{"id":420180,"date":"2023-04-26T16:54:00","date_gmt":"2023-04-26T14:54:00","guid":{"rendered":"https:\/\/www.ecinews.fr\/?p=420180"},"modified":"2023-04-26T16:55:58","modified_gmt":"2023-04-26T14:55:58","slug":"drivers-de-led-4-6-channels-pour-retroeclairages-de-lcd","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/drivers-de-led-4-6-channels-pour-retroeclairages-de-lcd\/","title":{"rendered":"Drivers de LED 4 \/ 6 channels pour r\u00e9tro\u00e9clairages de LCD"},"content":{"rendered":"\n\n\n\n\n
\n

ROHM a d\u00e9velopp\u00e9 des circuits int\u00e9gr\u00e9s de drivers de LED 4 channels\/6 channels pour les affichages automobiles<\/h2>\n

\nCes derni\u00e8res ann\u00e9es, l\u2019\u00e9volution constante des syst\u00e8mes avanc\u00e9s d\u2019aide \u00e0 la conduite (ADAS) et l\u2019am\u00e9lioration des fonctions d\u2019info-divertissement des voitures ont conduit \u00e0 l\u2019utilisation d\u2019\u00e9crans de plus grande taille. Par cons\u00e9quent, les drivers de LED pour les r\u00e9tro\u00e9clairages LCD des \u00e9crans automobiles sont n\u00e9cessaires pour fournir une excitation \u00e0 haut rendement qui am\u00e9liore le courant de sortie nominal tout en r\u00e9duisant la consommation de courant. De plus, comme le scintillement des \u00e9crans automobiles peut entra\u00eener une mauvaise visibilit\u00e9 et des conditions dangereuses, les pilotes de LED doivent \u00eatre \u00e0 m\u00eame d\u2019\u00e9viter ce sympt\u00f4me.<\/p>\n

Une technologie propri\u00e9taire \u00e0 faible consommation d\u2019\u00e9nergie<\/h3>\n

\nLes drivers de LED conventionnels consomment des quantit\u00e9s d\u2019\u00e9nergie relativement importantes et sont susceptibles de scintiller pendant l\u2019att\u00e9nuation PWM. En revanche, ROHM a d\u00e9velopp\u00e9 des drivers de LED pour les r\u00e9tro\u00e9clairages LCD qui combinent une technologie propri\u00e9taire \u00e0 faible consommation d\u2019\u00e9nergie avec une gradation PWM continue. Cela \u00e9limine le scintillement lors du changement de la luminosit\u00e9 de l\u2019affichage de \u00ab faible \u00bb \u00e0 \u00ab \u00e9lev\u00e9 \u00bb.<\/p>\n

Les drivers de LED 4 channels\/6 channels, BD83A04EFV-M<\/a>,\u00a0BD83A14EFV-M<\/a>, et\u00a0BD82A26MUF-M <\/a>tirent parti de la technologie propri\u00e9taire \u00e0 faible consommation d\u2019\u00e9nergie pour r\u00e9duire les pertes dans les circuits de contr\u00f4le des courants de driver de LED. Il en r\u00e9sulte une consommation globale de circuits int\u00e9gr\u00e9s de plus de 20 % par rapport aux produits conventionnels dans des conditions typiques (courant de circuit LED 80 mA\/canal, alimentation 12 V). Cela contribue \u00e0 une consommation d\u2019\u00e9nergie moindre dans les \u00e9crans automobiles de taille moyenne \u00e0 grande lorsque la consommation d\u2019\u00e9nergie est un probl\u00e8me.
\nDans le m\u00eame temps, tous les mod\u00e8les sont \u00e9quip\u00e9s de l’att\u00e9nuation \u00e0 la fois en DC et en PWM pour r\u00e9pondre \u00e0 un large \u00e9ventail d\u2019exigences. Il n\u2019est plus n\u00e9cessaire de changer le mode de r\u00e9troaction de courant pour un changement de luminosit\u00e9 faible\/\u00e9lev\u00e9 avec la technologie d\u2019att\u00e9nuation PWM de ROHM. Par cons\u00e9quent, le scintillement qui se produit avec l\u2019att\u00e9nuation g\u00e9n\u00e9rale des PWM est r\u00e9duit, ce qui am\u00e9liore la fiabilit\u00e9 du syst\u00e8me.<\/p>\n<\/td>\n<\/tr>\n

 <\/td>\n<\/tr>\n
www.rohm.com<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

ROHM a d\u00e9velopp\u00e9 des circuits int\u00e9gr\u00e9s de drivers de LED 4 channels\/6 channels pour les affichages automobiles Ces derni\u00e8res ann\u00e9es, l\u2019\u00e9volution constante des syst\u00e8mes avanc\u00e9s d\u2019aide \u00e0 la conduite (ADAS) et l\u2019am\u00e9lioration des fonctions d\u2019info-divertissement des voitures ont conduit \u00e0 l\u2019utilisation d\u2019\u00e9crans de plus grande taille. Par cons\u00e9quent, les drivers de LED pour les r\u00e9tro\u00e9clairages […]<\/p>\n","protected":false},"author":36,"featured_media":420181,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[1640,936],"domains":[47],"ppma_author":[1154],"class_list":["post-420180","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","tag-automobile","tag-circuits-integres","domains-electronique-eci"],"acf":[],"yoast_head":"Drivers de LED 4 \/ 6 channels pour r\u00e9tro\u00e9clairages de LCD ...<\/title>\n<meta name=\"description\" content=\"ROHM a d\u00e9velopp\u00e9 des circuits int\u00e9gr\u00e9s de drivers de LED 4 channels\/6 channels pour les affichages automobiles de taille moyenne \u00e0 grande dans...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" 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