DC-DC Boost converter tutorial
ฝัง
- เผยแพร่เมื่อ 13 ก.ย. 2014
- How boost converters work and how to build a 50W adjustable boost converter circuit.
Want more videos like this? Visit www.afrotechmods.com
Parts list:
LT1370HV:
octopart.com/lt1370hvct7%23pbf...
Electrolytic capacitors:
octopart.com/eeu-fm1h471-panas...
Input and output ceramic caps:
octopart.com/partsearch#!?q=UM...
Schottky diode:
octopart.com/stps5l60-stmicroe...
10uH inductor:
octopart.com/aiur-06-100k-abra...
Potentiometer:
octopart.com/p090s-14t20br10k-...
Heatsink:
octopart.com/574502b00000g-aav...
Schematic:
i.imgur.com/RUInA3O.png
Control loop compensation information:
goo.gl/zxJ9MT
goo.gl/aD8mqF
goo.gl/Z9Oho8 - วิทยาศาสตร์และเทคโนโลยี
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i'm trying to figure out a simple inline way to make a 48 volt automatic battery charger kick out at 50 volts instead of 59 volts . i dont want to have to take the unit apart and change a resistor and in the process maybe burn something out.
You sir have the best tutorial voice I've ever come across.
***** Why thank you sir
+Afrotechmods I could watch your videos all day and i would never get bored! You should become a college professor...
English isn't my mother tongue, but you are speaking so clearly that I can understand everything really easily.
Great job mate !
Magyar vagy?
And this is a great way to learn English
You inspired me to become an electronics hobbyist, and a year later I have 130+ subscribers!
Thank You!
I'm learning More from your videos that my University Teachers!
Thanks a lot!!!
Great tutorials. Good pacing. Concise & clear explanations, with occasional humor thrown in for good measure. Well done.
Dude thanks to you i have made my 1st boost converter, all the pieces gathered from an old laptop. THANKS!!
i built a 12 to 375V boost converter with a MC34006 and a few components from a few dead compact fluorescent lamp. Best thing ever. got 2,2W out of it. Electrocutes a cockroach easily (empirical data).
I added a type A amp made with the same shitty high voltage transistors and got about 175vrms sinusoidal using my siggen. got myself an electro massager. AC feels good :P
Plz build me one :)
Sergio Perez nah, now i'm looking at making a 20KV+ one. Got a few flyback transformers around and was wondering what i could use them for :D
If i can get the resin and the HV caps, resistors and diodes then maybe 50KV max is a good start.
MC34006 is that a dual op amp? Can't find it's datasheet...
So what are you running it as, a comparator? Comparing the reference to the feedback output?
akkudakkupl it's a dc-dc controller, with current sensing. 8pin dip, internal reference. a pretty generic and universal solution. Its design is a bit convoluted but after you do the math it works relatively close to what it said.
here's the datasheet
www.alldatasheet.com/datasheet-pdf/pdf/12065/ONSEMI/MC34063A.html
Laharl Krichevskoy Thanks mate. Probably just what I needed ;-)
I love Afrotechmods videos. In the beginning i couldn't understand a single thing, but now i start to get it. Thank you.
I really like your channel. You tend not to dwell in the theory and do things from a more practical approach
Excellent videos. If love how your videos get right to the point and dispense with the bla bla bla I see in other, similar, videos. Your material is current and the coverage is very thorough in an easy to follow format. Keep 'em coming.
"Don't do dat." wise words from a wise man.
You'd better take the advice when it comes from a cyborg from the future.
best electronics tutorial on SMPS I ever heard about.
I like how you pointed out the shock hazard of these things, they really can give you a nasty bite if you aren't careful, same with any switch-mode power supply.
At least it's not a CRT flyback or HID light ballast, those hurt when they bite...a lot.
Sir, your videos are the best!
Perfect video!! best regards from Brazil!
Great videos, Afrotechmods! :) Very helpful and with direct practical applicability.
Another great video--thanks for posting. I'm learning a lot as I watch your videos.
The way you explain how this works is extremely good.
You can make a SMPS DC->DC fixed voltage converter like you showed us here. However, you should also be able to use one of those to build a constant current SMPS? Can you show us how to do this for all SMPS types (step up, step down, step up/down, flyback, etc)?
Thank you!
I use boost converters in all my 5V and 3V3 projects. They are like less than $2 now on aliexpress
Using a ferrite at the output, allows me to even use these boosters to power my sensitive electronics like sensors. Thumbs up.
Always worth re-watching !
