I am a retired Research and Developement Electronics Engineer my good friends. All being well I shall be uploading videos again from next month (September). Have a great day.
If you are making a gate driver with protection what might concern you is the speed in which it reacts to an overcurrent. Avoid turning off the IGBT too quickly in a short circuit, that could lead to a very high turn off voltage. Induced noise into the protection circuit can be a problem so make sure you have a good layout. Make sure that you will be able to supply the peak gate drive current and that your gate driver will turn off if the gate supply voltage falls too low.
You can still use pulse transformers for an inverter, but the outputs of the transformers must be reversed for each SCR. So for example, one SCR is off while the other is on for each phase.
I believe the shout has brought me many more subscribers! Will you show an IGBT working on your channel soon? Thanks for watching and for giving me the shoutout
I don't know too much about SCRs, but it depends on what you will be using the SCR for. SCRs are current controlled, and they take very little current to trigger compared to an IGBT. You can use a pulse transformer to trigger a SCR into conduction. I'd say that might just be the best way if you are using them to rectify AC
HCPL-3120 is suggested for use with IGBTs up to 1200v/100a or 600v/200a. You can use the output of HCPL-3120 as a signal input for a larger gate driver, such as IXDN630CI for driving larger IGBTs. In this way, the HCPL-3120 merely acts as an optoisolator. You can use HCPL-3120 with larger IGBTs, if you make a sacrifice in switching speed. By selecting a gate resistor with a higher value, you can use HCPL-3120 for the larger IGBTs, although switching will be slower. Thanks for watching
Although I wouldn't recommend using an audio signal for driving IGBTs at high power, I can tell you that it does work. I've used IGBTs and the HCPL-3120 with an audio signal to modulate a small lamp with music. The induction heaters I show on my channel usually use the audio output from a PC as well, although the PC would be generating a sine or square wave and obviously not playing music. Thanks for watching
The BAP1793 just receives a light signal from a set of LEDs over a fiber optic cable. I'm no expert on fiber optics, but as far as I know, you would be using fiber optic LEDs connected to the output of the CPU. They would convert the CPU signal into a light signal, then send over fiber optic cable to BAP1739. You can built something like this yourself of course if you buy the fiber optic LEDs and phototransistors Then the phototransistors will pull an active low gate drive down
I note, the 3120 data sheet says : "The voltage and current supplied by this optocoupler makes it ideally suited for directly driving IGBTs with ratings up to 800V/50A. For IGBTs with higher ratings, the VO3120 can be used to drive a discrete power stage which drives the IGBT gate." We are using a MG4001J rated 600V/400A. Will it be necessary to add an additional power stage??How?? Thank you very much. Your video is excellent
The capacitor recommended in the HCPL-3120 datasheet is the one I used. The resistor for the gate driver really depends on the IGBT in question. For the 555 timer, that also depends on the IGBT in question. Obviously smaller IGBTs can use a higher switching frequency, and larger ones will need a lower switching frequency. If you can be more specific about your project, I'd be glad to help
This video is so cool mate, iv watched a couple of times now, and its teaching me a lot about the igbt. Thank you again my friend. ;-) P.s hope the shout for you has increased you subscribers ;-) All the best and keep up the fantastic videos Anthony.
thanks I got a lot from this video. if I can only retain it now. I guess I'll be watching it a few more times. great way of laying everything out. thanks
Wow this video is great and has greatly increased my knowledge on igbt gate drivers and i am definitely going to try this stuff with my 555 :) i had no idea you could build a induction heater with the 555 :) SUBSCRIBED:)
If your gate drivers are optically isolated then I don't see the need, but some aren't. You can use a phototransistor and LED for simple optical coupling There are fiber optic compatible phototransistors and LEDs available at digikey. Personally I think it would be a good idea, because then you can physically separate the CPU and the gate drivers. Good for reducing noise and interference
Hello friend fastly I did use this gate driver on my mosfet power inverter and the gate didn’t turn fully causing a small short circuit blowing the mosfet and I had to use a 700ohms resistor to turn the gate of because I was using 18 voltage at the gate
the 555 dont have a dead time, so you could explode the igbt if one is still turning off and other one turning on, leading to a short circuit, an explosion
I cannot thank you enough my friend ;-) That was so kind of you to go out your way like that and make this video ;) I will give it a go soon" and go back to this video for support and see how I get on lol ;-) The next time I make a video, im going to thankyou and get more subscribers your way because your channel is awesome and you deserve more ;-) There's not many peaple like you that's willing to help...;) Many thanx for sharing your video ;-) Thanx again. BIG THUMBS UP*
For some reason, it is stated in the poopsheet I have on the HCPL-3120 (figure 26/p.17) that the power supplies are connected minus-to-minus!? Link to the particular poopsheet in question: dl.dropboxusercontent.com/u/11778919/HCPL3120.pdf What am I missing out here???
noilex AHA! Found the flaw! In the poopsheet from Avago Technologies [AV02-0161EN] they have the same config os you do (fig. 26/p. 19), which to me seems the most plausible solution. No wonder n00bs like me get left behind:( not cool! Anyway, thanks for the explanation on the subject m8;)
Actually isolated driver is in my experience not that common unless i'ts actually needed for like high side switching. Clare 414 is a typical IGBT/FET driver. I've used a Fairchild FAN3122T because it has an internal pull down resistor so I can skip that part on the board. Has to be the T version, the 'C' cmos version is a useless mystery to me because it needs half the supply voltage to trigger (which for IGBT is typically 15V) which makes no sense. The TTL version works with 3 and 5V logic.
hey thanks for ur video i am looking to make gate driver circuit with all protection, so before i made it what things do i need take in my consideration
Seven years on, and this video is still helping people (like Me). A practical example, alongside an explained schematic is amazingly helpful for folk new to transistor theory. Thanks dude. Edit; for a 120V, 500A load (a large DC forklift motor) using two IGBT bricks in parallel, is there anything to consider beyond the parameters explained in the video, in regards to using that driver IC?
