Hello,
I want to made a power module for the AD by the LM2576.5, but the lm2576's ripple ware is so high that the AD can't get a clean signal.
My supply value: 15V
Interference value: +-10mv
When I switch on the power:
The input ripple ware value : +-3v
The output ripplr ware value: +- 500mv
I have add more electrolytic capacitors ,the input ripple ware is reduce to +-200mv, then I can't do anything.
If you have some good way to solve it , mail to :chenhuqing@163.com, please.
I need your help ,thanks!!!!
chen-