Here is why Gate-Drive Transformers are sometimes essential!

Here is why Gate-Drive Transformers are sometimes essential! | MOSFET Driver Part 2 (Potential-free)

День тому

Do you want to know more about the Würth Elektronik components? Then click here: bit.ly/we_onlinecatalog_EN and visit the page bit.ly/Gate_Drive_Transformers to get an overview of gate drive transformers.
Würth Elektronik products, which were used in the video:
- WE-GDT Gate-Drive-Transformer: bit.ly/WE_GDT_en
- WE-GDTI Gate-Drive-Transformer: bit.ly/WE_GDTI_en
- WE-AGDT Auxiliary Gate Drive Transformer: bit.ly/WE_AGDT_en
Previous video: • Fix It!: Self-Dimming ...
DIY Tesla Coil video series: • Make your own Tesla Co...
MOSFET Driver Part 1 video: • Here is why MOSFET dri...
Everything you need to know about Transformers video: • Is it easy to create y...
Facebook: / greatscottlab
Twitter: / greatscottlab
Support me for more videos: www.patreon.com/GreatScott?ty=h
In this video I will conclude the MOSFET Driver video series by having a closer look at Gate-Drive Transformers. As a practical example I will be using a Tesla Coil driver circuit that uses a Gate-Drive Transformer to control its MOSFETs. We will be finding out how the transformer works, how to use it in a circuit, how to create a DIY version and why using a commercial solution often makes more sense. Let's get started!
Websites which were shown (used) during the video:
www.ebay.de/itm/230V-Teslaspu...
ferroxcube.home.pl/news/gate%2...
www.richieburnett.co.uk/temp/g...
www.we-online.de/katalog/data...
Thanks to the Würth Elektronik eiSos Group for supporting this video.
Music:
2011 Lookalike by Bartlebeats
0:00 Presenting my new Tesla Coil
1:30 Why does it perform better than my old one?
2:42 Intro
3:03 Overview of what a Gate-Drive Transformer does
4:36 How does the practical Transformer work?
6:13 Having a look at the Waveforms
6:48 Complementary components for the Transformer
7:36 Creating a DIY Gate-Drive Transformer
8:03 Testing the DIY version
9:03 The problem with designing a DIY version
10:16 Getting a commercial Gate-Drive Transformer
11:05 Testing the commercial solution
11:30 Verdict

КОМЕНТАРІ: 408

@Asu01 3 роки тому

The transition to the sponsorship was so smooth, I didn't realize that I ordered some gate drive transformers from Würth Elektronik and now, they just arrived at my front door.

@HSelimSerdar 3 роки тому

LMAO

@greatscottlab 3 роки тому

Smooth is my middle name ;-) Oh boy. Secreat revealed.....

@liviuconstantin9960 3 роки тому

@@greatscottlab How about you reveal another secret: Did you take the "Great Scott" name from the "Back to the Future" movie?"

@JjMn1000 3 роки тому

Lol

@imbw267 3 роки тому

The game was rigged from the start

@anuragdeshkar 3 роки тому

Man your video production quality is best and also technical knowlegde!!

@greatscottlab 3 роки тому

Thank you :-)

@Bhavesh_g20 3 роки тому

It feels so good whenever I see that notification from great scott Really appreciate your work

@greatscottlab 3 роки тому

Happy to hear that!

@Bhavesh_g20 3 роки тому

@@greatscottlab I've been following you since years I'm very glad you replied It means a lot to me 😊

@supreethathreyas4577 3 роки тому

1:24 greatScott : decent arcs electroboom : !@#$%

@naivedyasharma5821 3 роки тому

Lol

@felixb.1756 3 роки тому

Look at my tesla coil on my channel. These are decent arcs!

@jhoughjr1 3 роки тому

i hate to say but my tiny coil is almost as big as those

@Buzzhumma 3 роки тому

I always know i am going to progress a lot in electronics when the Great Scott notifications come up . You are like purity of knowledge and a great teacher . Thankyou !👍🏻🙏

@Av-ks8uc 3 роки тому

Your videos are awesome! You inspired me, with your LED cubes videos 6 years ago to start learning about electronics, and now, I am 3 years into my EE degree and I love every bit of it! Keep up the great work man, and stay safe!

