{"id":123648,"date":"2018-04-25T00:31:44","date_gmt":"2018-04-25T00:31:44","guid":{"rendered":"https:\/\/\/gestionnaire-de-systeme-dalimentation-numerique\/"},"modified":"2018-04-25T00:31:44","modified_gmt":"2018-04-25T00:31:44","slug":"gestionnaire-de-systeme-dalimentation-numerique","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/gestionnaire-de-systeme-dalimentation-numerique\/","title":{"rendered":"Gestionnaire de syst\u00e8me d\u2018alimentation num\u00e9rique"},"content":{"rendered":"

La surveillance de la consommation en puissance et en \u00e9nergie d\u2019un circuit est la premi\u00e8re \u00e9tape pour g\u00e9rer, optimiser, r\u00e9duire la consommation afin de diminuer les co\u00fbts de refroidissement des serveurs et des centres de donn\u00e9es ainsi que les d\u00e9penses de fonctionnement associ\u00e9es. Le LTC2972 soulage l\u2019h\u00f4te d\u2019une charge importante de calculs et de mesures, en mesurant l\u2019\u00e9nergie d\u2019entr\u00e9e, exprim\u00e9e en joules, et la dur\u00e9e \u00e9coul\u00e9e via une interface PMBus. Quand il est associ\u00e9 aux mesures des tensions de sortie, des intensit\u00e9s et de puissance sur la charge, le LTC2972 permet une gestion, \u00e0 long terme, du rendement de conversion du syst\u00e8me d\u2019alimentation. Le LTC2972 apporte une gestion compl\u00e8te par logiciel et un contr\u00f4le des syst\u00e8mes d\u2019alimentation pour les cartes utilisant des FPGA, des ASIC ou des DSP, ce qui acc\u00e9l\u00e8re la mise sur le march\u00e9, am\u00e9liore la fiabilit\u00e9 du syst\u00e8me et optimise la consommation d\u2019\u00e9nergie.<\/p>\n

Un convertisseur analogique num\u00e9rique (CAN) 16 bits (le meilleur de sa cat\u00e9gorie) permet d\u2019ajuster les tensions de sortie d\u2019alimentation et les marges associ\u00e9es, avec une erreur totale non corrig\u00e9e (TUE) de \u00b10,25%, am\u00e9liorant les rendements et la fiabilit\u00e9 \u00e0 long terme. Les courants de sortie d\u2019alimentation sont mesur\u00e9s par une r\u00e9sistance de mesure de courant, le DCR d\u2019une inductance ou la sortie IMON d\u2019une alimentation. Les\u00e9quencement des alimentations, la supervision ainsi que le datalog des \u00e9ventuelles erreurs (enregistr\u00e9 dans l\u2019EEPROM) sont int\u00e9gr\u00e9s. Les erreurs d\u00e9clenchent un enregistrement dans une bo\u00eete noire (EEPROM), ce qui simplifie l\u2019analyse des d\u00e9faillances tout en donnant un aper\u00e7u des causes pour de futures am\u00e9liorations du syst\u00e8me. Sur chacun des canaux, les broches programmables POWER GOOD ou d\u2019usage g\u00e9n\u00e9ral d\u2019entr\u00e9e\/sortie (GPIO) sont disponibles. Le LTC2972 peut \u00eatre connect\u00e9 \u00e0 d\u2019autres gestionnaires d\u2019alimentation pour g\u00e9rer les s\u00e9quencements et les erreurs sur plus de deux tensions d\u2019alimentation. Des commandes, compatibles PMBus, sont pr\u00e9sentes pour une programmation facile et une relecture des donn\u00e9es du syst\u00e8me d\u2019alimentation. La configuration est r\u00e9alis\u00e9e gr\u00e2ce \u00e0 l\u2019environnement de d\u00e9veloppement LTpowerPlayTM qui est compatible avec tous les composants Power by Linear de gestion de syst\u00e8me d\u2019alimentation num\u00e9rique (Power System Management : PSM). Une fois programm\u00e9, aucun logiciel n\u2019est n\u00e9cessaire pour un fonctionnement autonome.<\/p>\n

Sp\u00e9cifi\u00e9 sur les gammes de temp\u00e9ratures commerciales, 0\u00b0C \u00e0 70\u00b0C, et industrielles, -40\u00b0C \u00e0 105\u00b0C, le LTC2972 est disponible en bo\u00eetier QFN de 44 broches, 6mm x 7mm.<\/p>\n

www.analog.com\/LTC2972<\/a><\/p>\n

R\u00e9gulateur de point de charge \u00b5Module 4x40A, 144W, \u00e0 refroidissement facilit\u00e9 <\/a><\/h3>\n

Solutions technologiques pour surmonter les obstacles li\u00e9s au march\u00e9 des v\u00e9hicules et syst\u00e8mes a\u00e9riens sans pilote<\/a><\/h3>\n

Carte d\u2019\u00e9valuation de circuits de commande de grille isol\u00e9s forte puissance et haute tension <\/a><\/h3>\n

R\u00e9gulateur \u00b5Module double 15A ou simple 30A, avec inductance superpos\u00e9e au bo\u00eetier<\/a><\/h3>\n

Maximiser l\u2019autonomie des ensembles de batteries pour l\u2019automobile en compensant le vieillissement des \u00e9l\u00e9ments<\/a><\/h3>\n","protected":false},"excerpt":{"rendered":"

Analog Devices annonce le Power by Linear LTC2972, un gestionnaire de syst\u00e8me d\u2019alimentation \u00e0 2 canaux, avec gestion du courant, de la puissance et de l\u2019\u00e9nergie des convertisseurs aliment\u00e9s sur une tension d\u2019entr\u00e9e d\u2019un bus interm\u00e9diaire et celle du point de charge (POL). <\/p>\n","protected":false},"author":9,"featured_media":123649,"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-123648","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"Gestionnaire de syst\u00e8me d\u2018alimentation num\u00e9rique ...<\/title>\n<meta name=\"description\" content=\"Analog Devices annonce le Power by Linear LTC2972, un gestionnaire de syst\u00e8me 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