TPS63070: TPS63070 giving noise O/P.

Hi Harsh,

The output voltage seems stable. Do you mean the ripple is large? You may use AC and 10us/div to show the ripple.

My o/p is not that much stable as i set 3.3v o/p, but we get 3 to 3.8 or some time 4v.

As my attach image we use the Dc to show ripple.

Hi Harsh,

Could you show me the waveform when it is not stable? L1, L2, Vin, Vout should be captured.

Are you using the EVM now? 

this is the o/p waveform where the its not stable.

Hi Harsh,

It seems you are using TI's evaluation board, right? Did you short JP2? It looks like the output voltage is changing from 5V to 3.3V. Please provide more more waveforms and make sure the jumper are well shorted.

yes we make the EVM design on GPB.

yes i provide waveform.

Hi Harsh,

Please refer the user guide for better test

www.ti.com/.../slvuao5a.pdf

yes i check it and VSEL is perfect connected.

but i have only one question to why they show so much ripple in O/P waveform.

Hi Harsh,

If you want to measure ripple, please use AC setting, 

Yes i will check but why they give so much ripple when we use the recommended capacitor?

And also not get proper voltage 3.3v?

its varies so much..

pls you have any solution?

ok i will check.
Thank You For Your Support.