{"id":18497,"date":"2022-10-27T15:42:17","date_gmt":"2022-10-27T13:42:17","guid":{"rendered":"https:\/\/www.itacoilweb.com\/topologies-resonantes-llc-et-lcc\/"},"modified":"2024-07-31T15:36:21","modified_gmt":"2024-07-31T13:36:21","slug":"topologies-resonnantes-llc-et-lcc","status":"publish","type":"page","link":"https:\/\/www.itacoilweb.com\/fr\/articles\/topologies-resonnantes-llc-et-lcc\/","title":{"rendered":"Topologies r\u00e9sonnantes LLC et 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>Topologies r\u00e9sonnantes LLC et 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_11&#8243; subtitle=&#8221;Quels sont les avantages et les inconv\u00e9nients ? Quand utiliser l&#8217;une ou l&#8217;autre ? Voyons cela.&#8221; delimiter_settings=&#8221;delimiter_style:solid|delimiter_width:80|delimiter_height:1&#8243; undefined=&#8221;&#8221; title_font_options=&#8221;tag:h2&#8243; subtitle_font_options=&#8221;tag:div&#8221;]<\/p>\r\n<h4>Topologies r\u00e9sonnantes LLC et LCC<\/h4>\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;][dfd_call_to_action block_title=&#8221;D\u00e9couvrez d\u00e8s maintenant les avantages de CO\u00dbTS et de PERFORMANCES de la topologie LCC&#8221; block_subtitle=&#8221;Lire le rapport de test comparatif&#8221; button_text=&#8221;Cliquez pour en savoir plus&#8221; button_link=&#8221;url:https%3A%2F%2Fwww.itacoilweb.com%2Ffiles%2FTest_comparativo_DB_ST_LCC_300W_LLL09V1A.pdf|target:_blank&#8221; horizontal_padding=&#8221;35&#8243; vertical_padding=&#8221;35&#8243; main_border_radius=&#8221;6&#8243; main_style=&#8221;style-1&#8243; title_font_options=&#8221;tag:div&#8221; subtitle_font_options=&#8221;tag:div&#8221;][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><strong>Une topologie tr\u00e8s appr\u00e9ci\u00e9e&#8230;<\/strong><\/p>\r\n<p style=\"text-align: justify;\">La topologie LLC est largement reconnue comme la plus avantageuse pour les convertisseurs de commutation dans la gamme de puissance de 80&#8230;1000 W et elle est de plus en plus utilis\u00e9e dans des applications allant jusqu&#8217;\u00e0 quelques dizaines de kilowatts, telles que les \u00e9quipements de recharge de v\u00e9hicules \u00e9lectriques, pour les avantages qu&#8217;elle offre en mati\u00e8re de EMC, d&#8217;efficacit\u00e9, de dimensions des composants magn\u00e9tiques du r\u00e9servoir r\u00e9sonnant et des filtres.<\/p>\r\n<p style=\"text-align: justify;\">Le co\u00fbt des composants magn\u00e9tiques \u00e9tant globalement proportionnel \u00e0 leurs dimensions, un avantage de co\u00fbt s&#8217;ensuit.<\/p>\r\n<p style=\"text-align: justify;\"><em>Cliquez <span style=\"text-decoration: underline;\"><strong><a href=\"https:\/\/www.itacoilweb.com\/fr\/que-sont-les-alimentations-a-resonnance-llc-lcc\/\" target=\"_blank\" rel=\"noopener\">ici<\/a><\/strong><\/span> pour plus de d\u00e9tails sur les avantages des topologies r\u00e9sonnantes.<\/em><\/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_text]<\/p>\r\n<p style=\"text-align: justify;\"><strong>&#8230; et un moins populaire<\/strong><\/p>\r\n<p style=\"text-align: justify;\">M\u00eame si elle est souvent recommand\u00e9e dans la litt\u00e9rature pour certaines applications, la topologie LCC est moins connue et appliqu\u00e9e.