{"id":231048,"date":"2014-09-28T22:00:00","date_gmt":"2014-09-28T22:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/convertisseur-dc-dc-push-pull-1-a-avec-programmation-du-rapport-cyclique\/"},"modified":"2014-09-28T22:00:00","modified_gmt":"2014-09-28T22:00:00","slug":"convertisseur-dc-dc-push-pull-1-a-avec-programmation-du-rapport-cyclique","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/convertisseur-dc-dc-push-pull-1-a-avec-programmation-du-rapport-cyclique\/","title":{"rendered":"Convertisseur DC\/DC push-pull 1 A avec programmation du rapport cyclique"},"content":{"rendered":"

La programmation du rapport cyclique et des rapports de transformation fixe la tension de sortie. Plusieurs transformateurs courants, indiqués dans la fiche de caractéristiques, simplifient la conception. La fréquence de commutation est réglable de 50 kHz à 1 MHz et peut être synchronisée à une horloge externe. La gamme de tensions d’entrée est fixée avec les niveaux précis de blocage en cas de sous-tension et de surtension. Le courant d’alimentation est inférieur à 1 µA à l’arrêt. Une constante de temps RC, définie par l’utilisateur, permet le réglage d’un démarrage progressif en limitant les courants d’appel et un circuit de prévention contre un chevauchement d’intensité (cross-conduction) accroît la fiabilité. Son architecture lui assure un faible niveau de bruit.
\nProposé en boîtiers à performances thermiques renforcées MSOP-10 et DFN-10 de 3 x 3 mm, ce convertisseur se décline en versions classes E et I avec une température de jonction de -40 °C à +125 °C, classe H garantie de -40 °C à +150 °C et classe MP garantie de -55 °C à +150 °C. Tout ceci le rend approprié aux applications de l’automobile, industrielles, médicales et militaires. <\/p>\n<\/p>\n

www.linear.com\/product\/LT3999<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Dot\u00e9 d\u2019une sortie par transformateur push-pull isol\u00e9 avec deux commutateurs 1 A, le convertisseur DC\/DC monolithique LT3999 de Linear Technology fonctionne sur une tension d\u2019entr\u00e9e de 2,7 V \u00e0 36 V. Il peut g\u00e9n\u00e9rer une large gamme de tensions de sortie et atteindre des niveaux de puissance jusqu\u2019\u00e0 15 W.<\/p>\n","protected":false},"author":22,"featured_media":231049,"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-231048","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"Convertisseur DC\/DC push-pull 1 A avec programmation du rapport...<\/title>\n<meta name=\"description\" content=\"Dot\u00e9 d\u2019une sortie par transformateur push-pull isol\u00e9 avec deux commutateurs 1 A, le convertisseur DC\/DC monolithique LT3999 de Linear Technology...\" \/>\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\/231048\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Convertisseur DC\/DC push-pull 1 A avec programmation du rapport cyclique\" \/>\n<meta property=\"og:description\" content=\"Dot\u00e9 d\u2019une sortie par transformateur push-pull isol\u00e9 avec deux commutateurs 1 A, le convertisseur DC\/DC monolithique LT3999 de Linear Technology fonctionne sur une tension d\u2019entr\u00e9e de 2,7 V \u00e0 36 V. Il peut g\u00e9n\u00e9rer une large gamme de tensions de sortie et atteindre des niveaux de puissance jusqu\u2019\u00e0 15 W.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/231048\/\" \/>\n<meta property=\"og:site_name\" content=\"EENewsEurope\" \/>\n<meta property=\"article:published_time\" content=\"2014-09-28T22:00:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ecinews.fr\/wp-content\/uploads\/import\/default\/files\/import\/eci6979_linear_lt3999.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2033\" \/>\n\t<meta property=\"og:image:height\" content=\"1452\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"eeNews Europe\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"eeNews Europe\" \/>\n\t<meta name=\"twitter:label2\" 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