{"id":679435,"date":"2024-08-10T05:58:35","date_gmt":"2024-08-10T04:58:35","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=679435"},"modified":"2024-08-10T05:58:35","modified_gmt":"2024-08-10T04:58:35","slug":"cac-yeu-to-nhiet-can-xem-xet-khi-thiet-ke-mach-dien-tu","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/cac-yeu-to-nhiet-can-xem-xet-khi-thiet-ke-mach-dien-tu\/","title":{"rendered":"C\u00e1c y\u1ebfu t\u1ed1 nhi\u1ec7t c\u1ea7n xem x\u00e9t khi thi\u1ebft k\u1ebf m\u1ea1ch \u0111i\u1ec7n t\u1eed"},"content":{"rendered":"<p class=\"sidekick\">C\u00e1c y\u1ebfu t\u1ed1 nhi\u1ec7t c\u1ea7n xem x\u00e9t khi thi\u1ebft k\u1ebf m\u1ea1ch \u0111i\u1ec7n t\u1eed: \u1ea3nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t \u0111\u1ed9, t\u1ea3n nhi\u1ec7t, v\u1eadt li\u1ec7u v\u00e0 thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 b\u1ec1n.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/cac_yeu_to_nhiet_can_xem_xet_khi_thiet_ke_mach_dien_tu.png\" alt=\"C\u00e1c y\u1ebfu t\u1ed1 nhi\u1ec7t c\u1ea7n xem x\u00e9t khi thi\u1ebft k\u1ebf m\u1ea1ch \u0111i\u1ec7n t\u1eed\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>C\u00e1c Y\u1ebfu T\u1ed1 Nhi\u1ec7t C\u1ea7n Xem X\u00e9t Khi Thi\u1ebft K\u1ebf M\u1ea1ch \u0110i\u1ec7n T\u1eed<\/h2>\n<p>Trong l\u0129nh v\u1ef1c thi\u1ebft k\u1ebf m\u1ea1ch \u0111i\u1ec7n t\u1eed, vi\u1ec7c xem x\u00e9t c\u00e1c y\u1ebfu t\u1ed1 nhi\u1ec7t l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a h\u1ec7 th\u1ed1ng. Khi c\u00e1c linh ki\u1ec7n \u0111i\u1ec7n t\u1eed ho\u1ea1t \u0111\u1ed9ng, ch\u00fang t\u1ea1o ra nhi\u1ec7t. N\u1ebfu nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t, n\u00f3 c\u00f3 th\u1ec3 g\u00e2y h\u01b0 h\u1ecfng ho\u1eb7c l\u00e0m gi\u1ea3m hi\u1ec7u qu\u1ea3 c\u1ee7a m\u1ea1ch. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 nhi\u1ec7t c\u1ea7n xem x\u00e9t trong qu\u00e1 tr\u00ecnh thi\u1ebft k\u1ebf m\u1ea1ch \u0111i\u1ec7n t\u1eed.<\/p>\n<h2>Ngu\u1ed3n Nhi\u1ec7t Trong M\u1ea1ch \u0110i\u1ec7n T\u1eed<\/h2>\n<ul>\n<li><b>Linh ki\u1ec7n ph\u00e1t nhi\u1ec7t:<\/b> M\u1ed9t s\u1ed1 linh ki\u1ec7n nh\u01b0 transistor, vi x\u1eed l\u00fd, v\u00e0 \u0111\u00e8n LED c\u00f3 xu h\u01b0\u1edbng ph\u00e1t nhi\u1ec7t cao trong qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng. Thi\u1ebft k\u1ebf ph\u1ea3i \u0111\u1ea3m b\u1ea3o r\u1eb1ng nhi\u1ec7t \u0111\u1ed9 n\u00e0y \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd hi\u1ec7u qu\u1ea3.<\/li>\n<li><b>M\u1eadt \u0111\u1ed9 c\u00f4ng su\u1ea5t:<\/b> M\u1eadt \u0111\u1ed9 c\u00f4ng su\u1ea5t cao d\u1eabn \u0111\u1ebfn sinh nhi\u1ec7t. Ph\u00e2n ph\u1ed1i c\u00e1c linh ki\u1ec7n ph\u00e1t nhi\u1ec7t m\u1ed9t c\u00e1ch h\u1ee3p l\u00fd \u0111\u1ec3 tr\u00e1nh t\u00edch t\u1ee5 nhi\u1ec7t c\u1ee5c b\u1ed9.