Thank you sir for such an amazing tutorial video, i m currently working on my senior design project and i am powering up some equipment which will need two boost converters: one of 12 v of output and one of 15 v of output, both coming from just 3 and 0.8 input voltage. this principle helps me a lot thank you again
I'm also working on iot project can you help me
The textbook equation for voltage gain is valid for continuous conduction mode, or HIGH CURRENTS, as long as they respect the circuit's limits. Low currents will cause the output voltage to rise above that equation.
Thanks for all the tutorials!
I like how you clarified the electrolytic and the ceramic caps combination on this video nice :) ,and what a coincidence I bought a boost converter on ebay just hour before you posted the video
Supreme clarity. Thank you!
Nice video with a clear explanation. Thank You. The car charger I'm using now uses nominal 12V from the vehicle electrical system and boosts it to 19V. Except when first turned on, then the output will be 22.5 volts. Over the next second or so it drops back to 19V. Putting a 30W load on it makes no difference. What does the output voltage of your circuit look like when first powered on?
Better and more fun learning this circuit than in my university class.
Very useful, thanks for another clean sharp video!
Thanks sir I love you, you saved me so much grief !!
Great videos with good explanations, many thanks.
This video is more interesting and easy to understand than great Scott's video
Very high quality video! Keep it up.
Again, thanks for the awesome tutorial
*With Great Power Electronics Comes Great Responsibility* 💪
Awesome tutorial! Please, any idea on how can I convert from a 12v car leisure battery to 42v/2A? Noticed your board goes up to 30v. Thanks heaps!
awersome explanation
Subbed! Great video just what I need, Ill be watching this 100 times until it sinks in :)
Great videos, I was wondering if have any similar video on buck-boost comp pin as well. Thanks in advance
nice video! I love Your great explanations about electronics,
got me thinking, could I use something like this to step up the ignition coil primary voltage
to let's say 18v (from car voltage 13-14 v) ?
afrotechmods, your my idol!!!.. your the best electrical video tutorials i ever encountered in youtube. today, I was creating a mobile charger using a solar and steam powered generator.. can you suggest a nice type of boost converter which have an input of max 2v 100mah to output 5v 2.1ah (max)????? plssssssss
Now for the fun part... I repair and build tube amps. This begins my journey to build a switching mode / boost converter power supply that can give me the high voltage that I require for the B+. Most tube amps run around the 100 to 200 ma, with a B+ voltage between 199 to 500. I've searched the net and I've found very little information. I am also aware of the risk involved with voltages this high. I have safe work practices. I just need some material and data to steer me in the right direction...
I just made this and it feels sooo goood to have 3v to 35v at my fingertips.
the data sheet for the LT1370 says a 2.7 volt minimum voltage.
great video.I had an unrelated question.what is the difference between an electrolytic & ceramic capacitor?Why can't we use the same type of capacitor?
Very good tut
Very good and educational video. Could you tell me what is the easiest way to convert 5 volts to 9 volts?
As usual ... excellent!
Awesome video. Thanks
"Don't do that!" lol, man! Great video as always
Super good scope
Simply and clear👌
what took me so long to find this channel
Me too
How did you do the feedback calculation with the 10K pot? I know in the datasheet it gives formulas to calculate if only using 2 fixed feedback resistors, but nothing about calculations with a pot. I am doing a thesis project on this and would be helpful if I knew how these were calculated. Thanks!
Thanks, Arnold.
Fascinating!
wow super explanation nice circuit
Good information,thanks.
+Afrotechmods can you please make a video to explain constant current, constant voltage buck converters.?
Thanks for sharing
Yes, you have the best voice, and is carm when you talk, Nice :-)
Congratz! You earn 80 plus silver(%85) efficiency certification :D
If you increased the inductor to something larger, like 56uH, and a larger 50V cap, would that be the proper way to increase the output voltage, to something capable of 50 V? I would imagine that you'd need active cooling, as the heatsink on the controller wouldn't quite be enough. Would you need to cool the cap as well? Also, since my experience with boost converters is very limited, if you increase the values of the inductor and cap, would the duty cycle on the controller need to be as high to boost the voltage higher? Would the lower switching frequency require less cooling?
Thank you!
Good job!
-"Holy...."
Great video, thank you.
Higher efficiency, better phase perhaps and more elegant concept as compared to transformer-transistor-diodes, particularly for wanted D.C. output.
oh my god this is revolutionary
Looking at the data sheet, it recommends one tantalum capactitor for the output capacitor, and says that ceramic capacitors alone have an ESR (effective series resistance) that is too low. Is the electrolytic and ceramic capacitor combo an alternative to the tantalum capacitors? (which are very expensive - about $10 a piece on Digikey. ouch)
Also, what about the frequency compensation capacitors? Can they be ceramic capacitors? What is their required voltage rating?
