{"id":223303,"date":"2012-01-03T23:00:00","date_gmt":"2012-01-03T23:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/circuit-de-controle-de-moteur-brushless-dc-3-phases-sans-capteur\/"},"modified":"2012-01-03T23:00:00","modified_gmt":"2012-01-03T23:00:00","slug":"circuit-de-controle-de-moteur-brushless-dc-3-phases-sans-capteur","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/circuit-de-controle-de-moteur-brushless-dc-3-phases-sans-capteur\/","title":{"rendered":"Circuit de contr\u00f4le de moteur brushless DC 3 phases sans capteur"},"content":{"rendered":"

Le système de pilotage du moteur utilise une commutation par bloc (commande en trapèze), où la commutation entre les phases est déterminée par la mesure de la force contre électromotrice du moteur, sans avoir besoin d’utiliser des capteurs de position indépendants.Une séquence programmable de mise en route du moteur permet à l’A4960 de pouvoir commander une large plage de moteurs et de charges. Des condensateurs de bootstrap externes sont utilisés pour fournir la tension de commande (supérieure à la tension d’alimentation) des MOSFET canal N externes. Un circuit interne de management automatique de la charge des condensateurs de bootstrap assure qu’ils soient toujours suffisamment chargés pour la commande des MOSFETs de puissance.
\nL’A4960 fonctionne sur une plage de tension allant de 7V à 50V et est compatible avec les logiques 3.3V et 5V. Les MOSFETs de puissance sont protégés contre les cross-conductions via un dead time ajustable. Le diagnostique interne comprend une indication contre les sous-tensions, les sur températures, et les erreurs sur le pont de puissance. Il peut être configuré pour protéger les MOSFETs de puissance contre la plupart des conditions de court-circuit. Les diagnostiques détaillés sont disponibles via le port série ou bien via la sortie diagnostique programmable. L’A4960 est proposé dans un boîtier eLQFP de 32 broches.<\/p>\n

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

Con\u00e7u pour \u00eatre utilis\u00e9 avec des MOSFETs canal N externes, l’A4960 d’Allegro MicroSystems Europe est un nouveau circuit contr\u00f4leur de moteur brushless 3 phases sans capteur qui int\u00e8gre de nombreux diagnostiques et protections. Il convient id\u00e9alement pour la commande de pompes et de ventilateurs pour les applications automobiles.<\/p>\n","protected":false},"author":22,"featured_media":223304,"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-223303","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"Circuit de contr\u00f4le de moteur brushless DC 3 phases sans capteur ...<\/title>\n<meta name=\"description\" content=\"Con\u00e7u pour \u00eatre utilis\u00e9 avec des MOSFETs canal N externes, l'A4960 d'Allegro MicroSystems Europe est un nouveau circuit contr\u00f4leur de moteur brushless 3...\" \/>\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\/223303\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Circuit de contr\u00f4le de moteur brushless DC 3 phases sans capteur\" \/>\n<meta property=\"og:description\" content=\"Con\u00e7u pour \u00eatre utilis\u00e9 avec des MOSFETs canal N externes, l'A4960 d'Allegro MicroSystems Europe est un nouveau circuit contr\u00f4leur de moteur brushless 3 phases sans capteur qui int\u00e8gre de nombreux diagnostiques et protections. 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