[USRP-users] 12V to 6V Converter for USRP Supply

HHH howard.mailinglist at gmail.com
Sun Feb 17 12:48:59 EST 2013


Would just find an adjustable regulator from ebay cost only several USD 
more cost effective?




On 17/2/2013 8:07, Radio User wrote:
> I use my USRP in the field with a deep cycle marine battery.
> All the other equipment runs at 12V DC, and until now I've
> had to  plug the USRP's wall wart into a small 120V AC inverter.
> I've been looking for a DC to DC converter to replace the wall wart,
> and found one recently.
>
> Vicor/PICOR makes a switching regulator and an evaluation board
> that provides a pretty reasonable 12V to 6V DC to DC converter
> that can supply up to 10A to the load.  (see
> http://cdn.vicorpower.com/documents/datasheets/Picor/ds_pi33xx.pdf )
>
> The PI3302-00-EVAL1 is available for $50.51 from Digikey, and
> may be available elsewhere for less.
>
> The standard configuration of the P13302-00-EVAL1 produces
> 5V at the output. By putting a 4700 ohm resistor in the RADJ2
> position (between the ADJ pin and the SGND pin) the output
> changes to 6V.  Regulation appears to be good, and I've been
> testing this for about a week.
>
> I added the optional input decoupling (about 80uF) on the
> 12V line to provide a little more input stability.  The spec for
> the device says that it will maintain regulation down to 11V
> input at no load, and may work at lower inputs provided
> sufficient load on the output.
>
>
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