{"id":40623,"date":"2023-09-30T13:45:00","date_gmt":"2023-09-30T18:45:00","guid":{"rendered":"https:\/\/flex.com\/resources\/peak-power-ratings-of-our-dc-dc-converters"},"modified":"2026-03-18T14:54:44","modified_gmt":"2026-03-18T19:54:44","slug":"peak-power-ratings-of-our-dc-dc-converters","status":"publish","type":"resource","link":"https:\/\/flex.com\/de\/resources\/peak-power-ratings-of-our-dc-dc-converters","title":{"rendered":"Spitzenleistungswerte unserer DC\/DC-Wandler"},"content":{"rendered":"<div id=\"overscroll-top\" style=\"background-color: #eaeef4;\"><\/div>\n<div class=\"resource-header block\">\n\t<div class=\"container\">\n\t\t<div class=\"breadcrumb\">\n\t\t\t<a title=\"Homepage\" href=\"\/\">Flex<\/a>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 384 512\"><path d=\"M365.3 256l-22.6 22.6-192 192L128 493.3 82.7 448l22.6-22.6L274.7 256 105.4 86.6 82.7 64 128 18.7l22.6 22.6 192 192L365.3 256z\"\/><\/svg>\n\t\t\t<a title=\"Resources\" href=\"\/resources\">Resources<\/a>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 384 512\"><path d=\"M365.3 256l-22.6 22.6-192 192L128 493.3 82.7 448l22.6-22.6L274.7 256 105.4 86.6 82.7 64 128 18.7l22.6 22.6 192 192L365.3 256z\"\/><\/svg>\n\t\t\t<a title=\"Peak power ratings of our DC\/DC converters\">Peak power ratings of our DC\/DC converters<\/a>\n\t\t<\/div>\n\t\t<h1>Peak power ratings of our DC\/DC converters<\/h1>\n\t\t\t\t<div class=\"separator\"><\/div>\n\t\t<div class=\"details\">\n\t\t\t\t\t\t\t\t\t<div class=\"date detail\">\n\t\t\t\tPosted on<br>\n\t\t\t\tSeptember 30, 2023\t\t\t<\/div>\n\t\t\t\t\t\t<div class=\"categories\">\n\t\t\t\t<div class=\"categories-wrapper\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"cat-tag\">Blog<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"cat-tag\" data-cat-level=\"3\" data-destination=\"https:\/\/flex.com\/industries\/data-center?subcategories=data-center-power#resources\" href=\"https:\/\/flex.com\/industries\/data-center?subcategories=data-center-power#resources\">Data Center Power<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"cat-tag\" data-cat-level=\"3\" data-destination=\"\/industries\/industrial?subcategories=power#resources\" href=\"\/industries\/industrial?subcategories=power#resources\">Power<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"cat-tag\" data-cat-level=\"2\" data-destination=\"\/power-modules#resources\" href=\"\/power-modules#resources\">Power Modules<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t<\/div>\n<\/div>\n\n\n\n<div class=\"sidebar block normal-sidebar\">\n\t<div class=\"container\">\n\t\t<div class=\"content\">\n\t\t\t\n\n<p>There\u2019s an old engineering rule about how tight to make a screw fixing \u2014 wind it up until the thread just strips, then back off a quarter turn. Joking apart, every engineer in mechanical or electrical design works with a margin between what they know is an acceptable working stress and what will cause something to break. When that stress is the loading of a DC\/DC converter, the time duration also plays a part \u2014 microseconds overload is surely OK but when it lasts longer \u2014 milliseconds, seconds, at what point does damage occur?<\/p>\n\n\n\n<p>Some designs of DC\/DCs can accurately measure and limit output current to a value that is safe under all conditions. but they are not allowing the potential advantage of delivering the short peak loads that modern processors and complex ICs often demand.