{"id":408286,"date":"2022-12-09T18:39:48","date_gmt":"2022-12-09T17:39:48","guid":{"rendered":"https:\/\/www.eenewseurope.com\/?p=408286"},"modified":"2022-12-09T18:44:59","modified_gmt":"2022-12-09T17:44:59","slug":"408286","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/408286\/","title":{"rendered":"EPC bouscule la conversion d’\u00e9nergie dans l’automobile"},"content":{"rendered":"

La soci\u00e9t\u00e9 am\u00e9ricaine EPC (Electronic Power Conversion) vient de pr\u00e9senter deux nouveaux FET GaN qualifi\u00e9s AEC-Q101 80 V, offrant aux concepteurs des solutions plus compacts et plus efficaces que les MOSFET silicium pour la conversion 48 V-12 V CC-CC, adapt\u00e9s aux applications automobiles pour l\u2019info-divertissement et le lidar de conduite autonome.<\/strong><\/p>\n

EPC \u00e9largit sa gamme de transistors en nitrure de gallium pour l’automobile avec deux nouveaux produits. l’EPC2204A 80 V, 6 m\u03a9 qui d\u00e9livre un courant puls\u00e9 de 125 A dans encombrement de 2, 5 x 1. 5 mm\u00a0 et de l’EPC2218A de 80 V, 3,2 m\u03a9 qui d\u00e9livre un courant puls\u00e9 de 231 A dans un encombrement de 3,5 mm x 1,95 mm. Ces deux composants sont nettement plus petits et plus efficaces que les MOSFET en silicium pour la conversion d’\u00e9nergie 48V-12V, dans l’automobile, pour de multiple applications :\u00a0 convertisseurs bidirectionnels 48 V \u2013 12 V pour les voitures hybrides l\u00e9g\u00e8res, 24 V \u2013 48 V CC-CC dans les voitures et les camions, et les applications d\u2019info-divertissement, d\u2019\u00e9clairage et ADAS.<\/p>\n

Des charges de grille plus faibles (QGD) et des pertes de r\u00e9cup\u00e9ration inverse nulles permettent un fonctionnement \u00e0 haute fr\u00e9quence de 1 MHz et plus. Associ\u00e9s \u00e0 un rendement \u00e9lev\u00e9 dans un encombrement r\u00e9duit, la densit\u00e9 de puissance est plus \u00e9l\u00e9v\u00e9e.<\/p>\n

Par exemple, pour les convertisseurs 48 V-12 V de 2 kW \u00e0 4 kW, les dispositifs GaN permettent une fr\u00e9quence cinq fois sup\u00e9rieure \u00e0 celle des solutions MOSFET au silicium. De plus, avec un quart de l’inductance, la taille de l’inductance et les pertes sont r\u00e9duites, ce qui permet d’augmenter de 40 % le courant par phase et jusqu’\u00e0 la moiti\u00e9 des phases pour un co\u00fbt de syst\u00e8me inf\u00e9rieur et une taille r\u00e9duite de moiti\u00e9. Malgr\u00e9 l’encombrement r\u00e9duite, le rendement augmente jusqu’\u00e0 98 %, soit plus de 2 % de plus que les solutions MOSFET.<\/p>\n

Pour les DC-DC de faible puissance, tels que ceux utilis\u00e9s pour les applications d’info-divertissement, le GaN peux fonctionner \u00e0 2 MHz et plus pour \u00e9viter les interf\u00e9rences.\u00a0La vitesse de commutation rapide du GaN, avec des transitions inf\u00e9rieures \u00e0 la nanoseconde et la capacit\u00e9 de g\u00e9n\u00e9rer des impulsions de courant \u00e9lev\u00e9 en moins de 3 ns, offre une autonomie et une r\u00e9solution plus \u00e9lev\u00e9es dans les lidars pour la conduite autonome, le stationnement et la pr\u00e9vention des collisions.<\/p>\n

EPC<\/a>\u00a0 –\u00a0 EPC2204A<\/a><\/p>\n

Autre article<\/strong> : Nouveau circuit int\u00e9gr\u00e9 Lidar qualifi\u00e9 AEC \u00e0 conversion de puissance efficace<\/span><\/a><\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

La soci\u00e9t\u00e9 am\u00e9ricaine EPC (Electronic Power Conversion) vient de pr\u00e9senter deux nouveaux FET GaN qualifi\u00e9s AEC-Q101 80 V, offrant aux concepteurs des solutions plus compacts et plus efficaces que les MOSFET silicium pour la conversion 48 V-12 V CC-CC, adapt\u00e9s aux applications automobiles pour l\u2019info-divertissement et le lidar de conduite autonome. EPC \u00e9largit sa gamme […]<\/p>\n","protected":false},"author":11,"featured_media":408290,"comment_status":"closed","ping_status":"closed","sticky":true,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[1640,2400,1696,2215],"domains":[39],"ppma_author":[1143],"class_list":["post-408286","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","tag-automobile","tag-conversion-denergie","tag-info-divertissement","tag-lidar-fr","domains-eenews-europe"],"acf":[],"yoast_head":"EPC bouscule la conversion d'\u00e9nergie dans l'automobile ...<\/title>\n<meta name=\"description\" content=\"La soci\u00e9t\u00e9 am\u00e9ricaine EPC (Electronic Power Conversion) vient de pr\u00e9senter deux nouveaux FET GaN qualifi\u00e9s AEC-Q101 80 V, offrant aux concepteurs des...\" \/>\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\/408286\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"EPC bouscule la conversion d'\u00e9nergie dans l'automobile\" \/>\n<meta property=\"og:description\" content=\"La soci\u00e9t\u00e9 am\u00e9ricaine EPC (Electronic Power Conversion) vient de pr\u00e9senter deux nouveaux FET GaN qualifi\u00e9s AEC-Q101 80 V, offrant aux concepteurs des solutions plus compacts et plus efficaces que les MOSFET silicium pour la conversion 48 V-12 V CC-CC, adapt\u00e9s aux applications automobiles pour l\u2019info-divertissement et le lidar de conduite autonome. 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