Simple IGBT Drivers for Beginners! (Subtitles)
Ғылым және технология
Subscribe & bell for more content like this! Not easy being deaf, I did have to re-do a lot of the voiceovers...
If you want a simple IGBT driver that can handle a LOT of power, has variable frequency from, say, 50Hz to 20kHz+, and variable duty cycle (good for limiting current rather than ballasting)? Then this video is for you! Here, I explain how Half and Full bridge works, how SG3525 and gate drive circuits work, how to use them, how to keep your IGBTs from dying, how to build IGBT drivers, and more.
Questions? Please ask in comments or discord server.
Some misinformation/incorrect things I said? Please correct me in comments or discord.
JOIN DISCORD: / discord
Gate Drive Waveforms: www.richieburnett.co.uk/temp/g...
NOTE!!! One of the SG3525 schematic in the video, there was an error. Just noticed now.
4:13, bottom of the signal wire was supposed to be connected to OUTA. Not ground. Oops.
SG3525 Driver Full Schematic: media.discordapp.net/attachme...
Things I forgot to add:
- Make sure you get the right SG3525 driver. I'm using SG3525AN.
- I would recommend watching subcooledheatpump's videos on IGBTs. He explains a lot about IGBTs very well.
- ACNW3190s are simply used to drive large IGBT gates. There are better ways, of course.
- 3190s are rated for 5A sink current. As you go up in frequency, it heats up more. This can be fixed by decreasing peak current, or simply upgrade the gate driving.
- The larger the IGBTs (or transistors) (ratings, and size wise), the more peak current of gates you may need to switch at higher frequencies.
- My gates waveform is alright, not a big deal, since I usually drive at lower frequencies. It turns out, Steve said you can use an "asymmetrical gate drive" (look it up, add "gate resistors circuit" to that) to decrease the fall times. Backwards diode with resistor in series, in parallel with the gate resistor.
- The film capacitors in parallel with the DC capacitors, I used 0.3 or 0.33uF 1200V DC.
- C is Collector, positive goes to those. E is Emitter, negative (DC input and opto negative) goes to those. G is Gate, opto output goes to that.
- At higher frequencies, you will get what's called "skin effect". Look it up. This heats up your wires. So, I made litz wires (those red multiple wires one). For litz wire, each wires have to be insulated or enameled, otherwise what's the point?
- It's recommended that you keep everything nice and tidy, and also busbars/wires shorter, to reduce stray inductance, etc.
Yes, you can increase dead time to avoid cross conduction at higher frequencies.
For 20-25kHz max, with 45 to 50% duty cycle, ACNW3190's are used. Be careful not to short them.
SG3525 is used, very simple and I very much would rather that IC than TL494. Bigger frequency range, easier to make a circuit with, has a range of 100Hz to 400kHz (can go lower than like 50Hz and still be able to adjust duty cycle, unlike my TL494 circuit under like 2kHz). With TL494, I could only have a range of like 5kHz to 20kHz, no matter what values of potentiometers and timing capacitor. With SG3525, oh boy, I can have a range of 200Hz to 40kHz or even higher!
Do not repeat anything I do. I am not responsible for any deaths or injuries.
0:00 Intro (how I got into this)
1:14 Intro 2 (I'll explain everything + driver cost)
1:46 Some knowledge + oscilloscope recommended!
2:02 Starting over on video project
2:27 How half bridge work (Animation)
3:08 How full bridge work (Animation)
3:34 Many different gate driving + oscillators
4:34 SG3525 + gate drive schematic overview
8:22 Gate phasing
8:53 Gate wires twisted and short
9:09 Isolation is very important for gates!
9:49 Grounding your SG3525 driver
10:00 Full schematic (Circuit will work 20kHz+)
10:11 Why IGBTs? Which IGBTs do I use?
10:34 How gates work
10:49 Why gate resistors & how to use
11:24 Rise & fall times (voltage drop & cross conduction)
12:36 How your gates waveform should look like
12:41 Do not plug into same outlet/breaker!
13:45 3 things to keep IGBTs from dying
16:09 Buying the parts you need
20:53 Great deals I found
21:52 Adjusting SG3525 circuit
22:48 Testing gate driving
23:32 Testing IGBT
24:14 Transferring circuit onto perfboards
24:28 Building a full bridge IGBT driver
27:00 Rewinding mains transformer
28:06 Checking the gate phasing
28:13 Actual load testing
#highvoltage #arcs #electricity #electrical #electric #igbt
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Пікірлер: 114
There are multiple things I did forget to add. Read description for more. Timestamps and subtitles included. Thanks a lot for watching! I hope you were able to achieve your dreams of owning a powerful IGBT driver to be able to do anything you want! Use them as a "VFD" for AC motors etc especially! AC is AC. Now, have fun with them! Technically, it took me TWO YEARS to finally make this video. (But actually a month and a half to make this video, it's mostly the voice overs that I had to do.)