<\/p>\n\n\n<div id=\"id-69d8f38e44f18\" class=\"columns block\">\n\t<style>\n\t\t#id-69d8f38e44f18 .column, #id-69d8f38e44f18 .wp-block-acf-column {\n\t\t\tpadding: 0 18px;\n\t\t}\n\t\t\n\t\t#id-69d8f38e44f18 > .container.show-rules .column+.column, #id-69d8f38e44f18 > .container.show-rules .wp-block-acf-column+.wp-block-acf-column {\n\t\t\tborder-color: rgba(38, 38, 38, 0.2);\n\t\t}\n\t\t\n\t\t#id-69d8f38e44f18 .column, #id-69d8f38e44f18 .wp-block-acf-column {\n\t\t\t.code.block {\n\t\t\t\t.container {\n\t\t\t\t\t.tagembed-widget {\n\t\t\t\t\t\tmax-width: 600px;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t\t\n\t\t@media (max-width: 1320px) {\n\t\t\t#id-69d8f38e44f18 > .container {\n\t\t\t\tdisplay: block;\n\t\t\t\tmax-width: 600px;\n\t\t\t}\n\t\t}\n\t\t@media (max-width: 1320px) {\n\t\t\t#id-69d8f38e44f18 > .container > .column, #id-69d8f38e44f18 > .container > .wp-block-acf-column {\n\t\t\t\tpadding: 36px 0 0 0 !important;\n\t\t\t}\n\t\t}\n\t\t@media (max-width: 1320px) {\n\t\t\t#id-69d8f38e44f18 > .container > .column:first-child, #id-69d8f38e44f18 > .container > .wp-block-acf-column:first-child {\n\t\t\t\tpadding: 0 !important;\n\t\t\t}\n\t\t}\n\t\t@media (max-width: 1320px) {\n\t\t\t#id-69d8f38e44f18 > .container.show-rules .column+.column, #id-69d8f38e44f18 > .container.show-rules .wp-block-acf-column+.wp-block-acf-column {\n\t\t\t\tborder-left: none;\n\t\t\t\tborder-top: 1px solid rgba(38, 38, 38, 0.2);\n\t\t\t\tpadding: 30px 0 0 0 !important;\n\t\t\t\tmargin-top: 30px;\n\t\t\t}\n\t\t}\n\t<\/style>\n\t<div class=\"container align-top\">\n\t\t\n<div class=\"column block\">\n\t\n<div id=\"id_69d8f38e403a2\" class=\"media block\">\n\t<div class=\"container media-center \">\n\t\t<div class=\"media\" style=\"left: 0px; min-width: 100%; max-width: 100%;\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\n\t<script>\n\t(function () {\n\t\tlet hasRun_id_69d8f38e403a2 = false;\n\t\tfunction updateVideoDisplay_id_69d8f38e403a2() {\n\t\t\tconst youtubeVideoId = \"\";\n\t\t\tconst bynderID = \"\";\n\t\t\tconst mediaType = \"image\";\n\t\t\tconst mediaVideoElement = document.getElementById('media-video-id_69d8f38e403a2');\n\t\t\tconst bodyClass = document.body.className || '';\n\t\t\tconst match = bodyClass.match(\/translatepress-([a-z]{2})(?:_[A-Z]{2})?\/i);\n\t\t\tconst currentLanguage = match ? 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We appreciate your patience and look forward to sharing it with you soon.<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t`;\n\t\t\t\tmediaVideoElement.appendChild(errorDiv);\n\t\t\t}\n\t\t}\n\t\t\n\t\tfunction runVideoInjection() {\n\t\t\tif (hasRun_id_69d8f38e403a2) return;\n\t\t\thasRun_id_69d8f38e403a2 = true;\n\t\t\tupdateVideoDisplay_id_69d8f38e403a2();\n\t\t}\n\t\t\n\t\t\/\/ Always run on front-end\n\t\tif (document.readyState === 'loading') {\n\t\t\tdocument.addEventListener('DOMContentLoaded', runVideoInjection);\n\t\t} else {\n\t\t\trunVideoInjection();\n\t\t}\n\t\t\n\t\t\/\/ Also run in editor if available\n\t\tif (typeof wp !