what IC is that ? Dwa108-A

[boo9]

Could somone please help me identify following element from ATX power supply, Delta DPS-280FB
May be the IC has different more popular designation ?

I cannot locate datasheets or schematics

Hint: There is a LM339n (quad comparator)  next to this chip on the PCB.

[amyk]

Delta used proprietary controllers in their PSUs. Trace out the circuit and see if that gives you any clues if it's similar to some other common one.

[gamalot]

I am not 100% sure, it may be compatible with TPS5510, hope this help 

http://www.ti.com/lit/ds/symlink/tps5510.pdf

[boo9]

thank you very much, guys

EDIT: the measured voltages on the pins of the IC match the  TPS5510 specs.
many thanks.