I'm looking into designing a high power SMPS
The design critera is a bit interesting.
1) Active Power factor correction <-- doable
2) 
  a) 60V 10A peek
  b) 2-48V 5A peek supplies
  c) peek indicates this is the max current that is to be drawn but not
neccesarily for more than 2 minutes.
3) it is not for telecom use 
4) wide supply range 120VAC - 240VAC
5) High efficiency, I prefer > 80% goal is actually 90% or better at
this power level I personally do not like the idea of drawing > 11 Amps
with this. (With most SMPS without Power factor correction that's 13A
which is a bit high).
6) It needs to be able to be pluged into regular power outlet. IE
120VAC or 240VAC house-hold power outlet (because that's life you can't
expect people to wire things specially for you).

What power factor correction IC's I've seem in use, are a boost
convertor (say 400VDC).  I was looking at Fairchild's FAN4810 to use as
a start for said project.  

Anyhow has anyone had success with > 500W supplies that won't go
nuclear if loaded heavily on ocassion?

Stephen


		
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