== 'undefined' && wp.domReady) {\n\t\t\twp.domReady(runVideoInjection);\n\t\t}\n\t})();\n\t<\/script>\n\t\n\t<script>\n\t\tdocument.addEventListener('DOMContentLoaded', function () {\n\t\t\t\n\t\t\t\/\/ Get the block element by ID\n\t\t\tvar blockElement = document.getElementById(\"id_69d8f38e403a2\");\n\t\t\tif (!blockElement) return;\n\t\n\t\t\t\/\/ Reveal the block\n\t\t\t(function ($) {\n\t\t\t\tScrollReveal().reveal(blockElement.querySelector(\".container .media\"), {origin: \"bottom\", distance: \"20px\", opacity: 1, duration: 1000});\n\t\t\t\tScrollReveal().reveal(blockElement.querySelector(\".container .content\"), {origin: \"bottom\", distance: \"20px\", opacity: 1, duration: 1000});\n\t\t\t}(jQuery));\n\t\t});\n\t<\/script>\n<\/div>\n\n<div id=\"id-69d8f38e43321\" class=\"box block content-width dark-content de \" style=\"background-color: transparent; background-image: none;\">\n\t<style>\n\t\t#id-69d8f38e43321 > .container > .content {\n\t\t\tbackground-color: transparent;\n\t\t\tposition: relative;\n\t\t\tpadding-top: 0px;\n\t\t\tpadding-right: 0px;\n\t\t\tpadding-bottom: 0px;\n\t\t\tpadding-left: 0px;\n\t\t\tmargin-left: 24px;\n\t\t\tmargin-right: 24px;\n\t\t}\n\t\t@media (max-width: 1272px) {\n\t\t\t#id-69d8f38e43321.box.block.full-width > .container > .content {\n\t\t\t\tpadding-left: 0 !important;\n\t\t\t\tpadding-right: 0 !important;\n\t\t\t\tmargin: 0 !important;\n\t\t\t}\n\t\t}\n\t\t@media (max-width: 960px) {\n\t\t\t#id-69d8f38e43321 > .container > .content {\n\t\t\t\t\/\/padding-top: 0px;\n\t\t\t\tpadding-right: 0px;\n\t\t\t\t\/\/padding-bottom: 0px;\n\t\t\t\tpadding-left: 0px;\n\t\t\t}\n\t\t}\n\t<\/style>\n\t<div class=\"container\">\n\t\t<div class=\"content\">\n\t\t\t\n\n<p class=\"has-text-align-center has-small-font-size\"><em>Figure 1: Load power ratings defined for our DC\/DC converters<\/em><br><\/p>\n\n\n\t\t<\/div>\n\t<\/div>\n<\/div>\n\n\n<\/div>\n\n<div class=\"column block\">\n\t\n\n<p>If they can be rated for a peak loading, then DC\/DCs can be physically sized for a lower continuous power, making them smaller and cheaper. We put names to the levels of loading for our DC\/DCs that have a peak power rating: \u2018Continuous\u2019, \u2018Peak Power\u2019 (PP) typically lasting less than one second, and \u2018Transient Peak Power\u2019 (TPP) for much less than 100ms (<strong>Figure 1<\/strong>).<\/p>\n\n\n<\/div>\n\n\t<\/div>\n<\/div>\n\n\t\t<\/div>\n\t\t<div class=\"sidebar normal-column\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t<\/div>\n<\/div>\n\n<div id=\"id-69d8f38e4c2d7\" class=\"box block full-width dark-content de \" style=\"background-color: transparent; background-image: none;\">\n\t<style>\n\t\t#id-69d8f38e4c2d7 > .container > .content {\n\t\t\tbackground-color: transparent;\n\t\t\tposition: relative;\n\t\t\tpadding-top: 36px;\n\t\t\tpadding-right: 0px;\n\t\t\tpadding-bottom: 84px;\n\t\t\tpadding-left: 0px;\n\t\t\tmargin-left: 0px;\n\t\t\tmargin-right: 0px;\n\t\t}\n\t\t@media (max-width: 1272px) {\n\t\t\t#id-69d8f38e4c2d7.box.block.full-width > .container > .content {\n\t\t\t\tpadding-left: 0 !important;\n\t\t\t\tpadding-right: 0 !important;\n\t\t\t\tmargin: 0 !important;\n\t\t\t}\n\t\t}\n\t\t@media (max-width: 960px) {\n\t\t\t#id-69d8f38e4c2d7 > .container > .content {\n\t\t\t\t\/\/padding-top: 18px;\n\t\t\t\tpadding-right: 0px;\n\t\t\t\t\/\/padding-bottom: 42px;\n\t\t\t\tpadding-left: 0px;\n\t\t\t}\n\t\t}\n\t<\/style>\n\t<div class=\"container\">\n\t\t<div class=\"content\">\n\t\t\t\n\n<h2 class=\"wp-block-heading has-medium-font-size\" style=\"font-style:normal;font-weight:600\">What limits peak power capability<\/h2>\n\n\n\n<p>There can be different limiting factors with peak power demand \u2014 if there are magnetic elements in the power path such as an output filter, then saturation can occur and although this doesn\u2019t harm the choke directly, it loses inductance and can cause a damaging peak current in diodes and switches. This is an almost instantaneous