<\/li>\n<\/ul>\n<h2>C\u00e1ch Qu\u1ea3n L\u00fd Nhi\u1ec7t \u0110\u1ed9<\/h2>\n<ol>\n<li><b>K\u1ebft c\u1ea5u h\u1ec7 th\u1ed1ng:<\/b> S\u1eed d\u1ee5ng c\u00e1c v\u1eadt li\u1ec7u c\u00f3 kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t t\u1ed1t nh\u01b0 kim lo\u1ea1i (nh\u00f4m, \u0111\u1ed3ng) \u0111\u1ec3 x\u00e2y d\u1ef1ng khung m\u1ea1ch.<\/li>\n<li><b>T\u1ea3n nhi\u1ec7t:<\/b> S\u1eed d\u1ee5ng t\u1ea3n nhi\u1ec7t d\u1ea1ng c\u00e1nh t\u1ea3n, qu\u1ea1t l\u00e0m m\u00e1t ho\u1eb7c h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t ch\u1ea5t l\u1ecfng \u0111\u1ec3 gi\u1ea3m nhi\u1ec7t \u0111\u1ed9 c\u1ee7a c\u00e1c linh ki\u1ec7n ph\u00e1t nhi\u1ec7t.<\/li>\n<li><b>M\u1ea1ch d\u1eabn nhi\u1ec7t:<\/b> Thi\u1ebft k\u1ebf m\u1ea1ch PCB (B\u1ea3ng m\u1ea1ch in) v\u1edbi c\u00e1c \u0111\u01b0\u1eddng d\u1eabn n\u1ed1i b\u1eb1ng \u0111\u1ed3ng l\u1edbn \u0111\u1ec3 d\u1ec5 d\u00e0ng truy\u1ec1n nhi\u1ec7t ra ngo\u00e0i.<\/li>\n<li><b>B\u1ed1 tr\u00ed linh ki\u1ec7n:<\/b> \u0110\u1eb7t c\u00e1c linh ki\u1ec7n ph\u00e1t nhi\u1ec7t \u1edf n\u01a1i tho\u00e1ng v\u00e0 tr\u00e1nh \u0111\u1eb7t g\u1ea7n nhau \u0111\u1ec3 tr\u00e1nh t\u00edch t\u1ee5 nhi\u1ec7t.<\/li>\n<\/ol>\n<h2>T\u00ednh To\u00e1n Li\u00ean Quan \u0110\u1ebfn Nhi\u1ec7t \u0110\u1ed9<\/h2>\n<p>M\u1ed9t trong nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p t\u00ednh to\u00e1n quan tr\u1ecdng l\u00e0 \u01b0\u1edbc t\u00ednh s\u1ee9c c\u1ea3n nhi\u1ec7t (thermal resistance) \\(\\theta\\) c\u1ee7a c\u00e1c linh ki\u1ec7n v\u00e0 h\u1ec7 th\u1ed1ng t\u1ea3n nhi\u1ec7t.<\/p>\n<p>Vi\u1ec7c t\u00ednh to\u00e1n \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n th\u00f4ng qua c\u00f4ng th\u1ee9c:<\/p>\n<p>\\[<br \/>\n\\theta = \\frac{T_{j} &#8211; T_{a}}{P}<br \/>\n\\]\n<p>Trong \u0111\u00f3:<\/p>\n<ul>\n<li><b>T<sub>j<\/sub>:<\/b> Nhi\u1ec7t \u0111\u1ed9 m\u1ed1i n\u1ed1i (Junction temperature) c\u1ee7a linh ki\u1ec7n<\/li>\n<li><b>T<sub>a<\/sub>:<\/b> Nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng xung quanh (Ambient temperature)<\/li>\n<li><b>P:<\/b> C\u00f4ng su\u1ea5t ph\u00e1t nhi\u1ec7t c\u1ee7a linh ki\u1ec7n<\/li>\n<\/ul>\n<h2>T\u00e1c \u0110\u1ed9ng C\u1ee7a Nhi\u1ec7t \u0110\u1ed9 \u0110\u1ebfn Hi\u1ec7u Su\u1ea5t v\u00e0 \u0110\u1ed9 Tin C\u1eady<\/h2>\n<p>Nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a linh ki\u1ec7n \u0111i\u1ec7n t\u1eed c\u00f3 \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a h\u1ec7 th\u1ed1ng:<\/p>\n<ul>\n<li><b>Hi\u1ec7u su\u1ea5t:<\/b> Linh ki\u1ec7n ho\u1ea1t \u0111\u1ed9ng \u1edf nhi\u1ec7t \u0111\u1ed9 cao th\u01b0\u1eddng c\u00f3 hi\u1ec7u su\u1ea5t gi\u1ea3m do s\u1ef1 gia t\u0103ng \u0111i\u1ec7n tr\u1edf v\u00e0 c\u00e1c hi\u1ec7u \u1ee9ng \u0111i\u1ec7n kh\u00e1c.<\/li>\n<li><b>\u0110\u1ed9 tin c\u1eady:<\/b> Nhi\u1ec7t \u0111\u1ed9 cao l\u00e0m t\u0103ng t\u1ed1c \u0111\u1ed9 l\u00e3o h\u00f3a c\u1ee7a c\u00e1c linh ki\u1ec7n, g\u00e2y ra h\u01b0 h\u1ecfng s\u1edbm v\u00e0 gi\u1ea3m tu\u1ed5i th\u1ecd c\u1ee7a m\u1ea1ch \u0111i\u1ec7n.