@@subcooledheatpump thanks for your reply! your will to help others is really nice, and your tailored response videos are super generous. The IXDN630 d.sheet notes it has a peak source to sink drive current of 30 Amps. Is that referring to the intended current flowing through the IGBT brick? (in my case, 500 amps)
No, the gate drive current and collector current are separate. You can use HCPL-3120 to drive an IGBT(s) with 500 Amps flowing through it. It's just that you may not want to. an IGBT with a higher current rating will have more gate capacitance, which means in order to turn the IGBT on fast enough, you'll need more gate drive current. HCPL-3120 is really only designed to drive IGBTs with ratings of 1200 volts and 100 amps. So if you're looking to drive multiple high current IGBTs you may want something that can provide more gate drive current
@@subcooledheatpump That's brilliant advice, thanks ever so much. It makes a lot of sense, now someone has put it like that. Do you have any suggestions for a set-up like mine? The DC controller schematic i'm looking at has a DCDC converter capable of outputting -5V to +15V (MGJ2D051505SC) feeding an Opto (acnw3190-000e). Would you use a modular approach like that, in favour of an all-in-one package?
Personally I would, But that's just my preference. All in one approaches do work but to me I'd like to be able to replace the individual parts as they fail, and not need to replace things that aren't broken.
Yes you can absolutely use a full bridge IGBT inverter. Just use 4 gate drivers instead of two. You will still need some capacitance but not nearly as much. Thanks for watching
Nice,but the last part is a bit fuzzy, (and noisy,)an't quite see what goes where Why the pol.cap btw. pins 5 -8? Also,no resistor btw Gate and Emitter? thanks, you are a great teacher.
Hi, Instead using "Big" Capacitor tank, can we use Other 2 IGBT that form "Full Bridge" kind of Structure ? Bytheway I'm Working on Electronics Ballast Project for UV lamp ( Capacity up to 20,000 W )
i notice in this video that you are switching your HCPL-3120 optocoupler with only 2 volts. The datasheet shows that the Max Input Forward voltage current is 1.8 volts. What was your formula for choosing your LED resister? My TL494 KA7500 Driver Board seems to be putting out around 10 volts at the signal. (Now that I hooked it up right!) I am guessing that my resistor would be around 820 ohms at the input of each LED. Can you talk more on choosing your LED resistors and your gate resistors?
Hi, I have learned MUCH from your great videos. Concerning the gate driver, I need one that I can operate at Vcc=12v, since my application is automotive. Do you know how I can drive a 1000v high voltage IGBT with a driver that does not need more than 12v? THANKS MUCH!!!
Hey bud' hope ya well. Still playing with igbts lol and loving them. All thanks to you 👍😉 Don't know if you seen the massive amount of igbts from the scrapyard some time ago, and I think iv enough lol to last a life time. 😉 Well my friend I hope you are good and well. And still getting them subs! 😊 Be safe, Anthony High1voltage1rules
nice explanation man , so basically need of a igbt or mosfet driver is to switch them on and off as fast as possible properly at high frequencies . so that igbt's output current will be function of signal at the gate . isn't it right ??
Hi, great video. I got the HCPL 3120 and an IGBT FS20R06VE3_B2. I am trying to drive an old pancake motor on a washing machine. Its a form of Brushless DC motor. I been searching and searching but ur video is the closest to what Im looking for as everyone else seems to just power up tiny low powered motors. Most IGBT circuits drive inverters that drive ac 3 phase motors. Any help is appreciated as to how your circuit can drive my motor.
Thank you for every thing, I work on photovoltaic flyback inverter consists of center tap transformer, two diodes and two IGBTs to feds a ac current tot the grid I hope to learn me about how can be connection the terminal IGBTs to the transformer and gate drive terminal
could you kindly give the best driver ic and suitable IGBT for controlling the AC induction motor? seeking your valuable response as soon as posssible.
I have a question about the isolated power supply for gate driver. Usually the gate drive doesn't need so much power, so which kind of isolated power supply should I choose in order to put them on PCB? (It seems that if I build a full bridge, I'll need about four power supply)
That really depends on so many variables. What Bus voltage will your inverter be running? How much space on the PCB are you willing to dedicate to the power supplies? This certainly isn't the only method, but I've seen numerous variable frequency drives use a transformer with a single primary driven by a single transistor and multiple secondaries to provide gate drive power. Alternatively, you could use individual DC-DC converters. You only need one for the lower (negative) side IGBTs. The high sides must be isolated from each other, so you could do with only three if you are using a full bridge circuit
@@subcooledheatpump Thanks for your reply! Actually, I'm working on the three phases full bridge inverter.(driving a pretty imbalance load)The required power isn't too much, about 80W(under 48V) per phase. I would like to put the driver circuit and power MOSFET on a 10*10 cm PCB. Since the DC/DC converter really cost me a lot of space, I wonder if there is a better way to implement the circuit?
