stimperz
Electrical
- Apr 19, 2008
- 5
hello,
we are doing a dual SMPS for a mining application.
Spec is:-
Vin = 85-265VAC (can go through spells of repeatedly dipping and rising back up)
Vout = 50V non-isolated
P(out) = 200W
PFC needed.
200W output power supplied by two identical SMPS's in the same enclosure sharing the load -each able to take all the 200W load of the other fails.
No Fan
Need inrush protection
Anyway, the input voltage 85-265VAC is bad news, -going thru spells of rising and dipping.
Therefore we cannot use dissipative methods of inrush limitation -else it would use too much power as inrush is dissipated at each dip/rise in mains input.
Therefore, we need to use a buck inrush limiter for greater efficiency(?)......and we can have this buck use the CCM Boost PFC's inductor (and put a flyback diode in there obviously).
Amyway, has any reader heard of using a buck inrush limiter in this way?
Or do readers know of other methods of inrush limitation for our kind of up-and-down input mains
we are doing a dual SMPS for a mining application.
Spec is:-
Vin = 85-265VAC (can go through spells of repeatedly dipping and rising back up)
Vout = 50V non-isolated
P(out) = 200W
PFC needed.
200W output power supplied by two identical SMPS's in the same enclosure sharing the load -each able to take all the 200W load of the other fails.
No Fan
Need inrush protection
Anyway, the input voltage 85-265VAC is bad news, -going thru spells of rising and dipping.
Therefore we cannot use dissipative methods of inrush limitation -else it would use too much power as inrush is dissipated at each dip/rise in mains input.
Therefore, we need to use a buck inrush limiter for greater efficiency(?)......and we can have this buck use the CCM Boost PFC's inductor (and put a flyback diode in there obviously).
Amyway, has any reader heard of using a buck inrush limiter in this way?
Or do readers know of other methods of inrush limitation for our kind of up-and-down input mains
