{"id":111182,"date":"2018-08-30T21:00:44","date_gmt":"2018-08-30T21:00:44","guid":{"rendered":"https:\/\/\/regulateur-%c2%b5module-50a-extensible-jusqua-250a\/"},"modified":"2018-08-30T21:00:44","modified_gmt":"2018-08-30T21:00:44","slug":"regulateur-%c2%b5module-50a-extensible-jusqua-250a","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/regulateur-%c2%b5module-50a-extensible-jusqua-250a\/","title":{"rendered":"R\u00e9gulateur \u00b5Module 50A, extensible jusqu\u2019\u00e0 250A"},"content":{"rendered":"

Une EEPROM sur la carte et l\u2019interface I2C PMBus permettent \u00e0 l\u2019utilisateur de mesurer, modifier et enregistrer les param\u00e8tres de puissance essentiels comme la tension, le courant de charge, la temp\u00e9rature et le s\u00e9quencement. Les courants de cinq LTM4678, de 50A chacun, peuvent s\u2019ajouter pour g\u00e9n\u00e9rer un courant pouvant atteindre 250A \u00e0 des charges comme des processeurs, FPGA et ASIC. Les applications comprennent les cartes PCIe, les infrastructures de communications, les syst\u00e8mes informatiques d\u00e9mat\u00e9rialis\u00e9s (cloud), optiques ainsi que m\u00e9dicaux, industriels, et les \u00e9quipements de test et de mesure. <\/p>\n

Le LTM4678 int\u00e8gre un contr\u00f4leur DC\/DC, une EEPROM, des transistors FET de puissance, des inductances et composants auxiliaires dans un bo\u00eetier BGA 16mm x 16mm x 5,86mm. La pr\u00e9cision de la tension de sortie de \u00b10.5% est garantie en fonction de la ligne, la charge et la temp\u00e9rature (\u201340\u00b0C \u00e0 125\u00b0C). <\/p>\n

Le LTM4678 fonctionne sur la plage de tension d\u2019entr\u00e9e de 4,5V \u00e0 16V, et les deux plages des tensions de sortie sont contr\u00f4l\u00e9es num\u00e9riquement de 0,5V \u00e0 3,3V. Le LTM4678 atteint un pic de rendement de 90%, de12V en entr\u00e9e \u00e0 0,9V en sortie, \u00e0 50A. Il g\u00e9n\u00e8re 40A, de12V en entr\u00e9e \u00e0 0,9V en sortie, \u00e0 la temp\u00e9rature ambiante de 70\u00b0C, avec un flux d\u2019air de 200LFM. La fr\u00e9quence de d\u00e9coupage est de 350kHz \u00e0 1MHz et peut \u00eatre synchronis\u00e9e \u00e0 une horloge externe de 350kHz \u00e0 1MHz pour les applications sensibles au bruit. <\/p>\n

La forte densit\u00e9 de puissance et la modularit\u00e9 du LTM4678 le rendent appropri\u00e9 aux contraintes d\u2019espace des cartes PCB des syst\u00e8mes \u00e0 forte densit\u00e9 de composants pour l\u2019alimentation des composants num\u00e9riques \u00e9volu\u00e9s. <\/p>\n

www.analog.com\/LTM4678<\/a>.<\/p>\n

Circuit int\u00e9gr\u00e9 de comptage \u00e0 auto\u00e9talonnage <\/a><\/h3>\n

R\u00e9gulateur \u00b5Module parfait pour le contr\u00f4le des LED<\/a><\/h3>\n

Un module optique pour r\u00e9duire les fausses alarmes g\u00e9n\u00e9r\u00e9es par les d\u00e9tecteurs de fum\u00e9e<\/a><\/h3>\n","protected":false},"excerpt":{"rendered":"

Analog Devices annonce le Power by Linear LTM4678, un r\u00e9gulateur \u00b5Module abaisseur, simple 50A ou double 25A, \u00e0 interface num\u00e9rique PMBus. En superposant et exposant les deux inductances sur le bo\u00eetier BGA, le LTM4678 utilise deux inductances en tant que radiateurs pour transf\u00e9rer la chaleur de l\u2019int\u00e9rieur, ce qui refroidit le composant. <\/p>\n","protected":false},"author":9,"featured_media":111183,"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-111182","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"R\u00e9gulateur \u00b5Module 50A, extensible jusqu\u2019\u00e0 250A ...<\/title>\n<meta name=\"description\" content=\"Analog Devices annonce le Power by Linear LTM4678, un r\u00e9gulateur \u00b5Module abaisseur, simple 50A ou double 25A, \u00e0 interface num\u00e9rique PMBus. En superposant...\" \/>\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\/111182\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"R\u00e9gulateur \u00b5Module 50A, extensible jusqu\u2019\u00e0 250A\" \/>\n<meta property=\"og:description\" content=\"Analog Devices annonce le Power by Linear LTM4678, un r\u00e9gulateur \u00b5Module abaisseur, simple 50A ou double 25A, \u00e0 interface num\u00e9rique PMBus. En superposant et exposant les deux inductances sur le bo\u00eetier BGA, le LTM4678 utilise deux inductances en tant que radiateurs pour transf\u00e9rer la chaleur de l\u2019int\u00e9rieur, ce qui refroidit le composant.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/111182\/\" \/>\n<meta property=\"og:site_name\" content=\"EENewsEurope\" \/>\n<meta property=\"article:published_time\" content=\"2018-08-30T21:00:44+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ecinews.fr\/wp-content\/uploads\/import\/default\/files\/sites\/default\/files\/images\/eci6545_ltm4678.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2100\" \/>\n\t<meta property=\"og:image:height\" content=\"1500\" \/>\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\" content=\"Written by\" 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