[Milsurplus] DC-DC Buck/Boost Converter Regulation

[Peter Gottlieb]

Boost converters frequently won't allow their outputs to go below their inputs.  
You want a true buck-boost if you want to operate a 12 volt load from 8-whatever 
voltage.  It's not completely clear the first one does that.

How much regulation do you really need?  There are specs for most of those 
devices; they are all based on IC regulators and usually don't deviate much from 
the circuit suggested in the IC manufacturer datasheet.

Peter



On 10/31/2013 12:05 PM, David Stinson wrote:
> I've been told that DC-DC Buck or Boost converters like these:
>
> http://www.ebay.com/itm/261316095061
> http://www.ebay.com/itm/261318532314
>
> will regulate their outputs through wide input excersions
> at least as well as something like an LM-317
> (assuming one stays within the devices design limitations).
>
> Can anyone here vouch for that?
>
> 73 D.S.
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