What is the power factor (PF) requirement for an SMPS or even just a standalone power factor correction (PFC) stage with a power level above 75W?
I know that in some cases the customer will specify the requirements at say 10% total rated load to be 0.9. For instance, assume that the PFC is rated for 1600W, thus 10% load will be 160W and the required PF is 0.9.
What about PF in between 75W - 160W? Does it have to comply with any requirements?
NOTE: Active power factor correction is considered in this example.