TPS43060: TPS43060 VSW abnormal

Kay Chen53

Part Number: TPS43060

Hi There:

I'm try to debug customer's TPS43060 for their abnormal VSW waveform (refer attached file)

I'm already add a large Cout (saying 100uF) but still not improved, could you help to provide some idea to me for which component could modify the VSW performance?

TPS43060.pptx

over 8 years ago

0 Youhao Xi over 8 years ago

TI__Guru* 78190 points

I looks like a loop stability issue. Your output capacitor may be too big. Suggest you change to 10 to 22uF and run the test again. If you insist on having the 100uF cap, then you need to adjust your loop compensation. Could you use TI Webench online too to help you design?

0 Youhao Xi over 8 years ago in reply to Youhao Xi

TI__Guru* 78190 points

Sorry for the typo: It looks like a loop stability issue....

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TPS43060: TPS43060 VSW abnormal