<br \/>Par rapport \u00e0 LLC, la topologie LCC n\u00e9cessite un condensateur suppl\u00e9mentaire. La d\u00e9finition couramment utilis\u00e9e de \u00ab\u00a0LCC\u00a0\u00bb est en fait r\u00e9ductrice\u00a0: il serait plus appropri\u00e9 de l&#8217;appeler \u00ab\u00a0LLCC\u00a0\u00bb, techniquement parlant.<\/p>\r\n<p style=\"text-align: justify;\">Cette topologie r\u00e9sonante pr\u00e9sente les m\u00eames avantages que ci-dessus pour LLC, en plus d&#8217;\u00eatre optimale pour certains types d&#8217;application d\u00e9crits plus loin.<\/p>\r\n<p style=\"text-align: justify;\">Cependant, il y a quelques d\u00e9fis li\u00e9s \u00e0 la conception.<\/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_single_image image=&#8221;17764&#8243;][vc_column_text]<\/p>\r\n<p style=\"text-align: justify;\"><span style=\"font-size: 12px;\"><em>Sch\u00e9mas types des r\u00e9servoirs LLC et LCC &#8211; Compar\u00e9 \u00e0 LLC, LCC n\u00e9cessite un condensateur suppl\u00e9mentaire.<\/em><\/span><\/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><strong>Encore plus d&#8217;efficacit\u00e9 : le transformateur r\u00e9sonnant int\u00e9gr\u00e9<\/strong><\/p>\r\n<p style=\"text-align: justify;\">En appliquant des <strong><span style=\"text-decoration: underline;\"><a href=\"https:\/\/www.itacoilweb.com\/files\/resonant_power_supply_eng.pdf\" target=\"_blank\" rel=\"noopener\">transformateurs r\u00e9sonnants int\u00e9gr\u00e9s<\/a><\/span><\/strong>, qui utilisent l&#8217;inductance de fuite pour \u00e9liminer le besoin d&#8217;une inductance r\u00e9sonnante descendante, on peut obtenir un rendement, des dimensions et des avantages \u00e9conomiques encore plus importants.<\/p>\r\n<p style=\"text-align: justify;\">A 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;\">Il est \u00e0 noter que la conception des r\u00e9servoir LLC ou LCC avec transformateur int\u00e9gr\u00e9 pr\u00e9sente des complications suppl\u00e9mentaires par rapport \u00e0 une cuve avec transformateur non int\u00e9gr\u00e9, car le degr\u00e9 de libert\u00e9 pour la d\u00e9finition de la valeur de l&#8217;inductance r\u00e9sonnante est perdu.<br \/>Il est en effet li\u00e9 \u00e0 certains d\u00e9tails de construction du transformateur.<\/p>\r\n<p style=\"text-align: justify;\">Par ailleurs, la disposition des enroulements dans un transformateur int\u00e9gr\u00e9 provoque par nature une r\u00e9partition du champ magn\u00e9tique qui implique plus de pertes par rapport \u00e0 un transformateur classique.<\/p>\r\n<p style=\"text-align: justify;\">Cependant, ces deux aspects peuvent \u00eatre r\u00e9solus par des proc\u00e9dures d&#8217;optimisation ad\u00e9quates, rendant l&#8217;utilisation du transformateur int\u00e9gr\u00e9 meilleure \u00e0 tous \u00e9gards.<\/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_single_image image=&#8221;17768&#8243;][vc_column_text]<\/p>\r\n<p style=\"text-align: justify;\"><span style=\"font-size: 12px;\"><em>Dans le transformateur int\u00e9gr\u00e9, les enroulements primaire et secondaire sont plac\u00e9s dans des sections s\u00e9par\u00e9es de la bobine.<\/em><\/span><\/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>Un point faible\u00a0: de larges plages de tension<\/strong><\/p>\r\n<p style=\"text-align: justify;\">Les topologies r\u00e9sonnantes montrent leur principale faiblesse dans les applications o\u00f9 il y a de grandes variations dans la tension de fonctionnement d&#8217;entr\u00e9e ou de sortie.