Hi,
I got a customer request for which I cannot answer.
He is requesting a power supply for AC/DC 220Vin AC, 5Vout DC, Iout 100mA, better if isolated and in this case they want to avoid transformer since it is costly.
If we also have intergrated PFC or cheap external PFC to add it is a pro.
Do you have anything to propose here?
80% of the time customer does not need isolation, but once he needs he does not want to use a transformer.
I was also thinking of ACDC LDO TPS7A78, but this does not have isolation.
I am confused by customer question.
Many Thanks,
Antonio