www.mpja.com:
"SKSP500"- 12v 40A (need 10% derating @ 25 deg C?!), 84% eff, $120US
"PS1-150W-12"- 12v 12.5A, 82% eff, $40.75
No MTBF data
2nd one not so interesting. the 40A one could be, for a few niche applications.
www.powerstream.com:
http://www.powerstream.com/DC-PC-12V-400.htm
PST-APS15- 12v 15A 80-86%eff (not clear), $132
PST-APS30- 12v, 30A, ditto eff, $208
They look like some variants of the supplies made by Advanced Power Solutions (www.advpower.com).
The powerstream ones look like they pull a fair bit of reactive current. 432VA required for 200Wdc output. So no PFC for the powerstream if that's a gripe.
The mpja ones claim PFC but have a massive cold start surge. Probably passive PFC... (I just like the idea of the SMPS being nice to my house wiring)
I think I'm now more or less over the idea of using the pico. The system efficiencies for a (relatively) high powered system just doesn't cut it, and it requires munging around with unsequenced supplies around the pico.
Although if someone finds a 95%+ eff ac/dc converter @ 250W, let me know
![Smile :)](./images/smilies/icon_smile.gif)
More efficiency might be had modding an existing ATX supply, by replacing the 12v diodes in the secondary rectification stage with smart mosfets (if that's not already done by the manufacturer).
Elrast