effect, so DC\/DCs with PWM that need a choke might have limited peak load ratings. An example would be the fully-regulated <a href=\"https:\/\/flexpowermodules.com\/products\/bmr350\" rel=\"nofollow noopener\" target=\"_blank\">BMR350<\/a> with an allowed peak power \u2018only\u2019 30% higher than the continuous rating. Other DC\/DCs that run at 100% duty cycle such as our <a href=\"https:\/\/flexpowermodules.com\/products\/bmr313\" rel=\"nofollow noopener\" target=\"_blank\">BMR313<\/a> have no output choke and do not suffer from the limitation, resulting in a peak rating of 3 kW, 3x its continuous rating of 1 kW.<\/p>\n\n\n\n<p>In the case of the BMR313, the limit is now semiconductor junction temperature rise and the challenge is to quantify the combinations of starting temperature, peak current and duration that are within a \u2018safe operating area\u2019.<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-medium-font-size\" style=\"font-style:normal;font-weight:600\">Quantifying the overload<\/h2>\n\n\n\n<p>If junction temperature is now the limit, a way has to be determined to measure it, so it will not exceed an \u2018absolute maximum\u2019. The semiconductor device manufacturer will typically set 150\u00b0C or 175\u00b0C as the limit \u2014 often simply because it is unqualified beyond that point and survival can\u2019t be guaranteed. You could guess that they have added their own safety margin but this can\u2019t be assumed. A direct measurement of temperature would be ideal, but a sensor can only get so close, so junction temperature has to be extrapolated. This means modelling the thermal resistances and capacitances around the junction and knowing what power is being dissipated. With limited \u2018peak power\u2019 events, the temperature changes along the heat path from junction to ambient are relatively slow and predictable. If an accurate thermal model is assembled, a thermal sensor coupled with power loss and time measurements can now generate a warning signal before a critical temperature level is reached and this can be used to signal to the load to \u2018throttle back\u2019, if it has the capability.<\/p>\n\n\n<div id=\"id-69d8f38e48437\" class=\"columns block\">\n\t<style>\n\t\t#id-69d8f38e48437 .column, #id-69d8f38e48437 .wp-block-acf-column {\n\t\t\tpadding: 0 18px;\n\t\t}\n\t\t\n\t\t#id-69d8f38e48437 > .container.show-rules .column+.column, #id-69d8f38e48437 > .container.show-rules .wp-block-acf-column+.wp-block-acf-column {\n\t\t\tborder-color: rgba(38, 38, 38, 0.2);\n\t\t}\n\t\t\n\t\t#id-69d8f38e48437 .column, #id-69d8f38e48437 .wp-block-acf-column {\n\t\t\t.code.block {\n\t\t\t\t.container {\n\t\t\t\t\t.tagembed-widget {\n\t\t\t\t\t\tmax-width: 600px;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t\t\n\t\t@media (max-width: 1320px) {\n\t\t\t#id-69d8f38e48437 > .container {\n\t\t\t\tdisplay: block;\n\t\t\t\tmax-width: 600px;\n\t\t\t}\n\t\t}\n\t\t@media (max-width: 1320px) {\n\t\t\t#id-69d8f38e48437 > .container > .column, #id-69d8f38e48437 > .container > .wp-block-acf-column {\n\t\t\t\tpadding: 36px 0 0 0 !important;\n\t\t\t}\n\t\t}\n\t\t@media (max-width: 1320px) {\n\t\t\t#id-69d8f38e48437 > .container > .column:first-child, #id-69d8f38e48437 > .container > .wp-block-acf-column:first-child {\n\t\t\t\tpadding: 0 !important;\n\t\t\t}\n\t\t}\n\t\t@media (max-width: 1320px) {\n\t\t\t#id-69d8f38e48437 > .container.show-rules .column+.column, #id-69d8f38e48437 > .container.show-rules .wp-block-acf-column+.wp-block-acf-column {\n\t\t\t\tborder-left: none;\n\t\t\t\tborder-top: 1px solid rgba(38, 38, 38, 0.2);\n\t\t\t\tpadding: 30px 0 0 0 !important;\n\t\t\t\tmargin-top: 30px;\n\t\t\t}\n\t\t}\n\t<\/style>\n\t<div class=\"container align-center\">\n\t\t\n<div class=\"column block\">\n\t\n\n<p>Otherwise, a second threshold is crossed, and the DC\/DC is instructed to shut down. However, with high level \u2018Transient Peak\u2019 overloads, rates of temperature rise are higher and are dominated by the local thermal capacity of the semiconductor die itself, with the effects more difficult to characterize. In this case, a prediction of junction temperature can be made by measuring starting temperature, transient load current and its duration. This is the technique used in the <a href=\"https:\/\/flexpowermodules.com\/products\/bmr313\" rel=\"nofollow noopener\" target=\"_blank\">BMR313<\/a> which includes multiple thresholds and warnings for timed over-current with a fast hardware shutdown for extreme levels, a slower timed shutdown for intermediate current levels and a temperature sensor to provide a warning signal and eventual shutdown (<strong>Figure 2<\/strong>).<\/p>\n\n\n<\/div>\n\n<div class=\"column block\">\n\t\n<div id=\"id_69d8f38e47a0a\" class=\"media block\">\n\t<div class=\"container media-center \">\n\t\t<div class=\"media\" style=\"left: 0px; min-width: 100%; max-width: 100%;\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\n\t<script>\n\t(function () {\n\t\tlet hasRun_id_69d8f38e47a0a = false;\n\t\tfunction updateVideoDisplay_id_69d8f38e47a0a() {\n\t\t\tconst youtubeVideoId = \"\";\n\t\t\tconst bynderID = \"\";\n\t\t\tconst mediaType = \"image\";\n\t\t\tconst mediaVideoElement = document.getElementById('media-video-id_69d8f38e47a0a');\n\t\t\tconst bodyClass = document.body.className || '';\n\t\t\tconst match = bodyClass.match(\/translatepress-([a-z]{2})(?:_[A-Z]{2})?\/i);\n\t\t\tconst currentLanguage = match ? 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We appreciate your patience and look forward to sharing it with you soon.<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t`;\n\t\t\t\tmediaVideoElement.appendChild(errorDiv);\n\t\t\t}\n\t\t}\n\t\t\n\t\tfunction runVideoInjection() {\n\t\t\tif (hasRun_id_69d8f38e47a0a) return;\n\t\t\thasRun_id_69d8f38e47a0a = true;\n\t\t\tupdateVideoDisplay_id_69d8f38e47a0a();\n\t\t}\n\t\t\n\t\t\/\/ Always run on front-end\n\t\tif (document.readyState === 'loading') {\n\t\t\tdocument.addEventListener('DOMContentLoaded', runVideoInjection);\n\t\t} else {\n\t\t\trunVideoInjection();\n\t\t}\n\t\t\n\t\t\/\/ Also run in editor if available\n\t\tif (typeof wp !== 'undefined' && wp.domReady) {\n\t\t\twp.domReady(runVideoInjection);\n\t\t}\n\t})();\n\t<\/script>\n\t\n\t<script>\n\t\tdocument.addEventListener('DOMContentLoaded', function () {\n\t\t\t\n\t\t\t\/\/ Get the block element by ID\n\t\t\tvar blockElement = document.getElementById(\"id_69d8f38e47a0a\");\n\t\t\tif (!blockElement) return;\n\t\n\t\t\t\/\/ Reveal the block\n\t\t\t(function ($) {\n\t\t\t\tScrollReveal().reveal(blockElement.querySelector(\".container .media\"), {origin: \"bottom\", distance: \"20px\", opacity: 1, duration: 1000});\n\t\t\t\tScrollReveal().reveal(blockElement.querySelector(\".container .content\"), {origin: \"bottom\", distance: \"20px\", opacity: 1, duration: 1000});\n\t\t\t}(jQuery));\n\t\t});\n\t<\/script>\n<\/div>\n\n<div id=\"id-69d8f38e47f9f\" class=\"box block content-width dark-content de \" style=\"background-color: