No.

 

If i just connect all the components in air with solder joints, how likely is the MOSFETs going to fail again?

 

No, because a 1N4148 is a signal diode. It should be selected for the associated voltages and currents. And still you will need to change the wiring from that prototype arrangement to an arrangement with much less wire inductance and resistance.

What about 5402 or 5822?

 

Neither is a fast-recovery type.
Here are some examples.

 

Neither is a fast-recovery type.
Here are some examples.

Where in the datasheet I can find if it is a fast recovery type or not?
Here is a link to fast recovery type diodes, is this okay? Because you've given a link to smd package and it will be hard to find those here even if their through hole package is available.

 

https://www.diodes.com/products/discrete/diodes-and-rectifiers/rectifiers/fastultra-fast-rectifiers/

 

If it's through-hole types you want, here are some fast-recovery examples.

 

Note that all Schottky diodes are fast recovery.

 

I'll give an update once i have the new MOSFETs and diode.

 

Then D3 also needs to be changed?

No, D3 is a polarity reversal protection diode, it is not a part of the fast switching circuit. It stays forward biased unless the power connection gets reversed.

 

I have found PS1010R diode. Datasheet doesn't says it is Schottky diode, is this okay?

 

I have found PS1010R diode. Datasheet doesn't says it is Schottky diode, is this okay?

Based on the specification sheet it looks like it should work. That still leaves you with the problem of the breadboard wiring resistance and inductance.

 

That still leaves you with the problem of the breadboard wiring resistance and

For that I'm working on this.
Soldering every component in air to test. Hope this helps.

 

One more thing that was not mentioned before is that most computer power supplies demand some load be connected in order to function. Your intended output voltage is never mentioned, nor the current. But it seems that you should have a load connected so that the circuit can function normally, since a constant load is a basic part of computer supply operation.
AND, please tell us what the intended load voltage and current are, since that does matter.

 

One more thing that was not mentioned before is that most computer power supplies demand some load be connected in order to function. Your intended output voltage is never mentioned, nor the current. But it seems that you should have a load connected so that the circuit can function normally, since a constant load is a basic part of computer supply operation.
AND, please tell us what the intended load voltage and current are, since that does matter.

Voltage between 18 to 20 volts and max current of 7 to 10amps.

 

This will be used to power a CC/CV buck boost converter for a bench power supply. And also a 12v fan if needed.

 

I have got the MOSFETs and not I'll retry. The FETs are around a 60rs each roughly a dollar. So i want to know will it blow again? I know this is a silly question but those money i spend are saving from my pocket money, so i want assurance, or else I'll wait until everything is right.

 

So i want to know will it blow again?

We have no way of knowing. Stray inductance and capacitance can play tricks with MOSFET circuits.

 

We have no way of knowing. Stray inductance and capacitance can play tricks with MOSFET circuits.

How to remove this?

 

Complete removal is impossible, but minimising component interconnect lengths helps. Your post #33 circuit has a lot of excess wire, which contributes unnecessary inductance and will act as antennas for picking up interference from the environment.