looking for buck converter ic

[Pradeep_Kumar_Achu]

i am looking for buck converter ic simulation model. that buck converter specification is 265V input and 24V, 3.4A output. anyone can give solution for this qustion?

[Sharanya_R]

In Multisim 12.0 we have a Buck Converter component available, in the Miscellaneous Group, under the Buck_Converter Family.

If you double-click on the component, and select the Value tab, you have the option of specifiying the filter inductance, filter inductor ESR, and switching frequency.

[t.stud]

I want to build a bulk convarter with an

input volt= 24v

output volt= 5v

current in the load=1amp

Fsw= 100KHz

Irpp=200mA

Vrpp=5mV

 what value of L AND C , R can i use, becuase i made some calculation already for the values and i still get a different volt at my output when i simulate. 

which IC (containing PWM and driver) can i use.

 or better whats your advice on the IC