As an industry professional, I keep coming back to this. It's really useful for when I have to do something simple and cheap. Usually, I'm using big complex PMICs but this is a nice guide for a simple SMPS. Thanks!
@PhilsLab6 ай бұрын
Thank you very much - I'm glad to hear that!
@anilsuha53012 жыл бұрын
This is great information. One request Phil. can you do a video on Input EMI Filter Design for this Buck converter. Not many information is available in internet. say if this converter Fails in EMC Compliance test. How can we solve the problem. What are the design considerations for EMI filter design. It will be interesting as well as informative. Thanks
@PhilsLab2 жыл бұрын
Thank you, Anil. Yes, definitely - I'd like to cover more EMI/EMC topics and will try to make videos on that in the near future.
@ledricelektronika6635 Жыл бұрын
Onsemi (now TI) has a great paper available online, that covers it.
@7GIGEO72 жыл бұрын
Excellent guide Phil, goes into the right amount of detail needed for a proper implementation without getting lost into too much unnecessary theory. Thank you!
@PhilsLab2 жыл бұрын
Thank you very much, Ioannis!
@nabeast19802 жыл бұрын
i had to do a schematic for a buck converter at my internship recently and this definitely helped clarify some of the stuff that I did (per the datasheet) better! The graphic calculator playground tip is something I'll start using too
@PhilsLab2 жыл бұрын
Awesome, glad to hear that! Good luck with your internship :)
@shahsaud9644Ай бұрын
Where are you from and where did you do internship i am also wanted to do internship there
@Avriox2 жыл бұрын
Excellent video as always! Up until now, I've always selected the components "by feel". Step by step your videos help me to build a better understanding of creating electronic circuits and who knows, maybe I'll be able to make acceptable designs one day ;) Thank's for your work!
@PhilsLab2 жыл бұрын
Thank you! Glad to hear the videos have been helpful. Hope everything goes well with your designs :)
@scottduckworth3299 Жыл бұрын
I recently designed my first SMPS PCB, and already ordered the PCB and components before I saw this video. I used the recommended components and layout from the AP63205 datasheet, but now I'm concerned that some components may be out of spec (low capacitance on the input/output caps, and low inductance). I do have an electronic load and oscilloscope, so I'm planning on testing the SMPS at various static and dynamic loads. What sorts of problems should I watch out for? Is voltage stability the primary concern? What about EMI? Your channel is great! I have a software background with no formal training in electronics hardware design, but your channel and a few others have been amazing learning resources. Thank you!
@scottduckworth3299 Жыл бұрын
The datasheet recommended component values worked out well for me. Parts arrived, and I assembled and tested it last night. Using a standard scope probe at 1X with the floppy ground lead, I'm seeing a 10mVpp ripple at 2.2kHz regardless of current. Under load steps between 100mA and 1A it's spiking +/-100mV but recovers within ~30us. Compared to my cheap benchtop SMPS, my PCB circuit exhibits lower ripple, lower noise, and a faster response to the dynamic load. I couldn't be happier for my first attempt at this!
@eleclab42442 жыл бұрын
Your videos are very educative! And I like the topics that you usually talk about
@PhilsLab2 жыл бұрын
Thank you very much! I'm glad that you like the selection of topics as well :)
@jakobhalskov2 жыл бұрын
Would be awesome to see this circuit in real life, so we can poke around the switching node and output to see the switching characteristic :) I remember learning a lot from this, to get a more intuitive feeling of the workings, instead of just drowning in the equations! Other than that; yet another very informative video 🤞🏼
@khaledsaleh6642 жыл бұрын
I'd be grateful for a video on the power supply for STM32H7 family. Thank you for great videos
@PhilsLab2 жыл бұрын
I've recently sent a board off for manufacturing featuring an H7. Will make videos on that when I have it in my hands :)
@Runningr0se2 жыл бұрын
I wish I had this video about 2 years ago.
@Al-Brewster2 жыл бұрын
Thanks for this Phil. Very detailed. I'm currently designing a PCB in which I plan to implement a switching regulator component, so your explanation is going to be really helpful. I might even submit the finished PCB design for you to review
@PhilsLab2 жыл бұрын
Awesome, thank you, Al - glad to hear this is useful. Hope to see your finished PCB soon! :)
@pnjunction56892 жыл бұрын
Excellent video, as usual. Your presentation style is really great. I would love to see a video about some the theory behind the different types of compensation networks used in the more involved dc converter designs.
@PhilsLab2 жыл бұрын
Thank you very much. I've designed a board (that still needs to be manufactured) that I wanted to use to show how to design a control system (digital) for a buck converter. Hopefully that'll show some compensation techniques, albeit digital.
@pnjunction56892 жыл бұрын
@@PhilsLab Cool! Looking forward to that!
@ABaumstumpf Жыл бұрын
16:00 - the video seems to be missing a few seconds there as you were talking about the precision of the resistors being important and it just stops midsentence.
@user-ns6rs6hg9q10 ай бұрын
The slide and the presentation is awesome. Thank you. I need the slide and the schematic and PCB. Thank you indeed
@jeffreydijkstra3391 Жыл бұрын
amazing amount of quality in these video's! can't believe this is free to watch.
