{"id":107842,"date":"2018-09-30T22:21:57","date_gmt":"2018-09-30T22:21:57","guid":{"rendered":"https:\/\/\/controleur-elevateur-60v-double-2-phases\/"},"modified":"2018-09-30T22:21:57","modified_gmt":"2018-09-30T22:21:57","slug":"controleur-elevateur-60v-double-2-phases","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/controleur-elevateur-60v-double-2-phases\/","title":{"rendered":"Contr\u00f4leur \u00e9l\u00e9vateur, 60V, double, 2 phases"},"content":{"rendered":"

Une application typique du LTC7840 est la conversion d\u2019une tension d\u2019entr\u00e9e de 12V en 48V avec le premier canal et le second canal \u00e9levant le 48V en 240V, avec un courant de sortie pouvant atteindre 700mA, ce qui le rend appropri\u00e9 aux applications de l\u2019automobile, industrielles et m\u00e9dicales.<\/p>\n

Le LTC7840 fonctionne sur une plage de tension d\u2019entr\u00e9e de 5,5V \u00e0 60V et r\u00e9gule les tensions de sortie qui sont limit\u00e9es par le choix des composants externes. Jusqu\u2019\u00e0 4 \u00e9tages de puissance peuvent \u00eatre verrouill\u00e9s en opposition de phase afin de minimiser les demandes en filtrage d\u2019entr\u00e9e et de sortie. Les MOSFET externes commutent \u00e0 une fr\u00e9quence fixe, programmable de 50kHz \u00e0 425kHz et peuvent \u00eatre synchronis\u00e9s \u00e0 une horloge externe. Chacun des canaux du LTC7840 peut \u00eatre \u00e9galement configur\u00e9 en topologie SEPIC ou Flyback, ce qui le rend tr\u00e8s souple. Les caract\u00e9ristiques suppl\u00e9mentaires comprennent le r\u00e9glage d\u2019un rapport cyclique maximum, le r\u00e9glage de la dur\u00e9e de conduction minimale, une protection en cas de surcharge et de surtension ainsi qu\u2019un contr\u00f4le en mode courant cr\u00eate.<\/p>\n

Le LTC7840 est disponible, en stock, en deux bo\u00eetiers de 28 broches, \u00e0 performances thermiques renforc\u00e9es : QFN, faible profil, 4mm x 5mm, et TSSOP. Les classes E et I sont sp\u00e9cifi\u00e9es pour fonctionner sur une plage de temp\u00e9rature de jonction de \u201340\u00b0C \u00e0 125\u00b0C, et la classe H pour fonctionner de \u201340\u00b0C \u00e0150\u00b0C. <\/p>\n

www.analog.com\/LTC7840<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

Analog Devices annonce le Power by Linear LTC7840, un contr\u00f4leur \u00e9l\u00e9vateur 2 phases, non synchrone, qui contr\u00f4le deux \u00e9tages de transistors de puissance MOSFET canal N externes. Il peut \u00eatre configur\u00e9 en r\u00e9gulateur en mode \u00e9l\u00e9vateur \u00e0 sortie unique ou double ou pour des tensions plus \u00e9lev\u00e9es ; la sortie du premier canal peut alimenter l\u2019entr\u00e9e du second canal, ce qui autorise une tension de sortie qui d\u00e9passe plusieurs centaines de volts.<\/p>\n","protected":false},"author":9,"featured_media":107843,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[],"domains":[47],"ppma_author":[1141],"class_list":["post-107842","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"Contr\u00f4leur \u00e9l\u00e9vateur, 60V, double, 2 phases ...<\/title>\n<meta name=\"description\" content=\"Analog Devices annonce le Power by Linear LTC7840, un contr\u00f4leur \u00e9l\u00e9vateur 2 phases, non synchrone, qui contr\u00f4le deux \u00e9tages de transistors de puissance...\" \/>\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\/107842\/\" \/>\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, 60V, double, 2 phases\" \/>\n<meta property=\"og:description\" content=\"Analog Devices annonce le Power by Linear LTC7840, un contr\u00f4leur \u00e9l\u00e9vateur 2 phases, non synchrone, qui contr\u00f4le deux \u00e9tages de transistors de puissance MOSFET canal N externes. Il peut \u00eatre configur\u00e9 en r\u00e9gulateur en mode \u00e9l\u00e9vateur \u00e0 sortie unique ou double ou pour des tensions plus \u00e9lev\u00e9es ; la sortie du premier canal peut alimenter l\u2019entr\u00e9e du second canal, ce qui autorise une tension de sortie qui d\u00e9passe plusieurs centaines de volts.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/107842\/\" \/>\n<meta property=\"og:site_name\" content=\"EENewsEurope\" \/>\n<meta property=\"article:published_time\" content=\"2018-09-30T22:21:57+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ecinews.fr\/wp-content\/uploads\/import\/default\/files\/sites\/default\/files\/images\/eci6609_analog_ltc7840.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=\"Alain Dieul\" \/>\n<meta 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