Universal AC/DC LM2576 Buck (step down) adjustable Power Mod

Guido
Posts: 4
Joined: Tue Aug 05, 2014 2:47 pm

Universal AC/DC LM2576 Buck (step down) adjustable Power Mod

Postby Guido » Tue Aug 05, 2014 3:03 pm

Hi there,
It's nice to be here for the first time :) I'm not an electronic expert but i like to make some project on my own, so I just bought an EPS-LM2576ADCVR and i would like to know if it is possible to obtain from this module a 5V Output DC and how can I adjust it to obtain my voltage. Thanks a lot.

Tech_Marco
Posts: 4372
Joined: Mon Jun 15, 2009 3:00 pm

Re: Universal AC/DC LM2576 Buck (step down) adjustable Power

Postby Tech_Marco » Tue Aug 05, 2014 4:16 pm

You need to input 6V or above in order to get 5V from this module
The input could be DC (6~38V) or AC ( 4~28V)


Marco

Guido
Posts: 4
Joined: Tue Aug 05, 2014 2:47 pm

Re: Universal AC/DC LM2576 Buck (step down) adjustable Power

Postby Guido » Wed Aug 06, 2014 3:59 am

I have 20V AC Input and I need 5V DC Output...Sorry but i didn't understand how can I obtain that voltage on Output. Could you please explain it?

Guido
Posts: 4
Joined: Tue Aug 05, 2014 2:47 pm

Re: Universal AC/DC LM2576 Buck (step down) adjustable Power

Postby Guido » Sun Aug 31, 2014 6:36 am

Hi,
My order is arrived so I decided to test it immediatelly. The Output voltage is just a bit lower than the Input voltage.
Let's suppose the Input of EPS-LM2576ADCVR is AC: will I obtain DC voltage on Output? How can I set the voltage?

I am sorry for my profound ignorance about it. There is a component on which is wrote W503/60 with a little screw (as you can see in the img below) so I thought it could be the element useful to set my voltage but turning it nothing change from the Voltmeter. Should I repeat tests? Thanks for the help if someone can reply :)
Image

Tech_Marco
Posts: 4372
Joined: Mon Jun 15, 2009 3:00 pm

Re: Universal AC/DC LM2576 Buck (step down) adjustable Power

Postby Tech_Marco » Mon Sep 01, 2014 3:49 pm

If you INPUT is AC~, then apply the AC~ to the "~IN ~IN"
If the AC say 9V, then the DC after rectifier circuit would be 12.7V
So, the output can be adjustable from 4V~11V by using the VR (the blue module with a screw on the top)


Marco

Guido
Posts: 4
Joined: Tue Aug 05, 2014 2:47 pm

Re: Universal AC/DC LM2576 Buck (step down) adjustable Power

Postby Guido » Tue Sep 02, 2014 8:52 am

Amazing! Thanks :D .


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