Hello. Im an electrical engg 3rd year student. This semester Im designing a buck boost converter. Had no idea how to i was going to build this gate driver circuit. The buck boost converter Im designing only has one IGBT. Will it give output exactly the same as in the simulation? Or shud i use 2 IGBTs in the hardware model? Shall be looking forward to your reply.. thanks fr such a great video..
i just seen and heard ant talk about you in his videos on ants channel high1voltage1rules and hes awesome!! you have some good videos too! subscribed thank you
want to chop AC voltage using IGBT...basically using generic buck converter circuit. Can a bridge rectifier across IGBT be helpful so that IGBT always sees a voltage drop across its drain and source and AC voltage can be easily switched?
Hi,In a MOSFET application in high side configuration, what are the pros and cons to using a charge pump to drive the gate? Is it better to use the HCPL3120?
Good video sir, I have designed and assembled similar circuit to drive a full bridge igbt. The circuit works fine below a bus voltage of 70 volts but above 70 v my one side igbts blown out several time. Can u please share what's the problem.
This is great! Explained quite nicely. So, for a DC to single phase AC converter, you’d need 4 or two of these? (Sorry if you already mentioned it, didn’t have time to watch the whole video)
Can you recommend an already made PWM that will fire the HCPL-3120 optocoupler at the right voltage? I am using the TL494 KA7500 Driver Board but it will not fire the led's in the optocoupler.. It seems to only put out .65 volts AC at the signal when connected and around .88 volts AC when it is not connected to the board.. I need the input of the PWM to be 12v. I am building a full bridge inverter.
A TL494 Should have no problems driving the LEDs. I'm not sure I completely understand...what is your input voltage to the TL494? It should be at least 5 volts.
12 volts is the input voltage. The TL494 has a Feed + and a Feed -. It is my understanding that if I put a potentometer on those feet, that I can adjust the voltage output of the board. But, when I use a potentometer, it does not increase the voltage output of the signal. When I ground the Feed - it does not increase the voltage output of the signal. When I use a AC probe across the PWM 1 and PWM 2, it shows a .6 volts. When I use a DC probe across the PWM 1 and PWM 2, it shows as 2.5 volts.
UPDATE .....It will now fire the led, but, the isolated voltage supply (15v) will only put out 5 volts signal to the IGBT. This will not fire my 15v gate of the IGBT. Would that indicate that I need a higher voltage at the LED to trigger the opto? Or is the opto a only ON or only OFF.
I have one question wants to ask. Can MOSFET also applying -5V to 15V switching techniques as you mentioned in (3.54 minutes). To improve the Full bridge switching performances? I'm looking to hearing from your reply. Thank you to contribute this tutorial.
Yes you can use Negative gate drive, or negative gate bias to hold a MOSFET in the off state. This doesn't necessarily improve switching but it does ensure that the MOSFET won't be accidentally triggered on by noise or interference. Thank you for watching
Wow. This is very cool! I wonder if you could design a schematic for me since I'm deaf? I'm going building a higher voltage in future. You're good teach btw.
Hi, I 'm using a irf4bc40u IGBT used in the high side , which allows the passage of a current from the discharge of a capacitor on a inductor , which controls the gate of the IGBT receive pulses of 15V for 400 microseconds every 50 milliseconds , the problem is that the IGBT heated too fast , you think with this you can solve that problem explain , greetings and thanks in advance .
+Moises Perez IRF? Thats a mosfet. Did you mean IRG? How many amps was your load? The amp rating on the spec sheet assumes you are providing sufficient cooling.
Hey, i have a question, so after few of IGBT, i dont have a real answer of that I'm just asking if the SKM145GB123D can switch at 120~ Khz, and what's the maximum frequency ? thx! (i'm noo for the datasheet check)
First thank you but i have problem when connected same type of igbt you use how i controlling power circuit 400v by use 555timer low voltage control where you have G: CONNECTED TO CONTROL SIGNAL AND E: CONNECTED TO >>> You have tow E one for power control second one to control circuit i would like explain this point
You can technically, but it is not recommended. You can drive an inductive load with one IGBT. The problem is the turn off voltage, it spikes too high and the IGBT breaks down so you can only use very low voltages.
Great video Dude!!! I have some problem It would be very nice if you could help I am using same Gate driver circuit except I am not using any snubber .I am using single switch as chopper for Dc Voltage and Load is Bulb. I am varying Duty Cycle using Arduino . Now the problem is when I apply 220V DC my circuit works fine Bulb dims as I decrease duty Cycle. But when I apply Nearly 120V (or lower) I can control the dimming but BULB dont switch off at 0 duty cycle.
Try this, Apply 220 VDC to your circuit as you would normally, except this time short the IGBT gate and emitter terminals. Do you still have the same problem?
I have some q41 motor uesding a toshiba mp6750 I need to use this kind of igbt to control the motor I need a simple circuit to control it what do you recommend
You really need a good gate driver like HCPL-3120 to drive the IGBT gate properly. Also PWM should be done with a better setup than a 555. For example, a triangle wave generator and a comparator will give much better results. I just show the 555 here to demonstrate that the gate driver will work with a 0 to 5 volts input, which is basically what a 555 outputs.
