{"id":208657,"date":"2016-06-08T23:00:00","date_gmt":"2016-06-08T23:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/regulateur-abaisseur-synchrone-42-v-sortie-35-a-175-c\/"},"modified":"2016-06-08T23:00:00","modified_gmt":"2016-06-08T23:00:00","slug":"regulateur-abaisseur-synchrone-42-v-sortie-35-a-175-c","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/regulateur-abaisseur-synchrone-42-v-sortie-35-a-175-c\/","title":{"rendered":"R\u00e9gulateur abaisseur synchrone, 42 V, sortie 3,5 A, 175 \u00b0C"},"content":{"rendered":"

Avec une gamme de tension d\u2019entr\u00e9e allant de 3,7 V \u00e0 42 V, ce r\u00e9gulateur est bien appropri\u00e9 aux applications \u00e0 haute temp\u00e9rature des \u00e9quipements de forage avec des alimentations allant de 5 V \u00e0 40 V. Ses param\u00e8tres \u00e9lectriques test\u00e9s \u00e0 100% \u00e0 175 \u00b0C pr\u00e9sentent une r\u00e9f\u00e9rence de tension VREF<\/sub> de pr\u00e9cision 2% sur toute la gamme de temp\u00e9ratures de -40 \u00b0C \u00e0 +175 \u00b0C. Par ailleurs \u00e0 175\u00b0C, il pr\u00e9sente un rendement sup\u00e9rieur \u00e0 90% (pour des conversions de 12 V en entr\u00e9e en 3,3 V en sortie) sur une large gamme du courant de charge allant de 10 mA \u00e0 1 A, ce qui convient pour les applications aliment\u00e9es sur batterie que l\u2019on trouve g\u00e9n\u00e9ralement dans les dispositifs de forage. Le fonctionnement en Burst Mode autorise un tr\u00e8s faible courant de repos, ce qui convient aux applications qui n\u00e9cessitent une autonomie plus importante de la batterie.<\/p>\n

Sur une seule puce, ce circuit int\u00e8gre des commutateurs de puissance internes, haut et bas, au rendement \u00e9lev\u00e9, avec la diode \u00e9l\u00e9vatrice, l\u2019oscillateur, les circuits de contr\u00f4le et de logique n\u00e9cessaires. Ceci \u00e9limine le besoin en diodes Schottky externes qui peuvent poser des probl\u00e8mes \u00e0 hautes temp\u00e9ratures. L\u2019inutilit\u00e9 d\u2019un arr\u00eat thermique est appropri\u00e9e aux environnements \u00e0 temp\u00e9rature \u00e9lev\u00e9e.<\/p>\n

\n

Le fonctionnement en Burst Mode, \u00e0 faible ondulation, maintient un rendement \u00e9lev\u00e9 pour de faibles intensit\u00e9s de sortie, tout en gardant l\u2019ondulation en sortie en dessous de 10 mV cr\u00eate \u00e0 cr\u00eate.  <\/sub>L\u2019architecture \u00e0 mode courant assure une r\u00e9ponse rapide aux transitoires et une excellente stabilit\u00e9 de boucle. Le r\u00e9glage de la fr\u00e9quence en interne ou la synchronisation sur une horloge externe se fait entre 200 kHz et 2,2 MHz. Les autres caract\u00e9ristiques incluent une compensation interne, un indicateur de tension \u00e9tablie ainsi qu\u2019un d\u00e9marrage progressif et un suivi de la tension en sortie.<\/p>\n

Le bo\u00eetier MSOP de 16 broches, \u00e0 performances thermiques renforc\u00e9es, procure une mise en \u0153uvre d\u2019empreinte tr\u00e8s compacte, de haut rendement thermique. De plus, le rev\u00eatement sp\u00e9cial au Cu\/Ni\/Au sur la semelle du circuit assure une longue dur\u00e9e de vie dans les environnements \u00e0 haute temp\u00e9rature.<\/p>\n

www.linear.com\/product\/LT8610AX<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Fonctionnant \u00e0 une temp\u00e9rature ambiante de 175 \u00b0C, le r\u00e9gulateur \u00e0 d\u00e9coupage, abaisseur LT8610AX de Linear Technology accepte jusqu\u2019\u00e0 42 V en entr\u00e9e et fournit 3.5 A en sortie. Le redressement synchrone permet d\u2019obtenir un rendement aussi \u00e9lev\u00e9 que 95%, tandis que le fonctionnement en Burst Mode maintient le courant de repos inf\u00e9rieur \u00e0 3,5 \u00b5A en mode veille et \u00e0 vide.<\/p>\n","protected":false},"author":9,"featured_media":208658,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[909,890],"domains":[47],"ppma_author":[1141],"class_list":["post-208657","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","tag-batteries-power-supplies-fr","tag-powermanagement-fr","domains-electronique-eci"],"acf":[],"yoast_head":"R\u00e9gulateur abaisseur synchrone, 42 V, sortie 3,5 A, 175 \u00b0C ...<\/title>\n<meta name=\"description\" content=\"Fonctionnant \u00e0 une temp\u00e9rature ambiante de 175 \u00b0C, le r\u00e9gulateur \u00e0 d\u00e9coupage, abaisseur LT8610AX de Linear Technology accepte jusqu\u2019\u00e0 42 V en...\" \/>\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\/208657\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"R\u00e9gulateur abaisseur synchrone, 42 V, sortie 3,5 A, 175 \u00b0C\" \/>\n<meta property=\"og:description\" content=\"Fonctionnant \u00e0 une temp\u00e9rature ambiante de 175 \u00b0C, le r\u00e9gulateur \u00e0 d\u00e9coupage, abaisseur LT8610AX de Linear Technology accepte jusqu\u2019\u00e0 42 V en entr\u00e9e et fournit 3.5 A en sortie. Le redressement synchrone permet d\u2019obtenir un rendement aussi \u00e9lev\u00e9 que 95%, tandis que le fonctionnement en Burst Mode maintient le courant de repos inf\u00e9rieur \u00e0 3,5 \u00b5A en mode veille et \u00e0 vide.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/208657\/\" \/>\n<meta property=\"og:site_name\" content=\"EENewsEurope\" \/>\n<meta property=\"article:published_time\" content=\"2016-06-08T23:00:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ecinews.fr\/wp-content\/uploads\/import\/default\/files\/sites\/default\/files\/images\/eci7903_linear_lt8610ax.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2015\" \/>\n\t<meta property=\"og:image:height\" content=\"1439\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Alain Dieul\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" 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