Awesome vid, I wish more people made quality electronic content like this! Epic work bro
@trenthighvoltage
3 ай бұрын
Thanks
A brilliant educational video Trent. Thank you for all the hard work that you put into making it.👍
@trenthighvoltage
3 ай бұрын
Thanks
Thanks for the mention my dude :) its really amazing to see your progress and the evolution of the driver. Keep up the good work and best wishes.
@trenthighvoltage
3 ай бұрын
Thanks adam
Nice and thanks! So much effort gave us the perfect tutorial :D
@trenthighvoltage
3 ай бұрын
Welcome 🙏
This video was put together really well, I was able to pick up some idea of how these work. Been very lazy to figure these out on my own, this makes it understandable. I bet it took ages to edit, but this was good enough to keep me to the end!
@trenthighvoltage
3 ай бұрын
Welcome man. Build one and drive your 60hz transformers with it, id be interested to see it!
@VariacManiac
3 ай бұрын
@@trenthighvoltage I'll have to give it a try, may even use it for a solid state coil, will make a great vid!
@trenthighvoltage
3 ай бұрын
@VariacManiac you'll need a gdt, sstc are a couple hundred kHz or less depending on how big. If it's a small sstc you'll need smaller igbts for much higher frequencu
That is awesome, I'm inspired to continue with the hobby, i was not touching it for more than a year now. I want to build some big ass HF arc generator. Thanks a lot. You are a rock star!
@trenthighvoltage
3 ай бұрын
Welcome
hey man i been around on and off since your hvh cs days, glad to see someone from the hvh scene actually do something with their life
@trenthighvoltage
3 ай бұрын
I didnt really hvh all the time. glad I quit that community
Finally the vid is here really nice bro
thanks for making this video among others.
Hey bro - take care ! U are soo usefull
Looks like you rectified the AC to DC using diodes and huge capacitors, I would imagine your neighbors' AC waveforms, All flattened near the peaks, due to your capacitors only drawing (astonishingly high) current near the AC peaks. Great time to learn about Active Power Factor correction.
@trenthighvoltage
2 ай бұрын
Ehh. I use a variac to control voltage, so not really. It still draws quite a bit of current, I can feel/hear my smaller variac whining as I increase the voltage a little quicker. It stops when I stop.
great video, thank you
Great video I need to do this ⚡️⚡️ Great work👍👍
@trenthighvoltage
3 ай бұрын
thanks
@ArcAngelTeslaCoil
3 ай бұрын
@@trenthighvoltage I was wondering why you used buck for each optic coupler?
@trenthighvoltage
3 ай бұрын
@@ArcAngelTeslaCoil wdym?
@ArcAngelTeslaCoil
2 ай бұрын
@@trenthighvoltagedo you know the part number or were you got the wide body 3190 opto coupler sockets ? Thanks
So badass, thank you. By the way, coolest voice ever. Legendary, no shitski's.
nice work mate.
@trenthighvoltage
3 ай бұрын
Thanks 👍
Very good Trent, a lot of good information in there for first time builders 👍😎
@trenthighvoltage
3 ай бұрын
thanks appreciate it
yes thank you for this video
@trenthighvoltage
3 ай бұрын
:)
That was awesome, I see a lot of work went it to making it definitely thumbs up 👍👍👍👍👍 A few years ago I built a SLR full bridge converter with TO-247 IGBTs, works to this day! One day I want to build a bigger driver!!!!!
@Traper_T
3 ай бұрын
@Alexelectricalengineering Good to see you ther
@Alexelectricalengineering
3 ай бұрын
@@Traper_T How are you doing, I didn't hear from you for some while?
Great job! You are a fantastic teacher. Is there a place where I can buy this circuit already built?
@trenthighvoltage
3 ай бұрын
No, not really. Just build your own tbh it's not difficult or complicated. That way you actually learn everything about it and what you need to do etc
@shawncalderon4950
3 ай бұрын
@@trenthighvoltage I will watch your video 50 times and not be the gangsta you are with high voltage. It took you years to get this good. Keep up the excellent work! Bummer, I can't buy something close to your fantastic circuit.
YAY NEW VIDEO WOOOOOO
nice work och ....
Hey, thanks for this. Nice explain about control igbt H bridge and half bridge. Just where do you find isolated dc-dc? ( îm french sry)
@Tsindur
3 ай бұрын
he just used transformer
@trenthighvoltage
3 ай бұрын
Custom transformer with isolated coils.
Thank you! That is so cool, and if you see this comment I wanted to ask you something. So I am the crazy MOT kid who didn’t know how to wire a MOT and thought you could see “HHO” and started fights in your discord. Since then I have apologized to all the people in your discord. They have taught me the basis of basics of electronics, and I have built Tesla coils and made my own flyback transformer. I was wondering if I could get back in your discord?
where do you get hold of the huge transfo core?
@trenthighvoltage
2 ай бұрын
they arent that huge, and those ferrite cores are pretty weak and old probably from the 1990s. You're better off with n87 or pc40 or others
Will I be able to use this for induction heating also, If so, I would like to purchase driver boards from you, I'm tired of building drivers.
@trenthighvoltage
3 ай бұрын
Yes you can, just drive it at high frequency ac that's all you need
breezetix, when video with cs2?