The resistor values for the output really depend on the IGBT you want to drive. This specific gate driver can only output a peak current of 2 amps, so if the input is 15 volts, you can't go any lower than a 7.5 ohm gate resistor. As for the LED, that depends on the signal supply voltage. I think I usually use a 1K resistor in series with the LED when the signal supply voltage is 5 volts
Thanks so much I am looking to drive mg200q2ys40 igbts....i was lucky enough to acquire 24 of them from a set of MRI drivers for 30 bucks :). I am first looking to drive an xrt much like high1voltage1rules. Then move on to perhaps a 3 phase converter an induction heater and a sstc. I'll try out the 7.5 ohm and the 1k. On behalf of all of us interested in igbts I thank you for all of the help you have given us. Also if you could shoot me your email at andrewboerder@gmail.com I would greatly appreciate a more direct line of communication with you and your expertise, thanks and have a great day! Sincerely, Andrew
Is it possible to step up voltage using ( mosfet / igbt) and at the same time step up current for example step up 10 volt to 12 volt and output current 600 amp
You can use either MOSFET or IGBT to create a boost converter to boost up the voltage, or a buck converter to reduce the voltage. Power stays the same, minus some switching losses. So the output current will depend on the ability of the power source
I admire your understanding of electronics and wish I had it myself! Mechanical things have always came natural to me, but electronics is still a hard work in progress! Did you go to school for this?
Hi I need some help An a IGbT I have a q41 quickroton motor it has an igbt in it need to use a driver to run the IGBT speed controller it's a sewing machine servo motor .thank you
this (HCPL-3120) can use in 3-phase inverter? (Adjust frequency 0 to 100 Hz) which one bestter in 3-phase inverter (HCPL-2120 TLP250 IR2133 or else) thank you.
HCPL-3120 can be used in a 3 phase inverter, however if the bus voltage exceeds about 400 volts, then you will likely want to use HCNW-3120 for the high side IGBT gates. This is because HCNW-3120 has a higher isolation voltage rating. Thanks for watching
+LAHernandez Probably no more than you got from your PC while typing your reply to me. IGBTs switching at a few kHz do pretty much nothing to the human body. That is, unless you touch the DC Bus terminals, that would probably wake you up pretty fast.
Hi Buddy,Can you help me to sort out an issue on a Chiller Unit whose gate driver is lock out on circuit 2 only .IC 031-02066-001 is used .I just replaced the IGBT card and now the gate driver is locked out on the other pcb card.Thanks
Not sure I completely understand.. Did and IGBT fail and you replaced it? If so, you will likely need to replace the gate driver. Usually, but not always, when IGBTs fail they take the gate drivers with them
Dear sir What is the value of IGBT using switching circuit , to ON for Vge=4v~5v and its output is Vce=250v &above and Ic=Ie=3A &Above and its switching time below 10ms. Thank you.
A great tutorial. I knew nothing about IGBTs. Building electric car later this year and this video will help me a great deal. Many thanks.
Hello! We are Emin and Gamze. We are curious about what is your occupation right now?
I am a retired Research and Developement Electronics Engineer my good friends. All being well I shall be uploading videos again from next month (September). Have a great day.
@@MYNICEEVthank you so much sir. I will be an engineer next year. could i ask you some questions about this from mail or something.
Glad you enjoyed it, and I'm happy to help. Thanks for watching
If you are making a gate driver with protection what might concern you is the speed in which it reacts to an overcurrent. Avoid turning off the IGBT too quickly in a short circuit, that could lead to a very high turn off voltage. Induced noise into the protection circuit can be a problem so make sure you have a good layout. Make sure that you will be able to supply the peak gate drive current and that your gate driver will turn off if the gate supply voltage falls too low.
You can still use pulse transformers for an inverter, but the outputs of the transformers must be reversed for each SCR. So for example, one SCR is off while the other is on for each phase.
I believe the shout has brought me many more subscribers! Will you show an IGBT working on your channel soon? Thanks for watching and for giving me the shoutout
I don't know too much about SCRs, but it depends on what you will be using the SCR for.
SCRs are current controlled, and they take very little current to trigger compared to an IGBT. You can use a pulse transformer to trigger a SCR into conduction. I'd say that might just be the best way if you are using them to rectify AC
HCPL-3120 is suggested for use with IGBTs up to 1200v/100a or 600v/200a. You can use the output of HCPL-3120 as a signal input for a larger gate driver, such as IXDN630CI for driving larger IGBTs. In this way, the HCPL-3120 merely acts as an optoisolator. You can use HCPL-3120 with larger IGBTs, if you make a sacrifice in switching speed. By selecting a gate resistor with a higher value, you can use HCPL-3120 for the larger IGBTs, although switching will be slower. Thanks for watching
Although I wouldn't recommend using an audio signal for driving IGBTs at high power, I can tell you that it does work. I've used IGBTs and the HCPL-3120 with an audio signal to modulate a small lamp with music. The induction heaters I show on my channel usually use the audio output from a PC as well, although the PC would be generating a sine or square wave and obviously not playing music. Thanks for watching
The BAP1793 just receives a light signal from a set of LEDs over a fiber optic cable.
