DC/DC Converter

[somaye]

Hi all, I should design a DC-DC coverter with LTC3412A for a FPGA board, this could provide 2,5 V DC output from 5 V DC input (the picture is uploded). But I have no idea where to connect an AC singnal and if it is even needed?
Secondly, there is a problem with the current in the inductor, I do not know how to fix it? refer to the figure


Thanks in advance
With best regards

 

[ronsimpson]

But I have no idea where to connect an AC singnal

What AC signal?

there is a problem with the current in the inductor

What problem?

It helps to post your circuit.
I attached a circuit that seems to work. 2.5V out.

 

[christinescoms]

Hi all, I should design a DC-DC coverter with LTC3412A for a FPGA board, this could provide 2,5 V DC output from 5 V DC input (the picture is uploded). But I have no idea where to connect an AC singnal and if it is even needed?
Secondly, there is a problem with the current in the inductor, I do not know how to fix it? refer to the figure


Thanks in advance
With best regards


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garage flooring phoenix View attachment 136292

Hi.

I live on a narrowboat and live off-grid. My power comes from 12v batteries.

I am trying to power my shunt-based 12v ammeter using a dc-dc converter. I bought 3 from STK on Amazon. The blurb says that they are 12v -16v input to 12v output. These would be ideal. However, when I connect one up with an input of 13.21v I get 13.56v on the output. This happens with all three converters. Am I doing something wrong?

 

[danadak]

Does the converter you bought have a minimum load requirement to stay in regulation ?

Also does it have a minimum V delta in to out to stay in regulation ? eg, you input V too low ?


Regards, Dana.

 

[ronsimpson]

I bought 3 from STK on Amazon.

Please attach as much information as you can find. Where is the advertisement?