{"id":268372,"date":"2022-02-02T18:32:27","date_gmt":"2022-02-02T17:32:27","guid":{"rendered":"https:\/\/www.eenewseurope.com\/?p=268372"},"modified":"2022-02-02T18:32:27","modified_gmt":"2022-02-02T17:32:27","slug":"reduire-lencombrement-dans-les-applications-alimentees-par-batteries","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/reduire-lencombrement-dans-les-applications-alimentees-par-batteries\/","title":{"rendered":"R\u00e9duire l’encombrement dans les applications aliment\u00e9es par batteries"},"content":{"rendered":"

Analog Devices, Inc.<\/u>\u00a0vient de pr\u00e9senter le convertisseur abaisseur de tension MAX77540, qui permet d\u2019assurer une conversion d\u2019\u00e9nergie \u00e0 un seul \u00e9tage dans les applications \u00e0 batteries multi-cellules, comme les casques de r\u00e9alit\u00e9 augment\u00e9e ou de r\u00e9alit\u00e9 virtuelle (AR\/VR), les radios mobiles terrestres (LMR) et les appareils photo num\u00e9riques reflex (DSLR). Le convertisseur buck MAX77540 \u00e0 forte densit\u00e9 de puissance pr\u00e9sente un rendement de pointe de 94%, et son bo\u00eetier WLP (Wafer Level Package) est 61% plus petit que les bo\u00eetiers QFN (Quad Flat No-lead) traditionnels.
\nLes applications \u00e0 batterie multi-cellules n\u00e9cessitent une conversion d\u2019\u00e9nergie \u00e0 deux \u00e9tages et une grande autonomie de batterie, tout en se tenant dans le plus petit bo\u00eetier possible. Les m\u00e9thodes traditionnelles, comme l’utilisation d’un convertisseur frontal pour abaisser la tension \u00e0 5 V ou moins, puis l’abaisser encore jusqu’aux tensions syst\u00e8me, n\u2019offrent pas un rendement suffisant et ont donc un impact sur l\u2019autonomie de la batterie du syst\u00e8me. Cette approche n\u00e9cessite un convertisseur suppl\u00e9mentaire, qui a lui-m\u00eame souvent besoin d\u2019une inductance, ce qui se traduit au bout du compte par une empreinte plus grande et un co\u00fbt plus \u00e9lev\u00e9.
\nGr\u00e2ce au MAX77540, le concepteur peut facilement cr\u00e9er une double sortie 3 A ou une seule sortie 6 A. La configuration par d\u00e9faut \u00e0 la mise sous tension ne n\u00e9cessite que deux r\u00e9sistances externes, et une interface I\u00b2C permet un contr\u00f4le suppl\u00e9mentaire pour des techniques avanc\u00e9es de gestion d\u2019\u00e9nergie. Le suivi de fr\u00e9quence externe et la modulation par \u00e9talement de spectre permettent d’assurer une conversion d\u2019\u00e9nergie avec un faible niveau d\u2019interf\u00e9rence \u00e9lectromagn\u00e9tique pour les \u00e9quipements de d\u00e9tection et de traitement de donn\u00e9es.
\nwww.analog.com<\/p>\n","protected":false},"excerpt":{"rendered":"

Analog Devices, Inc.\u00a0vient de pr\u00e9senter le convertisseur abaisseur de tension MAX77540, qui permet d\u2019assurer une conversion d\u2019\u00e9nergie \u00e0 un seul \u00e9tage dans les applications \u00e0 batteries multi-cellules, comme les casques de r\u00e9alit\u00e9 augment\u00e9e ou de r\u00e9alit\u00e9 virtuelle (AR\/VR), les radios mobiles terrestres (LMR) et les appareils photo num\u00e9riques reflex (DSLR). Le convertisseur buck MAX77540 \u00e0 […]<\/p>\n","protected":false},"author":9,"featured_media":268373,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[936,890],"domains":[47],"ppma_author":[1141],"class_list":["post-268372","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","tag-circuits-integres","tag-powermanagement-fr","domains-electronique-eci"],"acf":[],"yoast_head":"R\u00e9duire l'encombrement dans les applications aliment\u00e9es par b...<\/title>\n<meta name=\"description\" content=\"Analog Devices, Inc.\u00a0vient de pr\u00e9senter le convertisseur abaisseur de tension MAX77540, qui permet d\u2019assurer une conversion d\u2019\u00e9nergie \u00e0 un seul...\" \/>\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\/268372\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"R\u00e9duire l'encombrement dans les applications aliment\u00e9es par batteries\" \/>\n<meta property=\"og:description\" content=\"Analog Devices, Inc.\u00a0vient de pr\u00e9senter le convertisseur abaisseur de tension MAX77540, qui permet d\u2019assurer une conversion d\u2019\u00e9nergie \u00e0 un seul \u00e9tage dans les applications \u00e0 batteries multi-cellules, comme les casques de r\u00e9alit\u00e9 augment\u00e9e ou de r\u00e9alit\u00e9 virtuelle (AR\/VR), les radios mobiles terrestres (LMR) et les appareils photo num\u00e9riques reflex (DSLR). 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