المدة الزمنية 11:48

Thermal Resistance and Heat Transfer in PCB Design

بواسطة Altium Academy

9 272 مشاهدة

310

تم نشره في 2021/09/06

The thermal conductivity of your PCB materials is a vital factor in determining the thermal performance of your circuit board. But what role does thermal resistance play in this process? Zach Peterson details what thermal resistance is, how to calculate it, and more in this video. 0:00 Intro 0:56 What is Thermal Resistance? 2:07 How to Calculate Thermal Resistance 3:09 What Thermal Resistance Actually Tells You 7:25 Heat Sinks 9:15 Thermal Interface Materials For more PCB Layout videos, click here: /playlist/PL3aaAq2OJU5HoYtg5axYOxWeGAaYhSS3Z For more PCB Design for Beginners videos, click here: /playlist/PL3aaAq2OJU5EsYtNwTPHNO3RHNJN34FbO For more Power Integrity videos, click here: /playlist/PL3aaAq2OJU5EGozYZ9e6p0OkjFkwHKpso PCB Thermal Resistance: Theory and Management https://resources.altium.com/p/thermal-resistance-of-pcb Overview of Passive and Active Heat Dissipation Techniques: https://resources.altium.com/p/pcb-heat-dissipation-techniques Design PCBs with a Free Trial of Altium Designer Here: https://www.altium.com/yt/altium-academy/ Don't forget to follow us on social to stay up-to-date on the latest Altium Academy content. Follow Altium on Twitter: https://twitter.com/altium Follow Altium on Linkedin: https://www.linkedin.com/company/altium/ Follow Altium on Facebook: https://www.facebook.com/AltiumOfficial/ Ready to try the industry's best-in-class design experience yourself? Download it today and get started! https://www.altium.com/downloads The Altium Academy is an online experience created to bring modern education to PCB Designers and Engineers all across the world. Here you can access a vast library of free training and educational content covering everything from basic design to advanced principles and step-by-step walkthroughs. Join industry legends as they share their career knowledge, review real-life design projects, or learn how to leverage one of Altium's leading design tools. No matter your level of experience, the Altium Academy can help you become a better Designer and Engineer! About Altium LLC Altium LLC (ASX:ALU), a global software company based in San Diego, California, is accelerating the pace of innovation through electronics. From individual inventors to multinational corporations, more PCB designers and engineers choose Altium software to design and realize electronics-based products. #Altium #PCBdesign #CircuitMaker

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تعليقات - 23

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@Sam-dc9bgالعام الماضي Thanks for the lesson. Well explained. Knowing about this is one of the big things that separates a professional from the hobbyist or student. The professional id="hidden1" class="buttons"> checks if a component can overheat across the entire performance range before the assembly of the prototype. ....وسعت
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@shakurhajibagheri38منذ 2 سنوات thank you very much , very good info, God bless you
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@manaspulikathra7509العام الماضي @Altium Academy Hello Zach.. How do we calculate the Effective Rth if there is an exposed pad (like a FET Drain) on the bottom side of the component. Do id="hidden2" class="buttons"> we consider RthJA in this case too? and how the multi layer pcb and via numbers can help in such scenarios if we need to avoid heatsinks ....وسعت 1
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@himanshushukla7587منذ 2 سنوات how can we calculate copper area on pcb for heat transfer.. or this video shows heat sink for heat transfer if we can use copper pad (open masking) then how to calculate PAD size ..
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@ivelinivanov8845منذ 2 سنوات Great job! Thanks a lot for all the info you have provided with all your videos! Heat sinks are one approach of cooling down our PCB. Could you also show id="hidden4" class="buttons"> how we could do this with Thermal Via?
Thanks a lot in advance! :D ....وسعت
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@danterp3منذ 3 سنوات I appreciate all the great technical videos Zach, thank you.
I would be glad to see example calculations for a LED driver or mosfet, pulling info id="hidden5" class="buttons"> from datasheet to calculate conduction and switching losses and then estimating temperature change.
Practical, easy to understand guidance on switching losses is hard to come by. After looking through a few text books, online articles and videos I still am not totally clear how to calculate switching loss using the values from a real life datasheet. For example PMN30UN rise and fall times list specific conditions (Vds=15V Id=3.7A Vgs=4.5V) which are not my conditions (Vds=30V Id=1.8A Vgs=3.3V). Is there some way I need to utilize Qgs and Qgd to calculate the rise and fall times for my application? Otherwise what is the point of these values and the gate charge waveform (figure 15) shown in every mosfet datasheet? ....وسعت
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@arlindbanushiمنذ 3 سنوات Hi, how about setting the PCB sealed under vacuum? Or it has benefits mostly on high power PCB.
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@mjunaediqbalمنذ 3 سنوات My question is that how to design a heat sink for power MOSFETs in SOIC packages for example SI4401bdy. It is noticed that the heat dissipation don't give in the datasheets.
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@hvstechnology8048منذ 2 سنوات How can we calculate power dissipation of track width or copper area..
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@maks886منذ 3 سنوات How to interpret a thermal impedance graph?