What You Need To Know Before Buying A Boost/Buck Converter

  Рет қаралды 509,101

Schematix

Schematix

Күн бұрын

In this video I go over some basics when dealing with Boost or Buck converters (also called step up, step down converters) These types of converters are very useful for increasing or decreasing DC voltage.
Information provided in this video is for educational purposes only.
If you attempt to recreate/replicate anything you’ve seen in this Or any other video, you’re doing so at your own risk.
- Schematix -

Пікірлер: 594
@mikeyotero6566
@mikeyotero6566 4 жыл бұрын
If you got a boost converter that could handle that 11.33 amps, how much amperage would be on the power supply. Like if the power supply were only rated for 6 amps would it burn up
@Schematix
@Schematix 4 жыл бұрын
In the scenario, you described yes the PSU would be overloaded. It's important to remember current or the voltage alone doesn't give a full picture. Let's run over a quick explanation. Let's say my power supply can deliver 10volts and 10 amps. And let's assume I have a load on my boost converter of 30volts at 5 amps. Since my load is only 5 amps, surly my power supply can handle this... Right? Well no, because the total power consumption in watts, far exceeds what my power supply can handle. My PSU can output 10volts x 10amp = 100watts. My load is 30volts x 5amps = 150watts. So my power supply is overloaded. I hope this helps :)
@krlenjuska
@krlenjuska 4 жыл бұрын
For example is you use PC power supply with 12V 15A - its 180W of power. These chinese buck converters have 65-70% efficiency (this is my opinion its not tested) so you will get about 120-130w of power on your output. example 24V 5 A or something like that.
@LEO-xo9cz
@LEO-xo9cz 4 жыл бұрын
So if I want to run a 50W LED strip that is 24v I cant is a 12v 300w Watt psu?
@krlenjuska
@krlenjuska 4 жыл бұрын
@@LEO-xo9cz You can use that psu without problems - any 12v psu with 7-8 amps output will handle that without problems if psu is ok and if wires can handle that for long time. PC psu often have 2 12v lines with 10-20 amps. Use some quality psu if you have.
@LEO-xo9cz
@LEO-xo9cz 4 жыл бұрын
@@krlenjuska Hi. Yes I have 2x 12v 18a lines. I was thinking of using two buck boosts and displays with voltage and current control so I can have two controllable outputs.
@WatchedZ01
@WatchedZ01 5 жыл бұрын
I don’t comment often, but this video was HUGELY helpful in understanding both types. Looking to power a dc laser pointer with a 4s Lipo battery and this is probably the only clear explanation as to what I could use to potentially accomplish this. Thank you!!
@silversrayleigh8980
@silversrayleigh8980 4 жыл бұрын
dont use lipo, use li ion ... lipo is dangerous.
@billyireland4890
@billyireland4890 2 жыл бұрын
@@silversrayleigh8980 stop....li ion to us
@aayashkhadka
@aayashkhadka 4 жыл бұрын
I learned so much in a short period of time. Thank you for making such an informative video.
@MrBanzoid
@MrBanzoid 5 жыл бұрын
I'm an amateur radio operator in the UK. My shack laptop charger (cheap Chinese replacement) was spewing rf harmonics up to 144 MHz. I replaced it with one of the first boost converters you showed to raise the 13.8V shack supply to 19V to run my laptop and all the rf interference disappeared. The laptop takes less than 5A to charge. I stuck the converter with suitable fuses in a die cast box with a small fan and it's been happily working for nearly a year now.
@Mailmartinviljoen
@Mailmartinviljoen 5 жыл бұрын
Very good explanation thanks. The same principle applies to solar with inverter installations. 12v vs 24v vs 36v vs 48v . 12v setups are usually cheaper and easy to find but is limited do to high current draw. Where as 48v setups need less current and helps reducing cable thickness.
@kk-nw2of
@kk-nw2of 5 жыл бұрын
Hail to Schematix. Very informative.
