{"id":233988,"date":"2015-08-20T22:00:00","date_gmt":"2015-08-20T22:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/double-controleur-dc-dc-60-v-a-interface-numerique\/"},"modified":"2015-08-20T22:00:00","modified_gmt":"2015-08-20T22:00:00","slug":"double-controleur-dc-dc-60-v-a-interface-numerique","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/double-controleur-dc-dc-60-v-a-interface-numerique\/","title":{"rendered":"Double contr\u00f4leur DC\/DC 60 V \u00e0 interface num\u00e9rique"},"content":{"rendered":"<p>Ce contr&ocirc;leur est appropri&eacute; aux environnements s&eacute;v&egrave;res qui requi&egrave;rent les tensions d&rsquo;entr&eacute;e &eacute;lev&eacute;es couramment rencontr&eacute;es dans les applications de l&rsquo;automation, de l&rsquo;industrie, du m&eacute;dical, des t&eacute;l&eacute;communications et de l&rsquo;avionique. Il peut &ecirc;tre configur&eacute; &agrave; sortie double ou simple et jusqu&rsquo;&agrave; six phases peuvent &ecirc;tre mises en parall&egrave;le pour un courant de charge aussi &eacute;lev&eacute; que 120 A. L&rsquo;architecture de l&rsquo;horloge en 2, 3, 4 ou 6 phases contribue &agrave; la r&eacute;duction de l&rsquo;ondulation d&rsquo;entr&eacute;e et de sortie, de ce fait, &agrave; la diminution de la capacit&eacute; du condensateur en entr&eacute;e et en sortie.<br \/>\nCe composant est compatible avec le logiciel de syst&egrave;me de d&eacute;veloppement LTpowerPlay et de l&rsquo;interface graphique pour l&rsquo;utilisateur (GUI). Son bus I2C donne la possibilit&eacute; aux concepteurs syst&egrave;me et aux op&eacute;rateurs d&eacute;port&eacute;s de commander et de superviser la consommation de l&rsquo;alimentation. Cette possibilit&eacute; de modifier les param&egrave;tres de l&rsquo;alimentation par commande num&eacute;rique r&eacute;duit le temps de mise sur le march&eacute; et les arr&ecirc;ts en supprimant tout ce qui pourrait n&eacute;cessiter des modifications mat&eacute;rielles de circuit ou de nomenclature. Ainsi, ce circuit simplifie la caract&eacute;risation, l&rsquo;optimisation et l&rsquo;analyse des donn&eacute;es pendant la phase de mise au point du prototype, le d&eacute;ploiement et le fonctionnement sur site.<br \/>\nEn plus de fournir de la puissance au point de charge, ce contr&ocirc;leur offre la possibilit&eacute; de configuration et de gestion &agrave; distance de l&rsquo;alimentation et de ses param&egrave;tres via le PMBus, un protocole d&rsquo;interface s&eacute;rie num&eacute;rique au standard libre du bus I2C. Son interface s&eacute;rie 2 fils autorise la programmation des marges de tension en sortie, des r&eacute;glages et des vitesses de mont&eacute;e et de descente avec des retards s&eacute;quenc&eacute;s. Les tensions, ainsi que les intensit&eacute;s d&rsquo;entr&eacute;e et de sortie, et la temp&eacute;rature sont accessibles &agrave; la lecture.\n<\/p>\n<hr \/>\n<p>Avec une erreur maximum de &plusmn;0,5% sur la tension continue de sortie, une pr&eacute;cision de lecture de l&rsquo;intensit&eacute; de &plusmn;1,5%, un CAN delta-sigma de 16 bits et une EEPROM, int&eacute;gr&eacute;s, ce dispositif combine des performances parmi les meilleures de sa classe pour un r&eacute;gulateur analogique &agrave; d&eacute;coupage, avec une acquisition pr&eacute;cise des donn&eacute;es de signaux mixtes. Les canaux peuvent se partager le courant avec pr&eacute;cision, aussi bien en &eacute;tat de r&eacute;gulation qu&rsquo;en &eacute;tat transitoire. Au d&eacute;marrage, la d&eacute;termination des param&egrave;tres des tensions de sortie, de la fr&eacute;quence de commutation et des d&eacute;phasages entre canaux peut &ecirc;tre r&eacute;alis&eacute;e par connexion de r&eacute;sistances sur des broches ou par chargement dans une EEPROM int&eacute;gr&eacute;e.<br \/>\nDans un petit bo&icirc;tier QFN-52 de seulement 7 x 8 mm, ce composant comprend deux boucles de contr&ocirc;le analogiques rapides, des circuits de pr&eacute;cision pour signaux mix&eacute;s et une EEPROM. Il fonctionne sur une gamme de temp&eacute;ratures de jonction de -40 &deg;C &agrave; +125 &deg;C. Afin d&rsquo;&eacute;valuer son fonctionnement, le GUI LTpowerPlay est en t&eacute;l&eacute;chargement libre. Les kits de d&eacute;monstration et du convertisseur USB-vers-PMBus sont &eacute;galement propos&eacute;s. <\/p>\n<\/p>\n<p><a title=\"www.linear.com\/product\/LTC3886\" target=\"_blank\" href=\"http:\/\/www.linear.com\/product\/LTC3886\" rel=\"noopener\">www.linear.com\/product\/LTC3886<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Supportant jusqu\u2019\u00e0 60 V en entr\u00e9e et dot\u00e9 d\u2019une double sortie, le contr\u00f4leur DC\/DC abaisseur synchrone LTC3886 de Linear Technology int\u00e8gre une compensation de boucle programmable et une interface PMBus bas\u00e9e sur le bus I2C. Il utilise une architecture en mode courant et \u00e0 fr\u00e9quence fixe avec programmation de la tension de sortie jusqu\u2019\u00e0 13,8 V.<\/p>\n","protected":false},"author":22,"featured_media":233989,"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-233988","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Double contr\u00f4leur DC\/DC 60 V \u00e0 interface num\u00e9rique ...<\/title>\n<meta name=\"description\" content=\"Supportant jusqu\u2019\u00e0 60 V en entr\u00e9e et dot\u00e9 d\u2019une double sortie, le contr\u00f4leur DC\/DC abaisseur synchrone LTC3886 de Linear Technology int\u00e8gre une...\" \/>\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\/233988\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Double contr\u00f4leur DC\/DC 60 V \u00e0 interface num\u00e9rique\" \/>\n<meta property=\"og:description\" content=\"Supportant jusqu\u2019\u00e0 60 V en entr\u00e9e et dot\u00e9 d\u2019une double sortie, le contr\u00f4leur DC\/DC abaisseur synchrone LTC3886 de Linear Technology int\u00e8gre une compensation de boucle programmable et une interface PMBus bas\u00e9e sur le bus I2C. 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