{"id":212161,"date":"2016-05-04T06:00:00","date_gmt":"2016-05-04T06:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/driver-de-moteur-pas-a-pas-bipolaire-2-canaux-40-v-2-0-a\/"},"modified":"2016-05-04T06:00:00","modified_gmt":"2016-05-04T06:00:00","slug":"driver-de-moteur-pas-a-pas-bipolaire-2-canaux-40-v-2-0-a","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/driver-de-moteur-pas-a-pas-bipolaire-2-canaux-40-v-2-0-a\/","title":{"rendered":"Driver de moteur pas-\u00e0-pas bipolaire 2 canaux, 40 V, 2.0 A"},"content":{"rendered":"<p>Les applications cible de ce circuit sont, notamment, les cam\u00e9ras de surveillance, les DAB, les \u00e9quipements bureautiques, l&rsquo;automatisation industrielle et les appareils m\u00e9nagers.<\/p>\n<p>Cette puce deux-en-un dispose de 2 canaux pour piloter simultan\u00e9ment deux moteurs pas-\u00e0 pas. L&rsquo;int\u00e9gration de ces fonctions dans une seule puce permet de gagner une place pr\u00e9cieuse sur la carte, afin de r\u00e9duire l&rsquo;encombrement du dispositif. La chaleur produite par le circuit lui-m\u00eame \u00e9tait l&rsquo;une des raisons pour lesquelles les drivers conventionnels ne pouvaient fonctionner en continu dans le cas d&rsquo;applications n\u00e9cessitant des courants de l&rsquo;ordre de 2.0 A. D\u00e9sormais, ce composant est capable de piloter simultan\u00e9ment deux canaux, gr\u00e2ce \u00e0 une r\u00e9sistance \u00e0 l&rsquo;\u00e9tat passant tr\u00e8s faible de 0.6 ohm, soit 50% de moins que les produits pr\u00e9c\u00e9dents, ce qui r\u00e9duit consid\u00e9rablement la chaleur d\u00e9gag\u00e9e.<\/p>\n<p>De plus, dans les produits pr\u00e9c\u00e9dents, le r\u00e9gulateur de tension de la logique interne du CI fonctionnait m\u00eame en veille. Gr\u00e2ce \u00e0 l&rsquo;int\u00e9gration d&rsquo;une fonction \u00ab\u00a0sommeil\u00a0\u00bb, ce driver de derni\u00e8re g\u00e9n\u00e9ration est capable de couper le r\u00e9gulateur en situation de veille, ce qui r\u00e9duit la consommation. En outre, il peut non seulement piloter des moteurs pas-\u00e0-pas, mais il fournit aussi une interface pour piloter les moteurs DC \u00e0 balais. Par exemple, un canal peut \u00eatre utilis\u00e9 pour piloter un moteur pas-\u00e0-pas, alors que l&rsquo;autre pilote des moteur DC \u00e0 balais.<\/p>\n<p>Pour r\u00e9duire les vibrations et le niveau sonore, ce circuit offre un mode de pilotage haute-r\u00e9solution par quart de pas (maxi) et une fonction de commutation avec un mode att\u00e9nuation pour un contr\u00f4le \u00e0 courant constant. Les fonctions de d\u00e9tection d&rsquo;erreurs int\u00e9gr\u00e9es comprennent notamment un circuit de coupure thermique et un circuit de protection en cas de surintensit\u00e9, assurant ainsi une fiabilit\u00e9 et une s\u00e9curit\u00e9 optimum.<\/p>\n<p>Ce produit se pr\u00e9sente actuellement en bo\u00eetier HTSSOP compact de 12.5 x 8.1 x 1.2 mm, mais une autre version encore plus petite en bo\u00eetier QFN est pr\u00e9vue.<\/p>\n<p><a href=\"http:\/\/www.toshiba.semicon-storage.com\/\" target=\"_blank\" rel=\"noopener\">www.toshiba.semicon-storage.com<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Offrant une tension nominale de 40 V et des courants jusqu&rsquo;\u00e0 2.0 A, le driver de moteur pas-\u00e0-pas bipolaire 2 canaux TC78S122FNG de Toshiba Electronics apporte aux concepteurs la possibilit\u00e9 de gagner de la place, de r\u00e9duire la consommation et la dissipation thermique, tout en minimisant les vibrations et le niveau sonore des syst\u00e8mes de commande moteur rapides.<\/p>\n","protected":false},"author":9,"featured_media":212162,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[890],"domains":[47],"ppma_author":[1141],"class_list":["post-212161","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","tag-powermanagement-fr","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Driver de moteur pas-\u00e0-pas bipolaire 2 canaux, 40 V, 2.0 A ...<\/title>\n<meta name=\"description\" content=\"Offrant une tension nominale de 40 V et des courants jusqu&#039;\u00e0 2.0 A, le driver de moteur pas-\u00e0-pas bipolaire 2 canaux TC78S122FNG de Toshiba Electronics...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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