@xaviertaylor759
@xaviertaylor759 4 жыл бұрын
Great to see these things being demonstrated.
@dp0813
@dp0813 6 жыл бұрын
Great video, thanks for posting! Clarified the power & current dependencies & FET sensitivity to those for me! 👍👍👍
@PetterBruland
@PetterBruland 4 жыл бұрын
Thanks for a great video. It's people like yourself who makes KZfaq such an amazing wealth of information. Subscribed.
@gmcjetpilot
@gmcjetpilot 2 жыл бұрын
Thank you for the video. I know the principles but always nice to see the Demo. I just got a DC-DC boost converter in my life as a needed device. I bought solar panels to charge a portable power station (all in one battery, charge controller, inverter, USB ports and display). The Solar Panels full available output was not being accepted by Power Station (74 watts and should or could be double over 100-120 watts of panel). The boost took panel volts of 19.3 to 27.3 (adjustable). The power station is now taking 133 watts! The power station accepts up to 30 volts. It appears to charge efficiently or faster the Power stations likes 24 volts. With the supplied AC power brick to charge from wall outlet, it provides 24 volts and chargers at 118 volts. I tried this booster and was rewarded with more power than I can use. I need about 600 watts a day, to charge my 500 watt power station and keep a small 12v portable frig freezer running. The battery from 6pm to 8am uses about 36% of the power station (when there is low or no sun). Now I am fully charged by noon and it stays that way until sunset. I have sustabable power for the frig/freeze thanks to the boost converter. Before with 79% less charging rate I was in a deficit by about 35%. Excellent.
@josephriffle124
@josephriffle124 6 жыл бұрын
I was able to follow you every step of the way, very informative. Thanks!
@sksdy9444
@sksdy9444 5 жыл бұрын
I ordered a buck converter 5A. and im happy after watching this video 😊
@peterowens290
@peterowens290 7 жыл бұрын
Thanks, a good, simple & clear explanation that covered some issues I had not before considered.
@TheHellfiremissile
@TheHellfiremissile 6 жыл бұрын
Thanks for the video. Very informative to me. Now realize I need to buy a buck boost for a bench power supply. Cheers from VK2KWW
@FijiLaw
@FijiLaw 8 ай бұрын
I am a highly certified electronic technician and i have to say that is a very nice shirt
@swlee9289
@swlee9289 6 жыл бұрын
Nice demonstration. Clear and useful.Thank you very much!
@shifter65
@shifter65 4 жыл бұрын
Oh wow, thank you for the example! I'm planning on making the DIY ATX PSU and using one of these buck/boost converters on the 12V output to get variable voltage, and now have a better idea of exactly what it can and cannot do.
@siliv653
@siliv653 6 жыл бұрын
Very nice explanation, I was bit confused when I thought to buy, thanks for the video sharing
@MAKAWELI187
@MAKAWELI187 6 жыл бұрын
Great video, simple and strait forward, even I got it, so thx.
@Schematix
@Schematix 6 жыл бұрын
You're welcome :)
@RahulGupta-lu6lj
@RahulGupta-lu6lj 6 жыл бұрын
Excellent explaination..with clear demo
@Zaikar
@Zaikar 7 жыл бұрын
That is a nice information you provided! Thanks for pointing out those facts they might sound "basic" but for sure it's something that people who plan to use these items has to know. As I said, thanks sir!
@Schematix
@Schematix 7 жыл бұрын
You're welcome, glad you found the video informative :)
@spacial2
@spacial2 6 жыл бұрын
As others say, Thanks clear and informative.
@gralnrath
@gralnrath 8 ай бұрын
This video prevented me from buying the wrong converter! Thanks!
