20V/3A Buck in PC

Hello Given,

  I suggest you start with WEBENCH, Power Designer (ti.com)  then filter/sort by what is most important for the design.

For the parameters you specified, there are 154 possible solutions, sort by: 

Let's SORT by smallest footprint for the PC: 

Or sort by Lowest BOM cost: 

as well, you can use the filters to reduce the number of designs: 

Once you have the best fit for the application, we can direct any further questions to the Product Group for that device. 

Regards,

~Leonard