I'm no expert on fiber optics, but as far as I know, you would be using fiber optic LEDs connected to the output of the CPU. They would convert the CPU signal into a light signal, then send over fiber optic cable to BAP1739. You can built something like this yourself of course if you buy the fiber optic LEDs and phototransistors Then the phototransistors will pull an active low gate drive down
I note, the 3120 data sheet says : "The voltage and current supplied by this optocoupler makes it ideally suited for directly driving IGBTs with ratings up to 800V/50A. For IGBTs with higher ratings, the VO3120 can be used to drive a discrete power stage which drives the IGBT gate." We are using a MG4001J rated 600V/400A. Will it be necessary to add an additional power stage??How?? Thank you very much. Your video is excellent
The capacitor recommended in the HCPL-3120 datasheet is the one I used. The resistor for the gate driver really depends on the IGBT in question. For the 555 timer, that also depends on the IGBT in question. Obviously smaller IGBTs can use a higher switching frequency, and larger ones will need a lower switching frequency. If you can be more specific about your project, I'd be glad to help
I gotta score a handheld digital scope one of these days.
I just have a 20Mhz desktop scope.
This video is so cool mate, iv watched a couple of times now, and its teaching me a lot about the igbt. Thank you again my friend. ;-)
P.s hope the shout for you has increased you subscribers ;-)
All the best and keep up the fantastic videos
Anthony.
thanks I got a lot from this video. if I can only retain it now. I guess I'll be watching it a few more times. great way of laying everything out. thanks
Wow this video is great and has greatly increased my knowledge on igbt gate drivers and i am definitely going to try this stuff with my 555 :) i had no idea you could build a induction heater with the 555 :) SUBSCRIBED:)
If your gate drivers are optically isolated then I don't see the need, but some aren't. You can use a phototransistor and LED for simple optical coupling
There are fiber optic compatible phototransistors and LEDs available at digikey. Personally I think it would be a good idea, because then you can physically separate the CPU and the gate drivers. Good for reducing noise and interference
Hello friend fastly I did use this gate driver on my mosfet power inverter and the gate didn’t turn fully causing a small short circuit blowing the mosfet and I had to use a 700ohms resistor to turn the gate of because I was using 18 voltage at the gate
the 555 dont have a dead time, so you could explode the igbt if one is still turning off and other one turning on, leading to a short circuit, an explosion
Excellent explanation with a ton of detail! Awesome tutorial video man.
I cannot thank you enough my friend ;-)
That was so kind of you to go out your way like that and make this video ;)
I will give it a go soon" and go back to this video for support and see how I get on lol ;-)
The next time I make a video, im going to thankyou and get more subscribers your way because your channel is awesome and you deserve more ;-) There's not many peaple like you that's willing to help...;)
Many thanx for sharing your video ;-)
Thanx again.
BIG THUMBS UP*
For some reason, it is stated in the poopsheet I have on the HCPL-3120 (figure 26/p.17) that the power supplies are connected minus-to-minus!?
Link to the particular poopsheet in question:
dl.dropboxusercontent.com/u/11778919/HCPL3120.pdf
What am I missing out here???
b.t.w. this holds true for the datasheets 5965-4779E and 5965-7875E both.
noilex
AHA! Found the flaw! In the poopsheet from Avago Technologies [AV02-0161EN] they have the same config os you do (fig. 26/p. 19), which to me seems the most plausible solution.
No wonder n00bs like me get left behind:( not cool!
Anyway, thanks for the explanation on the subject m8;)
Hello man, I'm from Brazil, nice job you do. Could you make some video teaching about Desaturation as a protection system from IGBT? Thanks a lot.
Actually isolated driver is in my experience not that common unless i'ts actually needed for like high side switching.
Clare 414 is a typical IGBT/FET driver. I've used a Fairchild FAN3122T because it has an internal pull down resistor so I can skip that part on the board. Has to be the T version, the 'C' cmos version is a useless mystery to me because it needs half the supply voltage to trigger (which for IGBT is typically 15V) which makes no sense. The TTL version works with 3 and 5V logic.
Why ate wires to the IGBTS on every gate I have seen are twisted?
hey thanks for ur video i am looking to make gate driver circuit with all protection, so before i made it what things do i need take in my consideration
Seven years on, and this video is still helping people (like Me). A practical example, alongside an explained schematic is amazingly helpful for folk new to transistor theory. Thanks dude.
Edit; for a 120V, 500A load (a large DC forklift motor) using two IGBT bricks in parallel, is there anything to consider beyond the parameters explained in the video, in regards to using that driver IC?
both IGBTs should be on the same heatsink, and as close as possible. You might consider using a larger gate driver, such as IXDN630
@@subcooledheatpump thanks for your reply! your will to help others is really nice, and your tailored response videos are super generous.
The IXDN630 d.sheet notes it has a peak source to sink drive current of 30 Amps. Is that referring to the intended current flowing through the IGBT brick? (in my case, 500 amps)
No, the gate drive current and collector current are separate. You can use HCPL-3120 to drive an IGBT(s) with 500 Amps flowing through it. It's just that you may not want to. an IGBT with a higher current rating will have more gate capacitance, which means in order to turn the IGBT on fast enough, you'll need more gate drive current. HCPL-3120 is really only designed to drive IGBTs with ratings of 1200 volts and 100 amps. So if you're looking to drive multiple high current IGBTs you may want something that can provide more gate drive current
@@subcooledheatpump That's brilliant advice, thanks ever so much. It makes a lot of sense, now someone has put it like that. Do you have any suggestions for a set-up like mine? The DC controller schematic i'm looking at has a DCDC converter capable of outputting -5V to +15V (MGJ2D051505SC) feeding an Opto (acnw3190-000e). Would you use a modular approach like that, in favour of an all-in-one package?
