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dc-dc converter output current limit programming

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franticET

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Hi,
i'm looking for a buck converter or other kind of regulated dc/dc converter able of mantaining a constant output voltage of 48V, with a 40V to 60V input Vcc, and an output current programming pin able to source up to 1A.

Is there any IC (Linear Tech or Texas) that satisfies these requirements?

Is it possible to realize it?

Any ideas or help will be useful!!!

Thanks a lot
 
Since your input voltage range extends both above and below your output, you need a converter that will both buck and boost.

The Texas instruments LM5118 will do that.
 
Look up cuck converters - I think that will do what you want.
 
Here's a search result for the buck/boost type of converter you need.
 
an output current programming pin
If the output voltage is fixed at 48V the output current will be determined by the connected load resistance, not 'programmed'. Do you mean a programmed current limit?
 
In this kind of converter is the voltage constant by varying the current?
For a load such as a battery being charged, the current will vary if the voltage is kept constant, or the voltage will vary if the current is kept constant.
 
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