The intrawinding capacitance in the secondary (Cds in the figure above) can get high in small size high turns ratio multilayer transformers (3000 ~ 4000 of AWG 37 in this case), but how high can it get? The secondary is gonna operate up to 10 kV and I'm trying to up the frequency (in the 10s of kHz range up to 200 kHz if possible). But all of the factors here (turns, frequency and voltage) are increasing the charge and thus the no-load current draw of the converter.
What are the limits in this? Does it even get high enough to matter? Does segmenting the secondary into 10 or so segments of a couple of hundred turns each, separated by 1 or 2 millimeters of plastic help to reduce the capacitance?