{"id":143622,"date":"2017-09-24T23:31:44","date_gmt":"2017-09-24T23:31:44","guid":{"rendered":"https:\/\/\/controleur-dc-dc-42v-avec-un-courant-de-sortie-jusqua-10a\/"},"modified":"2017-09-24T23:31:44","modified_gmt":"2017-09-24T23:31:44","slug":"controleur-dc-dc-42v-avec-un-courant-de-sortie-jusqua-10a","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/controleur-dc-dc-42v-avec-un-courant-de-sortie-jusqua-10a\/","title":{"rendered":"Contr\u00f4leur DC\/DC, 42V, avec un courant de sortie jusqu\u2019\u00e0 10A"},"content":{"rendered":"<p>Ce composant remplace la diode de sortie par un MOSFET canal P, de haut rendement, pour accro\u00eetre le rendement et l\u2019intensit\u00e9 maximale du courant de sortie jusqu\u2019\u00e0 10A, rendant le LT8711 tr\u00e8s compatible avec une gamme \u00e9tendue d\u2019applications de l\u2019automobile, industrielles, solaires et d\u2019usage g\u00e9n\u00e9ral.<\/p>\n<p>Le LT8711 fonctionne sur plage de tension d\u2019entr\u00e9e, de 4,5V \u00e0 42V, et g\u00e9n\u00e8re une tension de sortie d\u00e9pendante du choix des composants externes. Le courant de repos de 15\u00b5A \u00e0 vide, la tension de sortie \u00e9tant en r\u00e9gulation, accro\u00eet la dur\u00e9e de fonctionnement des syst\u00e8mes aliment\u00e9s sur batterie. Le fonctionnement en Burst Mode<sup>\u00ae<\/sup> permet d\u2019obtenir un haut rendement \u00e0 de tr\u00e8s faibles charges tout en maintenant un bas niveau de tension d\u2019ondulation en sortie. Quand il est configur\u00e9 en mode abaisseur synchrone, le LT8711 peut fonctionner avec un rapport cyclique de 100%, une caract\u00e9ristique utile lorsqu\u2019il est aliment\u00e9 sur une batterie en train de se d\u00e9charger.<\/p>\n<p>&nbsp;Le LT8711 poss\u00e8de un circuit innovant sur la broche EN\/FBIN pour la r\u00e9gulation de la tension d\u2019entr\u00e9e afin d\u2019\u00e9viter la d\u00e9faillance d\u2019une source \u00e0 haute imp\u00e9dance comme un panneau solaire. Cette broche est \u00e9galement utilis\u00e9e pour le r\u00e9glage de l\u2019arr\u00eat en cas de sous-tension. La fr\u00e9quence de fonctionnement fixe peut \u00eatre s\u00e9lectionn\u00e9e entre 100kHz et 750kHz et peut \u00eatre synchronis\u00e9e \u00e0 une horloge externe. Les caract\u00e9ristiques suppl\u00e9mentaires comprennent deux entr\u00e9es d\u2019alimentation sur la puce, une broche de s\u00e9lection de l\u2019architecture et un d\u00e9marrage progressif r\u00e9glable.&nbsp;<\/p>\n<p><a href=\"http:\/\/www.linear.com\/product\/LT8711\">www.linear.com\/product\/LT8711<\/a>.&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Analog Devices, Inc., qui a acquis r\u00e9cemment Linear Technology Corporation, annonce le LT8711, un contr\u00f4leur PWM, \u00e0 mode courant et multiples topologies, qui peut \u00eatre configur\u00e9 facilement en convertisseur DC\/DC, synchrone, abaisseur, \u00e9l\u00e9vateur, SEPIC et ZETA, ou en convertisseur asynchrone abaisseur-\u00e9l\u00e9vateur.<\/p>\n","protected":false},"author":9,"featured_media":143623,"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-143622","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Contr\u00f4leur DC\/DC, 42V, avec un courant de sortie jusqu\u2019\u00e0 10A ...<\/title>\n<meta name=\"description\" content=\"Analog Devices, Inc., qui a acquis r\u00e9cemment Linear Technology Corporation, annonce le LT8711, un contr\u00f4leur PWM, \u00e0 mode courant et multiples topologies,...\" \/>\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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