{"id":18556,"date":"2022-10-27T15:44:34","date_gmt":"2022-10-27T13:44:34","guid":{"rendered":"https:\/\/www.itacoilweb.com\/que-sont-les-alimentations-a-resonnance-llc-lcc\/"},"modified":"2024-07-31T15:36:58","modified_gmt":"2024-07-31T13:36:58","slug":"que-sont-les-alimentations-a-resonnance-llc-lcc","status":"publish","type":"page","link":"https:\/\/www.itacoilweb.com\/fr\/articles\/que-sont-les-alimentations-a-resonnance-llc-lcc\/","title":{"rendered":"Que sont les alimentations \u00e0 r\u00e9sonnance LLC-LCC ?"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row][vc_column][vc_column_text]<div class=\"yoast-breadcrumbs\"><span><span><a href=\"https:\/\/www.itacoilweb.com\/fr\/\">Home<\/a><\/span> \u00bb <span><a href=\"https:\/\/www.itacoilweb.com\/fr\/articles\/\">Articles<\/a><\/span> \u00bb <span class=\"breadcrumb_last\" aria-current=\"page\"><strong>Que sont les alimentations \u00e0 r\u00e9sonnance LLC-LCC ?<\/strong><\/span><\/span><\/div>[\/vc_column_text][dfd_spacer screen_wide_spacer_size=&#8221;30&#8243; screen_normal_resolution=&#8221;1024&#8243; screen_tablet_resolution=&#8221;800&#8243; screen_mobile_resolution=&#8221;480&#8243;][\/vc_column][\/vc_row][vc_row][vc_column][dfd_heading style=&#8221;style_09&#8243; subtitle=&#8221;Les topologies r\u00e9sonnantes sont, \u00e0 ce jour, parmi les plus efficaces pour la conception de SMPS.&#8221; content_alignment=&#8221;text-left&#8221; delimiter_settings=&#8221;delimiter_style:solid|delimiter_width:80|delimiter_height:1&#8243; undefined=&#8221;&#8221; title_font_options=&#8221;tag:h3|font_size:32&#8243; subtitle_font_options=&#8221;tag:div&#8221; heading_margin=&#8221;margin-top:20&#8243;]<\/p>\r\n<p>Avantages et inconv\u00e9nients des alimentations \u00e0 r\u00e9sonnance LLC et LCC<\/p>\r\n<p>[\/dfd_heading][dfd_spacer screen_wide_spacer_size=&#8221;30&#8243; screen_normal_resolution=&#8221;1024&#8243; screen_tablet_resolution=&#8221;800&#8243; screen_mobile_resolution=&#8221;480&#8243;][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text]<\/p>\r\n<p style=\"text-align: justify;\">Le march\u00e9 n\u00e9cessitant plus d&#8217;efficacit\u00e9 dans les domaines de l&#8217;\u00e9clairage LED, des parcs de serveurs, de l&#8217;automatisation des portes, des chargeurs de batterie, des distributeurs automatiques, etc. est un fait largement connu.<\/p>\r\n<p style=\"text-align: justify;\">Outre les exigences li\u00e9es au marketing, de nombreuses normes imposent des objectifs d&#8217;efficacit\u00e9 de plus en plus \u00e9lev\u00e9s.<\/p>\r\n<p style=\"text-align: justify;\">Cela a conduit \u00e0 une grande r\u00e9\u00e9valuation de la topologie r\u00e9sonnante de la LLC (et dans certains cas de la LCC) au cours des derni\u00e8res ann\u00e9es.<br \/><em>Voir une comparaison entre LLC et LCC <\/em><em><a href=\"https:\/\/www.itacoilweb.com\/fr\/topologies-resonantes-llc-et-lcc\/\" target=\"_blank\" rel=\"noopener\">ici<\/a>.<\/em><\/p>\r\n<p style=\"text-align: justify;\">Tous les principaux fabricants de composants actifs sur le march\u00e9 SMPS ont donc d\u00e9velopp\u00e9 des contr\u00f4leurs permettant la r\u00e9alisation de convertisseurs \u00e0 haut rendement avec de faibles \u00e9missions EMI, avec une complexit\u00e9 de circuit particuli\u00e8rement faible.