I also tried to replicate the behaviour shown in Figure 15 of the DRV2700EVM-HV500 datasheet. With 22nF load and a square wave input signal I obtain the following waveform (0-500V levels, switches set to "down/down"): As you can see the rise/fall times are way longer than those shown in the reference design datasheet! I get more than 2.5ms rise/fall times instead of 1ms.
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