{"id":483263,"date":"2025-07-17T08:10:33","date_gmt":"2025-07-17T06:10:33","guid":{"rendered":"https:\/\/www.ecinews.fr\/?p=483263"},"modified":"2025-07-17T08:10:33","modified_gmt":"2025-07-17T06:10:33","slug":"convertisseur-buck-gan-compact-de-180-w-pour-usb-pd","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/convertisseur-buck-gan-compact-de-180-w-pour-usb-pd\/","title":{"rendered":"Convertisseur Buck GaN compact de 180 W pour USB-PD"},"content":{"rendered":"

Efficient Power Conversion(EPC)<\/a> a lanc\u00e9 une nouvelle carte d’\u00e9valuation, l’EPC91109, destin\u00e9e \u00e0 pr\u00e9senter les avantages de la technologie GaN pour les applications USB Power Delivery (USB-PD 3.1) compactes et \u00e0 haut rendement jusqu’\u00e0 180 W. La soci\u00e9t\u00e9 note que la conception de r\u00e9f\u00e9rence exploite les FET GaN 50 V d’EPC avec un contr\u00f4leur buck biphas\u00e9 d’Analog Devices pour offrir des performances qui d\u00e9fient les \u00e9tages de puissance traditionnels \u00e0 base de silicium.<\/p>\n

L’EPC91109 pourrait int\u00e9resser les lecteurs d’ECInews qui d\u00e9veloppent de l’\u00e9lectronique de puissance<\/a> pour les appareils portables et aliment\u00e9s par batterie, les ordinateurs portables et les syst\u00e8mes industriels ou automobiles \u00e0 espace limit\u00e9. Vous voudrez peut-\u00eatre jeter un coup d’\u0153il si vous d\u00e9veloppez des applications qui requi\u00e8rent un rendement \u00e9lev\u00e9, une simplicit\u00e9 thermique et des configurations serr\u00e9es.<\/p>\n

Densit\u00e9 de puissance \u00e9lev\u00e9e sans contrainte thermique<\/h2>\n

Selon EPC, la carte d’\u00e9valuation EPC91109 int\u00e8gre quatre transistors \u00e0 effet de champ (FET) GaN EPC2057 de 50 V avec le contr\u00f4leur LTC7890 d’Analog Devices. Elle prend en charge des tensions d’entr\u00e9e comprises entre 20 V et 36 V et d\u00e9livre jusqu’\u00e0 180 W (12 V \u00e0 14,3 A) lorsqu’elle fonctionne en mode entrelac\u00e9 biphas\u00e9, ce qui est parfaitement conforme \u00e0 la sp\u00e9cification USB-PD 3.1.<\/p>\n

Malgr\u00e9 la puissance d\u00e9livr\u00e9e, EPC souligne qu’aucun dissipateur ou refroidissement par air forc\u00e9 n’est n\u00e9cessaire. \u00ab\u00a0L’EPC91109 d\u00e9montre la densit\u00e9 de puissance et l’efficacit\u00e9 du GaN pour l’USB PD. Il s’agit d’une plate-forme compacte et robuste qui ne n\u00e9cessite ni dissipateur thermique ni flux d’air, m\u00eame \u00e0 pleine puissance\u00a0\u00bb, a d\u00e9clar\u00e9 Alex Lidow, PDG d’EPC, dans un communiqu\u00e9<\/a>.<\/p>\n

L’\u00e9tage de puissance mesure 24 mm \u00d7 24 mm et utilise un inducteur de 3 mm \u00e0 profil bas, ce qui le rend adapt\u00e9 aux applications o\u00f9 l’espace de la carte et la hauteur en z sont limit\u00e9s. La configurabilit\u00e9 est un autre point fort apparent : la carte prend en charge le fonctionnement monophas\u00e9 ou biphas\u00e9 et permet aux utilisateurs de r\u00e9gler les modes de charge l\u00e9g\u00e8re et les param\u00e8tres de temps mort pour une optimisation plus pouss\u00e9e.<\/p>\n

Efficacit\u00e9 et positionnement des co\u00fbts<\/h2>\n

EPC fait \u00e9tat d’une efficacit\u00e9 maximale de plus de 98 % dans des conditions de fonctionnement standard. Cette efficacit\u00e9, combin\u00e9e aux performances thermiques et \u00e0 l’int\u00e9gration, offre aux concepteurs de syst\u00e8mes une alternative au silicium qui est plus petite, plus efficiente et plus rapide.<\/p>\n

La carte d’\u00e9valuation EPC91109 est vendue au prix de 317,09 $. Le FET GaN utilis\u00e9 dans la conception, l’EPC2057, est disponible au prix de 0,657 $ l’unit\u00e9 en bobines de 2,5Ku. La carte et les dispositifs sont en stock et disponibles via Digi-Key<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

Efficient Power Conversion(EPC) a lanc\u00e9 une nouvelle carte d’\u00e9valuation, l’EPC91109, destin\u00e9e \u00e0 pr\u00e9senter les avantages de la technologie GaN pour les applications USB Power Delivery (USB-PD 3.1) compactes et \u00e0 haut rendement jusqu’\u00e0 180 W. La soci\u00e9t\u00e9 note que la conception de r\u00e9f\u00e9rence exploite les FET GaN 50 V d’EPC avec un contr\u00f4leur buck biphas\u00e9 […]<\/p>\n","protected":false},"author":40,"featured_media":483069,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[889,3897,8665],"domains":[47],"ppma_author":[3620,6199],"class_list":["post-483263","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","tag-analog-fr","tag-gan-fr-2","tag-usb-pd-fr","domains-electronique-eci"],"acf":[],"yoast_head":"Convertisseur Buck GaN compact de 180 W pour USB-PD ...<\/title>\n<meta name=\"description\" content=\"Convertisseur buck GaN compact de 180 W sans dissipateur thermique, id\u00e9al pour les applications USB-PD, les PCs et alimentations portables\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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