{"id":166507,"date":"2017-07-18T23:06:57","date_gmt":"2017-07-18T23:06:57","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/pilote-de-led-monolithique-abaisseur-synchrone-36v-2a\/"},"modified":"2017-07-18T23:06:57","modified_gmt":"2017-07-18T23:06:57","slug":"pilote-de-led-monolithique-abaisseur-synchrone-36v-2a","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/pilote-de-led-monolithique-abaisseur-synchrone-36v-2a\/","title":{"rendered":"Pilote de LED, monolithique, abaisseur, synchrone, 36V, 2A"},"content":{"rendered":"<p>Son contr\u00f4le en mode cr\u00eate de courant, \u00e0 fr\u00e9quence fixe, permet une r\u00e9gulation pr\u00e9cise du courant \u00e0 \u00b11,5%, pour des guirlandes de LED jusqu\u2019\u00e0 2A. Son g\u00e9n\u00e9rateur PWM, int\u00e9gr\u00e9, r\u00e9alise des rapports de luminosit\u00e9 de 1 \u00e0 128. Si des rapports de luminosit\u00e9 jusqu\u2019\u00e0 1 \u00e0 5000 sont requis, le LT3932 et un g\u00e9n\u00e9rateur PWM externe peuvent convenir \u00e0 ces applications. La gamme de tensions d\u2019entr\u00e9e du LT3932, de 3,6V \u00e0 36V, convient \u00e0 une grande vari\u00e9t\u00e9 d\u2019applications incluant l\u2019automobile, l\u2019\u00e9clairage industriel et architectural. L\u2019association de l\u2019architecture Silent switcher&nbsp;<sup> <\/sup>et de la modulation de fr\u00e9quence \u00e0 \u00e9talement de spectre r\u00e9duit les probl\u00e8mes li\u00e9s aux EMI (interf\u00e9rence \u00e9lectromagn\u00e9tique). Le LT3932 peut piloter jusqu\u2019\u00e0 huit LED blanches de 2A, \u00e0 partir d\u2019une tension nominale d\u2019entr\u00e9e de 32V, g\u00e9n\u00e9rant jusqu\u2019\u00e0 plus de 50W.<\/p>\n<p>Le LT3932 peut r\u00e9aliser des rendements de 93% en commutant \u00e0 2MHz, \u00e9liminant le besoin d\u2019un radiateur externe et offrant une solution d\u2019empreinte petite et compacte. Une protection contre les LED ouvertes \/ en court-circuit et une signalisation d\u2019erreur am\u00e9liorent la fiabilit\u00e9. La fr\u00e9quence de commutation du LT3932 est programmable de 200kHz \u00e0 2MHz ou le composant peut \u00eatre synchronis\u00e9 \u00e0 un signal d\u2019horloge externe. Encapsul\u00e9 dans un bo\u00eetier QFN de 4mm x 5mm, le LT3932 pr\u00e9sente une solution de pilote de LED de forte puissance, tr\u00e8s compacte. Les autres caract\u00e9ristiques comprennent la mesure pr\u00e9cise du courant de LED avec une sortie de contr\u00f4le, un fonctionnement \u00e0 rapport cyclique de 99,9% et l\u2019arr\u00eat programmable en cas de sous-tension.<\/p>\n<p><a href=\"http:\/\/www.linear.com\/product\/3932\">www.linear.com\/product\/3932<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Analog Devices, Inc, qui a acquis r\u00e9cemment Linear Technology Corporation, annonce le LT3932, un convertisseur DC\/DC, monolithique, abaisseur, synchrone, avec des commutateurs de puissance 36V, 2A et un g\u00e9n\u00e9rateur PWM (modulation de largeur d\u2019impulsion) interne. <\/p>\n","protected":false},"author":9,"featured_media":166508,"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-166507","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Pilote de LED, monolithique, abaisseur, synchrone, 36V, 2A ...<\/title>\n<meta name=\"description\" content=\"Analog Devices, Inc, qui a acquis r\u00e9cemment Linear Technology Corporation, annonce le LT3932, un convertisseur DC\/DC, monolithique, abaisseur, synchrone,...\" \/>\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\/166507\/\" \/>\n<meta property=\"og:locale\" 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