{"id":225818,"date":"2012-12-06T23:00:00","date_gmt":"2012-12-06T23:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/conceptions-de-reference-de-commandes-de-led-pour-tubes-t8\/"},"modified":"2012-12-06T23:00:00","modified_gmt":"2012-12-06T23:00:00","slug":"conceptions-de-reference-de-commandes-de-led-pour-tubes-t8","status":"publish","type":"post","link":"https:\/\/test.ecinews.fr\/fr\/conceptions-de-reference-de-commandes-de-led-pour-tubes-t8\/","title":{"rendered":"Conceptions de r\u00e9f\u00e9rence de commandes de LED pour tubes T8"},"content":{"rendered":"<p>Utilisant la puce pilote de LED propri&eacute;taire LNK460KG de la famille LinkSwitch-PL, les circuits d&eacute;crits dans les documents DER-337 pour la haute tension, de 195 &agrave; 265 VAC, et DER-345 pour la basse tension, de 85 &agrave; 135 VAC, pr&eacute;sentent des topologies non isol&eacute;es &agrave; un &eacute;tage qui leur conf&egrave;rent un bas profil de 8 mm, ce qui permet de les monter derri&egrave;re les LED dans un tube T8. Les configurations buck-boost pour la version haute tension et buck pour la basse tension d&eacute;livrent un facteur de puissance sup&eacute;rieur &agrave; 0,9 et une faible THD, respectant les limites de la norme EN61000-3-2 C. Concernant les interf&eacute;rences &eacute;lectromagn&eacute;tiques, les conceptions respectent facilement les sp&eacute;cifications EN55015 (EMI) classe B. Le circuit int&eacute;gr&eacute; de commande &agrave; un &eacute;tage contr&ocirc;le la correction de facteur de puissance en m&ecirc;me temps que la sortie &agrave; courant constant, ce qui permet &agrave; la solution d&rsquo;utiliser moins de 30 composants. Les deux commandes d&eacute;livrent 20 W, soit 240 mA sous 85 V, avec des rendements &eacute;lev&eacute;s de 92 % en haute tension et 89 % en basse tension<br \/>\n&quot;Le march&eacute; des tubes &agrave; LED &eacute;volue vers les commandes non isol&eacute;es, qui augmentent le rendement syst&egrave;me et r&eacute;duisent la temp&eacute;rature de la carte et de ses composants,&quot; explique Andrew Smith, directeur de marketing produit chez Power Integrations. &quot;Ces cartes utilisent approximativement la moiti&eacute; des composants des commandes isol&eacute;es et leur efficacit&eacute; &eacute;nerg&eacute;tique est typiquement sup&eacute;rieure de 3 &agrave; 4 %. Avec leur facteur de puissance &eacute;lev&eacute; et leur faible THD, elles conviennent parfaitement aux applications d&rsquo;&eacute;clairage commercial et industriel partout dans le monde.&quot;\n<\/p>\n<p><strong> <\/strong><\/p>\n<p><a title=\"www.powerint.com\/sites\/default\/files\/PDFFiles\/der337.pdf\" target=\"_blank\" href=\"http:\/\/www.powerint.com\/sites\/default\/files\/PDFFiles\/der337.pdf\" rel=\"noopener\">www.powerint.com\/sites\/default\/files\/PDFFiles\/der337.pdf<\/a> <a title=\"www.powerint.com\/sites\/default\/files\/PDFFiles\/der345.pdf\" target=\"_blank\" href=\"http:\/\/www.powerint.com\/sites\/default\/files\/PDFFiles\/der345.pdf\" rel=\"noopener\">www.powerint.com\/sites\/default\/files\/PDFFiles\/der345.pdf<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pour les solutions de substitution \u00e0 LED des tubes T8, Power Integrations introduit deux conceptions de r\u00e9f\u00e9rence DER-337 et DER-345 d\u00e9crivant des commandes de LED non isol\u00e9es de haut rendement et de facteur de puissance \u00e9lev\u00e9. Ces concepts tirent parti d\u2019un petit nombre de composants, de circuits magn\u00e9tiques simples et de cartes simple face pour obtenir une densit\u00e9 de puissance \u00e0 la pointe de l\u2019industrie, de 0,9 W\/cm3. <\/p>\n","protected":false},"author":22,"featured_media":225819,"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-225818","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Conceptions de r\u00e9f\u00e9rence de commandes de LED pour tubes T8 ...<\/title>\n<meta name=\"description\" content=\"Pour les solutions de substitution \u00e0 LED des tubes T8, Power Integrations introduit deux conceptions de r\u00e9f\u00e9rence DER-337 et DER-345 d\u00e9crivant des...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/test.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/225818\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Conceptions de r\u00e9f\u00e9rence de commandes de LED pour tubes T8\" \/>\n<meta property=\"og:description\" content=\"Pour les solutions de substitution \u00e0 LED des tubes T8, Power Integrations introduit deux conceptions de r\u00e9f\u00e9rence DER-337 et DER-345 d\u00e9crivant des commandes de LED non isol\u00e9es de haut rendement et de facteur de puissance \u00e9lev\u00e9. 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