{"id":233228,"date":"2015-05-28T22:00:00","date_gmt":"2015-05-28T22:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/convertisseur-dc-dc-sepic-elevateur-pour-lautomobile\/"},"modified":"2015-05-28T22:00:00","modified_gmt":"2015-05-28T22:00:00","slug":"convertisseur-dc-dc-sepic-elevateur-pour-lautomobile","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/convertisseur-dc-dc-sepic-elevateur-pour-lautomobile\/","title":{"rendered":"Convertisseur DC\/DC SEPIC\/\u00e9l\u00e9vateur pour l&rsquo;automobile"},"content":{"rendered":"<p>Ce convertisseur d&eacute;marre sur une gamme de tension d&rsquo;entr&eacute;e de 2,5 V &agrave; 32 V et, une fois d&eacute;marr&eacute;, fonctionne &agrave; partir de tensions d&rsquo;entr&eacute;e de 2,6 V &agrave; 50 V, ce qui convient aux applications dont les sources d&rsquo;entr&eacute;e vont d&rsquo;un seul &eacute;l&eacute;ment Li-ion aux tensions de batteries pour l&rsquo;automobile. Ce circuit peut &ecirc;tre configur&eacute; en convertisseur &eacute;l&eacute;vateur SEPIC ou Flyback. Sa fr&eacute;quence de commutation peut &ecirc;tre programm&eacute;e de 250 kHz &agrave; 1,5 MHz via une r&eacute;sistance unique, ce qui r&eacute;duit la taille des composants externes.<br \/>\nLe commutateur interne 2 A offre des rendements jusqu&rsquo;&agrave; 83% dans les applications en mode SEPIC. Une mise en &oelig;uvre unique, utilisant les deux broches d&rsquo;alimentation VIN et BIAS, assure un fonctionnement sur l&rsquo;alimentation la plus efficace, ce qui optimise le rendement dans de nombreuses conditions de fonctionnement.<br \/>\nCe composant 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 des convertisseurs en modes &eacute;l&eacute;vateur et &agrave; r&eacute;cup&eacute;ration d&rsquo;&eacute;nergie. Les p&eacute;riodes de r&eacute;initialisation et de temps mort de la minuterie chien de garde sont r&eacute;glables s&eacute;par&eacute;ment gr&acirc;ce &agrave; des condensateurs externes.<br \/>\nLes autres caract&eacute;ristiques de ce convertisseur comprennent un bo&icirc;tier compatible mode FMEA, un d&eacute;marrage progressif et une protection par arr&ecirc;t thermique. La combinaison de son bo&icirc;tier TSSOP-20E &agrave; performances thermiques renforc&eacute;es et de petits composants externes permettent d&rsquo;obtenir une empreinte tr&egrave;s compacte et de r&eacute;duire le co&ucirc;t de la r&eacute;alisation. En outre, il est propos&eacute; dans les classes de temp&eacute;ratures industrielles E et I dans la gamme de -40 &deg;C &agrave; +125 &deg;C. <\/p>\n<\/p>\n<p><a title=\"www.linear.com\/product\/LT8495\" target=\"_blank\" href=\"http:\/\/www.linear.com\/product\/LT8495\" rel=\"noopener\">www.linear.com\/product\/LT8495<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le convertisseur DC\/DC SEPIC\/\u00e9l\u00e9vateur  LT8495 de Linear Technology int\u00e8gre un commutateur 70 V, 2 A. Son tr\u00e8s faible courant de repos de seulement 9 \u00b5A le rend appropri\u00e9 \u00e0 l\u2019\u00e9lectronique automobile toujours sous tension. Sa r\u00e9initialisation \u00e0 la mise en marche (POR) et sa minuterie chien de garde offrent la fiabilit\u00e9 accrue requise dans les applications de l\u2019automobile et de l\u2019industrie.<\/p>\n","protected":false},"author":22,"featured_media":233229,"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-233228","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Convertisseur DC\/DC SEPIC\/\u00e9l\u00e9vateur pour l&#039;automobile ...<\/title>\n<meta name=\"description\" content=\"Le convertisseur DC\/DC SEPIC\/\u00e9l\u00e9vateur  LT8495 de Linear Technology int\u00e8gre un commutateur 70 V, 2 A. Son tr\u00e8s faible courant de repos de seulement 9 \u00b5A...\" \/>\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\/233228\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Convertisseur DC\/DC SEPIC\/\u00e9l\u00e9vateur pour l&#039;automobile\" \/>\n<meta property=\"og:description\" content=\"Le convertisseur DC\/DC SEPIC\/\u00e9l\u00e9vateur LT8495 de Linear Technology int\u00e8gre un commutateur 70 V, 2 A. Son tr\u00e8s faible courant de repos de seulement 9 \u00b5A le rend appropri\u00e9 \u00e0 l\u2019\u00e9lectronique automobile toujours sous tension. Sa r\u00e9initialisation \u00e0 la mise en marche (POR) et sa minuterie chien de garde offrent la fiabilit\u00e9 accrue requise dans les applications de l\u2019automobile et de l\u2019industrie.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/233228\/\" \/>\n<meta property=\"og:site_name\" content=\"EENewsEurope\" \/>\n<meta property=\"article:published_time\" content=\"2015-05-28T22:00:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ecinews.fr\/wp-content\/uploads\/import\/default\/files\/import\/eci7269_linear_lt8495.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1977\" \/>\n\t<meta property=\"og:image:height\" content=\"1412\" \/>\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\" 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