@_a_x_s_2 жыл бұрын
Good information. Now I can design a switching power circuit by using the existing “typical” application circuit. Thanks for that!
@michaeldalby1971 Жыл бұрын
Great Video Phil - Thanks for producing some great and informative content
@bartek1532 жыл бұрын
Nice revision of the formulas. Cheers Phil.
@PhilsLab2 жыл бұрын
Thanks, Bart!
@anhkhoa21729 ай бұрын
Absolutely incredible video, great job!
@breedj12 жыл бұрын
I like these kind of video's with example calculations. I also hope you will create one testing this circuit and viewing some signals on the scope
@PhilsLab2 жыл бұрын
Thanks, Joost - definitely will do!
@bryceb123410 ай бұрын
Phil, you're fantastic, sir.
@TYGAMatt2 жыл бұрын
Excellent presentation and great information. Very clear and easy to understand.
@PhilsLab2 жыл бұрын
Thank you!
@TYGAMatt2 жыл бұрын
@@PhilsLab FYI, I DIY'd a PCB yesterday using your guide lines for a 12v - 300V DC converter.... Wow. Practically noise free and without doubt the best I've made so far.
@gtag1742 жыл бұрын
Hey Phil, Great video. I had shared a buck converter schematic for review to your email. It could be a learning curve for others.
@PhilsLab2 жыл бұрын
Thanks, George. I've seen your email - sorry I haven't gotten to it yet. I've received quite a few designs for review.
@wtfucrazy6 ай бұрын
excellent video. thanks!!
@sdgelectronics7 ай бұрын
Don't use larger capacitances than required on the output of a SMPSU unless you want to add a pole reducing the transient response. 10uF was the correct value to use.
@BradKwfc5 ай бұрын
Here's what I would do. Seach Texas Instruments Webench. Select DC/DC converter. Type in your input/output requirements and then submit and select which one is cheapest with the fewest components. Then save the generated files. Am I missing something?
@alexradoi83182 жыл бұрын
Please do one video for the Boost Converter aswell. Incredible video as always.
@PhilsLab2 жыл бұрын
Thank you - yes, I'll be making videos on other topologies as well.
@Electronics_Dreams2 жыл бұрын
Oh My god thanks for that. Greats from Argentina.
@PhilsLab2 жыл бұрын
Thanks for watching, Gaston.
@rafa56365 ай бұрын
Hi, great video and well explained as usual. I have one question about the requirements specification, for a new project how can I know what would the load current be ? I guess there is no formula to calculate it and I have to guess it based on the components in the circuit but is there any rule of thumb to follow while choosing an output current? Thanks in advance!
@Helal_Tech Жыл бұрын
You are one of my reasons to love the British accent. I like your voice. You look like a voice over artist. Could you tell me what is the difference between basic and extended part in electronics? I usually hear you in many videos say that this component is an extended part but I don't know what it is. Thank, Phil.
@PhilsLab Жыл бұрын
Thank you - I'm still waiting for someone to contact me for voice-over work however, I'm afraid :( Difference between basic and extended parts refers to the JLCPCB parts catalogue. On their site, for assembly, you pay a surcharge for using components that are not on their 'standard reels'. These are extended parts.
@Helal_Tech Жыл бұрын
@@PhilsLab I appreciate your fear as a new step but don't make your fear control you. I hope you do well in this work. I really enjoy when I hear you, I bet that one day you will be a professional voice over artist, especially you have a powerful voice tone. I have understood that the extended part won't affect me in design except when I order SMT assembly, I will pay a surcharge. Is that right?
@pigi_experiment2 жыл бұрын
Hi Phil, thank you so much for your really informative videos. I was wondering if you can make a video of how to obtains a CE certification for low voltage device, and in general what are the design suggestion/consideration to don't fails the EMC test.
@cashewmilkfan7 ай бұрын
great video but it seems like there was an editing mistake at 11:04
@Danni40962 жыл бұрын
Thank you!
@romiolover68522 жыл бұрын
Thanks a lot and please can you make more videos teaching Kicad ?
@thegame40272 жыл бұрын
Awesome video.
@PhilsLab2 жыл бұрын
Thank you!
@glewiss66962 жыл бұрын
Hello, Could you make a video on how stm32 HAL works? Meaning why there are all these drivers , call back, macros and how do they connect all together. I'm sure there will be a lot of listeners.
@myetis19902 жыл бұрын
Great job Phil,thanks for the informative presentation Do we need to take the load input cap into account when calculating the output cap of the smps
@rafalzasada88269 ай бұрын
9:46 We calculated Lmin 22uH and we chose part with that value but datasheet says its tolerance is +/- 20%, so it is possible that actual value will be below our Lmin. Is that correct?
@toto1237522 жыл бұрын
Good vidéo, tank you
@Daan874233 ай бұрын
Is it okay to choose the same bulk ceramic capacitors (e.g., 47u) for both the input and output, even though the voltage rating should be different? For reducing the BOM count
@lukaswalczak932 жыл бұрын
Fantastic!
