TPS53015: Skip mode output ripple phenomenon

Jericho Tsai

Intellectual 380 points

Part Number: TPS53015

Hi Sir,

My customer measure Skip mode ripple and SW waveform difference data sheet

Datasheet waveform

Customer measure waveform

Zoom in

SW wave form Zoom in.

Why SW have many plus not one plus?

can we fine tune what component will similar datahesst waveform??

Thanks

over 5 years ago

0 JohnTucker over 5 years ago

TI__Guru**** 191445 points

Jericho,

There are no waveforms like that in the datasheet. What circuit did you use to measure the top 2 waveforms? Are all four waveforms from the same circuit, just zoomed in? Can you provide your schematic and layout?

0 Jericho Tsai over 5 years ago in reply to JohnTucker

Intellectual 380 points

There are no waveforms like that in the datasheet.-->the waveform as below this skip mode output voltage and SW waveform form datasheet figure 15.

What circuit did you use to measure the top 2 waveforms?

Are all four waveforms from the same circuit, just zoomed in? yes.

Can you provide your schematic and layout? you can refer to below

PH10SU_PTP_DB_PWR_0509_1500_R0A.7z

Thanks

0 JohnTucker over 5 years ago in reply to Jericho Tsai

TI__Guru**** 191445 points

Jericho,

Yes that is the waveform from the datasheet, but not the same from your original post. We are going to move this off line. I'll close this thread now.

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TPS53015: Skip mode output ripple phenomenon