{"id":230256,"date":"2014-06-15T22:00:00","date_gmt":"2014-06-15T22:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/conceptions-de-reference-de-commande-de-lampes-a-led\/"},"modified":"2014-06-15T22:00:00","modified_gmt":"2014-06-15T22:00:00","slug":"conceptions-de-reference-de-commande-de-lampes-a-led","status":"publish","type":"post","link":"https:\/\/test.ecinews.fr\/fr\/conceptions-de-reference-de-commande-de-lampes-a-led\/","title":{"rendered":"Conceptions de r\u00e9f\u00e9rence de commande de lampes \u00e0 LED"},"content":{"rendered":"<p>Ces conceptions de r&eacute;f&eacute;rence mettent en valeur les avantages combin&eacute;s des puces pilotes de LED LYTSwitch-4 de Power Integrations et des LED EasyWhite MT-G2 de CREE. Ces puces pilotes d&eacute;livrent un haut rendement et un courant de sortie pr&eacute;cis dans les applications de substitution d&rsquo;ampoules et de tubes, et d&rsquo;&eacute;clairage en hauteur. Elles simplifient la conception et r&eacute;duisent le co&ucirc;t tout en assurant aux lampes un &eacute;clairage uniforme et une performance exceptionnelle dans la gradation &agrave; TRIAC. La topologie de ces pilotes combine, en un &eacute;tage, la correction de facteur de puissance et la conversion &agrave; courant constant pour d&eacute;livrer un facteur de puissance sup&eacute;rieur &agrave; 0,95 et des rendements typiques de plus de 90%. Cette approche &agrave; un seul &eacute;tage &eacute;limine les condensateurs de stockage &eacute;lectrolytiques sensibles &agrave; la temp&eacute;rature, ce qui augmente grandement la fiabilit&eacute; et la dur&eacute;e des lampes. La fr&eacute;quence de commutation &eacute;lev&eacute;e de 132 kHz de ces puces permet d&rsquo;utiliser des composants magn&eacute;tiques plus compacts et &eacute;conomiques, et la gigue de fr&eacute;quence r&eacute;duit les besoins en filtrage EMI. Gr&acirc;ce &agrave; tout cela, les commandes de LED s&rsquo;int&egrave;grent ais&eacute;ment dans des ampoules de dimensions restreintes.\n<\/p>\n<hr \/>\n<p>Bas&eacute;es sur ces puces, les conceptions se conforment ais&eacute;ment &agrave; la norme de distorsion harmonique totale (THD) EN61000-3-2C et peuvent atteindre une THD de moins de 10%. La r&eacute;gulation est meilleure que +\/-5% sur toute la plage de charge et de production, &eacute;vitant un trop grand surdimensionnement pour l&rsquo;atteinte des objectif de luminance minimum, ce qui r&eacute;duit le co&ucirc;t syst&egrave;me.<br \/>\nLes pilotes<em> <\/em>d&eacute;livrent une excellente performance en gradation jusqu&rsquo;aux angles &agrave; faible conduction avec des TRIAC &agrave; coupure de d&eacute;but ou de fin de phase. Le d&eacute;marrage est tr&egrave;s rapide, typiquement de moins de 500 ms m&ecirc;me avec une gradation &agrave; 10%, et l&rsquo;hyst&eacute;r&eacute;sis (effet pop-on) est virtuellement &eacute;limin&eacute;e.<br \/>\n&quot;Nous avons &eacute;troitement collabor&eacute; avec CREE pour d&eacute;livrer des syst&egrave;mes d&rsquo;&eacute;clairage &agrave; LED grandeur r&eacute;elle qui exploitent tout leur potentiel, en r&eacute;duisant la consommation et en allongeant la dur&eacute;e de vie,&quot; commente Andrew Smith, senior directeur de marketing produit chez Power Integrations. &quot;Ces conceptions permettent de r&eacute;aliser simplement et rapidement des lampes &agrave; LED &eacute;conomiques et durables.&quot; <\/p>\n<\/p>\n<p><a title=\"www.powerint.com\/ledrivers\/cree\" target=\"_blank\" href=\"http:\/\/www.powerint.com\/ledrivers\/cree\" rel=\"noopener\">www.powerint.com\/ledrivers\/cree<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>D\u00e9velopp\u00e9es en commun par Power Integrations et CREE, les quatre conceptions de r\u00e9f\u00e9rence d\u00e9crivent des commandes de lampes \u00e0 LED \u00e0 gradation de type PAR 30 et PAR 38. Les documents DER-364 et DER-365 d\u00e9crivent respectivement des commandes d\u2019ampoules PAR 30 de basse et haute tension, tandis que les DER-350 et DER-396 traitent les ampoules PAR 38 basses et hautes tensions.<\/p>\n","protected":false},"author":22,"featured_media":230257,"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-230256","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 commande de lampes \u00e0 LED ...<\/title>\n<meta name=\"description\" content=\"D\u00e9velopp\u00e9es en commun par Power Integrations et CREE, les quatre conceptions de r\u00e9f\u00e9rence d\u00e9crivent des commandes de lampes \u00e0 LED \u00e0 gradation de type...\" \/>\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\/230256\/\" \/>\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 commande de lampes \u00e0 LED\" \/>\n<meta property=\"og:description\" content=\"D\u00e9velopp\u00e9es en commun par Power Integrations et CREE, les quatre conceptions de r\u00e9f\u00e9rence d\u00e9crivent des commandes de lampes \u00e0 LED \u00e0 gradation de type PAR 30 et PAR 38. 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