{"id":223527,"date":"2012-02-05T23:00:00","date_gmt":"2012-02-05T23:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/controleur-de-led-pour-applications-declairage-exigeantes\/"},"modified":"2012-02-05T23:00:00","modified_gmt":"2012-02-05T23:00:00","slug":"controleur-de-led-pour-applications-declairage-exigeantes","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/controleur-de-led-pour-applications-declairage-exigeantes\/","title":{"rendered":"Contr\u00f4leur de LED pour applications d\u2019\u00e9clairage exigeantes"},"content":{"rendered":"<p class=\"MsoNormal\">Apte &agrave; contr&ocirc;ler un transistor FET externe dans des topologies de r&eacute;gulateur buck (abaisseur), boost (&eacute;l&eacute;vateur) et buck-boost, ce contr&ocirc;leur se pr&eacute;sente comme une solution &ldquo;tout-en-un&rdquo; pouvant piloter jusqu&rsquo;&agrave; 20 LED &agrave; forte luminosit&eacute; en mode boost avec une tr&egrave;s grande pr&eacute;cision.<br \/>\nGr&acirc;ce &agrave; des boucles de r&eacute;gulation brevet&eacute;es et &agrave; un capteur de courant &ldquo;high-side&rdquo; &agrave; r&eacute;sistance unique, il garantit la stabilit&eacute; du courant de sortie avec une tol&eacute;rance typique de 1% et contribue &agrave; am&eacute;liorer la qualit&eacute; du contr&ocirc;le de la luminosit&eacute; et de l&rsquo;&eacute;galisation de luminance dans les installations. De plus, il offre aux utilisateurs une variation de luminosit&eacute; avec une large plage dynamique via deux options distinctes, la variation en mode DC 20:1 ou la variation en mode PWM 1000:1. Il en r&eacute;sulte un contr&ocirc;le plus pr&eacute;cis de la lumi&egrave;re, en particulier &agrave; faible luminosit&eacute;.<br \/>\nAfin d&rsquo;am&eacute;liorer encore un peu plus la fiabilit&eacute; des syst&egrave;mes d&rsquo;&eacute;clairage &agrave; LED, ce circuit dispose d&rsquo;une fonction de surveillance thermique des LED via une broche d&eacute;di&eacute;e &agrave; une thermistance externe. Coupl&eacute;e aux sorties de diagnostic et de d&eacute;tection de fautes qui remontent l&rsquo;&eacute;tat de charge des LED et des pilotes, cette fonction contribue &agrave; allonger la dur&eacute;e de vie des LED. Affichant une fr&eacute;quence de d&eacute;coupage jusqu&rsquo;&agrave; 1 MHz et encapsul&eacute; en bo&icirc;tier TSSOP-16EP, ce composant permet &eacute;galement de r&eacute;duire la taille du circuit de commande en diminuant la valeur de l&rsquo;inductance externe. <\/p>\n<p class=\"MsoNormal\"><a title=\"www.diodes.com\" target=\"_blank\" href=\"http:\/\/www.diodes.com\" rel=\"noopener\">www.diodes.com<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Caract\u00e9ris\u00e9 par sa capacit\u00e9 \u00e0 accepter des tensions d\u2019entr\u00e9e comprises entre 5 V et 60 V, le contr\u00f4leur de LED ZXLD1371 de Diodes Incorporated a \u00e9t\u00e9 con\u00e7u pour satisfaire une gamme d\u2019applications la plus large possible et, notamment, celles soumises aux variations de tensions d\u2019entr\u00e9e les plus importantes comme l\u2019\u00e9clairage automobile et les syst\u00e8mes aliment\u00e9s sous 12 VAC.<\/p>\n","protected":false},"author":22,"featured_media":0,"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-223527","post","type-post","status-publish","format-standard","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Contr\u00f4leur de LED pour applications d\u2019\u00e9clairage exigeantes ...<\/title>\n<meta name=\"description\" content=\"Caract\u00e9ris\u00e9 par sa capacit\u00e9 \u00e0 accepter des tensions d\u2019entr\u00e9e comprises entre 5 V et 60 V, le contr\u00f4leur de LED ZXLD1371 de Diodes Incorporated a...\" \/>\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\/223527\/\" \/>\n<meta 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