@TimBrooks2009
@TimBrooks2009 5 жыл бұрын
very helpful, I'm a noob when it comes to electronics so this really helped. Thank you and greets from the UK
@Schematix
@Schematix 5 жыл бұрын
You're welcome :)
@francoisguyot9770
@francoisguyot9770 Жыл бұрын
Nice compare and contrast between all 3 types of DC conversion. Thanks
@guymee
@guymee Жыл бұрын
Absolutely crucial to my understanding, thank you
@mavez6322
@mavez6322 Жыл бұрын
Awesome video, great explanation fella!
@skysurferuk
@skysurferuk 6 жыл бұрын
Useful, thanks for posting.
@mrsheikhusify
@mrsheikhusify 5 жыл бұрын
Very informative, simple explanation
@edwardocamarinha5438
@edwardocamarinha5438 5 жыл бұрын
Great video, simple to understand, thank you
@solosailorsv8065
@solosailorsv8065 Жыл бұрын
CAUTION ; ebat sellers have "Boost/Buck Converter" in the Description, but many ALSO say in the fine print boost only or buck only. Beware friends A Boost/Buck converter needs TWO coils, one for each function. Often you can see two separate coils, some use a double wound toroid, which is effectively two coils on one core
@bobcatt2294
@bobcatt2294 2 жыл бұрын
The lesson illustrates that buck as the default and preferred method as for efficiency not boost. Thumbs up and subscribed.
@computerjantje
@computerjantje 5 жыл бұрын
I just ordered a few step-up converters for the first time becasue My microphone receiver needs 13 to 15 volts but my lead acid battery goes under that. I think the voltage getting low is the reason I get drop outs with my receiver so I like to experiment with stepping up a tiny bit. thank you very much for this really helping video.
@squidben5780
@squidben5780 Жыл бұрын
Very informative and to the point, well explained.
@diegoalves8043
@diegoalves8043 7 ай бұрын
That was a fantastic explanation.
@chrisvanrooyen8982
@chrisvanrooyen8982 4 жыл бұрын
Very insightful, thank you very much!
@fivespeed3026
@fivespeed3026 7 жыл бұрын
Thank you for this easy to understand video.
@user-mk6qr8km6r
@user-mk6qr8km6r 11 ай бұрын
Appreciate the info. I converted my f150 blower motor to PWM and im trying to boost it to 19v. This helps a lot.
@jza61nick
@jza61nick 5 жыл бұрын
super helpful, I use an Inverter for work and it has always bothered me jumping from DC to AC back to DC for the sake of charging small batteries. looks like i can buy a few boost converters and let my 12v batteries do the charging directly. The converter in my laptop charger will especially appreciate this, it audibly hates the back and forth. I dont think amperage will be a problem in my case as the voltage jump will be minimal.
@N0body247
@N0body247 5 жыл бұрын
Wow.. where have i been.. i didnt even know theses existed until a week ago watching another youtuber use one.. im like what the hell is that. Thanks for the explanation..
@HighestRank
@HighestRank 4 жыл бұрын
Raver Magik they didn’t hit the market until Dec.2019.
@pdrfrzpdrfrz8107
@pdrfrzpdrfrz8107 5 жыл бұрын
Many thanks for this explanation. I was about to buy boost instead of a buck one!
@AlexandreSantanaRBG
@AlexandreSantanaRBG 2 жыл бұрын
Great vídeo!!! Thanks for posting...
@Jacques80120
@Jacques80120 5 жыл бұрын
Wow these things are so useful and this video is very helpful.
@JackAstor365
@JackAstor365 Жыл бұрын
VERY USEFUL & CLEAR, THNKS
@peterjackson2632
@peterjackson2632 5 жыл бұрын
Thanks, you sorted out my confusion. I'll now buy a Buck converter
@Schematix
@Schematix 5 жыл бұрын
Happy I could help
@tkelly3866
@tkelly3866 7 жыл бұрын
Thanks, well explained
@ChaoticaExtreme
@ChaoticaExtreme 7 жыл бұрын
T. Kelly. yes it was. If I may. In regard to the first boost converter description and 6 amps. The likely XL6009 onboard, is rated at 5 Amps. I doubt the unit will sustain that level with the converter as is. The heatsink seems too small, and a fan may be needed.
