AC/DC clamp probe suggestions for GaN power supplies at 200KHz bandwidth

[Kiriakos GR]

I never forget that I am just an electrician, while AI this has a different opinion about me. 

Never the less, and according to oscilloscopes rule of thump about bandwidth selection.
In order to properly evaluate 200KHz frequency, you are looking for a current clamp probe at 1MHz of bandwidth.

Back in time, I thought that a current clamp probe at 1MHz of bandwidth, this is usable measuring current of harmonics at switching power supply.
At frequencies range 70KHz and above.

For GaN power supplies, you need to ask your self of what you are after to do.
You can measure accurately with just an 1MHz probe.
But if you are after and harmonics analysis, an 10MHz probe it might be an more appropriate choice.

High bandwidth current clamp probes they are now very expensive, its of high importance for you to think, and make a wise choice.