@greatscottlab 3 роки тому

Great story mate😁 Keep going👍

@thebuttracoon8245 3 роки тому

One more thing to put in my noggin. Thanks Scott! Wishes from Lithuania

@rolandasa.1112 3 роки тому

Thanks for the video! Gate drive tranformers were always a grey area to me, but now with the knowledge you provided I can make projects I never imagined I could build.

@greatscottlab 3 роки тому

Wonderful :-) I love to hear that.

@andrewkay9226 Рік тому

As always a totally engrossing & educational video. The schematic drawings & accompanying explanations are the best on UKposts

@attackaffection5444 3 роки тому

Woah didn't expect that coming!

@amansaxena5898 3 роки тому

Love the MOSFET series ♥️

@darekmario446 3 роки тому

That was a quite helpful video that simplifies this topic. I've always been "scared" of such GDT Circuits. You motivate me to try and practice such solutions! Bleib gesund!

@greatscottlab 3 роки тому

Awesome👍

@saxon215 3 роки тому

As always a well researched and informative video. I wish I could hand draw circuits as neatly as you

@freewarekr 3 роки тому

I saw it well. The content structure, courses, and graphics are all nice. Learn a lot.

@dipubiswas8520 2 роки тому

Hi great scott, your videos are always very informative & practical

@omsingharjit 3 роки тому

This types of videos are so helpful

@Stoneman06660 3 роки тому

Looking forward to going whole hog on my own SSTC as I move up from Slayer Exciter variants to more complex systems. Your tutorials and how-to videos are golden for this. Many thanks from Australia! :D

@sFeral 3 роки тому

Check out the Tefatronix mini SSTC circuit

@joaolucastorres6845 3 роки тому

Great video as always!!! Cheers from Brazil!!!!

@jakobhalskov 3 роки тому

Very useful for my DIY induction heater project :) Thanks for sharing!

@Purple431 3 роки тому

Yay! The video I have been waiting for!

@rohanpawar1603 3 роки тому

The way u draw circuits is amazing

@greatscottlab 3 роки тому

Thanks :-)

@zvotaisvfi8678 Місяць тому

Wow I Love this Idea ! Thanks for sharing I never thought about this before ! Thanks !

@easyelectronics4364 3 роки тому

Beautifully explained! ❤️

@greatscottlab 3 роки тому

Thank you! 🙂

@danstark462 2 роки тому

Thank you sir. You thought this through very well.

@StephanYazvinski 3 роки тому

This is pretty cool keep it up.

@ronvaiz123 3 роки тому

Great video as always

@firstlastname99 3 роки тому

I'm getting a great education from your work on this channel.

@cornevanzyl5880 3 роки тому

Wow man, thank you. You really taught me something.

@micaiaskauss 3 роки тому

An audio tip for you: To reduce the breathing sound between your sentences, use a noise gate (or expander) before your compressor. Your videos are awesome, keep it up.

@gorillaau Рік тому

What if he stops breathing? Is that a satisfactory solution for a home studio?

@micaiaskauss Рік тому

@@gorillaau No, I actually like this guy, but you can stop if you want

@adarsharao 2 роки тому

Thanks for the tutorial... it was really useful.. although I studied these things in college, my teacher hardly had any hands-on experience, he made it so boring that I never apricated power electronics... now it looks a lot interesting.

@vishnup.s.8987 3 роки тому

This is moment the moment I have been waiting for

@squadus1986 3 роки тому

Bro .. malayali alle

@masoudnikroo6775 3 роки тому

You're actually GREAT, thanks a lot!

@pete3897 3 роки тому

What a seriously good serious this is :) EDIT 8:19 - now that sounded different! Great job :) Your explanations are fantastic BTW.

@jamesjohn2537 3 роки тому

Thanks bro. Good explanation!

@neagoecatalin879 3 роки тому

Thank you! Great presentation, as always. I've played in the past with the gate transformers, when I was building the solar charge controllers and the multiple, galvanically isolated outputs bench power supplies. ....and I would say that the bootstrap drivers are, to me more reliable and more versatile. Also maybe because, when comes to calculate those transformers I quickly become lazy/confused/stuffed (?) :)) But I still try to understand what/where could be the advantages of using a gate transformer. Maybe on higher frequencies? Again, thanks! All the best!

@omsingharjit 3 роки тому

Hy is it bad idea to replace Half bridge Gate driver ic with Gate driver transformer in diy class D Amplifier ? Because you have mentioned overshoot , oscillation in waveform ?