@andreamitchell4758
@andreamitchell4758 6 жыл бұрын
what if my power supply is 24v @ 4 amps and i use a buck converter to drop the voltage to 12v , then will i be able to have a load that draws more than 4 amps, if the buck converter is rated at say 8 or 10 amps? in other words does it give you a current gain as you step down the voltage? could i draw more than 4 amps from my 24v power supply using the buck converter set at 12v ? i have a bunch of old 24v laptop chargers/adapters lying around that are 24v @ around 3.4A or 4A and i i want to know if i can use a buck converter with them(since i can pick them up cheap like little over $2 on aliexpresss) to power some 12v RGBW 300 LED strips which i will be using with 12-24 controllers
@gravelydon7072
@gravelydon7072 6 жыл бұрын
ChaoticaExtreme, The data sheet info on them currently say that above 100 watt, it needs added cooling such as a fan.
@alohahoward1
@alohahoward1 Жыл бұрын
Great explanation, thanks.
@smash7777-
@smash7777- 6 жыл бұрын
Cool video buddy. I'm just learning and found it very interesting and easy to understand. I have been playing around with the same boost converter you showed at the start of your video. I ordered a £3 mixed capacitor pack and was sent a boost converter from one of the Chinese suppliers. :) Score eh? Thanks for sharing!
@TrevorRchannel
@TrevorRchannel 6 жыл бұрын
Very informative video, thank you.
@cw3372
@cw3372 4 жыл бұрын
Wow, this is one of the best videos I've watched so far on this topic! Thanks for the detailed explanation!
@kkkkkkkkkkkkkkkkkkkkkkkkkkkk0
@kkkkkkkkkkkkkkkkkkkkkkkkkkkk0 4 жыл бұрын
Very good Lecture
@evil17
@evil17 6 жыл бұрын
Great vid / demo. I often find YTers only show volts or amps in their demos or experiments, and it is really good to see you show both input and output volts and amps simultaneously, I can't commend your teaching process more highly, as this is the best way to show the relationships between input and output. So many people trying to show overunity of a circuit or device, and only showing one reading at a time, which often portrays a total misconception of what is actually going on in the circuits. It's good to see people trying to defy the Laws of Physics with their experiments, but are only fooling themselves and others when they dont complete the power equation by showing input vs output. One more thing I will add is, that step up/ step down converters are great for solar setups I believe, as when the sun rises and sets the voltage output is reduced and a step up/down converter helps to take advantage of the lower voltages at these times so as to get a little more power from the solar array. Thanks for sharing, I love your thorough explanations in your vids, keep it up!
@jarrellestes1793
@jarrellestes1793 2 жыл бұрын
Very good. Helped y understanding
@MrInfectedsmoker
@MrInfectedsmoker 3 жыл бұрын
just thx man! this is just great for me! i wish you al the best!
@wwabete2009
@wwabete2009 3 жыл бұрын
Thanks a lot! That was quite helpful!!!
@louisdesipio3343
@louisdesipio3343 3 ай бұрын
very good explanation.
@seessee7937
@seessee7937 2 жыл бұрын
Amazing video.
@jarrellestes1793
@jarrellestes1793 2 жыл бұрын
Very helpful. THANK YOU
@roberthatcher2773
@roberthatcher2773 4 жыл бұрын
Great Demo, thanks!
@dicko195
@dicko195 2 жыл бұрын
I click LIKE on your vids before I even watch it. Good info, thanks.
@theinnovati0nlab782
@theinnovati0nlab782 9 ай бұрын
Great video! 👍👍
@balazsmaczak4681
@balazsmaczak4681 3 жыл бұрын
Fantastic video, thanks!!!!
