{"id":137970,"date":"2017-11-22T23:31:44","date_gmt":"2017-11-22T23:31:44","guid":{"rendered":"https:\/\/\/controleur-redresseur-actif-avec-protection-contre-les-tensions-inverses\/"},"modified":"2017-11-22T23:31:44","modified_gmt":"2017-11-22T23:31:44","slug":"controleur-redresseur-actif-avec-protection-contre-les-tensions-inverses","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/controleur-redresseur-actif-avec-protection-contre-les-tensions-inverses\/","title":{"rendered":"Contr\u00f4leur redresseur actif avec protection contre les tensions inverses"},"content":{"rendered":"<p>Le LT8672 contr\u00f4le un MOSFET canal N, externe, pr\u00e9sentant une chute de tension de 20mV, r\u00e9duisant la dissipation de puissance de 90% par rapport \u00e0 une diode Schottky, ce qui supprime la n\u00e9cessit\u00e9 d\u2019avoir un radiateur on\u00e9reux. La r\u00e9ponse tr\u00e8s rapide aux signaux transitoires lui permet de r\u00e9pondre aux demandes des applications exigeantes de l\u2019automobile, qui requi\u00e8rent un redressement de l\u2019ondulation d\u2019entr\u00e9e jusqu\u2019\u00e0 100kHz. De plus, ses courants de repos en fonctionnement de 20\u00b5A et de 3,5\u00b5A \u00e0 l\u2019arr\u00eat sont appropri\u00e9s aux syst\u00e8mes toujours connect\u00e9s. La combinaison du bo\u00eetier MSOP-10 et d\u2019un MOSFET externe conduit \u00e0 une empreinte de mise en \u0153uvre compacte.<\/p>\n<p>La solution LT8672 pr\u00e9sente la combinaison d\u2019une tension d\u2019entr\u00e9e minimale de 3V et d\u2019une chute de tension de 20mV, ce qui lui permet de fournir facilement la tension d\u2019entr\u00e9e minimale requise lors d\u2019un d\u00e9marrage \u00e0 froid et d\u2019un arr\u00eat-d\u00e9marrage, procurant des circuits plus simples et plus performants. Si l\u2019alimentation d\u2019entr\u00e9e est d\u00e9faillante ou court-circuit\u00e9e, un arr\u00eat tr\u00e8s rapide r\u00e9duit les courants d\u2019appel inverses en entr\u00e9e. De m\u00eame, une broche \u00ab&nbsp;tension r\u00e9gul\u00e9e&nbsp;\u00bb indique quand le MOSFET externe est pr\u00eat \u00e0 recevoir le courant de charge.&nbsp;<\/p>\n<p><a href=\"http:\/\/www.linear.com\/product\/LT8672\">www.linear.com\/product\/LT8672<\/a>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Analog Devices annonce le Power by Linear LT8672, un contr\u00f4leur redresseur actif avec protection contre les tensions inverses de  -40V en entr\u00e9e. La possibilit\u00e9 d\u2019une tension d\u2019entr\u00e9e, de 3V \u00e0 42V, est appropri\u00e9e aux applications de l\u2019automobile qui doivent assurer la r\u00e9gulation en cas de d\u00e9marrage \u00e0 froid et arr\u00eat-d\u00e9marrage, avec des tensions d\u2019entr\u00e9e aussi basses que 3,0V et de pics de tension de 40V lors d\u2019une rupture de charge.<\/p>\n","protected":false},"author":9,"featured_media":137971,"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-137970","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Contr\u00f4leur redresseur actif avec protection contre les tension...<\/title>\n<meta name=\"description\" content=\"Analog Devices annonce le Power by Linear LT8672, un contr\u00f4leur redresseur actif avec protection contre les tensions inverses de  -40V en entr\u00e9e. 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La possibilit\u00e9 d\u2019une tension d\u2019entr\u00e9e, de 3V \u00e0 42V, est appropri\u00e9e aux applications de l\u2019automobile qui doivent assurer la r\u00e9gulation en cas de d\u00e9marrage \u00e0 froid et arr\u00eat-d\u00e9marrage, avec des tensions d\u2019entr\u00e9e aussi basses que 3,0V et de pics de tension de 40V lors d\u2019une rupture de charge.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/137970\/\" \/>\n<meta property=\"og:site_name\" content=\"EENewsEurope\" \/>\n<meta property=\"article:published_time\" content=\"2017-11-22T23:31:44+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cdn.eenewseurope.com\/wp-content\/uploads\/import\/default\/files\/sites\/default\/files\/images\/eci6010_lt8672.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1955\" \/>\n\t<meta property=\"og:image:height\" content=\"1396\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" 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