@Dudong18 3 роки тому

I'm also your electrifying fan, keep it up

@greatscottlab 3 роки тому

Thanks mate :-)

@Dudong18 3 роки тому

@@greatscottlab No probs, it's also my hubby

@Gamezone-sd3er 3 роки тому

Thanks now I know why cfl driver circuit have this type of feedback ❤️

@JADES-GS-z13-0 3 роки тому

Please make a HFSSTC.

@titasroy9820 3 роки тому

I want it too

@prasunkarmakar3303 3 роки тому

please please bro make video on this topic❤️

@avikroy9698 3 роки тому

You should collab with electroboom. One check circuit 5 times before running it and other one blow circuit breaker 5 times.

@greatscottlab 3 роки тому

I can put it on my to do list :-)

@kennethlazo940 3 роки тому

Very useful video as always thks

@pi-tech1817 3 роки тому

Brother you deserve more views and subs,salute for u ,u doing a great job by sharing knowledge of electronics. I am also electronics and electrical engineer, still studying though,but I am very fasinated in the field of electronics. Learned Soo much basic things from u and electrboom ,plasma channel.👏👏👏great job keep going

@letstec9117 3 роки тому

bro biggest fan

@greatscottlab 3 роки тому

Thanks mate :-)

@attackaffection5444 3 роки тому

Congratulations on 1.5mil subscribers .Wished electronics was a bit more mainstream so you could have a lot more :D

@greatscottlab 3 роки тому

Well, I am still happy that so many people watch my videos and are interested in the subject.

@attackaffection5444 3 роки тому

@@greatscottlab 👍

@AntonioBdeJesus 3 роки тому

Fantastic! Thank you very mutch for sharing!!

@florintherepairman9873 3 роки тому

your videos are the bestt!!!👍👍👍

@GnuReligion 3 роки тому

A Dixon Multiplier can also be employed to drive/store a charge of Source + 12V, then drained to the gate through an optocoupler.

@piconano 3 роки тому

Solid video.

@vivekchauhan7468 3 роки тому

As always nice and informative video. One video request... Make it if possible (according to your convenience) How to measure current using shunt with OP-AMP with microcontroller.

@MCsCreations 3 роки тому

Pretty interesting, dude! Thanks a lot for the lesson! 😃 Those transformers with a magnetic ring and wire I would call analog option... That would show easily all the difficulties! 😂 Anyway, stay safe and creative there! 🖖😊

@electrohardik8497 3 роки тому

Wow , really great I think when I will grow up. I shouldn't go to any University/college for studying electronics as , I have learnt almost everything from you. , I think I am your youngest viewer though , support from India

@dinshithd515 3 роки тому

You are always great.

@throttlescience3639 3 роки тому

You are a great teacher

@greatscottlab 3 роки тому

Thanks :-)

@tejassingh3591 3 роки тому

Very good job

@masondaub9201 3 роки тому

Funny timing, I just made my first Tesla coil a couple weeks ago with a gate transformer.

@firefox1136 3 роки тому

Very nice, I hope, that at some point we will see it at full power. (230v)

@750kv8 3 роки тому

What wasn't obvious why there wasn't as much of a saturation problem with the commercial GDT is that, it must use more turns with a thinner wire, and most importantly, theres a gap spacer in its core, which the toroid transformer clearly lacks. A submillimeter gap in the core prevents saturation, and in switch mode transformers (inverter PSU's, flybacks, electronic CFL / fluoro ballasts etc.) it helps the magnetic field to collapse as quickly as it can, releasing energy stored in the core. Very well made video, Thank You! Great channel! 👍

@d614gakadoug9 7 місяців тому

The last thing you want in a gate drive transformer is energy storage. A ferrite with a permeability of 5000 is usually quite suitable for a gate drive transformer and requires only a few turns for typical modern switcher frequencies. You don't gap the core for a half-bridge converter. Why would you gap the core for the gate drive transformer for the half bridge? Flyback converters are another matter altogether. There the whole intent is to store energy because the inductive component is not used as a transformer at all, except with regard to multiple secondaries.

@750kv8 7 місяців тому

@@d614gakadoug9 - I admit i was mixing up things a bit.

@warrenking1815 3 роки тому

Very nice to see a left handed electronic engineer( like me ) who can draw such great schematics!

@greatscottlab 3 роки тому

Thanks✌

@Debraj1978 3 роки тому

For frequency > 100KHz and high side driver, transformer based gate driver is a better option. If you only have high side drive (with no complementary low side), then transformer based gate driver is the best option.

