MP4816 Switching Spikes

Hi, I see mention of switching spikes with the MP4816 device of around 15mV. However, I am seeing much larger spikes of the order of 300-400 mV. Any idea what might be causing this excessive spike voltage and what I could do to fix the problem? Thanks.

Hi Marcus,
Thank you for utilizing the MPS technical Forum!

To better assist you with your question, can you please confirm:

  • if 300-400mV spikes occurs using our Test Circuit 7 illustrated in the data sheet? and
  • if the issue persists when you up the output resistance to a slightly higher value > 50ohms.

During the high voltage transmission, how many cycles are you sending per burst through the analog switches? Are you able to provide scope captures?

Kind Regards,