Hello,
I tried simulating MOSFET gate driver per below schematic and it is not working.
Does anybody having any proposal to build up mosfet gate driver ?
Since this battery driven circuit so there should not be any power consumption during if the machine is idle.
MOSFET : http://aosmd.com/res/data_sheets/AON7524.pdf (we can take this into consideration- i did not get this part in ltspice)


Regards,

 

Please do not use colored fonts. It's distracting and makes the words hard to read.

How is it "not working".
When I say my car is "not working" does that tell you much?

It seems to work for me (below):
I used a substitute MOSFET as close to the one you selected that I had in my model file.
I reduced R1 to give the stated motor current (is it really 15A @ 3V?).
I also added an input stage to give a full 3V drive, since 2.5V is quite marginal for the gate voltage to fully turn-on the MOSFET.

 

Please do not use colored fonts. It's distracting and makes the words hard to read.

How is it "not working".
When I say my car is "not working" does that tell you much?

It seems to work for me (below):
I used a substitute MOSFET as close to the one you selected that I had in my model file.
I reduced R1 to give the stated motor current (is it really 15A @ 3V?).
I also added an input stage to give a full 3V drive, since 2.5V is quite marginal for the gate voltage to fully turn-on the MOSFET.

View attachment 233198

Hello,
Thanks for your reply ,
Since this is push pull Gate driver so why voltage at gate is not 3V in your simulation and it is showing around 2.5V.

Thanks again !

 

Since this is push pull Gate driver so why voltage at gate is not 3V in your simulation and it is showing around 2.5V.

It is very dangerous - always be asking instead of thinking.
Your brain (if exist) will degrade (if not yet).
Read https://www.electronics-notes.com/a...nsistor-common-collector-emitter-follower.php

 

Since this is push pull Gate driver so why voltage at gate is not 3V in your simulation and it is showing around 2.5V.

As Danko's reference notes, look at the difference between the output DC level of an emitter-follower versus the input DC level.
That will answer your question.