Please check the below waveform of my 5V output ripple of the buck converter.
I am measuring the output ripple across the output capacitor of the converter. Why are these spikes coming while measuring even though I am using the short spring type ground tip
Switching frequency of the converter is 248kHz. And one more thing I am observing is that, while I measure on one channel, the switching frequency at the switching node of the converter and on the other channel the ripple voltage, the ripple voltage amplitude is going high. But If I measure it separately, I am able to get the correct ripple voltage amplitude. What might the reason for this? I am using short ground tip while probing on both the channels
Updated Waveform, along with switching frequency. Please check the below waveform. I am probing across the output cap of buck converter with spring tip and the switching frequency at the cathode of the diode (referring common buck topology) . Can you see, when I measure both waveforms together, I am getting this awful spike which I have marked with cursors?
Why is that and what to do to get proper waveform?