I want to convert an atx power supply so that it has a single output, about 6v to 18v and be controlled from a dc voltage (power aupply for a ventilation fan).
I was expecting a standard ic in the supply but its a dna1002 and I'm having trouble finding a datasheet for it, has anyone had experience of one of these ic's?
I'm thinking that theres a feedback resistor divider and a reference voltage that I can tap into to adjust the output.
Not sure whether the regulation is on the 5v line or the 12v line, I dont think they are seperate on this unit, maybe the 5v rail has a switching reg from the 12v rail.