Digital Power Control

Rob Gaddi <rgaddi@technologyhighland.invalid> writes:

> On Wed, 23 Sep 2015 20:21:33 -0400, Randy Yates wrote:
>
>> Rob Gaddi <rgaddi@technologyhighland.invalid> writes:
>> 
>>> Got an application coming up for a high-efficiency, multikilowatt
>>> polyphase power supply that needs scarily fast responses to external
>>> requests.  I'm thinking about maybe throwing a C2000 at the problem. 
>>> It could really simplify keeping my phases in alignment and getting the
>>> feedforward through all the paths to match.
>>>
>>> TI sure makes it look easy, almost as if it's their job to do so. 
>>> Anyone got any stories to share from that war?
>> 
>> PS: Rob, are you considering using GaN devices? Aren't they known
>> (basically) for their low on-resistance and high switching rates?
>
> We gave it some thought, but for a 1 MHz sort of switch rate silicon's 
> still fine.  We've done some experiments with GaN in the far distant 
> past, but found it to be easy to damage.  Plus any time I can leave 
> exotica off the BOM I'm happier.
>
> Granted that was all before TI got into the game which definitely changes 
> things.  Again, we didn't get particularly far into this process before 
> it changed direction.

Interesting to hear anyway of your thought processes. Thanks. 
-- 
Randy Yates
Digital Signal Labs
http://www.digitalsignallabs.com