Personally I would, But that's just my preference. All in one approaches do work but to me I'd like to be able to replace the individual parts as they fail, and not need to replace things that aren't broken.
really good ! how is the igbt response if you would feed them an audio signal ?
Yes you can absolutely use a full bridge IGBT inverter. Just use 4 gate drivers instead of two. You will still need some capacitance but not nearly as much. Thanks for watching
What about making a IGBT audio amp 😅
Thank you! I asked something on another video there, but I just stumbled upon this one..! Very nice.! :)
Great video!.
What is the frequency of your inductive heater?
Hi, Thanks a lot for the great video, but can you please tell me how can I use MSP430 g2553 to switch a half bridge inverter?
Nice,but the last part is a bit fuzzy, (and noisy,)an't quite see what goes where
Why the pol.cap btw. pins 5 -8?
Also,no resistor btw Gate and Emitter? thanks, you are a great teacher.
Hi, Instead using "Big" Capacitor tank, can we use Other 2 IGBT that form "Full Bridge" kind of Structure ?
Bytheway I'm Working on Electronics Ballast Project for UV lamp ( Capacity up to 20,000 W )
hello far away friend. been some time since we spoke. hope your well and your doing well in life.
regards,
Anthony.😉👍
Интересное видео, спасибо. А полную схему с двухполярным питанием можно у вас попросить?
i notice in this video that you are switching your HCPL-3120 optocoupler with only 2 volts. The datasheet shows that the Max Input Forward voltage current is 1.8 volts. What was your formula for choosing your LED resister? My TL494 KA7500 Driver Board seems to be putting out around 10 volts at the signal. (Now that I hooked it up right!) I am guessing that my resistor would be around 820 ohms at the input of each LED. Can you talk more on choosing your LED resistors and your gate resistors?
Hi, I have learned MUCH from your great videos.
Concerning the gate driver, I need one that I can operate at Vcc=12v, since my application is automotive. Do you know how I can drive a 1000v high voltage IGBT with a driver that does not need more than 12v?
THANKS MUCH!!!
wow im gonna have to find some of those isolating gate drivers :-) im just using TC4424 at the moment:-)
Hey bud' hope ya well. Still playing with igbts lol and loving them. All thanks to you 👍😉
Don't know if you seen the massive amount of igbts from the scrapyard some time ago, and I think iv enough lol to last a life time. 😉
Well my friend I hope you are good and well.
And still getting them subs! 😊
Be safe,
Anthony
High1voltage1rules
nice explanation man , so basically need of a igbt or mosfet driver is to switch them on and off as fast as possible properly at high frequencies . so that igbt's output current will be function of signal at the gate . isn't it right ??
Hi, great video. I got the HCPL 3120 and an IGBT FS20R06VE3_B2. I am trying to drive an old pancake motor on a washing machine. Its a form of Brushless DC motor. I been searching and searching but ur video is the closest to what Im looking for as everyone else seems to just power up tiny low powered motors. Most IGBT circuits drive inverters that drive ac 3 phase motors. Any help is appreciated as to how your circuit can drive my motor.
Is there any CI for a nonisolated gate driver? or if I want to use a discrete component, what component should I use?
Thank you for every thing, I work on photovoltaic flyback inverter consists of center tap transformer, two diodes and two IGBTs to feds a ac current tot the grid I hope to learn me about how can be connection the terminal IGBTs to the transformer and gate drive terminal
thanks for the video mate, it's a great explanation of what i've been trying to acheive with MOSFETS. i also found a lot about GATE voltage :-)
The ground of isolated power supply and the IGBT emitter ground are the same or is it diferent
Please advise the gate resistors parameters
could you kindly give the best driver ic and suitable IGBT for controlling the AC induction motor?
seeking your valuable response as soon as posssible.
I have a question about the isolated power supply for gate driver. Usually the gate drive doesn't need so much power, so which kind of isolated power supply should I choose in order to put them on PCB? (It seems that if I build a full bridge, I'll need about four power supply)
That really depends on so many variables. What Bus voltage will your inverter be running? How much space on the PCB are you willing to dedicate to the power supplies? This certainly isn't the only method, but I've seen numerous variable frequency drives use a transformer with a single primary driven by a single transistor and multiple secondaries to provide gate drive power. Alternatively, you could use individual DC-DC converters. You only need one for the lower (negative) side IGBTs. The high sides must be isolated from each other, so you could do with only three if you are using a full bridge circuit
@@subcooledheatpump Thanks for your reply! Actually, I'm working on the three phases full bridge inverter.(driving a pretty imbalance load)The required power isn't too much, about 80W(under 48V) per phase. I would like to put the driver circuit and power MOSFET on a 10*10 cm PCB. Since the DC/DC converter really cost me a lot of space, I wonder if there is a better way to implement the circuit?
what is the maximum IGBT gate capacitance for the HPCL3120? can i drive a 600A igbt module with it or i need greater current? Thank you
Hello. Im an electrical engg 3rd year student. This semester Im designing a buck boost converter. Had no idea how to i was going to build this gate driver circuit. The buck boost converter Im designing only has one IGBT. Will it give output exactly the same as in the simulation? Or shud i use 2 IGBTs in the hardware model? Shall be looking forward to your reply.. thanks fr such a great video..
u need only 1 switch man..for simplicity u can use hcpl316j gate driver for that.2 igbt is the case for synchronous converter.
