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TPS54231 noise/ripple with 660mV peak to peak

Other Parts Discussed in Thread: TPS54331, TPS54332, TPS54231

Hi,

We are getting quite a high noise generated every 1.7 us i.e. @ switching frequency.  

The noise is around 100Mhz in frequency and around 660mV pp.

We have tested it using TPS54231 TPS54331 and TPS54332 Same Problem.

Please suggest.

I am attaching Waveforms and Circuit.  

( The probe is kept at 10X to properly visualize)

(The output desired voltage is 4.3V)

Zoom Out

Circuit:

Regards

Vikas