@ronaldbrown9638
@ronaldbrown9638 5 жыл бұрын
Thanks answered a lot I was unclear on 😁👍
@leadeeeeer
@leadeeeeer 7 жыл бұрын
thanks, it really clarified many things to me
@Schematix
@Schematix 7 жыл бұрын
You're welcome :)
@kalleklp7291
@kalleklp7291 5 жыл бұрын
Excellent video..!
@101appsCoZa
@101appsCoZa 4 жыл бұрын
nice tutorial. well explained. thanks
@arloc1283
@arloc1283 5 жыл бұрын
thank you very much, very helpful video
@expertssay3869
@expertssay3869 2 жыл бұрын
Hello from the UK 👍 Thought you'd like this: I got a boost buck converter and 'tested' it on the multimeter and the onboard fuse popped!!! Poop! The fuse had no base/cup/saddle or whatever it was supposed to sit in....it was soldered directly into the board. It was okay to get at with some pin nose pliers but very busy and crammed with parts to see that I had to put my spectacles on 🤓 I pulled at the fuse and the blue plastic came off, leaving the metal behind. On closer inspection of the blue bit...there it was...the burn mark. So my best, after failing to release the legs from the board with the soldering iron I resorted to soldering a new fuse on top of the legs;bridging the gap again with another 15amp fuse. Yes I did that and I completed my project for my OWN use to power my laptop with a car battery.
@mashkg
@mashkg Жыл бұрын
Thank you for the video
@Dansk55
@Dansk55 4 жыл бұрын
13:45 VERY TRUE THAT. lol. Raised my boost converter voltage and pooped the output capacitor. Definitely be careful when upping the voltage with these. Or make a case.
@tubeDude48
@tubeDude48 5 жыл бұрын
Well done!
@Turjak_art
@Turjak_art Жыл бұрын
Thank you for sharing
@BCD39
@BCD39 4 жыл бұрын
Good job! Thank you.
@ChrisHalden007
@ChrisHalden007 2 жыл бұрын
Good one. Thanks
@Devin82m
@Devin82m 4 жыл бұрын
I totally did not consider the input/output amperage, thanks for point that out because I was going to buy a bunch of buck and up converters that were the wrong ratings.
@Schematix
@Schematix 4 жыл бұрын
I'm glad you found this video useful ;)
@rohanramachandra9835
@rohanramachandra9835 Жыл бұрын
Nice job ❤️
@321CatboxWA
@321CatboxWA 5 жыл бұрын
@8:59 Veritable Volt Power Supply , much superior the Desultory Volt Power Supply. :) I like your teaching style. thanks for posting. 73's
@Schematix
@Schematix 5 жыл бұрын
You're welcome
@XxLenasXx
@XxLenasXx 11 ай бұрын
Nice work
@ticktock8751
@ticktock8751 3 жыл бұрын
very good video
@nigelclark7360
@nigelclark7360 3 жыл бұрын
Very good
@w41ty
@w41ty 5 жыл бұрын
Brilliant Thumbs up
@UniProductions
@UniProductions 4 жыл бұрын
Tq ,,, even i am very bad in english but ~~ amazingly i understand everything you say :D Thanks
@victorkustov
@victorkustov 2 жыл бұрын
Хорошее и понятное объяснение. Большое спасибо !.
@jaymanansala4908
@jaymanansala4908 5 жыл бұрын
nice explanation thanks
@grindererrofficial3755
@grindererrofficial3755 3 жыл бұрын
if i have to be honest i have not much from video, coz i was hypnotized by your great shirt. Man i realy likes it :) Need to by same or atleast similiar. btw best wishes for new year :)
@gilbertgababonwe704
@gilbertgababonwe704 6 жыл бұрын
Thank you sir
@reyfrancisfamulagan3271
@reyfrancisfamulagan3271 7 жыл бұрын
Hi @Schematix great video Do you know where I could find the schematic for this modules?
