So I want to produce 5 V and 2 V from 12 V. My plan is to use LM2596 buck converter.

I want the output to be 2W-10W. However, it does not give me enough current.
When it is 12V to 2V, the output current is about 5mA. What may the issue be?


This is for a project. Hence, it is not for powering anything. The load is simply a resistor.

Thank you!

 

I suspect D17 is in backwards, but that is a complete guess.

Got a schematic to post? Got picture of your build?

 

Is this a home work or personal practice?
Wrong diode, wrong conductor?
Please show the bread board or pcb with parts, some photos.

 

This is like a homework.

I did not put anything around my buck converter. I simply feed 12 V in to the converter. There's nothing else

 

http://www.ti.com/lit/ds/symlink/lm2596.pdf

Attached is a link to the datasheet for LM2596. It shows a typical circuit layout for this converter on the first page. You will have to provide the external components that are shown for your switching converter to work. This is not like a linear regulator that simply dissipates unused power as heat.