<\/p>\r\n<p>[\/vc_column_text][dfd_spacer screen_wide_spacer_size=&#8221;60&#8243; screen_normal_resolution=&#8221;1024&#8243; screen_tablet_resolution=&#8221;800&#8243; screen_mobile_resolution=&#8221;480&#8243;][\/vc_column][\/vc_row][vc_row][vc_column width=&#8221;3\/4&#8243;][vc_column_text css=&#8221;&#8221;]<\/p>\r\n<p style=\"text-align: justify;\"><strong>Avantages<\/strong><\/p>\r\n<ul>\r\n<li>En ce qui concerne la sortie de 24Vcc, une <strong>efficacit\u00e9<\/strong> typique de l&#8217;\u00e9tage LLC de 95 \u00e0 96 % avec une conception \u00e0 faible co\u00fbt ; <strong>jusqu&#8217;\u00e0 98 %<\/strong> avec la <a href=\"https:\/\/www.itacoilweb.com\/fr\/portfolio\/module-de-redressement-synchrone\/\">rectification synchrone<\/a> ;<\/li>\r\n<li>Avec des composants magn\u00e9tiques correctement con\u00e7us, la conception est tr\u00e8s <strong>rapide et simple<\/strong> ;<\/li>\r\n<li>Les formes d&#8217;ondes de courant haute fr\u00e9quence sont <strong>quasi-sinuso\u00efdales<\/strong>, avec un contenu harmonique tr\u00e8s limit\u00e9 par rapport \u00e0 d&#8217;autres topologies ;<\/li>\r\n<li>La commutation \u00e0 <strong>ZVS (Zero Voltage Switching)<\/strong> des MOSFETs permet une r\u00e9duction spectaculaire des pertes de puissance, de la taille des dissipateurs de chaleur, du stress des composants et des interf\u00e9rences \u00e9lectromagn\u00e9tiques (EMI), qui sont parmi les probl\u00e8mes de conception les plus hostiles ;<\/li>\r\n<li>Possibilit\u00e9 de faible consommation d&#8217;\u00e9nergie en charge l\u00e9g\u00e8re\/en veille en utilisant les fonctionnalit\u00e9s &#8220;<strong>mode burst<\/strong>&#8221; et &#8220;<strong>arr\u00eat PFC<\/strong>&#8221; impl\u00e9ment\u00e9es dans de nombreux contr\u00f4leurs ;<\/li>\r\n<li>Une<strong> puissance de cr\u00eate<\/strong> <strong>\u00e9lev\u00e9e<\/strong> facilement r\u00e9alisable m\u00eame avec des dimensions r\u00e9duites ; par exemple, notre transformateur avec des dimensions \u00e9gales \u00e0 la taille EF25 standard peut facilement atteindre 500-1000Wpk ;<\/li>\r\n<li>En cons\u00e9quence des \u00e9l\u00e9ments mentionn\u00e9s pr\u00e9c\u00e9demment, les alimentations \u00e9lectriques LLC et LCC ont une <strong>taille plus petite<\/strong> et des <strong>probl\u00e8mes thermiques et EMI consid\u00e9rablement r\u00e9duits<\/strong>, par rapport \u00e0 d&#8217;autres topologies ;<\/li>\r\n<li>Pour les applications sensibles \u00e0 l&#8217;injection de courant en mode commun \u00e0 travers le transformateur (par exemple, l&#8217;alimentation isol\u00e9e des drivers IGBT et SiC), la meilleure capacit\u00e9 primaire\/secondaire de sa cat\u00e9gorie est atteinte.<\/li>\r\n<\/ul>\r\n<p>[\/vc_column_text][dfd_spacer screen_wide_spacer_size=&#8221;60&#8243; screen_normal_resolution=&#8221;1024&#8243; screen_tablet_resolution=&#8221;800&#8243; screen_mobile_resolution=&#8221;480&#8243;][\/vc_column][vc_column width=&#8221;1\/4&#8243;][dfd_spacer screen_wide_spacer_size=&#8221;50&#8243; screen_normal_resolution=&#8221;1024&#8243; screen_tablet_resolution=&#8221;800&#8243; screen_mobile_resolution=&#8221;480&#8243;][dfd_single_image image=&#8221;14386&#8243;][dfd_spacer screen_wide_spacer_size=&#8221;60&#8243; screen_normal_resolution=&#8221;1024&#8243; screen_tablet_resolution=&#8221;800&#8243; screen_mobile_resolution=&#8221;480&#8243;][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text]<\/p>\r\n<p style=\"text-align: justify;\"><strong>Probl\u00e8mes cruciaux<\/strong><\/p>\r\n<ul>\r\n<li>la conception optimale du SMPS