[SI-LIST] Re: Switching power supply Vs. Linear power supply for Processor Core and IO
- From: steve weir <weirsi@xxxxxxxxxx>
- To: V S <for_si2003@xxxxxxxxx>
- Date: Mon, 09 Mar 2009 16:34:07 -0700
The only advantage linear has in that area now is that it is cheap.
There are excellent offerings in ICs and complete power modules that run
very efficiently from low voltage inputs and have small footprints.
V S wrote:
> I have seen mostly Linear power supply used for processor cores and the
> mobile DDR RAMs in the designs of embedded processor board systems.
>
> For power supply experts - do you see any specific reason not to use
> switching power supplies for processore cores or the low voltages IO ( like
> 1.8V in mobile DDRs) ?
>
> The gain from switching supply could be efficiency.
>
> Vikas Shukla
>
>
>
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