{"id":109522,"date":"2018-09-18T20:31:44","date_gmt":"2018-09-18T20:31:44","guid":{"rendered":"https:\/\/\/driver-de-ventilateur-a-faible-bruit-pour-applications-automobiles\/"},"modified":"2018-09-18T20:31:44","modified_gmt":"2018-09-18T20:31:44","slug":"driver-de-ventilateur-a-faible-bruit-pour-applications-automobiles","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/driver-de-ventilateur-a-faible-bruit-pour-applications-automobiles\/","title":{"rendered":"Driver de ventilateur \u00e0 faible bruit pour applications automobiles"},"content":{"rendered":"<p>Le MLX90411 fonctionne \u00e0 partir d&rsquo;une tension de 3V \u00e0 28V, ce qui est parfait pour toutes les applications n\u00e9cessitant une alimentation de 5V, 12V ou 24V. Cela comprend certains appareils m\u00e9nagers comme les purificateurs d&rsquo;air, ainsi que de nombreux produits blancs. Dans nombre de ces applications, les moteurs asynchrones \u00e0 courant alternatif sont remplac\u00e9s par des moteurs sans balais, et un driver simple enroulement, comme le MLX90411, reste la solution pr\u00e9f\u00e9r\u00e9e.<\/p>\n<p>Pour les applications automobiles, le dispositif peut tre reli\u00e9 directement \u00e0 la batterie sans protection suppl\u00e9mentaire, gr\u00e2ce \u00e0 sa capacit\u00e9 \u00e0 supporter des impulsions de rupture de charge jusqu&rsquo;\u00e0 40V. Il s\u2019agit du premier driver de ventilateur compatible ASIL au monde, et il fonctionne dans la plage de temp\u00e9rature allant de -40\u00b0C \u00e0 +150\u00b0C.<\/p>\n<p>De multiples options de commutation sont disponibles, assurant \u00e0 la fois un faible niveau EMI (Electro Magnetic Interference, ou parasite \u00e9lectromagn\u00e9tique) et un faible bruit acoustique. Un algorithme de commande adaptatif brevet\u00e9 assure le couple maximum et le courant inverse minimum dans toutes les conditions de fonctionnement, quelle que soit la conception du moteur. Le contr\u00f4le en boucle ouverte ou en boucle ferm\u00e9e est possible, avec un large \u00e9ventail de param\u00e8tres dynamiques (PI), pour une plage de vitesse allant jusqu&rsquo;\u00e0 45.000&nbsp;T\/min.<\/p>\n<p>Le MLX90411 est dot\u00e9 de plusieurs fonctions de protection int\u00e9gr\u00e9es, notamment en cas de blocage du rotor, de surchauffe, de surtension, de court-circuit ou de surintensit\u00e9. Ces fonctions facilitent la certification UL\/CE, mais elles r\u00e9pondent aussi aux exigences automobiles les plus strictes.<\/p>\n<p>Le dispositif est programmable via une interface I2C et toutes les options sont param\u00e9trables dans l&rsquo;EEPROM embarqu\u00e9e. Bas\u00e9 sur une&nbsp;technologie 0,18\u03bc, le minuscule MLX90411 est disponible en bo\u00eetier SOT \u00e0 pattes ou en bo\u00eetier UTDFN de 2,5&nbsp;x&nbsp;2,0&nbsp;x&nbsp;0,4&nbsp;mm.<\/p>\n<p>A propos de ces nouveaux produits, Dirk Leman, Responsable de la gamme de produits Commandes moteurs, d\u00e9clare&nbsp;: \u00ab&nbsp;Melexis a une longue histoire dans le domaine des drivers de ventilateur \u00e0 simple enroulement pour applications informatiques grand public. Le MLX90411 \u00e9tend notre offre \u00e0 l\u2019\u00e9lectrom\u00e9nager et aux produits blancs, tout en proposant une solution robuste pour l&rsquo;automobile. La commande de vitesse en boucle ferm\u00e9e et la commande de commutation adaptative offrent de vrais avantages aux concepteurs.&nbsp;\u00bb Des \u00e9chantillons du MLX90411 sont livrables d\u00e8s maintenant, tandis que les livraisons en volume devraient intervenir plus tard cette ann\u00e9e.<\/p>\n<p><a href=\"http:\/\/www.melexis.com\/%20\/t%20_blank\">www.melexis.com<\/a><\/p>\n<h3 class=\"title\"><a href=\"http:\/\/www.electronique-eci.com\/Learning-center\/les-progres-de-la-technologie-des-capteurs-seront-determinants-pour-les-projets-0\">Les progr\u00e8s de la technologie des capteurs seront d\u00e9terminants pour les projets automobile de nouvelle g\u00e9n\u00e9ration<\/a><\/h3>\n<h3 class=\"title\"><a href=\"http:\/\/www.electronique-eci.com\/Learning-center\/simplifier-liot-sub-ghz\">Simplifier l&rsquo;IoT Sub-GHz<\/a><\/h3>\n<h3 class=\"title\"><a href=\"http:\/\/www.electronique-eci.com\/news\/melexis-bientot-corbeil-essonnes\">Melexis bient\u00f4t \u00e0 Corbeil-Essonnes<\/a><\/h3>\n","protected":false},"excerpt":{"rendered":"<p>Melexis annonce un nouveau CI driver de ventilateur \u00e0 simple enroulement, capable de fournir 600 mA sous 24V, soit 15W, et qui convient \u00e0 un large \u00e9ventail d&rsquo;applications n\u00e9cessitant des performances \u00e9lev\u00e9es et un fonctionnement silencieux.<\/p>\n","protected":false},"author":9,"featured_media":109523,"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-109522","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Driver de ventilateur \u00e0 faible bruit pour applications automob...<\/title>\n<meta name=\"description\" content=\"Melexis annonce un nouveau CI driver de ventilateur \u00e0 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