{"id":13876,"date":"2023-08-21T02:58:23","date_gmt":"2023-08-21T02:58:23","guid":{"rendered":"https:\/\/www.rayzeek.com\/?p=13876"},"modified":"2023-12-26T08:41:14","modified_gmt":"2023-12-26T08:41:14","slug":"what-is-switched-mode-power-supply-smps","status":"publish","type":"post","link":"https:\/\/www.rayzeek.com\/fr\/glossaire\/quest-ce-quune-alimentation-a-decoupage-smps","title":{"rendered":"Qu'est-ce qu'une alimentation \u00e0 d\u00e9coupage (SMPS) ?"},"content":{"rendered":"<h2 class=\"wp-block-heading\" id=\"h-what-is-switched-mode-power-supply-smps\">Qu'est-ce qu'une alimentation \u00e0 d\u00e9coupage (SMPS) ?<\/h2><p>Un SMPS (Switched-Mode Power Supply) est un type d'alimentation \u00e9lectrique couramment utilis\u00e9 dans l'industrie de l'\u00e9clairage. Elle est con\u00e7ue pour convertir efficacement l'\u00e9nergie \u00e9lectrique d'une forme \u00e0 une autre \u00e0 l'aide de dispositifs de commutation tels que des transistors ou des MOSFET. Contrairement aux alimentations lin\u00e9aires traditionnelles, un SMPS fonctionne \u00e0 des fr\u00e9quences \u00e9lev\u00e9es, ce qui permet d'am\u00e9liorer l'efficacit\u00e9 de la conversion de l'\u00e9nergie et de r\u00e9duire la taille et le poids de l'alimentation.<\/p><p>Le fonctionnement d'un SMPS comporte plusieurs \u00e9tapes :<\/p><div class=\"insert_portfolio_outer_wrapper\"><h3>Inspirez-vous des portefeuilles de d\u00e9tecteurs de mouvement Rayzeek.<\/h3><p>Vous ne trouvez pas ce que vous voulez ? Ne vous inqui\u00e9tez pas. Il existe toujours d'autres moyens de r\u00e9soudre vos probl\u00e8mes. L'un de nos portefeuilles peut peut-\u00eatre vous aider.<\/p><div class = \"insert_portfolio_buttons\"><div class = \"insert_portfolio_button_wrapper\"><div><a href = \"https:\/\/www.rayzeek.com\/fr\/categorie-de-produit\/capteurs-de-mouvement\"><p>D\u00e9tecteurs de mouvement PIR<\/p><\/a><\/div><\/div><div class = \"insert_portfolio_button_wrapper\"><div><a href=\"https:\/\/www.rayzeek.com\/fr\/interrupteurs-a-detecteur-de-mouvement\"><p>Interrupteurs \u00e0 d\u00e9tecteur de mouvement<\/p><\/a><\/div><\/div><div class = \"insert_portfolio_button_wrapper\"><div><a href=\"https:\/\/www.rayzeek.com\/fr\/capteurs-doccupation-et-dinoccupation\"><p>Capteurs d\u2019occupation<\/p><\/a><\/div><\/div><div class = \"insert_portfolio_button_wrapper\"><div><a href=\"https:\/\/www.rayzeek.com\/fr\/produits\/rz050\"><p>D\u00e9tecteur de mouvement pour climatiseur<\/p><\/a><\/div><\/div><div class = \"insert_portfolio_button_wrapper\"><div><a href=\"https:\/\/www.rayzeek.com\/fr\/categorie-de-produit\/motion-sensor-light-strip\"><p>Rubans lumineux \u00e0 d\u00e9tecteur de mouvement<\/p><\/a><\/div><\/div><div class = \"insert_portfolio_button_wrapper\"><div><a href=\"https:\/\/www.rayzeek.com\/fr\/categorie-de-produit\/dc-sensor-dimmer\"><p>D\u00e9tecteurs de mouvement\/d\u00e9tecteurs d'intensit\u00e9 \u00e0 basse tension \u00e0 courant continu<\/p><\/a><\/div><\/div><div class = \"insert_portfolio_button_wrapper\"><div><a href=\"https:\/\/www.rayzeek.com\/fr\/categorie-de-produit\/capteurs-de-mouvement-sans-fil\"><p>Kits de d\u00e9tecteurs de mouvement sans fil<\/p><\/a><\/div><\/div><\/div><\/div><ul class=\"wp-block-list\"><li>Dans un premier temps, le courant alternatif entrant est redress\u00e9 et filtr\u00e9 pour produire un signal continu. Cette op\u00e9ration est r\u00e9alis\u00e9e \u00e0 l'aide d'un redresseur et de composants de filtrage, convertissant l'\u00e9nergie alternative en une forme de courant continu utilisable. <\/li>\n\n<li>Le deuxi\u00e8me \u00e9tage d'un SMPS implique une commutation \u00e0 haute fr\u00e9quence, o\u00f9 un commutateur \u00e0 haute fr\u00e9quence traite le signal continu, cr\u00e9ant un signal continu puls\u00e9 \u00e0 haute fr\u00e9quence. Ce fonctionnement \u00e0 haute fr\u00e9quence permet une conversion efficace de l'\u00e9nergie et contribue \u00e0 la taille et au poids compacts de l'alimentation.<\/li>\n\n<li>Le troisi\u00e8me \u00e9tage d'un SMPS comprend un transformateur de puissance. Le signal continu haute tension est abaiss\u00e9 \u00e0 un signal continu de niveau appropri\u00e9. Le transformateur joue un r\u00f4le crucial dans la conversion et l'isolation de la tension, en veillant \u00e0 ce que la tension de sortie corresponde au niveau souhait\u00e9.