{"id":232668,"date":"2015-03-26T23:00:00","date_gmt":"2015-03-26T23:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/convertisseur-abaisseur-elevateur-synchrone-a-deux-entrees-powerpath\/"},"modified":"2015-03-26T23:00:00","modified_gmt":"2015-03-26T23:00:00","slug":"convertisseur-abaisseur-elevateur-synchrone-a-deux-entrees-powerpath","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/convertisseur-abaisseur-elevateur-synchrone-a-deux-entrees-powerpath\/","title":{"rendered":"Convertisseur abaisseur-\u00e9l\u00e9vateur synchrone, \u00e0 deux entr\u00e9es PowerPath"},"content":{"rendered":"<p>Ce convertisseur peut fournir un courant continu de sortie jusqu&rsquo;&agrave; 2 A &agrave; partir d&rsquo;une large gamme d&rsquo;alimentations, allant des batteries &agrave; un ou plusieurs &eacute;l&eacute;ments jusqu&rsquo;aux batteries de supercondensateurs et prises murales. Ses gammes de tensions de 2,2 V &agrave; 18 V sur chacune des deux entr&eacute;es fournissent une tension de sortie r&eacute;gul&eacute;e de 2 V &agrave; 18 V, avec des tensions d&rsquo;entr&eacute;e sup&eacute;rieures, inf&eacute;rieures ou &eacute;gales &agrave; celle de sortie.<br \/>\nIl utilise une architecture en mode abaisseur-&eacute;l&eacute;vateur et mode courant, &agrave; faible niveau de bruit, et &agrave; fr&eacute;quence de commutation fixe de 1,2 MHz. Sa conception unique procure une transition continue, sans gigue, entre les modes de fonctionnement en abaisseur et en &eacute;l&eacute;vateur, ce qui le rend appropri&eacute; aux applications RF et autres, sensibles au bruit. Le contr&ocirc;leur PowerPath int&eacute;gr&eacute;, &agrave; faibles pertes, est programmable par l&rsquo;utilisateur pour assurer les priorit&eacute;s et une transition continue entre les entr&eacute;es, tout en maintenant la r&eacute;gulation de la tension de sortie. La combinaison de petits composants externes et d&rsquo;un bo&icirc;tier QFN de 4 x 5mm ou TSSOP-28E, conduit &agrave; des applications de faible empreinte.<br \/>\nUtilisant quatre MOSFET canal N internes, &agrave; faible r&eacute;sistance &agrave; l&rsquo;&eacute;tat passant RDS(on), ce circuit affiche des rendements pouvant atteindre 94%. S&eacute;lectionnable par l&rsquo;utilisateur, le fonctionnement en Burst Mode r&eacute;duit la consommation au repos &agrave; seulement 50 &micro;A, ce qui am&eacute;liore le rendement aux faibles charges et accro&icirc;t l&rsquo;autonomie sur batterie. Pour les applications sensibles au bruit, ce mode de fonctionnement peut &ecirc;tre d&eacute;sactiv&eacute;.\n<\/p>\n<hr \/>\n<p>Les autres caract&eacute;ristiques comprennent un d&eacute;marrage progressif, des protections contre les surtensions et les courts-circuits, un arr&ecirc;t thermique et la d&eacute;connexion de la sortie.<br \/>\nPr&eacute;sent&eacute; en bo&icirc;tiers &agrave; performances thermiques renforc&eacute;es QFN 24 broches, de 4 x 5 mm, sous le suffixe UFD, et TSSOP 28 broches, suffixe FE, ce composant est propos&eacute; en classe industrielle E &agrave; temp&eacute;rature de jonction de -40 &deg;C &agrave; +125 &deg;C, en haute temp&eacute;rature classe H de -40 &deg;C &agrave; +150 &deg;C et en classe MP de -55 &deg;C &agrave; +150 &deg;C pour le militaire.<\/p>\n<\/p>\n<p><a href=\"http:\/\/www.linear.com\/product\/ltc3118\" target=\"_blank\" title=\"www.linear.com\/product\/LTC3118\" rel=\"noopener\">www.linear.com\/product\/LTC3118<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dot\u00e9 de deux entr\u00e9es \u00e0 large gamme de tensions, le convertisseur DC\/DC, abaisseur-\u00e9l\u00e9vateur synchrone LTC3118 de Linear Technology int\u00e8gre un contr\u00f4le PowerPath, intelligent et \u00e0 faibles pertes. Son architecture \u00e0 commutateurs de puissance procure un fonctionnement \u00e0 haut rendement, \u00e0 partir de n\u2019importe quelle source d\u2019entr\u00e9e, pour programmer une tension de sortie sup\u00e9rieure, inf\u00e9rieure ou \u00e9gale \u00e0 celles d\u2019entr\u00e9e.<\/p>\n","protected":false},"author":22,"featured_media":232669,"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-232668","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Convertisseur abaisseur-\u00e9l\u00e9vateur synchrone, \u00e0 deux entr\u00e9es...<\/title>\n<meta name=\"description\" content=\"Dot\u00e9 de deux entr\u00e9es \u00e0 large gamme de tensions, le convertisseur DC\/DC, abaisseur-\u00e9l\u00e9vateur synchrone LTC3118 de Linear Technology int\u00e8gre un contr\u00f4le...\" \/>\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\/232668\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Convertisseur abaisseur-\u00e9l\u00e9vateur synchrone, \u00e0 deux entr\u00e9es PowerPath\" \/>\n<meta property=\"og:description\" content=\"Dot\u00e9 de deux entr\u00e9es \u00e0 large gamme de tensions, le convertisseur DC\/DC, abaisseur-\u00e9l\u00e9vateur synchrone LTC3118 de Linear Technology int\u00e8gre un contr\u00f4le PowerPath, intelligent et \u00e0 faibles pertes. 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