Tool/software:
Hello ,
we are using TPS56339 Buck Converter . Vin= 12V Vout= 5V ,2A, . When we give supply to the design we have got noise in the VOUT.
please check the Schematic and Output waveform.
waveform at inductor
waveform at Vout.
we need urgent solution on this please help .
i have add snubber at inductor side .
Hi Shekhar
Can you please post a more clear image? Is below waveform tested on the SW node?
And I can't see the vo voltage clear, what's the noise? do you mean the voltage ripple is too large?
Thanks and best regards.
Hi Shekhar
Looks the load is light and the converter operates under PFM mode. The waveform looks ok.
Also, to better measuring the VO_ripple without picking up more noise, recommend using the small-loop measurement, seen as below: the right setup instead of the left.
Thanks and best regards.