<\/li>\n<\/ul>\n<p>Do \u0111\u00f3, vi\u1ec7c xem x\u00e9t v\u00e0 qu\u1ea3n l\u00fd nhi\u1ec7t l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t trong qu\u00e1 tr\u00ecnh thi\u1ebft k\u1ebf c\u00e1c m\u1ea1ch \u0111i\u1ec7n t\u1eed, \u0111\u1ea3m b\u1ea3o r\u1eb1ng h\u1ec7 th\u1ed1ng ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh v\u00e0 b\u1ec1n b\u1ec9 trong th\u1eddi gian d\u00e0i.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>C\u00e1c y\u1ebfu t\u1ed1 nhi\u1ec7t c\u1ea7n xem x\u00e9t khi thi\u1ebft k\u1ebf m\u1ea1ch \u0111i\u1ec7n t\u1eed: \u1ea3nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t \u0111\u1ed9, t\u1ea3n nhi\u1ec7t, v\u1eadt li\u1ec7u v\u00e0 thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 b\u1ec1n.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[132],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>C\u00e1c y\u1ebfu t\u1ed1 nhi\u1ec7t c\u1ea7n xem x\u00e9t khi thi\u1ebft k\u1ebf m\u1ea1ch \u0111i\u1ec7n t\u1eed<\/title>\n<meta name=\"description\" content=\"C\u00e1c y\u1ebfu t\u1ed1 nhi\u1ec7t c\u1ea7n xem x\u00e9t khi thi\u1ebft k\u1ebf m\u1ea1ch \u0111i\u1ec7n t\u1eed: \u1ea3nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t \u0111\u1ed9, t\u1ea3n nhi\u1ec7t, v\u1eadt li\u1ec7u v\u00e0 thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 b\u1ec1n.\" \/>\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.thermal-engineering.org\/vi\/cac-yeu-to-nhiet-can-xem-xet-khi-thiet-ke-mach-dien-tu\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"C\u00e1c y\u1ebfu t\u1ed1 nhi\u1ec7t c\u1ea7n xem x\u00e9t khi thi\u1ebft k\u1ebf m\u1ea1ch \u0111i\u1ec7n t\u1eed\" \/>\n<meta property=\"og:description\" content=\"C\u00e1c y\u1ebfu t\u1ed1 nhi\u1ec7t c\u1ea7n xem x\u00e9t khi thi\u1ebft k\u1ebf m\u1ea1ch \u0111i\u1ec7n t\u1eed: \u1ea3nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t \u0111\u1ed9, t\u1ea3n nhi\u1ec7t, v\u1eadt li\u1ec7u v\u00e0 thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 b\u1ec1n.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.thermal-engineering.org\/vi\/cac-yeu-to-nhiet-can-xem-xet-khi-thiet-ke-mach-dien-tu\/\" \/>\n<meta property=\"og:site_name\" content=\"Thermal Engineering\" \/>\n<meta property=\"article:published_time\" content=\"2024-08-10T04:58:35+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/cac_yeu_to_nhiet_can_xem_xet_khi_thiet_ke_mach_dien_tu.png\" \/>\n<meta name=\"twitter:card\" content=\"summary\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\">\n\t<meta name=\"twitter:data1\" content=\"Nick Connor\">\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\">\n\t<meta name=\"twitter:data2\" content=\"3 minutes\">\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#website\",\"url\":\"https:\/\/www.thermal-engineering.org\/fr\/\",\"name\":\"Thermal