{"id":224269,"date":"2012-05-10T22:00:00","date_gmt":"2012-05-10T22:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/circuits-de-commande-de-grille-en-demi-pont\/"},"modified":"2012-05-10T22:00:00","modified_gmt":"2012-05-10T22:00:00","slug":"circuits-de-commande-de-grille-en-demi-pont","status":"publish","type":"post","link":"https:\/\/test.ecinews.fr\/fr\/circuits-de-commande-de-grille-en-demi-pont\/","title":{"rendered":"Circuits de commande de grille en demi-pont"},"content":{"rendered":"<p class=\"MsoNormal\" style=\"margin-bottom:0cm;margin-bottom:.0001pt\">Ces circuits se caract&eacute;risent par un temps de propagation de groupe inf&eacute;rieur &agrave; 55&nbsp;ns et une adaptation de retard inf&eacute;rieure &agrave; 5&nbsp;ns, ce qui repr&eacute;sente un fonctionnement quatre fois plus rapide que celui des circuits de commande utilisant des optocoupleurs. Ils sont conformes aux actuels standards de s&eacute;curit&eacute; gr&acirc;ce &agrave; une isolation renforc&eacute;e jusqu&rsquo;&agrave; 5&nbsp;kVeff et &agrave; une isolation galvanique de 700&nbsp;V cr&ecirc;te entre les sorties &quot;high-side&quot; et &quot;low-side&quot; des circuits de commande. Cette protection minimise les risques de conduction crois&eacute;e tout en am&eacute;liorant la fiabilit&eacute; et la s&eacute;curit&eacute; des &eacute;quipements.<\/p>\n<p class=\"MsoNormal\" style=\"margin-bottom:0cm;margin-bottom:.0001pt\">&quot;Les circuits de commande &agrave; optocoupleurs affichent g&eacute;n&eacute;ralement des performances m&eacute;diocres sur le plan de la rapidit&eacute;, ce qui allonge les temps morts et peut affecter le rendement op&eacute;rationnel global. De plus, les optocoupleurs utilisent des diodes LED particuli&egrave;rement gourmandes en &eacute;nergie qui s&rsquo;usent assez facilement et peuvent limiter la dur&eacute;e de vie des circuits de commande de grille&quot;, a d&eacute;clar&eacute; Bob Briano, responsable du marketing Isolation Num&eacute;rique chez&nbsp; Analog Devices. &quot;En utilisant une alimentation ordinaire &agrave; titre d&rsquo;exemple, les nouveaux circuits de commande de grille &agrave; isolation num&eacute;rique d&rsquo;ADI pr&eacute;sentent une fiabilit&eacute;, une vitesse et une temp&eacute;rature de commutation sensiblement accrues dans un bo&icirc;tier plus compact. Cette combinaison se traduit par une plus grande densit&eacute; de puissance et un meilleur rendement de l&rsquo;alimentation.&quot;<\/p>\n<p class=\"MsoNormal\" style=\"margin-bottom:0cm;margin-bottom:.0001pt\">Avec deux canaux d&rsquo;isolation ind&eacute;pendants, ces composants fonctionnent dans la plage de tension d&rsquo;alimentation comprise entre 3,3 V et 5,5&nbsp;V, ce qui convient aux syst&egrave;mes aliment&eacute;s sous des tensions peu &eacute;lev&eacute;es. Chaque sortie peut travailler en continu jusqu&rsquo;&agrave; 400&nbsp;Veff par rapport &agrave; l&rsquo;entr&eacute;e. La tension diff&eacute;rentielle entre &quot;high-side&quot; et &quot;low-side&quot; peut atteindre une tension de cr&ecirc;te de 700&nbsp;V, ce qui fait de ces circuits une solution id&eacute;ale pour assurer un contr&ocirc;le parfaitement fiable dans une large plage de tension de bus. <\/p>\n<p class=\"MsoNormal\" style=\"margin-bottom:0cm;margin-bottom:.0001pt\">Le mod&egrave;le ADuM3223 assure une isolation jusqu&rsquo;&agrave; 3&nbsp;kVeff en bo&icirc;tier SOIC &eacute;troit &agrave; 16 contacts, tandis que l&rsquo; ADuM4223 garantit une isolation jusqu&rsquo;&agrave; 5&nbsp;kVeff en bo&icirc;tier SOIC large &agrave; 16 contacts.<\/p>\n<p class=\"MsoNormal\" style=\"margin-bottom:0cm;margin-bottom:.0001pt\">&nbsp;<\/p>\n<p class=\"MsoNormal\" style=\"margin-bottom:0cm;margin-bottom:.0001pt\"><a href=\"http:\/\/www.analog.com\/ADuM3223\" target=\"_blank\" title=\"www.analog.com\" rel=\"noopener\">www.analog.com\/ADuM3223<\/a> <\/p>\n<p class=\"MsoNormal\" style=\"margin-bottom:0cm;margin-bottom:.0001pt\"><a href=\"http:\/\/www.analog.com\/ADuM4223\" target=\"_blank\" title=\"www.analog.com\" rel=\"noopener\">www.analog.com\/ADuM4223<\/a><span style=\"font-size:12.0pt;line-height:115%\"><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Analog Devices annonce l\u2019introduction des circuits de commande de grille 4 A en demi-pont ADuM3223 et ADuM4223 incorporant la technologie d\u2019isolation num\u00e9rique propri\u00e9taire iCoupler. Ils sont quatre fois plus rapides que les solutions bas\u00e9es sur la technologie d\u2019optocoupleurs et affichent une long\u00e9vit\u00e9 op\u00e9rationnelle de 50 ans. Ils sont con\u00e7us pour am\u00e9liorer les performances et le rendement des alimentations en courant alternatif-continu et continu-continu, des onduleurs solaires et des applications de commande de moteur tout en r\u00e9pondant aux exigences de s\u00e9curit\u00e9 inh\u00e9rentes \u00e0 ces applications.<\/p>\n","protected":false},"author":22,"featured_media":224270,"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-224269","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Circuits de commande de grille en demi-pont ...<\/title>\n<meta name=\"description\" content=\"Analog Devices annonce l\u2019introduction des circuits de commande de grille 4 A en demi-pont ADuM3223 et ADuM4223 incorporant la technologie d\u2019isolation...\" \/>\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\/224269\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Circuits de commande de grille en demi-pont\" \/>\n<meta property=\"og:description\" content=\"Analog Devices annonce l\u2019introduction des circuits de commande de grille 4 A en demi-pont ADuM3223 et ADuM4223 incorporant la technologie d\u2019isolation num\u00e9rique propri\u00e9taire iCoupler. Ils sont quatre fois plus rapides que les solutions bas\u00e9es sur la technologie d\u2019optocoupleurs et affichent une long\u00e9vit\u00e9 op\u00e9rationnelle de 50 ans. Ils sont con\u00e7us pour am\u00e9liorer les performances et le rendement des alimentations en courant alternatif-continu et continu-continu, des onduleurs solaires et des applications de commande de moteur tout en r\u00e9pondant aux exigences de s\u00e9curit\u00e9 inh\u00e9rentes \u00e0 ces applications.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/test.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/224269\/\" \/>\n<meta property=\"og:site_name\" content=\"EENewsEurope\" \/>\n<meta property=\"article:published_time\" content=\"2012-05-10T22:00:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/test.ecinews.fr\/wp-content\/uploads\/import\/default\/files\/import\/eci6105_120418-adum3223-pr-shot-no-title.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"1200\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"eeNews Europe\" \/>\n<meta name=\"twitter:card\" 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