<\/li>\n\n<li>Dans le quatri\u00e8me \u00e9tage, le signal continu abaiss\u00e9 est redress\u00e9 et filtr\u00e9 pour obtenir une sortie continue r\u00e9guli\u00e8re et constante. Cet \u00e9tage est essentiel pour maintenir une tension de sortie stable, exempte de fluctuations ou de bruit.<\/li>\n\n<li>L'\u00e9tape finale d'un SMPS est le circuit de contr\u00f4le. Ce circuit surveille la tension de sortie et ajuste le commutateur haute fr\u00e9quence de mani\u00e8re dynamique afin de maintenir un flux de sortie continu de la tension souhait\u00e9e. Le circuit de commande est charg\u00e9 de r\u00e9guler la tension de sortie et de la maintenir dans la plage sp\u00e9cifi\u00e9e.<\/li><\/ul><div class=\"wp-block-group glossary_faqs\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h2 class=\"wp-block-heading\" id=\"h-frequently-asked-questions\">Questions fr\u00e9quemment pos\u00e9es<\/h2>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-what-does-the-smps-do\">Que fait le SMPS ?<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>Comme les autres types d'alimentation, une alimentation SMPS transf\u00e8re le courant d'une prise de courant alternatif \u00e0 un appareil \u00e0 courant continu. Cependant, ce qui distingue le SMPS est sa capacit\u00e9 \u00e0 r\u00e9guler la tension de sortie. Il est capable d'ajuster la tension de sortie pour assurer une sortie constante, quelles que soient les fluctuations de la charge.<\/p><\/div><\/div><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-what-does-smps-mean-in-electrical\">Que signifie SMPS dans le domaine de l'\u00e9lectricit\u00e9 ?<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>Les alimentations \u00e0 d\u00e9coupage (SMPS), \u00e9galement connues sous le nom d'alimentations \u00e0 d\u00e9coupage, sont largement utilis\u00e9es dans les syst\u00e8mes \u00e9lectriques pour une conversion efficace de l'\u00e9nergie. Elles prennent une entr\u00e9e CA de la tension secteur et la convertissent en une sortie CC basse tension.<\/p><\/div><\/div><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-what-are-the-two-types-of-smps\">Quels sont les deux types de SMPS ?<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>Les SMPS peuvent \u00eatre class\u00e9s en deux cat\u00e9gories, \u00e0 savoir les convertisseurs non isol\u00e9s et les convertisseurs isol\u00e9s, en fonction de la topologie de leur circuit.<\/p><\/div><\/div><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-is-smps-a-ac-dc-converter\">Le SMPS est-il un convertisseur AC DC ?<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>En g\u00e9n\u00e9ral, un SMPS fonctionne en convertissant la tension de source alternative en tension continue par le biais d'un redresseur et d'un filtre d'entr\u00e9e. Ensuite, un hacheur est utilis\u00e9 pour \"hacher\" la tension continue, ce qui produit une s\u00e9rie d'impulsions rectangulaires \u00e0 haute fr\u00e9quence (de 20 kHz \u00e0 10 MHz) \u00e0 l'entr\u00e9e de l'enroulement primaire du transformateur.<\/p><\/div><\/div><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-is-smps-necessary\">Le SMPS est-il n\u00e9cessaire ?<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>L'objectif principal d'une alimentation \u00e0 d\u00e9coupage (SMPS) est de convertir une tension alternative ou continue non r\u00e9gul\u00e9e en une tension continue r\u00e9gul\u00e9e adapt\u00e9e aux appareils \u00e9lectroniques tels que les ordinateurs. Cette conversion est n\u00e9cessaire car les ordinateurs et autres appareils \u00e9lectroniques ont besoin d'une alimentation stable et efficace.<\/p><\/div><\/div><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-why-does-smps-damage\">Pourquoi le SMPS est-il endommag\u00e9 ?<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>La salet\u00e9 et les substances \u00e9trang\u00e8res, telles que la fum\u00e9e de cigarette et la poussi\u00e8re domestique, peuvent endommager un SMPS. En outre, la surchauffe et les probl\u00e8mes de ventilation sont des causes courantes de d\u00e9faillance des SMPS. Pour \u00e9viter cela, il est important de veiller \u00e0 ce que la ventilation soit exempte de poussi\u00e8re et d'encombrement. Il est \u00e9galement conseill\u00e9 d'\u00e9viter de placer l'unit\u00e9 centrale dans un bureau ferm\u00e9.<\/p><\/div><\/div><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-how-do-i-check-my-smps-power-supply\">Comment puis-je v\u00e9rifier mon alimentation SMPS ?