@PhilsLab2 жыл бұрын
Thanks!
@RavindraSingh-jw2sm2 жыл бұрын
Excellent 👏
@PhilsLab2 жыл бұрын
Thanks, Ravindra.
@juniorjacka558 ай бұрын
How could I use the information you provided in this video to make this a Current regulator? I am trying to build a circuit for a fiber laser and I need to be able to variably output up to 10A. I am having a hard time with IC selection and figuring out what components would be best for this amount of power. I'm using a 12v power supply. Any ideas? Maybe a video like this one but for a switching constant current regulator?
@kwekker Жыл бұрын
bro your voice is great
@MatrixOfDynamism11 ай бұрын
How come both the input and output capacitors turn out to be ceramic capacitors? Shoudn't one of them be electrolytic or tantalum?
@mrechbreger2 жыл бұрын
Did you ever get across audible noise on switching regulators? I had those issues with TI parts some time ago. Texas Instruments has a whole list of regulators with audible noise issues (even their EVBs). Maybe it's a feature for science fiction movies that you can hear electronic switching noise. MPS has a good online calculator for various values. The audible noise issue is also known to MPS however they really try to do their best to move the noise out of the audible domain. Not all switchers are affected from TI of course (they have a very broad range of switchers).
@michaelardai97032 жыл бұрын
It also depends on your choice of inductor and capacitor. Both can act as loudspeakers (ceramic caps aren't that different from piezo tweeters...)
@PhilsLab2 жыл бұрын
Surprisingly, I haven't had any issues with audible noise from switchers yet. I've used quite a few MPS and TI parts but haven't across noise like that.
@scottduckworth3299 Жыл бұрын
Does the footprint of the input & output capacitors make a difference here, assuming that the voltage and temperature are within limits of the caps? For example, if I can get an 0603 output cap that meets my requirements, is there any benefit to going with an 0805 of the same capacitance value? Just wondering why I often see larger footprint caps used on the SMPS than elsewhere on the board.
@yacineayachiamor73362 жыл бұрын
Thank you very much
@PhilsLab2 жыл бұрын
Thanks for watching!
@Helal_Tech Жыл бұрын
What sizes of input and output capacitors did you use ?
@ankeshcdac43042 жыл бұрын
you got it...
@alphaprot2518 Жыл бұрын
Just an addendum for input caps - know your DC bias derating (e.g. from the manufacturer's website).
@barunbasnet Жыл бұрын
Dont we need electrolytic capacitor instead of ceramic ones?
@dream_electronic_embedded9285 Жыл бұрын
Please upload input emi filter circuit design
@remy-2 жыл бұрын
Great video! Is there an advantage for the converter to take a bigger capacitor package, like 1210 instead of 0402?
@PhilsLab2 жыл бұрын
Thanks, Remy! Larger sizes are easier to solder, probe, and will typically be available in higher voltage ratings. However, smaller packages will have lower (lead) inductances, which is important for certain circuitry.
@EfraAv2 жыл бұрын
Great video!! I have a question: How can you calculate point 2 @7:35 if your switching frequency isn't fixed as your case but rather variable depending on the output current as in the MIC2251 datasheet?
@PhilsLab2 жыл бұрын
You'll have a nominal current that your design will require, so use that. Otherwise, design for the worst case (e.g. lowest current -> largest inductor).
@EfraAv2 жыл бұрын
@@PhilsLab thank you so much for taking the time to answer my question, Phil! please keep it up with your videos
@rupeshkharole95672 жыл бұрын
Heyy.. your vidio are amazing 👏 can you plz help me where can I start my journey of electronic ( PCB design ) from basic can u suggest me the best vidio yours where it will help me to create my own Flight controller 😅 waiting for your reply 😆😀
@Mr_Wh12 ай бұрын
I can choose 360p or 1080p premium....
@maazsiddiqui63242 жыл бұрын
💕
@rallymax2 Жыл бұрын
While waiting for the boost components video…..
@user-ns6rs6hg9q10 ай бұрын
pls your slide
@theonlyari2 жыл бұрын
One thing i've never really gotten a good handle on is the voltage and size properties of a ceramic. If i can get an 50V 0603 1UF cap, why would i use a 6.3V 0603 1UF?
@JG-mz7hg2 жыл бұрын
Price (in some cases)
@kmnl9262 жыл бұрын
size of cap smaller voltage is smaller size
@benjaminbawkon80402 жыл бұрын
Price, temperature derating, voltage derating, size.. all considerations.. A 0.1uf 50v 0402, for instance, will (almost always) have more voltage derating than the exact same part in an 0603 package. Take a look at the graphs for derating, and you'll begin to see why choosing what you need, but not over-specifying actually ends up being the better choice.
@stevenbliss989Ай бұрын
I have always HATED the back current flow in DUMB (vast majority) of synchronous bucks. The LT3800 is one of the RARE ones that fixes this. ANY THOUGHTS from your experience?????
@stevenbliss989Ай бұрын
There is NO diode in you choice, it is a SYNCHRONOUS controller+switch IC.