This is whole invertors theory lesson
But what can you say about TVS diodes? (on G-E or C-E)
@trenthighvoltage
3 ай бұрын
They're optional, probably recommended. On g-e. C-e it doesn't really do much. I don't use them
Why do you seem to like series resonant half bridges? With parallel resonant half bridges with DC blocking capacitors the IGBTs don’t need to handle the entire resonant current.
@trenthighvoltage
2 ай бұрын
Not sure where you're getting that from, I haven't ever done a series resonant.
RAAAAAAH🦅🦅🦅🦅Where did you take that big ass ferrite core? Is that u86 or something? Bro i would be so grateful if you explained how a hfvttc works.
@trenthighvoltage
3 ай бұрын
They were just cheap 3c80 ferrite cores. Bought from Mads lundbaek (kaiser power electronics). $15 per 4 I believe. They're not very good
@TrenboloneAcetat
3 ай бұрын
@@trenthighvoltage hfvttc bro🙏🙏🙏🙏 at least explain how that works. Pleasee. Especially about the resonator, how the flame appears and how it oscillates(i dont get how a grid cap discharges)
are this driver ok for driving tesla coil at 150kHZ?
@trenthighvoltage
2 ай бұрын
The SG3525 oscillator has a rating range of 100hz to 400kHz. It could do as low as a few Hz, and as high as 550+ kHz as far as I can remember. You need IGBT bricks or smaller packages that can switch at that high frequency.
Noice
ah the real plasma king
"Air fryer wasn't done yet." Hahaha!
@trenthighvoltage
3 ай бұрын
lol
Pls make sure you ARE using a genuine 3525A or better still a 3525B...& not just 3525.... The " B" version is the upgrade of the "A"..whilst the original was just 3525..... Check all 3 datasheets to compare differences....You may want to look up the ML4818 controller... This has dead time built into 4 dedicated outputs and is current mode controlled , unlike the3525 voltage mode chip.. The 4818 is ideal for resonant topology.
@trenthighvoltage
3 ай бұрын
Gotcha, thanks. Yeah, I showed in the video of the SG3525AN that I bought.
@analoghardwaretops3976
3 ай бұрын
@@trenthighvoltagelook up again.... there's something more added to my earlier post...
why do you need a bridge rectifier? cant any rectifier work
@trenthighvoltage
3 ай бұрын
You need ac to dc rectifier to igbts. If you're using batteries or pure dc from supplies, you don't need it and the caps
@Tsindur
3 ай бұрын
@@trenthighvoltage why does it have to be bridge though
@trenthighvoltage
3 ай бұрын
@@Tsindur wdym? You want a full bridge rectifier to convert ac to dc into the igbts.
@Tsindur
3 ай бұрын
@@trenthighvoltage you can just use single diode or 2 diode full wave rectifier though why does it need to be full bridge
@trenthighvoltage
3 ай бұрын
@AZhang728 why wouldn't you want to use a full bridge rectifier? Get full wave and more pure dc? Do whatever you want, I don't see why you.would want to use a single diode or something
i dont dislike the video or anything, i thinks its good and talks about whats going on, i just think that you may need to invest the time into a script. i feel like you realised a bunch of mistakes while cutting, and decided to fix it in post, it feels like there too many jumpcuts
@trenthighvoltage
3 ай бұрын
I did use scripts.
@contomo5710
3 ай бұрын
@@trenthighvoltage okay but you do have to agree that the video is a little jumpy? :P
@trenthighvoltage
3 ай бұрын
@@contomo5710 that's how I edit my videos. I like to keep my videos nice and short if I can to save viewers time. If you don't like it, then too bad
@contomo5710
3 ай бұрын
@@trenthighvoltage i didnt intend to offend. sorry about that
My only real question...why do you need this 😂 just like watching plasma ? Or are you going to build something of your own desgine that requires this or just more tesla coil stuff thats all over the net, maybe long range radio or something ? Dont get me wrong, im an engineering student so i understand the importance of lessons in this. Im just asking whats your personal goals with this project 😂 This type of shit is a 1 way ticket to jesus 😂
@trenthighvoltage
3 ай бұрын
I built it for different transformers to drive at different frequencies. I've pulled 8ft xray transformer arcs with it.
Hate this AI voice
@trenthighvoltage
3 ай бұрын
?? What makes you think this is ai?
good job
@aytacorucova149
3 ай бұрын
Agre
@trenthighvoltage
3 ай бұрын
Ty
Хороший у вас ассортимент
im also into making a 5kw full bridge tesla coil rn. - hakaneren112
@trenthighvoltage
3 ай бұрын
nice
@zhornz
3 ай бұрын
you might remember me from somewhere i guess
@fabriziobrutti1205
3 ай бұрын
Omggggg you are still aliveeee
@zhornz
3 ай бұрын
uhhhh... huh?
@ElPsyCongroo.
3 ай бұрын
Why the fuck would you specify who you are when you know no one wants you here? Were you expecting us to apologize or feel bad about you? @@zhornz
Finally the vid is here really nice bro