grizedale
Advanced Member level 3
Hi
I am doing an offline flyback at 50W.
There is a split rail of +/-35V (+/- 2v) (at 40W)
Also there is a 5V, 20W rail which needs to be 4.5V to 5.5V absolute max
Is it ever advisable to do such a thing without a secondary side smps to give the 5V.
I would have thought cross regulation would never be good enough to give the required 5V output with sufficient accuracy?
I am doing an offline flyback at 50W.
There is a split rail of +/-35V (+/- 2v) (at 40W)
Also there is a 5V, 20W rail which needs to be 4.5V to 5.5V absolute max
Is it ever advisable to do such a thing without a secondary side smps to give the 5V.
I would have thought cross regulation would never be good enough to give the required 5V output with sufficient accuracy?