@MadScienceHacksTV
@MadScienceHacksTV 7 жыл бұрын
Did the data sheet not say 8 amps?
@Schematix
@Schematix 7 жыл бұрын
Yes you are correct the data sheets says 8 amps, what you have to remember is the mosfet/IC isn't the only component on that circuit board. The manufacturer rated that boost converter shown in the video at 6 amps max continuous. Obviously the reason for this is somewhere along the chain of components there is a bottleneck and the mosfet/IC isn't it. Otherwise it would be rated at 8 amps. More often than not the mosfet is the bottleneck for current, so it's still worth checking the data sheet to compare the claims vs reality.
@MadScienceHacksTV
@MadScienceHacksTV 7 жыл бұрын
Thanks for explaining this so perfectly. I didn't consider that the data sheet was for the IC and not the boost converter as a whole. I watched this video about 8 times to try and figure out what you were saying about the input voltage and exceeding the 6amp input current. I'm still in the process of learning electronics so this really helps explain voltage and current draw. I ordered a few different buck, boost and boost-buck converters to tinker with. I have a few ideas for some projects and I'm currently trying to learn how to make my ideas work. I'll be checking out your other videos as well. You're pretty concise. Subbed!
@Schematix
@Schematix 7 жыл бұрын
You're more than welcome! The feedback is appreciated :)
@diecksl
@diecksl 7 жыл бұрын
Thanks for this detailed information!
@SAHILKHAN-lu8oq
@SAHILKHAN-lu8oq 3 жыл бұрын
The Bottleneck here is neither the IC nor the other component. The Bottleneck here is the HEAT DISSIPATION. The size of the heatsink provided is not enough for the 8A current. So, the IC will overheat and probably the thermal protection of that IC would kick in and the unit will keep shutting down frequently.
@Al-bd8hm
@Al-bd8hm 7 жыл бұрын
What is the brand of your clamp meter? Thanks for the video.
@MrDoingEverything
@MrDoingEverything 5 жыл бұрын
Thank You
@ryanseidel7436
@ryanseidel7436 4 жыл бұрын
Great video. Do you have a list of boost / buck converters that are good quality? Seems like it's hard to tell which ones are good online.
@RobertDickens2002
@RobertDickens2002 Ай бұрын
I see this is a very old video but let me just say this is the best video ive seen on these what converter do you recommended to run a 100 watt class d amp board in a car environment which would be 14.4v
@Beanie1984
@Beanie1984 5 жыл бұрын
very good video :)
@MikeAustin2012
@MikeAustin2012 3 жыл бұрын
Thank you sooo much. I have that 2nd last one on my bench. I was going to use a PC supply and this dc-dc buck converter to build a variable bench supply. I was ill for a while and forgot that I bought 1 and how I was going to use it. I was going to remove the multi turn pots and extend them to the case. I may get back to this since I also have a DC-V a DC_A digital meter but I am considering using the newer meter/converter package, abt $30 usd? Do you have any info or videos on that, THANKS!
@pierreaugustin154
@pierreaugustin154 6 жыл бұрын
such powerful LED!! O.o
@dtwistrewind7361
@dtwistrewind7361 4 жыл бұрын
If that 10w led can take 34v at 4 amps I'll be amazed, but great explanations given.
@kennmossman8701
@kennmossman8701 3 жыл бұрын
Some are asking about driving an inductive load like a drill or motor. Most converters are NOT designed for inductive loads.
@LifeVlogX
@LifeVlogX 3 жыл бұрын
Thank you!
@buzzkill1988
@buzzkill1988 Жыл бұрын
Thanks you so much
@jamest.5001
@jamest.5001 4 жыл бұрын
I look at these as voltage to current converters, in buck, and current to voltage converter in boost converters, it takes more current to boost the voltage!
I bought super cheap DC-DC converter on Amazon, but It was FAKE.
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