Does 50 amper igbt gate drive can be used for 100 amper
i just seen and heard ant talk about you in his videos on ants channel high1voltage1rules and hes awesome!!
you have some good videos too!
subscribed
thank you
can i use it to drive 30n604ad igbt for my LC resonant smps ? about anti pararel diode is it really need?
Give us the parts list so we can buy the components and build the circuit
Can igbt varrry voltage according to gate voltage
want to chop AC voltage using IGBT...basically using generic buck converter circuit.
Can a bridge rectifier across IGBT be helpful so that IGBT always sees a voltage drop across its drain and source and AC voltage can be easily switched?
Hi,In a MOSFET application in high side configuration, what are the pros and cons to using a charge pump to drive the gate? Is it better to use the HCPL3120?
Good video sir, I have designed and assembled similar circuit to drive a full bridge igbt. The circuit works fine below a bus voltage of 70 volts but above 70 v my one side igbts blown out several time. Can u please share what's the problem.
This is great! Explained quite nicely. So, for a DC to single phase AC converter, you’d need 4 or two of these? (Sorry if you already mentioned it, didn’t have time to watch the whole video)
Tnx for the video can I measure voltage of that output pin of opto coupler with multimeter
iv added your channel to my channel, channel's play list!!
many thanx
anthony
Can you recommend an already made PWM that will fire the HCPL-3120 optocoupler at the right voltage? I am using the TL494 KA7500 Driver Board but it will not fire the led's in the optocoupler.. It seems to only put out .65 volts AC at the signal when connected and around .88 volts AC when it is not connected to the board.. I need the input of the PWM to be 12v. I am building a full bridge inverter.
A TL494 Should have no problems driving the LEDs. I'm not sure I completely understand...what is your input voltage to the TL494? It should be at least 5 volts.
12 volts is the input voltage. The TL494 has a Feed + and a Feed -. It is my understanding that if I put a potentometer on those feet, that I can adjust the voltage output of the board. But, when I use a potentometer, it does not increase the voltage output of the signal. When I ground the Feed - it does not increase the voltage output of the signal. When I use a AC probe across the PWM 1 and PWM 2, it shows a .6 volts. When I use a DC probe across the PWM 1 and PWM 2, it shows as 2.5 volts.
UPDATE .....It will now fire the led, but, the isolated voltage supply (15v) will only put out 5 volts signal to the IGBT. This will not fire my 15v gate of the IGBT. Would that indicate that I need a higher voltage at the LED to trigger the opto? Or is the opto a only ON or only OFF.
please tell me about "Resonant power inverter controller"
very very well explained.... thanks a lot...:)
hello there, what resistance did you use for the 3120 led? thanks.
Great vid and nice easy to understand explanation. Thanks for posting. :)
I have one question wants to ask. Can MOSFET also applying -5V to 15V switching techniques as you mentioned in (3.54 minutes). To improve the Full bridge switching performances? I'm looking to hearing from your reply. Thank you to contribute this tutorial.
Yes you can use Negative gate drive, or negative gate bias to hold a
MOSFET in the off state. This doesn't necessarily improve switching but
it does ensure that the MOSFET won't be accidentally triggered on by
noise or interference. Thank you for watching
Thanks for your explanation
John nji
You must repeat this video with better sound quality and better video quality, good job
very educational program,
Wow. This is very cool! I wonder if you could design a schematic for me since I'm deaf? I'm going building a higher voltage in future. You're good teach btw.
Hi, I 'm using a irf4bc40u IGBT used in the high side , which allows the passage of a current from the discharge of a capacitor on a inductor , which controls the gate of the IGBT receive pulses of 15V for 400 microseconds every 50 milliseconds , the problem is that the IGBT heated too fast , you think with this you can solve that problem explain , greetings and thanks in advance .
+Moises Perez IRF? Thats a mosfet. Did you mean IRG? How many amps was your load? The amp rating on the spec sheet assumes you are providing sufficient cooling.
I want to make induction machine to temper the iron. Could you help me with all schematic. Thank u
Hey, i have a question, so after few of IGBT, i dont have a real answer of that
I'm just asking if the SKM145GB123D can switch at 120~ Khz, and what's the maximum frequency ? thx! (i'm noo for the datasheet check)
First thank you but i have problem when connected same type of igbt you use how i controlling power circuit 400v by use 555timer low voltage control where you have G: CONNECTED TO CONTROL SIGNAL AND E: CONNECTED TO >>> You have tow E one for power control second one to control circuit i would like explain this point
is it possible to get AC square wave using only one IGBT?
You can technically, but it is not recommended. You can drive an inductive load with one IGBT. The problem is the turn off voltage, it spikes too high and the IGBT breaks down so you can only use very low voltages.
subcooledheatpump You use free-wheeling diodes to clamp the voltage spikes.
Great video Dude!!!