@matthewmaxwell-burton4549 3 роки тому

Nice vid ! I was wondering, what is the coupling factor between the primary and secondary Tesla coil ? And what is the ressonance frequency of the secondary coil (taking into account the parasitic capacitance). If my memory is right you'll need to drive the coils at this frequency and have low coupling. That's how we got it to work at uni a while ago.

@ELECTROGYAN 3 роки тому

Thank you for this video But hey Scott can you explain what is boost trapping.... in briefly..

@greatscottlab 3 роки тому

Watch Part 1.

@patterrr Рік тому

Scott I just discovered your channel, this is a great video, you got my subscription! I'm curious, how did you probe these circuits with your o-scope, considering that you need separate grounds for your primary and secondary sides? Did you end up using a differential probe one side? Thanks!

@korishan 3 роки тому

I have watched many of your videos, which btw, I enjoy how you break down the electronics into something easy to understand (even though you aren't a native english speaker, I can understand you very well). A few questions have come to mind: 1) How long does it take you to draw all those schematics? You are very meticulous in the drawing. Is the one for the video much neater than the original? 2) With your drawings, how come you go over the lines multiple times when the first mark is quite visible? You use very good lighting, nice white paper with a very dark marker. 3) I've forgotten what my other question was. Will have to post it later when I remember it 😜

@osa1121- 3 роки тому

Hi! I am ur biggest fan ( probably) :D

@bashaaksema94 3 роки тому

Very cool video! One thing though, for a DIY project it is not easy to find a gate drive transformer. Mostly because they are not that widely availeble and also because you more often then not require some specifics that a supplier cant offer you

@viniciusfriasaleite8016 3 роки тому

Great, now I'm waiting for a video with more power on this tesla coil

@alexcaceres3060 3 роки тому

Nice info!

@DEtchells 3 роки тому

I wonder: Could you avoid the core saturation by just reducing the drive voltage, then adding more secondary turns to boost the gate drive voltage back up again? I guess that would add more circuit complexity, to make a driver that’d run the transformer primary at a lower-than-system voltage, but I’m curious if that would fix the issue of core saturation, all else being equal?

@JaviersDIY 3 роки тому

Your very amazing sir

@abhijitdey5060 3 роки тому

Helpful video. I have a question. How to calculate pcb trace width for greater than 35 Amp current rating ? 👍👍🙏🙏

@charlesdickens6706 3 роки тому

.....okay, and in 2¼ minutes of video I've heard you pronounce the word 'series' as 'serious' . I was also making this mistake when I was eight years of age. Actually your English is very good . Thanks for your work .

@itamarcohen6868 3 роки тому

Can you make a video about how to select those component values? Interested to make my own Tesla Coil

@charletonzimmerman4205 3 роки тому

D.C. Welders use same principal, a small voltage winding controls variable, welding current, called a "Saturable reactor", also High voltage, Arc Furnace, for steel Foundry's.

@Neshx1 3 роки тому

As usual u have a nice hand writing

@rougenaxela 3 роки тому

For those who like Digikey or Mouser for purchasing parts online, note that the "Pulse Transformer" section is where you'll find these sorts of gate drive transformers in the catalogs, including some from the sponsor Würth Elektronik. :-)

@moiquiregardevideo 3 роки тому

I am starting to understand inductors and transformers thanks to your videos on the subjects. It would be interesting to know why the tesla coil produce higher voltage with the transformer. Is it because of a hard start and hard stop, because of the spikes on each edge? Or is it because or slightly overlapped on/off for both transistors from faster turn on? Does the improved circuit consume more current when given the same power supply voltage?

@ignition_electronics2520 3 роки тому

Well explained Thanks

@greatscottlab 3 роки тому

You are welcome

@SolaLupus 3 роки тому

Nice video, didn't know about gate transformers before. Do they also apply to low side switching?

@greatscottlab 3 роки тому

Yep. You can use them for switching your MOSFET wherever it is positioned ;-)

@nibba7614 3 роки тому

1:05 how this clamps called? Im looking for order the same

@bhu1334 3 роки тому

Right timing for my sstc build. I was planning on using half bridge drivers with totem poles. Maybe if it isn't satisfactory I'll use a gdt, with different gate drivers. Btw Great Scott have you tried running your circuit interuppted with rectified mains?

