Hello, out lab is using the MS058 OScope to measure the drain to source voltage on an LLC converter with a front end PFC circuit. We are seeing some discrepancy in our measurements when using two different probes. I was hoping to get some advice on this topic. The summary of the two probes is below:
- using a TIVH05L IsoVu probe with the SQPIN 500X tip the turn off VDS measurements show the voltage overshoot to be ~500V.
- using a THDP0200 the measurements are showing significantly higher overshoot voltages (~650V).
Any recommendation on which measurements are accurate and what explains the discrepancy between the two measurements?