{"id":218516,"date":"2016-03-09T07:01:00","date_gmt":"2016-03-09T07:01:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/controleurs-boost-multi-phases-synchrones-55-v-pour-lautomobile\/"},"modified":"2016-03-09T07:01:00","modified_gmt":"2016-03-09T07:01:00","slug":"controleurs-boost-multi-phases-synchrones-55-v-pour-lautomobile","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/controleurs-boost-multi-phases-synchrones-55-v-pour-lautomobile\/","title":{"rendered":"Contr\u00f4leurs boost multi-phases synchrones 55 V pour l\u2019automobile"},"content":{"rendered":"<p>Ces composants sont bien adapt\u00e9s pour des amplificateurs audio haut-de-gamme de 200 W \u00e0 800 W, les syst\u00e8mes marche-arr\u00eat et les phares \u00e0 LED de l\u2019automobile. Ils r\u00e9pondent \u00e9galement aux exigences rigoureuses des applications industrielles et de t\u00e9l\u00e9communications o\u00f9 un convertisseur \u00e9l\u00e9vateur DC\/DC doit fournir une puissance \u00e9lev\u00e9e dans une solution de petite taille.<\/p>\n<p>Ces deux contr\u00f4leurs proposent une conception modulaire pour les syst\u00e8mes pouvant \u00e9voluer au niveau thermique et en puissance. Ils affichent de larges dynamiques en entr\u00e9e et en sortie de 5 V \u00e0 55 V et atteignent un rendement de plus de 95% pour r\u00e9duire les pertes d&rsquo;\u00e9nergie et la dissipation de la chaleur. La possibilit\u00e9 d\u2019entrelacer deux contr\u00f4leurs pour une application \u00e0 quatre phases permet de doubler effectivement la puissance de sortie et de r\u00e9duire les ondulations d&rsquo;entr\u00e9e\/sortie, ce qui am\u00e8ne les concepteurs d&rsquo;alimentation \u00e0 utiliser de plus petits condensateurs minimisant l&rsquo;espace occup\u00e9 sur la carte ainsi que le co\u00fbt en composants.<\/p>\n<p>De nombreuses fonctions de protection donnent \u00e0 ces circuits la possibilit\u00e9 d&rsquo;op\u00e9rer sous pratiquement toutes les conditions. Leur fonction de d\u00e9marrage en douceur assure une transition souple du mode de conduction discontinue DCM au mode de conduction continue CCM, tout en garantissant la s\u00e9curit\u00e9 de l&rsquo;alimentation dans toutes les conditions de d\u00e9marrage.<\/p>\n<p>En ajustant ou adaptant dynamiquement la tension de sortie \u00e0 la vol\u00e9e, la fonction de suivi d&rsquo;enveloppe r\u00e9pond \u00e0 toutes les exigences concernant la charge du syst\u00e8me. Par exemple, lorsque la batterie est faible, la consommation d&rsquo;\u00e9nergie des divers composants, tels que l&rsquo;amplificateur audio, doit \u00eatre limit\u00e9e, surtout si la radio est allum\u00e9e alors que le moteur est arr\u00eat\u00e9. Des ph\u00e9nom\u00e8nes transitoires peuvent se produire et vont aussi imposer des ajustements de tension \u00e0 la vol\u00e9e, par exemple lorsque le syst\u00e8me Start-Stop red\u00e9marre le moteur.<\/p>\n<p>Pour simplifier l\u2019acc\u00e8s au niveau requis par la norme ISO 26262 Automotive Safety Integrity Level (ASIL), le mod\u00e8le ISL78229 est dot\u00e9 d\u2019une interface num\u00e9rique PMBus pour effectuer au mieux un contr\u00f4le avanc\u00e9, la t\u00e9l\u00e9m\u00e9trie et les diagnostics. Avoir cette interface PMBus int\u00e9gr\u00e9e \u00e0 la puce \u00e9vite de faire appel \u00e0 un circuit de t\u00e9l\u00e9m\u00e9trie d\u00e9di\u00e9 requis pour configurer les types de d\u00e9fauts, la r\u00e9cup\u00e9ration et la surveillance du syst\u00e8me.