I have some problem It would be very nice if you could help
I am using same Gate driver circuit except I am not using any snubber .I am using single switch as chopper for Dc Voltage and Load is Bulb. I am varying Duty Cycle using Arduino .
Now the problem is when I apply 220V DC my circuit works fine Bulb dims as I decrease duty Cycle. But when I apply Nearly 120V (or lower) I can control the dimming but BULB dont switch off at 0 duty cycle.
Try this, Apply 220 VDC to your circuit as you would normally, except this time short the IGBT gate and emitter terminals. Do you still have the same problem?
I have some q41 motor uesding a toshiba mp6750 I need to use this kind of igbt to control the motor I need a simple circuit to control it what do you recommend
Why are igbts named Q1 to Q4
Hi guy, I am building buck/boost converter with NGTB50N60 IGBT. The last circuit driver with two 555, is it the best to drive the gate of IGBT ?
You really need a good gate driver like HCPL-3120 to drive the IGBT gate properly. Also PWM should be done with a better setup than a 555. For example, a triangle wave generator and a comparator will give much better results. I just show the 555 here to demonstrate that the gate driver will work with a 0 to 5 volts input, which is basically what a 555 outputs.
Hcpl 3120 can drive fga60n60 igbt
I think I blew up my cheapo IGBT trying to use it for a supercapacitor spotwelder .-. ....... so time to stock up on information :3
what are the resistor values please and thankyou
The resistor values for the output really depend on the IGBT you want to drive. This specific gate driver can only output a peak current of 2 amps, so if the input is 15 volts, you can't go any lower than a 7.5 ohm gate resistor. As for the LED, that depends on the signal supply voltage. I think I usually use a 1K resistor in series with the LED when the signal supply voltage is 5 volts
Thanks so much I am looking to drive mg200q2ys40 igbts....i was lucky enough to acquire 24 of them from a set of MRI drivers for 30 bucks :). I am first looking to drive an xrt much like high1voltage1rules. Then move on to perhaps a 3 phase converter an induction heater and a sstc. I'll try out the 7.5 ohm and the 1k. On behalf of all of us interested in igbts I thank you for all of the help you have given us. Also if you could shoot me your email at andrewboerder@gmail.com I would greatly appreciate a more direct line of communication with you and your expertise, thanks and have a great day!
Sincerely,
Andrew
how to calculate the peak gate current requirement of the driver if i am using a sk30mli066 gate driver module
am suppling 15 v in vcc ,but output am getting in 13.2V for 3120 optodriver.any reason?
Is it possible to step up voltage using ( mosfet / igbt) and at the same time step up current for example step up 10 volt to 12 volt and output current 600 amp
You can use either MOSFET or IGBT to create a boost converter to boost up the voltage, or a buck converter to reduce the voltage. Power stays the same, minus some switching losses. So the output current will depend on the ability of the power source
I admire your understanding of electronics and wish I had it myself! Mechanical things have always came natural to me, but electronics is still a hard work in progress! Did you go to school for this?
Hi
I need some help An a IGbT I have a q41 quickroton motor it has an igbt in it need to use a driver to run the IGBT speed controller it's a sewing machine servo motor .thank you
How can ı connect IR2110 and IXSH25N120A IGBT in terms of pin connection for buck converter switch?
this (HCPL-3120) can use in 3-phase inverter? (Adjust frequency 0 to 100 Hz)
which one bestter in 3-phase inverter (HCPL-2120 TLP250 IR2133 or else)
thank you.
HCPL-3120 can be used in a 3 phase inverter, however if the bus voltage exceeds about 400 volts, then you will likely want to use HCNW-3120 for the high side IGBT gates. This is because HCNW-3120 has a higher isolation voltage rating. Thanks for watching
how much EMF did you get exposed to?
+LAHernandez From this stuff, negligible. Nothing he does here will give off any quantity of ionising radiation.
+LAHernandez Probably no more than you got from your PC while typing your reply to me. IGBTs switching at a few kHz do pretty much nothing to the human body. That is, unless you touch the DC Bus terminals, that would probably wake you up pretty fast.
How important is that 0.1 microFarad capacitor, the smallest I have on me is 1.0
You could probably get by with the 1.0 just fine for most applications
Pode me enviar o circuito deste vídeo?
Excellent video man... Thanks.
Can I use this gate driver IC when I'm using Full bridge IGBT as controlled rectifier
+Basil aljamal As long as the power supply for the gate drivers is properly isolated, it shouldn't be a problem
every day im so sure .. ne 555 it is in every where... please would u share schematic diagram with us ? 😬😬😬😬
Schematic for know more
woww..It is too good brother.:).thank you so much.:)
Hi Buddy,Can you help me to sort out an issue on a Chiller Unit whose gate driver is lock out on circuit 2 only .IC 031-02066-001 is used .I just replaced the IGBT card and now the gate driver is locked out on the other pcb card.Thanks
Not sure I completely understand.. Did and IGBT fail and you replaced it? If so, you will likely need to replace the gate driver. Usually, but not always, when IGBTs fail they take the gate drivers with them
Hey mate. Just found your channel, awesome. Theres some crazy X-ray transformer chaos on my channel, IGBT half bridge etc.
Steve
Dear sir
What is the value of IGBT using switching circuit , to ON for Vge=4v~5v and its output is Vce=250v &above and Ic=Ie=3A &Above and its switching time below 10ms.
Thank you.
Great