie \u00e0 partir d\u2019une tension d\u2019entr\u00e9e de 12 V avec un rendement jusqu\u2019\u00e0 98%.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/230600\/\" \/>\n<meta property=\"og:site_name\" content=\"EENewsEurope\" \/>\n<meta property=\"article:published_time\" content=\"2014-07-24T22:00:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ecinews.fr\/wp-content\/uploads\/import\/default\/files\/import\/eci6924_linear_lt3669.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2054\" \/>\n\t<meta property=\"og:image:height\" content=\"1467\" \/>\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\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"eeNews Europe\" 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