How TINY Can I go? The BEST Power Board is here!

Comments · 516

• GR

  @greatscottlab · 2 years ago (edited) · pinned

  Important! My own designs here were not EMC tested. I will explore that topic in a future video ;-) There we will see whether my boards follow guidelines and how we can possibly change the design to make that happen. Also we will test the Ali Board as well concerning EMC. That will be fun. I hope you are looking forward to that ;-)<br><br>Also if you are interested in Würth Elektronik products/services then you can contact them directly if you are a company or business: <a href="https://www.we-online.com/en/products/components/ordering-form">https://www.we-online.com/en/products/components/ordering-form</a><br>But if you are a without a company then you can contact their distributors about their products: <a href="https://www.we-online.com/en/support/network/distribution">https://www.we-online.com/en/support/network/distribution</a>

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• FR

  @FreeOfFantasy · 2 years ago

  Another idea to get it even smaller: This is a non-isolating converter, so you don&apos;t need a GND pin at output. That enables you to just put all the contacts on one edge. GND in the center, and capacitors on the sides in between. I bet you can make it smaller if you place more components on the backside too, but for manufacturing all components on the same side are prefered.

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• HU

  @hufca · 2 years ago

  Experienced engineer here... Looking at your PCB design i noticed that you make so called via-stitching equally spaced, which is a bad habit. Especially in fast switching circuits. That&apos;s because those places often become nodes of the high frequency standing waves, which in result amplifies the noise, energy loses, and destroys the electromagnetic compatibility of your circuit. <br>This is quite unintuitive, but randomly placing vias (which for an untrained eye may seem unprofessional and ugly) in fact makes your circuit better!

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• BI

  @BigBoyDuckie · 2 years ago

  While browsing TI&apos;s product page for the TPS63020 I came across the TPS631000, which TI itself describes as &apos;Upgraded product with 8-uA IQ and smaller SOT package.&apos;. It would be really cool to see you make a board design using this chip, especially since i couldn&apos;t find any boards using this IC online.

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• KU

  @kurtnelle · 2 years ago

  That is the cutest reflow plate I&apos;ve ever seen!

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• MI

  @mikefrachel8292 · 2 years ago

  The only pcb I&apos;ve seen that makes that hotplate look big!

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• JA

  @jameswoll · 2 years ago

  I would love to see more miniaturization videos! This was great.

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• BE

  @bencemarta5222 · 2 years ago (edited)

  Nice little chip. I have considered using it for backup power for some home-grown smart home devices but ultimately didn&apos;t go through. I missed one thing from the video though, that can make or break a power supply and that is capacitor derating. Class II ceramic capacitors are pretty nasty and change their capacitance if they are DC biased and me not taking that into account actually cost me weeks of troubleshooting because of unstable power caused by the lack of capacitance at the input. TI has a pretty nice online design tool that helps you find derated values and most capacitor manufacturers have a public database.<br><br>P.S. Thanks for reminding me about this IC, I have a project where it should serve me perfectly<br><br>(Edit: corrected grammar)

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• SC

  @scoutjonas · 2 years ago

  Instead of solder capacitors on the backside, stack them on top of each other. It&apos;s nicer to have a flat bottom.

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• OB

  @ObsequiousV4 · 2 years ago

  That giant wurth elektronik case of parts looks amazing.

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• AN

  @antarcticmonkeys · 2 years ago

  This channel is making me want to get back into the electronics hobby.

• SA

  @samfosteriam · 2 years ago

  This was very timely for me. I would love to see the lipo charging ic built into a tiny board like this - that’s something I need for lots of small projects

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