Maker Pro
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Multi output flback cross regulation?

H

Hammy

Jan 1, 1970
0
What provides the best cross regulation on multiple output flybacks?

Standard or AC Stack or DC Stack see pictures;


http://i50.tinypic.com/2jb7jfk.png

My outputs are 5V @ 0.35A; 12V @ 0.2A ; -12V @ 0.1 A.

My input is 16-32Vdc. The SMPS is non-isolated using the E/A directly
on a UC3844 controller.

Does using weighted feedback (sensing two outputs) offer any
advantages?

Weighted feedback picture:

http://i47.tinypic.com/2czsm09.png
 
H

Hammy

Jan 1, 1970
0
Thanks MooseFET

My +/- 12V doesn't have to be that tight of regulation +/- 10% is
good enough. My 5V rail is supplying some expensive (for me anyways)
op amps along with an additional -5V supply so that needs to be +/-
5%.

I'll proto it so I can test as many variations as possible.

I see I made a spelling mistake for flyback:) Whoops.
 
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