<\/p>\r\n<p style=\"text-align: justify;\">Si le r\u00e9servoir est correctement con\u00e7u, la \u00ab\u00a0Commutation \u00e0 Tension Nulle\u00a0\u00bb peut \u00eatre maintenue m\u00eame en pr\u00e9sence de variations de tension assez importantes, mais cela implique une r\u00e9duction des avantages par rapport \u00e0 d&#8217;autres topologies, en raison de l&#8217;impact n\u00e9gatif sur le co\u00fbt et les performances que cela entra\u00eene.<\/p>\r\n<p style=\"text-align: justify;\">L&#8217;ampleur de cet impact est souvent acceptable, mais il convient de consid\u00e9rer qu&#8217;il augmente \u00e0 peu pr\u00e8s proportionnellement \u00e0 l&#8217;\u00e9largissement de la plage de tension.<\/p>\r\n<p style=\"text-align: justify;\">Par exemple, on nous demande souvent s&#8217;il est possible de supporter efficacement des rapports 1:3 sur la plage de tension D&#8217;ENTR\u00c9E (90-265 Vac classique) avec un convertisseur r\u00e9sonnant mono\u00e9tage et sans cavaliers.<br \/>La r\u00e9ponse est NON\u00a0: pour supporter une plage de tension d&#8217;entr\u00e9e similaire, un deuxi\u00e8me \u00e9tage est n\u00e9cessaire (Boost ou PFC, en effet souvent requis par les normes) ou un doubleur de tension capacitif doit \u00eatre impl\u00e9ment\u00e9 sur l&#8217;entr\u00e9e, ce qui n\u00e9cessite \u00e9galement un cavalier amovible pour passer de la plage 90-130\u00a0V \u00e0 190-265\u00a0V.<\/p>\r\n<p style=\"text-align: justify;\">Les applications avec une large plage de tension de SORTIE sont un peu moins critiques. Les rapports 1:3 sont r\u00e9alisables avec de bons r\u00e9sultats, comme le montre cet exemple\u00a0: <strong><span style=\"text-decoration: underline;\"><a href=\"https:\/\/www.itacoilweb.it\/files\/UM10722.pdf\" target=\"_blank\" rel=\"noopener\">r\u00e9servoir LLC avec 15&#8230;48\u00a0Vdc_sortie<\/a><\/span><\/strong> que nous avons con\u00e7u pour NXP en 2013.<\/p>\r\n<p>Cependant, dans les paragraphes suivants, nous vous montrons une meilleure solution.<\/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_single_image image=&#8221;17772&#8243;][vc_column_text]<\/p>\r\n<p style=\"text-align: justify;\"><span style=\"font-size: 12px;\"><em>Un doubleur de tension capacitif peut \u00eatre install\u00e9 sur l&#8217;entr\u00e9e afin de supporter la plage \u00e9tendue.<\/em><\/span><\/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][vc_column_text]<\/p>\r\n<p style=\"text-align: justify;\"><strong>Le compromis de la topologie LCC<\/strong><\/p>\r\n<p style=\"text-align: justify;\">Pour les applications avec une large plage de tension de sortie, telles que les alimentations pour les cha\u00eenes de LED de longueurs variables (\u00e9galement avec gradation profonde) ou les chargeurs de batterie haute performance, la topologie LCC est sans aucun doute la plus appropri\u00e9e.<\/p>\r\n<p style=\"text-align: justify;\">Ce n&#8217;est un secret pour personne que, si le d\u00e9veloppement d&#8217;un r\u00e9servoir LLC <span style=\"text-decoration: underline;\">bien optimis\u00e9<\/span> avec ses composants enroul\u00e9s est moins trivial que ce que les gens pensent g\u00e9n\u00e9ralement, la topologie LCC est beaucoup plus co\u00fbteuse et chronophage.<br \/>En raison du condensateur suppl\u00e9mentaire, le r\u00e9servoir passe du 3e au 4e\u00a0ordre n\u00e9cessitant, entre autres, une puissance de calcul beaucoup plus \u00e9lev\u00e9e pour effectuer des simulations et des calculs d&#8217;optimisation.