MOSFET for buck Convee

[Max01800]

I need to design a buck converter with Vin=12 V, Vout=5 V and Maximum Iout=10 A. Do you have any suggestions on how to choose the mosfet and the diode ? And specifically, what kind of information I should look for on the datasheet?

 

[KlausST]

How I do it:

(The semiconductor manufacturer want to sell their products, thus they support you..)

* Go to a SMPS IC manufacturer internet site
* find the interactive search. example: https://www.analog.com/en/product-category/step-down-buck-regulators.html
* input your design requirements
* check results (mabe refine your search)
* open datasheets (a couple of them just to find out what suits you most)
* follow the part selection guidelines

Clean, straight forward, never failed with this. No reason to re-invent the wheel.

Klaus

--- Updated Jan 10, 2024 ---

And specifically, what kind of information I should look for on the datasheet?

sadly ... you need to browse through the whole datasheet. At least the chapter headlines.
We don´t know which part of the datasheet is how important for you. It may be heat spreading, surge handling, pulse load handling, cost, availability, part count, PCB size...

 

[D.A.(Tony)Stewart]

Any of these should work.

https://www.analog.com/en/parametricsearch/11491#/p5573=min|11&p5574=12|max&p5347=min|5&p5357=5|max&p5349=10|120&qsfv=vinmin|11_vinmax|12_vout|5_iout|10_button|_vout2|_iout2|_vout3|_iout3|&p5362=Buck&sort=s25,desc

Pick a part based on IC price availability, choose tradeoffs , run design

Then run simulation for your expected performance , Step load overshoot, ripple, Heat rise from Power loss, etc. Change parameters in advanced, rerun until it meets all your design specs for DC, AC, $$ load regulation, Overshoot, heatsink size, board size, ambient temp rise, etc.