Do you have any reference about boost converter?
for example how can I build a DC-DC boost converter with whatever Vout I want?
How can I calcular all component including in the circuit.
thanksPS: I can use microcontrollẻ instead of IC to PWM
You quoted "Kickass?" Nice. :)
Do you have some suggestions on a (cheap) design for producing VFD and/or nixie level voltages? Actually the one I really want to make is something that can produce the 600ish volts needed for an old argon dekatron I have!
Great video btw, love the channel!
your tutorial is very good. I tried mine it boosted 3v to 12v using a 100uH inductors but I got lower ampere than that of my input current. My input current was 0.6amps and I got 0.01 at the output. Pls help
Nice video!
My question is that when the switch is open, the capacitor is getting charged( and hence voltage is boosted). However, this happens during every cycle, so the capacitor keeps on charging ( and hence the output voltage keeps on increasing). How is this prevented?
This is a great video
Do you adjust the voltage by inputting more current or by adjusting the resistor?
Can the simple forms of these converters work well at low currents,
Hi ... love your very calerfully eplained videos. Thank you for the hard work. Can i make a request... Are you going to get into signal amplification? Would you be willing to do a FM signal booster for example... all the best
can you do a video on "voltage leakage" - that is - why there is AC voltage (and current?) from smps and maybe a trick to reduce or eleminate them ?
The link for the input and output ceramic caps says page can not be found? I'm a newbie so I am not yet at a place to be able to figure out from the schematic what size I actually, (10uF)? I ordered everything thru the links you provided, and do not want to stray from what you recommend in order to have the best chance for a project that works, this will lessen all the variables I have control over? I have some ceramic caps from other projects but want to make sure I'm using the correct size.
Question: Can I use a 470 uF 200V cap in place of a 50V?
Nice bro... I have a doubt about it, 0.1v can be boostup by this converter?
Im trying to make a 1.5 to 3v booster. Any changes i would need to make to the components. obviously the values depending on my maths but can i still do it with same mofset
Hello,
I want an SMPS with 5v USB input and dual output of 12v and 5V for Battery and Ardunio respectively. I would request you to suggest a PCB board or an IC.
Thanks and Regards
is this ok if i have an unstable power source like pedaling a bicycle connected to an alternator? since my rpm value for the alternator is not high enough, due to the limitation of my bike, because it gives me at most 10volts(not constant due to the speed of the pedaling of the bike...)...should i use this booster circuit in the video?
Would these switching boost converters at 500 kHz (or 72 kHz) cause a lot of noise that would affect nearby analog audio circuits? What about the inductor? How would I design a circuit to match LT1111CN8-PBF? Would a 120 kHz IC be better than a lower frequency IC like I mentioned?
good job
is there any other kind of converter chip i can use similar to the LT1370HV
Thanks for video..But can you please give the standard design procedure to select components for dc dc boost converter..for low voltage solar application..if possible please share useful link..
hey could i use a park gap for the fast switch instead?
If I use 6V, 7amp battery, will I be able to draw more current on the output at 30V? And is the variable resistor on the output to adjust the voltage output?
You could had done my technical school easier if I had seen this videos 5 years ago.
I love your videos.
I've seen videos were people make a boost converter and use an inductors with a secondary coil to oscillate which I guess open and closeses the gate boosting the voltage . Is that something that can be done?
I was looking for dc to dc boost converter but couldnt find powerful enough converter to boost 24v to 36v with 60A output, is there a way to build power converter powerful enough to do so? or is it possible to connect multiple power converters in parallel? to achive high enough power output?
What is the Linear Tech. IC which can be used to handle a 9A input current?
plz post video on how cfl bulb works or circuit for ac lead light with capacitor work
sir, can i step up my 2.3V dc with that circuit diagram?
how to keep the voltage constant and boost up the current !! any suggestions ?
question sir... what if i put a load at the output.. does the converter give enough voltage to the load with minimal voltage drop
Can this type of circuit make a small electric brush-less motor spin faster? I'm trying to make a hovercraft thrust propeller spin faster but I'm limited to either 9 or 18v (two 9v batteries). I think I'm correct that when I boost the voltage, the current decreases? Is there a way to do what I want with light weight electronics?
Hi sir,
i cant find the LT1370 in my country, can you please tell me different one that would work with this schematic?
Is it true for buck converters to increase the output current by dropping the voltage? Are they opposite of each other? I have a solar panel that outputs 19.4 volts that outputs 3.1 amps, I wish to drop that voltage to roughly 13 volts, but I wish for it to be able to supply more current on the output just like a MPPT Controller, would this be possible?
Can i use a 5V power bank if i would get 12V and 2A in the output?