{"id":225109,"date":"2012-09-13T22:00:00","date_gmt":"2012-09-13T22:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/pont-driver-moteur-dc-avec-reference-de-courant-pwm\/"},"modified":"2012-09-13T22:00:00","modified_gmt":"2012-09-13T22:00:00","slug":"pont-driver-moteur-dc-avec-reference-de-courant-pwm","status":"publish","type":"post","link":"https:\/\/test.ecinews.fr\/fr\/pont-driver-moteur-dc-avec-reference-de-courant-pwm\/","title":{"rendered":"Pont driver moteur DC avec r\u00e9f\u00e9rence de courant PWM"},"content":{"rendered":"<p style=\"margin-bottom:0cm;margin-bottom:.0001pt;line-height:normal\" class=\"MsoNormal\">D&rsquo;une conception unique, ce driver incorpore une pompe de charge &agrave; 2 &eacute;tages qui autorise une faible r&eacute;sistance de sortie sur toute la gamme de tensions d&rsquo;alimentation&nbsp; de 9 V &agrave; 2.5 V. Cette caract&eacute;ristique am&eacute;liore grandement la dur&eacute;e de vie de la batterie &agrave; faible tension &nbsp;car, gr&acirc;ce &agrave; une commande de grille r&eacute;duite, les transistors ne deviennent pas hautement r&eacute;sistifs. Ceci implique davantage d&rsquo;&eacute;nergie pour la charge et une plus faible temp&eacute;rature et dissipation thermique pour le pont. Lors de conditions de sur-courant ou de rotor bloqu&eacute;, un timer PWM, &agrave; temps off fixe, r&egrave;gle le sur-courant en conjonction avec une r&eacute;sistance de sens. Une alerte est alors fournie &agrave; l&rsquo;utilisateur lorsque le courant dans le moteur atteint le courant pic.<br \/>\nCe circuit cible les applications de contr&ocirc;le moteur fonctionnant avec de faibles tensions batterie pour les march&eacute;s grand public, industriels, et m&eacute;dicaux. Les applications typiques sont les appareils pour les points de vente TPV\/TPE, les interfaces de jeux, les appareils aliment&eacute;s par port USB, les appareils photos, la robotique, le contr&ocirc;le de vannes, et de pompes m&eacute;dicales<br \/>\nCe composant sans plomb, &agrave; &eacute;tamage 100% &eacute;tain mat, est propos&eacute; en bo&icirc;tier QFN de 3 x 3 mm et de 0.75 mm de haut, avec une semelle pour am&eacute;liorer la dissipation thermique.<\/p>\n<p style=\"margin-bottom:0cm;margin-bottom:.0001pt;line-height:normal\" class=\"MsoNormal\">&nbsp;<\/p>\n<p><a href=\"http:\/\/www.allegromicro.com\/en\/Products\/Motor-Driver-And-Interface-ICs\/Brush-DC-Motor-Drivers\/A3918.aspx\" target=\"_blank\" title=\"www.allegromicro.com\" rel=\"noopener\">www.allegromicro.com\/en\/Products\/Motor-Driver-And-Interface-ICs\/Brush-DC-Motor-Drivers\/A3918.aspx<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Capable de fournir un courant de 1A et de fonctionner sous des tensions de 2.5 V \u00e0 9 V, l\u2019A3918 d\u2019Allegro MicroSystems Europe est un circuit pont complet de commande moteur DC. Une r\u00e9f\u00e9rence de courant interne \u00e0 PWM permet \u00e0 l\u2019utilisateur de s\u00e9lectionner le courant de cr\u00eate via une simple r\u00e9sistance. L\u2019alimentation unique et la logique d\u2019interface simple le destine aux applications fonctionnant sur batterie lithium-ion simple cellule.<\/p>\n","protected":false},"author":22,"featured_media":225110,"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-225109","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Pont driver moteur DC avec r\u00e9f\u00e9rence de courant PWM ...<\/title>\n<meta name=\"description\" content=\"Capable de fournir un courant de 1A et de fonctionner sous des tensions de 2.5 V \u00e0 9 V, l\u2019A3918 d\u2019Allegro MicroSystems Europe est un circuit pont...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/test.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/225109\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pont driver moteur DC avec r\u00e9f\u00e9rence de courant PWM\" \/>\n<meta property=\"og:description\" content=\"Capable de fournir un courant de 1A et de fonctionner sous des tensions de 2.5 V \u00e0 9 V, l\u2019A3918 d\u2019Allegro MicroSystems Europe est un circuit pont complet de commande moteur DC. Une r\u00e9f\u00e9rence de courant interne \u00e0 PWM permet \u00e0 l\u2019utilisateur de s\u00e9lectionner le courant de cr\u00eate via une simple r\u00e9sistance. 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