doit n\u00e9cessairement tenir compte \u00e9galement des contraintes li\u00e9es aux composants magn\u00e9tiques, sinon elle peut entra\u00eener une r\u00e9duction consid\u00e9rable de l&#8217;efficacit\u00e9;<\/li>\r\n<li>la d\u00e9finition du transformateur int\u00e9gr\u00e9 optimis\u00e9 n\u00e9cessite des comp\u00e9tences sp\u00e9cifiques ;<\/li>\r\n<li>la n\u00e9cessit\u00e9 de 2 MOSFET (demi-pont) par rapport au MOSFET simple dans les convertisseurs flyback ;<\/li>\r\n<li>un contr\u00f4leur l\u00e9g\u00e8rement plus cher par rapport \u00e0 un convertisseur flyback, mais gr\u00e2ce \u00e0 des d\u00e9penses moindres pour les dissipateurs thermiques, le filtre EMC, le transformateur plus compact, etc., le co\u00fbt total est faible pour les puissances d\u00e9passant 40-50 W.<\/li>\r\n<\/ul>\r\n<p style=\"text-align: justify;\">Si vous souhaitez voir quelques-unes des solutions de circuit les plus simples et les tests comparatifs associ\u00e9s, ouvrez les liens ci-dessous\u00a0:<\/p>\r\n<p style=\"text-align: justify;\"><a href=\"https:\/\/www.itacoilweb.com\/fr\/portfolio\/demo-boards-dorigine\/\" rel=\"noopener noreferrer\">Demo boards d&#8217;origine<\/a><\/p>\r\n<p style=\"text-align: justify;\"><a href=\"https:\/\/www.itacoilweb.com\/fr\/portfolio\/demo-boards-ameliorees\/\" rel=\"noopener noreferrer\">Demo boards am\u00e9lior\u00e9es<\/a><\/p>\r\n<p>[\/vc_column_text][dfd_spacer screen_wide_spacer_size=&#8221;60&#8243; screen_normal_resolution=&#8221;1024&#8243; screen_tablet_resolution=&#8221;800&#8243; screen_mobile_resolution=&#8221;480&#8243;][\/vc_column][\/vc_row][vc_row][vc_column width=&#8221;3\/4&#8243;][vc_column_text]<\/p>\r\n<p style=\"text-align: justify;\"><strong>Notre expertise<br \/><\/strong><\/p>\r\n<p style=\"text-align: justify;\">Nous pouvons fournir des transformateurs standard avec des r\u00e9servoirs r\u00e9sonants d\u00e9j\u00e0 correctement con\u00e7us, \u00e9tudier des variantes optimis\u00e9es de ces r\u00e9servoirs et collaborer avec le concepteur \u00e9lectronique d\u00e9finissant des r\u00e9servoirs r\u00e9sonants sur mesure afin de r\u00e9pondre \u00e0 chaque besoin sp\u00e9cifique.<\/p>\r\n<p>Nous avons beaucoup investi pour la capacit\u00e9 de fournir un support technique rapide et fiable.<br \/>Gr\u00e2ce \u00e0 l&#8217;exp\u00e9rience acquise et au support de logiciels propri\u00e9taires d\u00e9velopp\u00e9s en interne, nous sommes en mesure de concevoir en tenant compte de l&#8217;effet de peau, de l&#8217;effet de proximit\u00e9, etc., ainsi que de toutes les contraintes structurelles.<\/p>\r\n<p style=\"text-align: justify;\"><strong><br \/>Ne gaspillez pas vos ressources\u00a0:<\/strong><\/p>\r\n<p style=\"text-align: justify;\">M\u00eame un projet d&#8217;alimentation bien con\u00e7u est souvent largement optimisable lorsqu&#8217;il est revu avec nos algorithmes propri\u00e9taires.<br \/>Ils prennent en compte \u00e0 la fois les relations entre les diff\u00e9rents param\u00e8tres, toutes les contraintes structurelles et les pertes dans les \u00e9l\u00e9ments de r\u00e9servoir, notamment magn\u00e9tiques, permettant, comme cela a \u00e9t\u00e9 largement d\u00e9montr\u00e9, le plus haut niveau d&#8217;optimisation.<\/p>\r\n<p style=\"text-align: justify;\">Notre soutien au concepteur \u00e9lectronique dans les phases initiales permet, en plus d&#8217;une r\u00e9duction drastique du temps de d\u00e9veloppement, les meilleurs r\u00e9sultats en termes d&#8217;efficacit\u00e9, de temp\u00e9ratures, de co\u00fbts et de dimensions.