could you advice me some complementary mosfets?

You would probably be better off to use two identical N-ch MOSFETs and a high-side driver IC.

It could also be made to work with N and P channel MOSFETs, but an integrated driver IC would certainly make things easier.

But, you haven't given any particulars so far about what kind of power output you're expecting.
[eta]
OK, 5W output, way back in the beginning of the thread.

What are you going to use for an inductor?

 

Hello,

Already in post 8 I gave you a link to the EDUCYPEDIA page on amplifier classes.
On this page are two tutorials from IRF :
http://www.irf.com/product-info/audio/classdtutorial.pdf
http://www.irf.com/product-info/audio/classdtutorial606.pdf
In these tutortials they are using special drivers for the fets, like SgtWookie suggests.

Greetings,
Bertus

 

i am going to use 60uH...but my circuit was designed according to N channel and p channel mosfet...i wanna change only mosfets...i need complementary N and P channel mosfets

 

Hello,

There are even mosfets with a N and a P mosfet in one housing.

Greetings,
Bertus

 

thank you bertus but in the board mosfets are separated...so i need two different mosfets but they must be complementary

 

what do u think for IRF9530 and IRF9520N

 

If they need to be complimentary, choose IRF520 and IRF9520, or IRF530 and IRF9530. In both cases, the 5XX device is N channel, while the 95XX device is P channel.

 

ok thank u