<\/p>\n<p>En outre, le logiciel propri\u00e9taire PowerNavigator simplifie la configuration du PMBus, la validation, la surveillance et la t\u00e9l\u00e9m\u00e9trie du composant. Cet outil facilite la modification des caract\u00e9ristiques et des fonctions sp\u00e9cifiques d\u2019une conception d&rsquo;alimentation num\u00e9rique sans \u00e9crire une seule ligne de code.<\/p>\n<p>\u00ab\u00a0Les ISL78227 et ISL78229 permettent des applications de conversion en haute puissance dans une solution de petite taille hautement efficace et offrent de multiples niveaux de protection \u00e0 l&rsquo;alimentation,\u00a0\u00bb d\u00e9clare Philip Chesley, vice-pr\u00e9sident senior des produits de pr\u00e9cision chez Intersil. \u00ab\u00a0Une combinaison unique alliant fonctionnalit\u00e9s innovantes, suivi int\u00e9gr\u00e9 et option PMBus, assure aux clients des solutions robustes et faciles \u00e0 utiliser pour leurs conceptions en haute tension.\u00a0\u00bb<\/p>\n<p>Qualifi\u00e9s AEC-Q100 pour un fonctionnement de -40 \u00b0C \u00e0 +125 \u00b0C, les ISL78227 et ISL78229 sont respectivement encapsul\u00e9s en bo\u00eetiers WFQFN 32 broches de 5 x 5 mm et WFQFN 40 broches de 6 x 6 mm. Chacun d\u2019eux dispose d\u2019une carte d\u2019\u00e9valuation d\u00e9di\u00e9e pour faciliter les d\u00e9veloppements.<\/p>\n<p><a href=\"http:\/\/www.intersil.com\/products\/isl78227\" target=\"_blank\" rel=\"noopener\">www.intersil.com\/products\/isl78227<\/a><\/p>\n<p><a href=\"http:\/\/www.intersil.com\/products\/isl78229\" target=\"_blank\" rel=\"noopener\">www.intersil.com\/products\/isl78229<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pour simplifier la conception d&rsquo;applications automobiles de forte puissance, Intersil vient d\u2019introduire les ISL78227 et ISL78229, deux contr\u00f4leurs boost 55 V biphas\u00e9s synchrones particuli\u00e8rement robustes et hautement int\u00e9gr\u00e9s, dot\u00e9s de pilotes MOSFET c\u00f4t\u00e9 high-side et low-side. Fonctionnant \u00e0 partir d\u2019une batterie de 12 V, ils augmentent la tension de sortie \u00e0 24 V, 36 V ou 48 V. <\/p>\n","protected":false},"author":22,"featured_media":218517,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[909,890],"domains":[47],"ppma_author":[1149],"class_list":["post-218516","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","tag-batteries-power-supplies-fr","tag-powermanagement-fr","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Contr\u00f4leurs boost multi-phases synchrones 55 V pour l\u2019automo...<\/title>\n<meta name=\"description\" content=\"Pour simplifier la conception d&#039;applications automobiles de forte puissance, Intersil vient d\u2019introduire les ISL78227 et ISL78229, deux contr\u00f4leurs boost...\" \/>\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\/218516\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Contr\u00f4leurs boost multi-phases synchrones 55 V pour l\u2019automobile\" \/>\n<meta property=\"og:description\" content=\"Pour simplifier la conception d&#039;applications automobiles de forte puissance, Intersil vient d\u2019introduire les ISL78227 et ISL78229, deux contr\u00f4leurs boost 55 V biphas\u00e9s synchrones particuli\u00e8rement robustes et hautement int\u00e9gr\u00e9s, dot\u00e9s de pilotes MOSFET c\u00f4t\u00e9 high-side et low-side. 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