TPS62823: about start-up waveform

Hi Sota-san,

Can you provide below data?

1. Same waveform you attached but with Inductor current and load waveforms (EN waveform can be removed).

2. schematic diagram and layout

Best regards,

Excel

Hi Excel-san,

Best regards,

Hi Excel-san,

I accidentally pressed the reply button on the way.

Please check the attached materials.

Best regards,

Hi Sota-san,

Thanks for the quick update.

Can you try to reduce the Cff (C201) to 120pF and if the small Vout step is removed? How critical is this Vout step in your system? Will is cause fault or instability in your end system?

Best regards,

Excel

Hi Excel-san,

At this point, I'm curious about the cause of the voltage step, but I'm not having any problems.

However, I would like to do it if the voltage step can be eliminated.

Please check the attached materials.

Changing the Cff did not eliminate the voltage step.

Best regards,

Hi Sota-san,

Thanks for the additional info.

I will get back to you soon if there is a possibility to eliminate or reduce the output voltage step at start-up.

Keep you posted.

Best regards,

Excel