<\/p>\r\n<p>[\/vc_column_text][dfd_spacer screen_wide_spacer_size=&#8221;60&#8243; screen_normal_resolution=&#8221;1024&#8243; screen_tablet_resolution=&#8221;800&#8243; screen_mobile_resolution=&#8221;480&#8243;][\/vc_column][vc_column width=&#8221;1\/4&#8243;][dfd_spacer screen_wide_spacer_size=&#8221;50&#8243; screen_normal_resolution=&#8221;1024&#8243; screen_tablet_resolution=&#8221;800&#8243; screen_mobile_resolution=&#8221;480&#8243;][dfd_single_image image=&#8221;17595&#8243;][dfd_spacer screen_wide_spacer_size=&#8221;60&#8243; screen_normal_resolution=&#8221;1024&#8243; screen_tablet_resolution=&#8221;800&#8243; screen_mobile_resolution=&#8221;480&#8243;][\/vc_column][\/vc_row][vc_row][vc_column width=&#8221;3\/4&#8243;][vc_column_text]<\/p>\r\n<p style=\"text-align: justify;\"><strong>Transformateur integr\u00e9<br \/><\/strong><\/p>\r\n<p style=\"text-align: justify;\">Cette d\u00e9finition fait r\u00e9f\u00e9rence \u00e0 un transformateur \u00e0 inductance de r\u00e9sonnance int\u00e9gr\u00e9e obtenu par grossissement contr\u00f4l\u00e9 de l&#8217;inductance de fuite (voir notre article technique publi\u00e9 sur diff\u00e9rents magazines \u00e9lectroniques industriels europ\u00e9ens : <a href=\"https:\/\/www.itacoilweb.com\/files\/resonant_power_supply_eng.pdf\" target=\"_blank\" rel=\"noopener\">anglais<\/a>, <a href=\"https:\/\/www.itacoilweb.com\/files\/resonant_power_supply_de.pdf\" target=\"_blank\" rel=\"noopener\">allemand<\/a>).<\/p>\r\n<p style=\"text-align: justify;\">Notre s\u00e9rie de <a href=\"https:\/\/www.itacoilweb.com\/fr\/portfolio_category\/transformateurs-resonants-integres-llc-et-lcc\/\" rel=\"noopener\">transformateurs standard<\/a> couvre les exigences de tension et de puissance les plus courantes.<\/p>\r\n<p style=\"text-align: justify;\">A ce jour, les convertisseurs qui, pour simplifier la conception, utilisent un inducteur discret en plus du transformateur conventionnel sont encore assez courants, mais ce choix est inefficace sous les aspects \u00e9conomiques, \u00e9nerg\u00e9tiques et dimensionnels.<\/p>\r\n<p>\u00c0 cela s&#8217;ajoute le bonus d&#8217;une isolation robuste et \u00e9lev\u00e9e entre l&#8217;entr\u00e9e et la sortie, l&#8217;effet secondaire des enroulements primaire et secondaire \u00e9tant plac\u00e9 dans des sections s\u00e9par\u00e9es de la bobine pour g\u00e9n\u00e9rer une inductance de fuite plus \u00e9lev\u00e9e.<\/p>\r\n<p style=\"text-align: justify;\">Nous pouvons rapidement concevoir et \u00e9chantillonner des transformateurs int\u00e9gr\u00e9s <a href=\"https:\/\/www.itacoilweb.com\/fr\/portfolio\/produits-sur-mesure\/\" rel=\"noopener\">sur mesure<\/a> optimis\u00e9s par la conception. Le besoin de r\u00e9it\u00e9rations et de r\u00e9\u00e9chantillonnage est pratiquement inexistant.