Hi,
I have the circuit like this....and have the problem of overshoot...could anybody recommend me how can i configure the circuit to remove the overshoot.?

 

clamping diode?

 

Hello,

Is the ground side of R5 connected?
I see an open line between R5 and the ground symbol.
If R5 is not connected to ground, there will be no attenuation.

Bertus

 

I was just trying out different things....the circuit works without the R5 connected....

and clamping diode would definitely not seem to solve the problem

 

Why do you have all those inductors in your circuit?

 

Why do you have all those inductors in your circuit?

Those are the parasitic inductances due to the connecting wire

 

Looks to me that your feedback loop is under-damped (google it).

Have you tried to slow down the rise time (slew rate) of the input voltage to see if it goes away?

Have you tried changing the values for R3 and C1?

Have you read the datasheet thoroughly? Read it again. Try the 'capacitance on the inverting input' section. Verify there's no parasitic capacitance there. Also read the 'slew rate' section - this may be your problem. Still have the problem? Read the datasheet again!

 

When you measured your signal with the oscilloscope was the probe properly grounded?

 

I was just trying out different things....the circuit works without the R5 connected....

and clamping diode would definitely not seem to solve the problem

There is a finite loop speed. How fast is the op amp?

I can't see time markers. How wide is the overshoot transient?

Forcing the rise time slower probably would reduce the overshoot.

The main problem is the inductor that the FET is driving stores energy. Even when you cut drive to the FET, the inductor's energy has to dump.

 

Post your .asc file.

 

When you measured your signal with the oscilloscope was the probe properly grounded?

nope..it wasnot ope

 

Post your .asc file.

https://www.dropbox.com/s/g9ujye2au39e2fm/MODEL_2 - Copy_RONDEBUG.asc

 

Ground the scope probe (not just the scope) and you will observe a huge difference.