{"id":2257,"date":"2020-03-16T19:42:51","date_gmt":"2020-03-16T19:42:51","guid":{"rendered":"https:\/\/ibex.tech\/resources\/?p=2257"},"modified":"2023-12-13T13:19:40","modified_gmt":"2023-12-13T13:19:40","slug":"mosfet-design-checklist","status":"publish","type":"post","link":"https:\/\/ibex.tech\/resources\/geek-area\/electronics\/mosfets\/mosfet-design-checklist","title":{"rendered":"Mosfet Design Checklist"},"content":{"rendered":"\n<h5 class=\"wp-block-heading\">The basic key checks for using a Mosfet in a circuit design:<\/h5>\n\n\n<p>Drain-source voltage<\/p>\n<p style=\"padding-left: 40px;\">Absolute max rating is well above the max voltage being switched.<br \/>Allow for maximum voltage peeks and pulses that may be present.<\/p>\n<p>Gate-source voltage<\/p>\n<p style=\"padding-left: 40px;\">The voltage you will apply to the gate is within this absolute max rating.<\/p>\n<p>Drain current (continuous and pulsed)<\/p>\n<p style=\"padding-left: 40px;\">The max current ever passed is within this absolute max rating<\/p>\n<p>Resistance (Rds)<\/p>\n<p style=\"padding-left: 40px;\">A mosfet is a resistor when on!!!!<br \/>A 0.5ohm Rds means if you pass 2A through it, it will cause a voltage drop of 1V and produce 2W of heat!!!!<br \/>V= I x R.\u00a0 Voltage across mosfet = Amps x Rds.<br \/>Then its W = V x I.\u00a0 Watts of heat emitted = Voltage drop x Amps.<br \/>It doesn&#8217;t matter what voltage the mosfet is switching, the voltage drop across it, and therefore the heat it produces, is solely a function of its Rds.<br \/>If it will get too hot choose a device with a lower Rds.<\/p>\n<p>Gate-Source leakage current<\/p>\n<p style=\"padding-left: 40px;\">Ensure it won&#8217;t bring the gate voltage out of gate threshold voltage spec if using very high pull resistance values<\/p>","protected":false},"excerpt":{"rendered":"<p>The basic key checks for using a Mosfet in a circuit design: Drain-source voltage Absolute max rating is well above the max voltage being switched.Allow for maximum voltage peeks and pulses that may be present. Gate-source voltage The voltage you will apply to the gate is within this absolute max rating. Drain current (continuous and [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[36],"tags":[],"class_list":["post-2257","post","type-post","status-publish","format-standard","hentry","category-mosfets"],"_links":{"self":[{"href":"https:\/\/ibex.tech\/resources\/wp-json\/wp\/v2\/posts\/2257","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ibex.tech\/resources\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ibex.tech\/resources\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ibex.tech\/resources\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ibex.tech\/resources\/wp-json\/wp\/v2\/comments?post=2257"}],"version-history":[{"count":5,"href":"https:\/\/ibex.tech\/resources\/wp-json\/wp\/v2\/posts\/2257\/revisions"}],"predecessor-version":[{"id":2765,"href":"https:\/\/ibex.tech\/resources\/wp-json\/wp\/v2\/posts\/2257\/revisions\/2765"}],"wp:attachment":[{"href":"https:\/\/ibex.tech\/resources\/wp-json\/wp\/v2\/media?parent=2257"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ibex.tech\/resources\/wp-json\/wp\/v2\/categories?post=2257"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ibex.tech\/resources\/wp-json\/wp\/v2\/tags?post=2257"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}