transparent; background-image: none;\">\n\t<style>\n\t\t#id-69d8f38e47f9f > .container > .content {\n\t\t\tbackground-color: transparent;\n\t\t\tposition: relative;\n\t\t\tpadding-top: 0px;\n\t\t\tpadding-right: 0px;\n\t\t\tpadding-bottom: 0px;\n\t\t\tpadding-left: 0px;\n\t\t\tmargin-left: 24px;\n\t\t\tmargin-right: 24px;\n\t\t}\n\t\t@media (max-width: 1272px) {\n\t\t\t#id-69d8f38e47f9f.box.block.full-width > .container > .content {\n\t\t\t\tpadding-left: 0 !important;\n\t\t\t\tpadding-right: 0 !important;\n\t\t\t\tmargin: 0 !important;\n\t\t\t}\n\t\t}\n\t\t@media (max-width: 960px) {\n\t\t\t#id-69d8f38e47f9f > .container > .content {\n\t\t\t\t\/\/padding-top: 0px;\n\t\t\t\tpadding-right: 0px;\n\t\t\t\t\/\/padding-bottom: 0px;\n\t\t\t\tpadding-left: 0px;\n\t\t\t}\n\t\t}\n\t<\/style>\n\t<div class=\"container\">\n\t\t<div class=\"content\">\n\t\t\t\n\n<p class=\"has-text-align-center has-small-font-size\"><em>Figure 2: The<\/em> <em>BMR313 continuous, peak and transient peak power protection scheme<\/em>.<\/p>\n\n\n\t\t<\/div>\n\t<\/div>\n<\/div>\n\n\n<\/div>\n\n\t<\/div>\n<\/div>\n\n\n<h2 class=\"wp-block-heading has-medium-font-size\" style=\"font-style:normal;font-weight:600\">Repetition of peak load complicates matters<\/h2>\n\n\n\n<p>The protection scheme used in the <a href=\"https:\/\/flexpowermodules.com\/products\/bmr313\" rel=\"nofollow noopener\" target=\"_blank\">BMR313<\/a> assumes that the die cools down to equilibrium before the next peak current event, but that may not always reflect reality \u2014 peak load repetition rate cannot be predicted. Another approach, adopted in the <a href=\"https:\/\/flexpowermodules.com\/products\/bmr350\" rel=\"nofollow noopener\" target=\"_blank\">BMR350<\/a>, is to monitor load and timing, but filter its resulting analog of junction temperature with a proportion of the previous measurement, the so-called \u2018Exponential Moving Average\u2019 (EMA) method. This then allows for the varying cool-down periods and their durations providing robust protection for the part, particularly as it is regulated, constraining its peak power capability. The EMA method can be extended with multiple averages representing different elements of the heat path, for example to include modelling of the die on its own, with its fast thermal response.<\/p>\n\n\n<div class=\"spacer block\" style=\"height: 36px;\">\n\t<\/div>\n\n<div id=\"id-69d8f38e4bc44\" class=\"box block content-width dark-content de \" style=\"background-color: transparent; background-image: none;\">\n\t<style>\n\t\t#id-69d8f38e4bc44 > .container > .content {\n\t\t\tbackground-color: #eaeef4ff;\n\t\t\tposition: relative;\n\t\t\tpadding-top: 36px;\n\t\t\tpadding-right: 48px;\n\t\t\tpadding-bottom: 36px;\n\t\t\tpadding-left: 48px;\n\t\t\tmargin-left: 0px;\n\t\t\tmargin-right: 0px;\n\t\t}\n\t\t@media (max-width: 1272px) {\n\t\t\t#id-69d8f38e4bc44.box.block.full-width > .container > .content {\n\t\t\t\tpadding-left: 0 !important;\n\t\t\t\tpadding-right: 0 !important;\n\t\t\t\tmargin: 0 !important;\n\t\t\t}\n\t\t}\n\t\t@media (max-width: 960px) {\n\t\t\t#id-69d8f38e4bc44 > .container > .content {\n\t\t\t\t\/\/padding-top: 18px;\n\t\t\t\tpadding-right: 24px;\n\t\t\t\t\/\/padding-bottom: 18px;\n\t\t\t\tpadding-left: 24px;\n\t\t\t}\n\t\t}\n\t<\/style>\n\t<div class=\"container\">\n\t\t<div class=\"content\">\n\t\t\t\n\n<h3 class=\"wp-block-heading has-small-font-size\">The techniques described and implemented in our DC\/DC converters allow peak loads to be handled without having to oversize the converters, but with confidence that they are not being over stressed.