{"id":107902,"date":"2018-10-01T22:31:44","date_gmt":"2018-10-01T22:31:44","guid":{"rendered":"https:\/\/\/controleur-abaisseur-elevateur-bidirectionnel-rendement-98\/"},"modified":"2018-10-01T22:31:44","modified_gmt":"2018-10-01T22:31:44","slug":"controleur-abaisseur-elevateur-bidirectionnel-rendement-98","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/controleur-abaisseur-elevateur-bidirectionnel-rendement-98\/","title":{"rendered":"Contr\u00f4leur abaisseur-\u00e9l\u00e9vateur, bidirectionnel, rendement 98%"},"content":{"rendered":"<p>Le LT8708\/-1 fonctionne sur une tension d\u2019entr\u00e9e qui peut \u00eatre sup\u00e9rieure, inf\u00e9rieure ou \u00e9gale \u00e0 la tension de sortie, et convient ainsi aux syst\u00e8mes \u00e0 deux batteries 12V, 24V ou 48V que l\u2019on rencontre g\u00e9n\u00e9ralement dans les v\u00e9hicules \u00e9lectriques et hybrides. Il fonctionne \u00e0 partir de deux batteries et emp\u00eache l\u2019arr\u00eat du syst\u00e8me en cas de d\u00e9faillance de l\u2019une des batteries. Le LT8708\/-1 peut \u00eatre \u00e9galement utilis\u00e9 dans les syst\u00e8mes \u00e0 deux batteries 48V\/12V et 48V\/24V.<\/p>\n<p>Le LT8708\/-1&nbsp;fonctionne avec une seule inductance sur la plage de tension d\u2019entr\u00e9e, de 2,8V \u00e0 80V, et peut g\u00e9n\u00e9rer une tension de sortie de 1,3V \u00e0 80V, pour une puissance de plusieurs kilowatts d\u00e9pendant du choix des composants externes et du nombre de phases. Il simplifie la conversion de puissance bidirectionnelle dans les syst\u00e8mes de sauvegarde \u00e0 batterie\/ condensateur qui requi\u00e8rent une r\u00e9gulation de VOUT, VIN, et\/ou IOUT, IIN, \u00e0 la fois en direct ou&nbsp;en inverse.&nbsp;Ces six formes de r\u00e9gulation ind\u00e9pendantes permettent l\u2019emploi de ce composant dans de multiples applications.<\/p>\n<p>Le LT8708-1 est utilis\u00e9 en parall\u00e8le avec le LT8708 pour accro\u00eetre la puissance et le nombre de phases. Le LT8708-1 fonctionne toujours en esclave du LT8708 ma\u00eetre, peut \u00eatre mis en opposition de phase et peut fournir la m\u00eame puissance que le ma\u00eetre. Un ou plusieurs esclaves peuvent \u00eatre connect\u00e9s \u00e0 un seul ma\u00eetre, ce qui accro\u00eet de fa\u00e7on proportionnelle les capacit\u00e9s de puissance et de courant du syst\u00e8me.<br \/>\nUne autre application consiste en une tension d\u2019entr\u00e9e pour alimenter une charge, cette m\u00eame tension d\u2019entr\u00e9e \u00e9tant utilis\u00e9e pour l\u2019alimentation d\u2019un circuit LT8708\/-1 qui charge une batterie ou une batterie de supercondensateurs. Si la tension d\u2019entr\u00e9e dispara\u00eet, la charge maintient la puissance en provenance de la batterie ou des supercondensateurs, sans interruption, gr\u00e2ce \u00e0 la fonction bidirectionnelle du LT8708.<\/p>\n<p>Les courants direct et inverse peuvent \u00eatre contr\u00f4l\u00e9s et limit\u00e9s pour les entr\u00e9es et sorties du convertisseur. Les limites des quatre courants (direct d\u2019entr\u00e9e, inverse d\u2019entr\u00e9e, direct de sortie et inverse de sortie) peuvent \u00eatre fix\u00e9es s\u00e9par\u00e9ment en utilisant quatre r\u00e9sistances. En association avec la broche&nbsp;DIR (direction), la puce peut \u00eatre configur\u00e9e pour g\u00e9n\u00e9rer de l\u2019\u00e9nergie de VIN&nbsp;\u00e0 VOUT&nbsp;ou de VOUT&nbsp;\u00e0 VIN,&nbsp;ce qui convient aux syst\u00e8mes de l\u2019automobile, du solaire, des t\u00e9l\u00e9communications et aliment\u00e9s sur batterie.<\/p>\n<p><a href=\"http:\/\/www.analog.com\/LT8708\">www.analog.com\/LT8708<\/a>&nbsp;<\/p>\n<h3 class=\"title\"><a href=\"http:\/\/www.electronique-eci.com\/news\/analog-devices-leve-le-voile-sur-ses-solutions-dinfrastructure-pour-la-5g\">Analog Devices l\u00e8ve le voile sur ses solutions d\u2019infrastructure pour la 5G<\/a><\/h3>\n<h3 class=\"title\"><a href=\"http:\/\/www.electronique-eci.com\/news\/controleur-elevateur-60v-double-2-phases\">Contr\u00f4leur \u00e9l\u00e9vateur, 60V, double, 2 phases<\/a><\/h3>\n<h3 class=\"title\"><a href=\"http:\/\/www.electronique-eci.com\/news\/superviseurs-de-precision-05-pour-des-composants-tres-basse-tension\">Superviseurs de pr\u00e9cision \u00b10.5% pour des composants tr\u00e8s basse tension<\/a><\/h3>\n","protected":false},"excerpt":{"rendered":"<p>Analog Devices annonce le Power by Linear LT8708\/-1, un contr\u00f4leur r\u00e9gulateur \u00e0 d\u00e9coupage, abaisseur- \u00e9l\u00e9vateur, bidirectionnel, de rendement 98%, qui fonctionne \u00e0 partir de deux batteries de m\u00eame tension, ce qui est appropri\u00e9 aux syst\u00e8mes d\u2019alimentation \u00e0 batterie redondante dans les v\u00e9hicules autonomes.<\/p>\n","protected":false},"author":9,"featured_media":107903,"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-107902","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Contr\u00f4leur abaisseur-\u00e9l\u00e9vateur, bidirectionnel, rendement 98% ...<\/title>\n<meta name=\"description\" content=\"Analog Devices annonce le Power by Linear LT8708\/-1, un contr\u00f4leur r\u00e9gulateur \u00e0 d\u00e9coupage, abaisseur- \u00e9l\u00e9vateur, bidirectionnel, de rendement 98%, qui...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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