Poll

Which one should i use for a power supply module?

http://www.ebay.com.au/itm/dc-dc-cc-cv-buck-converter-step-down-power-supply-module-7-32v-to-0-8-28v-12a-re/121793415346?hash=item1c5b7408b2
3 (100%)
B3603
0 (0%)

Total Members Voted: 2

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Author Topic: Step-down Power Supply Module  (Read 3664 times)

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Offline skillz21Topic starter

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Step-down Power Supply Module
« on: February 07, 2016, 10:37:59 am »
Hey everyone!
 I was browsing through ebay when i saw this:
http://www.ebay.com.au/itm/dc-dc-cc-cv-buck-converter-step-down-power-supply-module-7-32v-to-0-8-28v-12a-re/121793415346?hash=item1c5b7408b2
i am looking for a variable power supply. will this do the job? if not. what does this do? i am really interested to find out!
Thanks! :-+
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Offline ali6x944

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Re: Step-down Power Supply Module
« Reply #1 on: February 08, 2016, 05:59:34 am »
Do u have any schamatics?
Or the name of the smps controller?
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Offline mij59

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Re: Step-down Power Supply Module
« Reply #2 on: February 08, 2016, 06:24:24 am »
I tested the version without the cc function, it preforms rather good.
The module uses the XL4016 from XLSEMI, the current rating in the ad is bit too optimistic, 6A output current is more realistic.


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Offline skillz21Topic starter

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Re: Step-down Power Supply Module
« Reply #3 on: February 14, 2016, 10:20:49 am »
So can it be a variable power supply?
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Offline han

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Re: Step-down Power Supply Module
« Reply #4 on: February 14, 2016, 10:36:30 am »
It's have limitation of minimum voltage >0.8V
You can mode with op amp and couple of resistor trough.So the voltage can be set from 0V
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Offline skillz21Topic starter

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Re: Step-down Power Supply Module
« Reply #5 on: February 14, 2016, 11:04:43 am »
Quote from: han on February 14, 2016, 10:36:30 am
It's have limitation of minimum voltage >0.8V
You can mode with op amp and couple of resistor trough.So the voltage can be set from 0V
i am not interested in getting voltages under one volt. so what is the maximum and is is very sensitive and is it reliable?
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Offline skillz21Topic starter

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Re: Step-down Power Supply Module
« Reply #6 on: February 14, 2016, 11:05:46 am »
Quote from: ali6x944 on February 08, 2016, 05:59:34 am
Do u have any schamatics?
Or the name of the smps controller?
no i havent bought it yet, i am thinking of buying it.
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Offline thejoggingmat

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Re: Step-down Power Supply Module
« Reply #7 on: February 14, 2016, 02:44:53 pm »
If you are looking for something to power up your hobby electronics, I will recommend the B3603 adjustable power supply module instead. Go search on Google. Very hackable, precise and inexpensive for such a module. I bought a few for $8 a piece on eBay some time back, shipping included. The board is rather well built as well which is a bonus.
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Offline skillz21Topic starter

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Re: Step-down Power Supply Module
« Reply #8 on: February 16, 2016, 10:03:38 am »
Any other suggestions?
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Offline simpson

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Re: Step-down Power Supply Module
« Reply #9 on: February 17, 2016, 03:50:02 am »
I bought and built a power supply kit from these folks:
http://www.engineeringshock.com/blue-power-supply-with-display-lm2596.html

The kit I bought was a different model using a different chip but they don't sell that one anymore. Anyway the kit quality was very good and the finished PS I bought works well. This one looks good too. It seems sufficient for hobby use.
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Offline skillz21Topic starter

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Re: Step-down Power Supply Module
« Reply #10 on: February 18, 2016, 10:40:48 am »
made me laugh when i saw this:http://www.ebay.com/itm/DC-DC-Buck-Converter-Step-Down-Module-LM2596-Power-Supply-Output-1-23V-30V-DT-/262105259862?hash=item3d06b0df56:g:BxkAAOSwI-BWJ6ON
what is this? this is literally $2 aus dollars.
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Offline skillz21Topic starter

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Re: Step-down Power Supply Module
« Reply #11 on: February 20, 2016, 09:07:09 am »
what are the differences
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Offline skillz21Topic starter

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Re: Step-down Power Supply Module
« Reply #12 on: March 04, 2016, 10:33:50 am »
Hello?
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Offline Asim

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Re: Step-down Power Supply Module
« Reply #13 on: March 04, 2016, 10:45:47 am »
As suggested above, buy b3603 as it has a fairly good current limit function which is a must for a power supply
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