{"id":233756,"date":"2015-07-21T22:00:00","date_gmt":"2015-07-21T22:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/convertisseur-elevateur-sepic-70-v-2-a\/"},"modified":"2015-07-21T22:00:00","modified_gmt":"2015-07-21T22:00:00","slug":"convertisseur-elevateur-sepic-70-v-2-a","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/convertisseur-elevateur-sepic-70-v-2-a\/","title":{"rendered":"Convertisseur \u00e9l\u00e9vateur\/SEPIC 70 V, 2 A"},"content":{"rendered":"<p>Ce convertisseur d&eacute;marre sur la gamme de tensions d&rsquo;entr&eacute;e de 2,5 V &agrave; 32 V et, une fois d&eacute;marr&eacute;, peut fonctionner &agrave; partir de tensions d&rsquo;entr&eacute;e de 1 V &agrave; 60 V. De ce fait, il convient aux applications dont les sources d&rsquo;entr&eacute;e vont d&rsquo;un seul &eacute;l&eacute;ment Li-ion jusqu&rsquo;aux tensions de batteries pour l&rsquo;automobile. Ce circuit peut &ecirc;tre configur&eacute; en convertisseur &eacute;l&eacute;vateur, SEPIC ou flyback. Gr&acirc;ce &agrave; une r&eacute;sistance unique, sa fr&eacute;quence de commutation peut &ecirc;tre programm&eacute;e entre 250 kHz et 1,5 MHz, ce qui permet aux concepteurs de r&eacute;duire la taille des composants externes. La combinaison d&rsquo;un bo&icirc;tier TSSOP-20E &agrave; performances thermiques renforc&eacute;es, ou QFN-20 de 4 x 4mm, et de petits composants externes autorise une empreinte tr&egrave;s compacte et minimise le co&ucirc;t de la r&eacute;alisation.<br \/>\nLe commutateur interne 2 A\/70 V offre des rendements &eacute;lev&eacute;s, allant jusqu&rsquo;&agrave; 83% dans les applications en mode SEPIC. Une mise en &oelig;uvre unique, utilisant deux broches d&rsquo;alimentation (Vin et BIAS), donne au composant la possibilit&eacute; de fonctionner sur l&rsquo;alimentation la plus efficace, ce qui optimise le rendement dans de nombreuses conditions de fonctionnement.<br \/>\nLe convertisseur peut fonctionner sur des tensions d&rsquo;entr&eacute;e jusqu&rsquo;&agrave; 60 V dans les architectures SEPIC et jusqu&rsquo;&agrave; 32 V avec une protection en modes &eacute;l&eacute;vateur et flyback. Les autres caract&eacute;ristiques comprennent un bo&icirc;tier compatible FMEA (TSSOP-20E), un indicateur de tension &eacute;tablie, un d&eacute;marrage progressif et une protection par arr&ecirc;t thermique programmables.<br \/>\nCe composant est propos&eacute; en classes de temp&eacute;ratures industrielles de -40 &deg;C &agrave; +125 &deg;C et hautes temp&eacute;ratures de -40 &deg;C &agrave; +150 &deg;C. <\/p>\n<\/p>\n<p><a href=\"http:\/\/www.linear.com\/product\/LT8494\" target=\"_blank\" title=\"www.linear.com\/product\/LT8494\" rel=\"noopener\">www.linear.com\/product\/LT8494<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Fonctionnant en fr\u00e9quence fixe et \u00e0 mode courant,  le convertisseur DC\/DC \u00e9l\u00e9vateur \/ SEPIC LT8494 de Linear Technology int\u00e8gre un commutateur de 70 V, 2 A. De plus, son tr\u00e8s faible courant de repos de seulement 7 \u00b5A le rend appropri\u00e9 \u00e0 l\u2019\u00e9lectronique automobile ou autres machines industrielles aliment\u00e9es sur batterie, toujours sous tension.<\/p>\n","protected":false},"author":22,"featured_media":233757,"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-233756","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Convertisseur \u00e9l\u00e9vateur\/SEPIC 70 V, 2 A ...<\/title>\n<meta name=\"description\" content=\"Fonctionnant en fr\u00e9quence fixe et \u00e0 mode courant,  le convertisseur DC\/DC \u00e9l\u00e9vateur \/ SEPIC LT8494 de Linear Technology int\u00e8gre un commutateur de 70 V,...\" \/>\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\/233756\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Convertisseur \u00e9l\u00e9vateur\/SEPIC 70 V, 2 A\" \/>\n<meta property=\"og:description\" content=\"Fonctionnant en fr\u00e9quence fixe et \u00e0 mode courant, le convertisseur DC\/DC \u00e9l\u00e9vateur \/ SEPIC LT8494 de Linear Technology int\u00e8gre un commutateur de 70 V, 2 A. De plus, son tr\u00e8s faible courant de repos de seulement 7 \u00b5A le rend appropri\u00e9 \u00e0 l\u2019\u00e9lectronique automobile ou autres machines industrielles aliment\u00e9es sur batterie, toujours sous tension.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/233756\/\" \/>\n<meta property=\"og:site_name\" content=\"EENewsEurope\" \/>\n<meta property=\"article:published_time\" content=\"2015-07-21T22:00:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cdn.eenewseurope.com\/wp-content\/uploads\/import\/default\/files\/import\/eci7330_linear_lt8494.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1994\" \/>\n\t<meta property=\"og:image:height\" content=\"1424\" \/>\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\" 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