<\/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;2\/3&#8243;][vc_column_text]<\/p>\r\n<p style=\"text-align: justify;\"><strong>Pas de souci\u00a0!<\/strong><\/p>\r\n<p style=\"text-align: justify;\">Maintenant, nous sommes pr\u00eats \u00e0 vous soutenir \u00e9galement si vous optez pour la topologie LCC.<\/p>\r\n<p style=\"text-align: justify;\">Nos toutes nouvelles comp\u00e9tences en conception et notre logiciel IAO propri\u00e9taire de plus en plus puissant rendront vos activit\u00e9s de conception incroyablement plus faciles, tout en offrant les plus hauts niveaux d&#8217;optimisation (\u00e9galement \u00e9conomique) et un temps de d\u00e9veloppement incroyablement rapide.<\/p>\r\n<p>Voir c\u2019est croire !<br \/>Consultez le <span style=\"text-decoration: underline;\"><strong><a href=\"https:\/\/www.itacoilweb.com\/files\/Test_comparativo_DB_ST_LCC_300W_LLL09V1A.pdf\" target=\"_blank\" rel=\"noopener\">rapport comparatif<\/a><\/strong><\/span> sur notre derni\u00e8re optimisation de la Carte de D\u00e9monstration LCC.<\/p>\r\n<p>&nbsp;<\/p>\r\n<p><em>Autres exemples\u00a0:<br \/><span style=\"text-decoration: underline;\"><strong><a href=\"https:\/\/www.itacoilweb.com\/fr\/portfolio\/demo-boards-dorigine\/\" rel=\"noopener\">Demo Boards Originales<\/a><br \/><\/strong><strong><a href=\"https:\/\/www.itacoilweb.com\/fr\/portfolio\/demo-boards-ameliorees\/\" rel=\"noopener\">Demo Boards Am\u00e9lior\u00e9es<\/a><\/strong><\/span><\/em><\/p>\r\n<p><em>D\u00e9couvrez nos <span style=\"text-decoration: underline;\"><strong><a href=\"https:\/\/www.itacoilweb.com\/fr\/services\/\" rel=\"noopener\">services<\/a><\/strong><\/span><\/em><\/p>\r\n<p>[\/vc_column_text][dfd_spacer screen_wide_spacer_size=&#8221;80&#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\/3&#8243;][dfd_single_image image=&#8221;17778&#8243;][vc_column_text]<span style=\"font-size: 12px;\"><em>Avec Itacoil, vous b\u00e9n\u00e9ficiez d&#8217;avantages \u00e9conomiques, d&#8217;efficacit\u00e9 et de performance. L&#8217;\u00e9chantillonnage est pr\u00eat en 7\u00a0jours ou moins\u00a0!<\/em><\/span>[\/vc_column_text][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\/articles\/que-sont-les-alimentations-a-resonnance-llc-lcc\/\">Que sont les alimentations \u00e0 r\u00e9sonnance LLC-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\/portfolio\/transformateurs-smps\/\" rel=\"noopener\">Transformateurs SMPS<\/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;50&#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_11&#8243; subtitle=&#8221;Quels sont les avantages et les inconv\u00e9nients ? Quand utiliser l&#8217;une ou l&#8217;autre ? Voyons cela.&#8221; delimiter_settings=&#8221;delimiter_style:solid|delimiter_width:80|delimiter_height:1&#8243; undefined=&#8221;&#8221; title_font_options=&#8221;tag:h2&#8243; subtitle_font_options=&#8221;tag:div&#8221;] Topologies r\u00e9sonnantes LLC et<\/p>\n","protected":false},"author":10,"featured_media":18474,"parent":18898,"menu_order":2,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-18497","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>Topologies r\u00e9sonnantes LLC et LCC - ITACOIL transformers<\/title>\n<meta name=\"description\" content=\"Avantages et inconv\u00e9nients des topologies LLC et LCC. Quand utiliser l&#039;une ou l&#039;autre\u00a0? 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