Engineering\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":\"https:\/\/www.thermal-engineering.org\/fr\/?s={search_term_string}\",\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"vi-VN\"},{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/www.thermal-engineering.org\/vi\/cac-yeu-to-nhiet-can-xem-xet-khi-thiet-ke-mach-dien-tu\/#primaryimage\",\"inLanguage\":\"vi-VN\",\"url\":\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/cac_yeu_to_nhiet_can_xem_xet_khi_thiet_ke_mach_dien_tu.png\",\"width\":1000,\"height\":1000,\"caption\":\"C\\u00e1c y\\u1ebfu t\\u1ed1 nhi\\u1ec7t c\\u1ea7n xem x\\u00e9t khi thi\\u1ebft k\\u1ebf m\\u1ea1ch \\u0111i\\u1ec7n t\\u1eed\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.thermal-engineering.org\/vi\/cac-yeu-to-nhiet-can-xem-xet-khi-thiet-ke-mach-dien-tu\/#webpage\",\"url\":\"https:\/\/www.thermal-engineering.org\/vi\/cac-yeu-to-nhiet-can-xem-xet-khi-thiet-ke-mach-dien-tu\/\",\"name\":\"C\\u00e1c y\\u1ebfu t\\u1ed1 nhi\\u1ec7t c\\u1ea7n xem x\\u00e9t khi thi\\u1ebft k\\u1ebf m\\u1ea1ch \\u0111i\\u1ec7n t\\u1eed\",\"isPartOf\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/vi\/cac-yeu-to-nhiet-can-xem-xet-khi-thiet-ke-mach-dien-tu\/#primaryimage\"},\"datePublished\":\"2024-08-10T04:58:35+00:00\",\"dateModified\":\"2024-08-10T04:58:35+00:00\",\"author\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#\/schema\/person\/e8c544db9afedaec8574d6464f9398bb\"},\"description\":\"C\\u00e1c y\\u1ebfu t\\u1ed1 nhi\\u1ec7t c\\u1ea7n xem x\\u00e9t khi thi\\u1ebft k\\u1ebf m\\u1ea1ch \\u0111i\\u1ec7n t\\u1eed: \\u1ea3nh h\\u01b0\\u1edfng c\\u1ee7a nhi\\u1ec7t \\u0111\\u1ed9, t\\u1ea3n nhi\\u1ec7t, v\\u1eadt li\\u1ec7u v\\u00e0 thi\\u1ebft k\\u1ebf \\u0111\\u1ec3 \\u0111\\u1ea3m b\\u1ea3o hi\\u1ec7u su\\u1ea5t v\\u00e0 \\u0111\\u1ed9 b\\u1ec1n.\",\"inLanguage\":\"vi-VN\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.thermal-engineering.org\/vi\/cac-yeu-to-nhiet-can-xem-xet-khi-thiet-ke-mach-dien-tu\/\"]}]},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#\/schema\/person\/e8c544db9afedaec8574d6464f9398bb\",\"name\":\"Nick Connor\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#personlogo\",\"inLanguage\":\"vi-VN\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/84c0dec310b44b65da29dc9df6925239?s=96&d=mm&r=g\",\"caption\":\"Nick Connor\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","_links":{"self":[{"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/posts\/679435"}],"collection":[{"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/comments?post=679435"}],"version-history":[{"count":0,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/posts\/679435\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/media?parent=679435"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/categories?post=679435"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/tags?post=679435"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}