Here is why MOSFET drivers are sometimes essential! || MOSFET Driver Part 1 (Driver, Bootstrapping)

Thank You

Thanks for the very useful information

Hello would using a PNP/NPN pair (to amplify signal from IC) be as helpful as using a dedicated driver?

No need for special drivers. I converted m🎉y small-signal multivibrator into a high-power version with power transistors, it has no problem at all driving three paralelled Mosfets, and easily and quickly supplies the parasitic gate charge with little delay.

I cannot find a reverse voltage protection circuit to put on a 36 volt power supply

I have seen and love a lot of your videos. Lots of great knowledge and experience. Could you please consider giving an overview before going into the topics and consider spending time on more circuit diagrams. Your examples are great but certainly for me as a newbie, it would help.

Thanks. I now know how to design the circuit.

Man muss leitende Mosfets und sperrende Mosfets mit zusätzlichen Eigenschaften unterscheiden.
Damit die Sperrenden normal schalten, brauchen sie einen Gate - Source Widerstand. ( ab 1 Kohm , meist 5-10 Kohm, manchmal auch mehr)
Das ist doch kinderleicht.

Sorry, but aren´t mosfets (and IGBTs) purely voltage-driven ??? Why does it then matter how high its gate-current is, to turn on faster ??? Of course I get it, that current has vast infuence on the turn-on-speed, but in principle, the igbt would fully conduct even if the trigger-signal was just 1mA, but it´d take days instead of nanoseconds instead, in order to fully conduct, right?

sir can you make a 12v dc to 220 v ac inverter ciecuit using ne555 ic
it will be a huge help to my college project

What do you think about using the ubiquitous 555 timer as MOSFET gate buffer?
Pin 4 is the input, 6 and 8 go to VCC, pins 1 and 2 go to ground. 5 to 10 ohms between pin 3 and the gate.
It's not my idea. Google electronicdesign lm555 makes inexpensive power driver.

Would this work as a stepper motor driver? Seems like you made it much faster with boot strap circuitry.

Mosfets make the world go around.

I am blown away of how professional this is...

loads of information!!!!

great explanation sir. now i can uderstand mosfet more

you should open your own school

Your discrete MOSFET driver is very sophisticated, normally 1 Transistor with a pull-down Resistor is in most cases enough.
We would say: Mit Kanonen auf Spatzen schießen

Can you tell me what gauge wire can I use to solder the pins

I've built various circuits based on MOSFETs but all the time Optocoupler based circuits works best for me and also would love to share that it's the only cheap, hassle-free and efficient way to drive the MOSFETs 😄

Couldn’t you just use capacitors in between the arduino and mosfet?

Bravo.........about how........e wire drivers.....no hum drivers........?.........controler up to 100v dc balancer capastor......for bank.....cheers

Wow awesome. So concise and understandable.

I'm planing to use a mosfet as a relay switch replacement to arduino reply module.
Is it possible to use mosfet as a switch with a 24v load?

"We want to keep [power losses] as small as possible" he said, limiting the LED current with a big-ass resistor that's dropping 0,62 watts

Hi @GreatScott could you please name a few low Power battery operation Application mosfets especially for 3.3Volts Thank you

Hi Scott i have a problem a Samsung front loader washing machine is locking and everything but the only problem m having with it won't engage with the motor to start

You are really Great,mr.Scott! thank you for the video.

How can we make the gate pin negative 9 volts while the MOSFET stops conducting electricity? Help me make a video thank you.

could you suggest an alternative gate driver due to shortages?

Driving a low side switched MOSFET is pretty simple in most cases. The task becomes far more challenging when the MOSFET is high side switched especially when Vdd is dynamically changing. The gate drive circuit must also float to maintain the correct VGS delta to stay within the device voltage specs and still supply enough current to switch an inductive load at 20KHz for example. The challenge compounds itself when the MOSFET must be held in a conducting state continuously where PWM or any frequency cannot be used to drive the gate on a given load. Lastly you would want the gate driver to be capable of delivering 3-5 Amps of current so as to charge the gate capacitor as fast as possible. For MOSFETs with very low RdsOn this can be a real challenge. I had to solve this problem, it sure was an interesting design. There were no pulse transformers used.

You know what, there is something therapeutic and calming about the way you speak. I've been subscribed for years and just had a moment.

fantastic video, extremely well explained, so it's perfectly understandable for a semi-layman like me :-) Thanks!

F.R.E.A.M.

Could you advise if possible to buy or buy and rebuild power switch module,based on mosfet, to switch battery power at about 20A and 42v and control it with rc pwm signal

thanks for amazing infos. I have a question, Is it possible to control the speed of an ac motor via pwm? i have a machine that has 12v dc brush less fans and I want to replace them with ac motors, how can I convert pwm from controlboard to control the speed of ac motor? I know I must use mosfet for this job but I have no clue to how to do it.

In low-frequency applications (~150Hz), and since I=dQ/dt, can the mosfet gate be driven by lower rise/fall time pulses to lengthen dt so that current draw can be reduced?

buen video

You truly are great Scott, cause this video was great!

The world's best teacher

I thought i would use a mosfet instead of bjt to turn on or off the battery that powers wifi router during power outage.
The purpose is to automatically turn transistor off, hence the router, in case of undervoltage of the battery. But mosfet is too complicated. Gonna stick to bjt. A couple milli-watt power loss is better than a headache during design process i guess....and mosfet is 3 times more expensive than bjt. Also, i am just studying electronics engineering, so i dont know if my method is correct. But it should get the job done.

Thanks for this great video.

Getting a real Marco Reps vibe here! Great stuff, thank you!!!