<\/h3>\n\n\n\n<p>More details of the methods used can be found in the white paper \u2018Peak Power Load Management in DC\/DC Converters\u2019 available to download <a href=\"https:\/\/flexpowermodules.com\/content-download-form?formid=dd5915d8-9d9f-44ca-9be9-329d33f6c132\" rel=\"nofollow noopener\" target=\"_blank\">here<\/a>.<\/p>\n\n\n<div id=\"block_620ada9d0f3a815c551ea7d5906eb2c0\" class=\"button block\">\n\t<div class=\"container left\">\n\t\t\t\t\t\t<a title=\"Download now\" href=\"https:\/\/flexpowermodules.com\/content-download-form?formid=dd5915d8-9d9f-44ca-9be9-329d33f6c132\" target=\"_blank\" class=\"btn-link\" rel=\"nofollow noopener\">\n\t\t\tDownload now\t\t\t<div class=\"long-arrow\">\n\t\t\t\t<svg version=\"1.1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" x=\"0px\" y=\"0px\" viewBox=\"0 0 19.9 9.9\" xml:space=\"preserve\">\n\t\t\t\t\t<polygon points=\"15.5,0 14.5,0.9 17.4,4.3 0,4.3 0,5.7 17.4,5.7 14.5,9 15.5,9.9 19.9,5 \"\/>\n\t\t\t\t<\/svg>\n\t\t\t\t<div class=\"line\"><\/div>\n\t\t\t<\/div>\n\t\t<\/a>\n\t\t\t<\/div>\n\t<script>\n\t\twindow.addEventListener('DOMContentLoaded', () => {\n\t\t\t(function ($) {\n\t\t\t\t\/\/ Get the block ID\n\t\t\t\tvar id = \"#block_620ada9d0f3a815c551ea7d5906eb2c0\";\n\t\t\t\t\/\/ Reveal the block\n\t\t\t\tScrollReveal().reveal(id + \" .btn-link\", {origin: \"bottom\", distance: \"20px\", duration: 1000});\n\t\t\t}(jQuery));\n\t\t});\n\t<\/script>\n<\/div>\n\n\t\t<\/div>\n\t<\/div>\n<\/div>\n\n\n\t\t<\/div>\n\t<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Moderne Computersysteme, insbesondere in Rechenzentren, weisen oft ein hohes Verh\u00e4ltnis von Spitzen- zu Dauerleistungsaufnahme auf. DC\/DC-Wandler, die die Stromversorgung bereitstellen, k\u00f6nnen dies mit ihren Nennstr\u00f6men f\u00fcr Dauer- und Spitzenstrom abdecken, m\u00fcssen aber genau \u00fcberwacht werden, um eine \u00dcberhitzung zu vermeiden.<\/p>","protected":false},"author":18,"featured_media":32238,"template":"","categories":[90,43,97],"tags":[],"content-type":[13],"class_list":["post-40623","resource","type-resource","status-publish","has-post-thumbnail","hentry","category-data-center-power","category-power","category-power-modules","content-type-blog"],"acf":[],"_links":{"self":[{"href":"https:\/\/flex.com\/de\/wp-json\/wp\/v2\/resource\/40623","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/flex.com\/de\/wp-json\/wp\/v2\/resource"}],"about":[{"href":"https:\/\/flex.com\/de\/wp-json\/wp\/v2\/types\/resource"}],"author":[{"embeddable":true,"href":"https:\/\/flex.com\/de\/wp-json\/wp\/v2\/users\/18"}],"version-history":[{"count":1,"href":"https:\/\/flex.com\/de\/wp-json\/wp\/v2\/resource\/40623\/revisions"}],"predecessor-version":[{"id":40673,"href":"https:\/\/flex.com\/de\/wp-json\/wp\/v2\/resource\/40623\/revisions\/40673"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/flex.com\/de\/wp-json\/wp\/v2\/media\/32238"}],"wp:attachment":[{"href":"https:\/\/flex.com\/de\/wp-json\/wp\/v2\/media?parent=40623"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/flex.com\/de\/wp-json\/wp\/v2\/categories?post=40623"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/flex.com\/de\/wp-json\/wp\/v2\/tags?post=40623"},{"taxonomy":"content-type","embeddable":true,"href":"https:\/\/flex.com\/de\/wp-json\/wp\/v2\/content-type?post=40623"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}