<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>Si la mesure de la tension peut se faire facilement \u00e0 l'aide d'un transformateur d'isolement, une m\u00e9thode plus efficace consiste \u00e0 utiliser une sonde diff\u00e9rentielle pour les mesures de haute tension. Les sondes diff\u00e9rentielles sont \u00e9quip\u00e9es de deux entr\u00e9es et sont sp\u00e9cifiquement con\u00e7ues pour mesurer la diff\u00e9rence de tension entre ces entr\u00e9es.<\/p><\/div><\/div><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-how-is-smps-different-from-normal-power-supply\">En quoi le SMPS est-il diff\u00e9rent d'une alimentation normale ?<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>Un SMPS se distingue d'une alimentation lin\u00e9aire par sa m\u00e9thode de conversion de la tension alternative primaire en tension continue de sortie. Au lieu de s'appuyer sur une approche lin\u00e9aire, le SMPS utilise un transistor de puissance pour g\u00e9n\u00e9rer une tension \u00e0 haute fr\u00e9quence qui passe ensuite dans un transformateur compact et est filtr\u00e9e pour \u00e9liminer tout bruit alternatif.<\/p><\/div><\/div><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-which-device-is-used-in-smps\">Quel est le dispositif utilis\u00e9 dans les SMPS ?<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>Dans les SMPS, l'onduleur utilise la technique PWM. La sortie de l'onduleur est ensuite convertie en courant continu \u00e0 l'aide d'un redresseur \u00e0 diode. Comme l'onduleur fonctionne \u00e0 une fr\u00e9quence \u00e9lev\u00e9e, les ondulations de la tension de sortie en courant continu peuvent \u00eatre facilement filtr\u00e9es \u00e0 l'aide de petits composants de filtrage.<\/p><\/div><\/div><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-which-switch-is-used-in-smps\">Quel interrupteur est utilis\u00e9 dans les SMPS ?<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>Comme les autres alimentations, un SMPS transf\u00e8re l'\u00e9nergie d'une source de courant continu ou alternatif (souvent l'alimentation secteur) vers des charges de courant continu, telles qu'un ordinateur personnel, tout en convertissant les caract\u00e9ristiques de la tension et du courant. Il utilise un convertisseur de commutation \u00e0 haute fr\u00e9quence qui convertit le courant continu en courant continu.<\/p><\/div><\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Un SMPS (Switched-Mode Power Supply) est un type d'alimentation \u00e9lectrique couramment utilis\u00e9 dans l'industrie de l'\u00e9clairage. Il est con\u00e7u pour convertir efficacement l'\u00e9nergie \u00e9lectrique d'une forme \u00e0 une autre \u00e0 l'aide de dispositifs de commutation tels que des transistors ou des MOSFET.<\/p>","protected":false},"author":4,"featured_media":12860,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"article_term":"","article_term_alternate":"","article_term_def":"","article_hook":"","auto_links":"[{\"keyword\": \"power supply\", \"idxall\": 1, \"keywordtitlesimi\": 0.8463436961174011, \"keywordslugsimi\": 0.8463436961174011, \"paratitlesimi\": 0.6850572824478149, \"paraslugsimi\": 0.6850572824478149, \"slug\": \"what-is-power-supply\", \"title\": \"What is Power Supply\", \"id\": 14202}, {\"keyword\": \"lighting industry\", \"idxall\": 0, \"keywordtitlesimi\": 0.7885549306869507, \"keywordslugsimi\": 0.7885549306869507, \"paratitlesimi\": 0.5916579633951188, \"paraslugsimi\": 0.5916579633951188, \"slug\": \"tips-for-increasing-the-efficiency-of-commercial-lighting\", \"title\": \"Tips for Increasing the Efficiency of Commercial Lighting\", \"id\": 10327}]","article_topic":"","article_fact_check":"","mt_social_share":"","mt_content_meta":"","mt_glossary_display":"","glossary_heading":"","glossary":"Switched-Mode Power Supply (SMPS)","glossary_alter":"","glossary_def":"","article_task":"","footnotes":""},"categories":[102],"tags":[99],"class_list":["post-13876","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glossary","tag-glossary"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is Switched-Mode Power Supply (SMPS) - Rayzeek<\/title>\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.rayzeek.com\/fr\/glossaire\/quest-ce-quune-alimentation-a-decoupage-smps\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is Switched-Mode Power Supply (SMPS) - Rayzeek\" \/>\n<meta property=\"og:description\" content=\"An SMPS, which stands for Switched-Mode Power Supply, is a type of power supply commonly used in the lighting industry. 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