what are the most important specs of PFC pre-regulator?

[simbaliya]

I'm asked to do a benchmark graph for PFC products from different companies, therefore the first thing I need to do is to collect the most important specs data for these products. But there is a question, which is that I'm not sure which are the most important spects? Power factor? Power efficiency? If so where can I get these data, since I already read some datasheet for some products, none of them gave any numbers of PF or power efficieny.

 

[mtwieg]

I'm asked to do a benchmark graph for PFC products from different companies, therefore the first thing I need to do is to collect the most important specs data for these products. But there is a question, which is that I'm not sure which are the most important spects? Power factor? Power efficiency? If so where can I get these data, since I already read some datasheet for some products, none of them gave any numbers of PF or power efficieny.

Nominal output power
PF at light and max load
Efficiency vs load
Size or power density (power per volume)
If some documentation doesn't at least spec the first three of those, then it's poor documentation and probably a poor product.

 

[simbaliya]

Nominal output power
PF at light and max load
Efficiency vs load
Size or power density (power per volume)
If some documentation doesn't at least spec the first three of those, then it's poor documentation and probably a poor product.

Can I understand it as if the nominal o/p power of a PFC controller is 100w, then at light load its o/p power is about 25w(if 25w is given in the datasheet), and 100w is for max load?

If so should the most important specs be PF vs load, efficiency vs load?