Recommended Family for Design
Posted by: Brad Carey
on
I have a customer request for a power supply with the following requirements:
- Input Voltage 24V AC/DC (+/- 20%), and at 50/60Hz (+/- 5%)
- Output Voltage: Symmetrical Floating Outputs, -21V and +21V @ 1.5A per output
-Protection: Overload/Short Circuit w/pulsing for automatic restart under overload/short circuit conditions.
Looking to see if PI has a reference design/App note or can suggest the appropriate family.
Thanks,
Brad
回應
At this power level (63 W) DPASwitch is not suitable. I'd suggest that you use a voltage doubler at the input. That should make sure that you have about 60 V DC after rectification.
With this input voltage you can use a TOP257E or TOP258E (or Y package) and a EER28 core.