Dear All,
We have 12V SMPS which will again convert to 5V (Display purpose) and 3.3V (for microconteoller). Power supply and block diagram of systems look as below.
I am getting ringing noise at 12V supply which is impacting 3.3V and 5V supply also, see the waveforms for reference. I tried by adding small ceramic cap in between , still there is no use. Can anyone tell what I can do more???? (Waveform measured by decreasing the GND lead of oscilloscope).
Waveforms at Waveform-1:- Time scale with 500uS and 100uS respectively.
Waveform at Waveform-2:- Time scale with 500uS and 100uS respectively.
We have 12V SMPS which will again convert to 5V (Display purpose) and 3.3V (for microconteoller). Power supply and block diagram of systems look as below.
I am getting ringing noise at 12V supply which is impacting 3.3V and 5V supply also, see the waveforms for reference. I tried by adding small ceramic cap in between , still there is no use. Can anyone tell what I can do more???? (Waveform measured by decreasing the GND lead of oscilloscope).
Waveforms at Waveform-1:- Time scale with 500uS and 100uS respectively.
Waveform at Waveform-2:- Time scale with 500uS and 100uS respectively.
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