@greatscottlab 3 роки тому

Nope. Sorry. I think my lab is too cramped to ever try out mains voltage directly.

@YDKMPablo 3 роки тому

We've got the same variac! Amazing video. About soldering, you'll get cleaner solders if you heat the pad among the leg at the same time in PCB's.

@Caio_Meira 2 роки тому

Thank you! I would to ask a question. If I wish to operate my MOSFET with lower frequency, should I choose a gate drive transformer with higher Voltage-uSecond ?

@chanakasampath9138 3 роки тому

Thanks,great vedio.

@greatscottlab 3 роки тому

Glad you liked it!

@selimdumlu4519 2 роки тому

I need for low frequency isolator transformer so like for 50 Hz is there any transformers for that frequency?

@paulkirchhof9546 3 роки тому

I enjoyed

@leaderautomation7586 3 роки тому

Great job i tried to to find a circuit generate a alternatif current and change between 0 and 1 A du you have an idea to do thise circuit

@Graham_Wideman 3 роки тому

Hey there Great, I think your home-brew tesla coil may be suffering from having that corrugated hat. The peaks of the ridges become regions of high charge concentration, hence high voltage, and thus leak charge to the atmosphere disproportionately compared to the average voltage, this limiting the overall voltage the apparatus can achieve. That's the motivation to have a smooth dome/hat.

@nachoeschetini1718 2 роки тому

With a zvs a FB a spark gap in paralel and a condenser in serie whit a primary coil u got a bigger effect in the secondary coil

@patrickjoseph9476 3 роки тому

Scott, bootstrapping can be also done for a single MOSFET too. Refer, 0033mer's video on MOSFET bootstrapping.

@sudheerkumar5966 3 роки тому

Very good

@ancientflean7594 3 роки тому

The arc is smaller compare to the Electroboom, but is such a good video

@dzee9481 3 роки тому

Just Curious if the same would be true for IGBT? I would assume IGBT are built for driving inductive loads more efficiently?

@TCPUDPATM 3 роки тому

Your videos are fantastic! It’s so informative to an newbie like me. I do have a completely irrelevant question out of utter curiosity. Your accent is so interesting! I sense many Germanic sounds, but overall you don’t sound German. May I ask where you’re from? My guess is that you’ve lived in a couple of different countries!

@greatscottlab 3 роки тому

I lived my whole life in Germany😉

@TCPUDPATM 3 роки тому

@@greatscottlab Thanks for responding! I guess my understanding of accents needs some work 😳 And thank you for your videos!

@walterhernandez3659 3 роки тому

Where can I find that aligator clips that you use from your lab bench power supply? (the yellow ones)

@emanuelgoncalvessantos4499 3 роки тому

Hi, could you please make a video talking about the reactance (reactive power) needed to run a induction motor as generator (induction generator)? I would love to see your analysis of it's waveform, and how they can't produce their reactive power.

@emanuelgoncalvessantos4499 3 роки тому

I mean, what if we just provide enough capacitors to keep it running and rectify it's output?

@peterpanhelllojhon 3 роки тому

Was waiting for this video to release. Very good explanation. I have a question though. Does the negative voltage generated by the transformer not damage the MOSFET?

@greatscottlab 3 роки тому

@BenLMitchell 3 роки тому

Another video to watch tomorrown

@hassankhalid2964 2 роки тому

If I havent started my PhD I wouldn't have understood the gate driver importance from your videos 😅

@poweriserboy 3 роки тому

Nice video! I am only a bit concerned how you use the term "saturation" in some places... The secondar voltage drops due to lack of change (di/dt) in the current through the transformer winding... I don't see any problems with saturation in some cases, if I am not completely wront :D but yeah it's sunday, so might be the case. Still well done and very nice to watch. Some positive words so the algorithm won't think I am anything other than happy with the content :)

@hosseiny1973 3 роки тому

Finnaly which is the beter? Gate driver transformer Or gate driver ic?? And can the gate driver transformer work at 100% duty well?

@craigs5212 3 роки тому

Use caution when running a Tesla coil or Van de Graaff generator in your lab. They have enough voltage and energy to blow out all sorts of expensive test equipment even without being connect to them. Had a guy bring a VdG into our lab one day and managed to wipe out two HP scopes and a CRT terminal. The VdG was not even on the same bench. When he fired it up corona sparks were jumping all over the place from one metal bench to the next killing the equipment. Those things make a wicked E field.