{"id":47794,"date":"2020-08-18T22:31:44","date_gmt":"2020-08-18T22:31:44","guid":{"rendered":"https:\/\/\/controleurs-synchrones-pour-les-systemes-automobiles-allumes-en-permanence\/"},"modified":"2020-08-18T22:31:44","modified_gmt":"2020-08-18T22:31:44","slug":"controleurs-synchrones-pour-les-systemes-automobiles-allumes-en-permanence","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/controleurs-synchrones-pour-les-systemes-automobiles-allumes-en-permanence\/","title":{"rendered":"Contr\u00f4leurs synchrones pour les syst\u00e8mes automobiles allum\u00e9s en permanence"},"content":{"rendered":"

Le contr\u00f4leur buck synchrone \u00e0 double sortie ISL78264 g\u00e8re la conversion CC\/CC de premier \u00e9tage interm\u00e9diaire, abaissant le syst\u00e8me de batterie 12V \u00e0 5V et 3,3V pour alimenter l’unit\u00e9 de commande \u00e9lectronique (ECU) du v\u00e9hicule, l’infodivertissement embarqu\u00e9 (IVI) et les syst\u00e8mes de cockpit num\u00e9rique avec niveaux de puissance 50W-200W. Le contr\u00f4leur boost et buck synchrone \u00e0 double sortie ISL78263 fournit une conversion CC\/CC pour prendre en charge des niveaux de puissance de 25W-100W, tout en fournissant une pr\u00e9-amplification si la tension de la batterie (VBAT) chute \u00e0 une tension aussi basse que 2,1V pendant un transitoire de d\u00e9marrage ou un \u00e9v\u00e8nement d\u00e9marrage\/arr\u00eat.<\/p>\n

\u00ab Les ISL78264 et ISL78263 fournissent les solutions de r\u00e9gulation de puissance de l’\u00e9tage primaire id\u00e9ales pour les SoC R-Car H3 et R-Car M3 de Renesas, qui introduisent l’industrie automobile \u00e0 de nouvelles architectures \u00e9lectroniques qui am\u00e9liorent les performances, l’efficacit\u00e9, la s\u00fbret\u00e9 et la fiabilit\u00e9 des v\u00e9hicules, \u00bb a d\u00e9clar\u00e9 Niall Lyne, vice-pr\u00e9sident de la division commerciale Automotive Analog Power & Video chez Renesas. \u00ab Le fonctionnement permanent des contr\u00f4leurs et le courant de repos le plus bas de l’industrie donnent aux concepteurs de syst\u00e8mes d’alimentation la marge suppl\u00e9mentaire dont ils ont besoin pour rester dans leur budget de puissance de 100\u00b5A, et peuvent m\u00eame g\u00e9rer des budgets serr\u00e9s jusqu’\u00e0 50\u00b5A. Les ISL78264 et ISL78263 int\u00e8grent des pilotes de MOSFET puissants qui offrent une efficacit\u00e9 et une puissance plus \u00e9lev\u00e9es par rapport aux autres solutions de contr\u00f4leurs VBAT buck ou boost pour l’automobile. \u00bb<\/p>\n

Le contr\u00f4leur buck synchrone \u00e0 double sortie ISL78264 et le contr\u00f4leur boost et buck synchrone \u00e0 double sortie ISL78263 offrent un faible courant de repos (Iq) de 6\u00b5A (typique) sur un seul canal buck contribuant \u00e0 une \u00e9conomie d’\u00e9nergie. Les deux contr\u00f4leurs simplifient la conception de l’alimentation de courant en int\u00e9grant des pilotes FET qui peuvent fournir une efficacit\u00e9 de pointe de 96% et un courant de sortie >10A. Ils int\u00e8grent \u00e9galement des r\u00e9sistances de r\u00e9troaction et une diode de blocage d’alimentation externe pour les applications n\u00e9cessitant une prise en charge du d\u00e9marrage, et un spectre \u00e9tal\u00e9 programmable pour r\u00e9soudre les probl\u00e8mes d’interf\u00e9rences EMI. Par exemple, la tol\u00e9rance d’une d\u00e9charge de charge sur VBAT r\u00e9duit le co\u00fbt suppl\u00e9mentaire et la taille de la protection contre les surtensions, tandis que la prise en charge des transitoires de d\u00e9marrage r\u00e9duit la quantit\u00e9 de capacit\u00e9 d’entr\u00e9e requise. Le fait d’avoir une att\u00e9nuation EMI int\u00e9gr\u00e9e, avec une fr\u00e9quence de commutation jusqu’\u00e0 2,2MHz, r\u00e9duit \u00e9galement le co\u00fbt et la taille du filtrage\/blindage EMI. <\/p>\n

www.renesas.com\/products\/ISL78264<\/a>. <\/p>\n

www.renesas.com\/products\/ISL78263<\/a>.<\/p>\n

www.<\/a>renesas.com<\/a><\/p>\n

Pilotage moteurs avec d\u00e9tection de position inductive<\/a><\/h3>\n

Renesas \u00e9tend la connectivit\u00e9 Bluetooth 5.0 \u00e0 sa famille de microcontr\u00f4leurs RA<\/a><\/h3>\n

Modulateur Delta-Sigma optiquement isol\u00e9 haute pr\u00e9cision<\/a><\/h3>\n

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

Avec un courant de repos de 6 \u00b5A et des pilotes de MOSFET 2A source\/3A sink int\u00e9gr\u00e9s, cette paire de nouveaux contr\u00f4leurs synchrones \u00e0 double sortie 42V fournit des solutions d’\u00e9tage de puissance primaire pour les SoC R-Car H3 et R-Car M3 de Renesas.<\/p>\n","protected":false},"author":9,"featured_media":47795,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[],"domains":[47],"ppma_author":[1141],"class_list":["post-47794","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"Contr\u00f4leurs synchrones pour les syst\u00e8mes automobiles allum\u00e9s...<\/title>\n<meta name=\"description\" content=\"Avec un courant de repos de 6 \u00b5A et des pilotes de MOSFET 2A source\/3A sink int\u00e9gr\u00e9s, cette paire de nouveaux 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