Hello All,

I am working on a project where I have 110V AC/DC both from same point sometime its 110V ac & 110V dc.

Now the task which i have need to convert this input as 13.5V pure DC because our device works only on 13.5V dc.

Please suggest me some IC or some way to overcome from this.

 

Meanwell's power supplies will take AC and DC inputss:
https://www.rapidonline.com/mean-we...9_1781499093_28a5e64abd276a052ef06cc19e4456fe
It's a poor device if it is that particular about the supply, but if it won't manage on 12V or 15V, then you need to get the 15V and regulated it down with a LDO regulator.
You didn't say how much current it needs? Could be 10mA could be 100A, no idea.

 

I am working on a project where I have 110V AC/DC both from same point sometime its 110V ac & 110V dc.
Now the task which i have need to convert this input as 13.5V pure DC because our device works only on 13.5V dc.
Please suggest me some IC or some way to overcome from this.

$5.13
13.5V 1.5A Switching Power Supply Board AC-DC Convertor
Step Down Power Supply AC85-240V to 13.5V 1.5A
Buck Power Supply Module
(It works from 110 VDC too)
_____

 

Please suggest me some IC or some way to overcome from this.

Do you want to design this or buy it?

 

If you only need 1.5amp, then this may solve it!
Amazon

• Specifications: 100-240V 50/60Hz input, DC 13.5V 1.5A output, 5.5mm*2.5mm connector size.

 

aliexpress.us:
---------------
AC 100-240 V
Output 13.5 V, 2 A
$1.78
Free shipping

 

It looks to me like DANKO has already shown what I would also suggest, in post #3.
A mains voltage rectifier followed by a DC to DC stepdown regulator module.

 

It looks to me like DANKO has already shown what I would also suggest, in post #3.
A mains voltage rectifier followed by a DC to DC stepdown regulator module.

Except the one shown in post #5 is same rating but enclosed?
But #3 is cheaper

 

The two above specify AC input and are likely step down transformers that will not work with DC input.

 

The two above specify AC input and are likely step down transformers that will not work with DC input.

If they specify 100V-240V then they are most likely wide-range input flyback converters, if so they would incorporate a rectifier and APPEAR to be suitable for use on DC.
However, the current drawn from the mains will be at its greatest at 100V AC, and that current goes through all four diodes of the bridge rectifier.
If connected to DC, whilst the flyback part will work without a problem, the current now goes through just TWO diodes of the bridge rectifier, which may not be rated accordingly.
So I agree with @BobTPH here, if it doesn't say DC on the label, don't use it on DC, even if you think it will work.
The Meanwell supplies I mentioned somewhere near the beginning specify AC or DC use on their datasheet.

 

If reliability and low supply noise on the output matter. go with an HONEST seller.
AND, think about the question of isolation of the 13.5 volt output from the mains feed connection. For some applications, isolation of both sides of theoutput from the mains matters. For others, it does not matter. WE DO NOT have that information.