<\/p>\r\n<p>Exemples\u00a0:<br \/><a href=\"https:\/\/www.itacoilweb.com\/files\/Test_comparativo_DB_Inf_38-76V_133W.pdf\" target=\"_blank\" rel=\"noopener\">LLC<\/a><br \/><a href=\"https:\/\/www.itacoilweb.com\/files\/Test_comparativo_DB_ST_LCC_300W_LLL09V1A.pdf\" target=\"_blank\" rel=\"noopener\">LCC<\/a><\/p>\r\n<p>[\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/4&#8243;][dfd_spacer screen_wide_spacer_size=&#8221;50&#8243; screen_normal_resolution=&#8221;1024&#8243; screen_tablet_resolution=&#8221;800&#8243; screen_mobile_resolution=&#8221;480&#8243;][dfd_single_image image=&#8221;17768&#8243;][\/vc_column][\/vc_row][vc_row][vc_column][dfd_spacer screen_wide_spacer_size=&#8221;50&#8243; screen_normal_resolution=&#8221;1024&#8243; screen_tablet_resolution=&#8221;800&#8243; screen_mobile_resolution=&#8221;480&#8243;][\/vc_column][\/vc_row][vc_row][vc_column width=&#8221;1\/4&#8243;][\/vc_column][vc_column width=&#8221;1\/2&#8243;][dfd_delimiter delimiter_style=&#8221;dfd-delimiter-with-text&#8221; text_delimiter=&#8221;Voir aussi&#8221; title_font_options=&#8221;font_size:20|font_style_bold:1&#8243;][dfd_spacer screen_wide_spacer_size=&#8221;30&#8243; screen_normal_resolution=&#8221;1024&#8243; screen_tablet_resolution=&#8221;800&#8243; screen_mobile_resolution=&#8221;480&#8243;][vc_column_text css=&#8221;&#8221;]<\/p>\r\n<p style=\"text-align: center;\"><a href=\"https:\/\/www.itacoilweb.com\/fr\/topologies-resonantes-llc-et-lcc\/\" rel=\"noopener\">Topologies r\u00e9sonnantes LLC et LCC<\/a><\/p>\r\n<p style=\"text-align: center;\"><a href=\"https:\/\/www.itacoilweb.com\/fr\/portfolio_category\/transformateurs-resonants-integres-llc-et-lcc\/\" rel=\"noopener\">Transformateurs r\u00e9sonnants int\u00e9gr\u00e9s LLC et LCC<\/a><\/p>\r\n<p style=\"text-align: center;\"><a href=\"https:\/\/www.itacoilweb.com\/fr\/portfolio\/module-de-redressement-synchrone\/\">Redressement Synchrone<\/a><\/p>\r\n<p style=\"text-align: center;\"><a href=\"https:\/\/www.itacoilweb.com\/fr\/services\/\" rel=\"noopener\">Services<\/a><\/p>\r\n<p style=\"text-align: center;\"><a href=\"https:\/\/www.itacoilweb.com\/fr\/recherche-et-developpement\/\" rel=\"noopener\">Recherche et D\u00e9veloppement<\/a><\/p>\r\n<p>[\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/4&#8243;][\/vc_column][\/vc_row][vc_row][vc_column][dfd_spacer screen_wide_spacer_size=&#8221;60&#8243; screen_normal_resolution=&#8221;1024&#8243; screen_tablet_resolution=&#8221;800&#8243; screen_mobile_resolution=&#8221;480&#8243;][\/vc_column][\/vc_row]<\/p><\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_row][vc_column][vc_column_text][\/vc_column_text][dfd_spacer screen_wide_spacer_size=&#8221;30&#8243; screen_normal_resolution=&#8221;1024&#8243; screen_tablet_resolution=&#8221;800&#8243; screen_mobile_resolution=&#8221;480&#8243;][\/vc_column][\/vc_row][vc_row][vc_column][dfd_heading style=&#8221;style_09&#8243; subtitle=&#8221;Les topologies r\u00e9sonnantes sont, \u00e0 ce jour, parmi les plus efficaces pour la conception de SMPS.&#8221; content_alignment=&#8221;text-left&#8221; delimiter_settings=&#8221;delimiter_style:solid|delimiter_width:80|delimiter_height:1&#8243; undefined=&#8221;&#8221; title_font_options=&#8221;tag:h3|font_size:32&#8243; subtitle_font_options=&#8221;tag:div&#8221; heading_margin=&#8221;margin-top:20&#8243;] Avantages et<\/p>\n","protected":false},"author":10,"featured_media":17162,"parent":18898,"menu_order":73,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-18556","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Que sont les alimentations \u00e0 r\u00e9sonnance LLC-LCC ? - ITACOIL transformers<\/title>\n<meta name=\"description\" content=\"La demande sans cesse croissante d&#039;efficacit\u00e9 \u00e9nerg\u00e9tique a conduit \u00e0 une r\u00e9\u00e9valuation des topologies r\u00e9sonnantes LLC et LCC. 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