Going from a higher to a lower maxsteptime is worse?

QSPICE
1

Hi,

Going from a higher to a lower maxsteptime is worse? Should not be the other way around?
test.qsch (7.5 KB)

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2

Now other thing: it’s better with higher tstop than with lower tstop value?

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What’s happening?

3

minus 1ns from Ton in both V1 and V36, to prevent any overlapping in signal transition. i.e., change 10u to 10u-1n. Does the result look more make sense?

4

I can try this, but tomorrow as it’s night at me right now. I think that I tried this already, but I did not remember the results. I will try tomorrow and post the result

5

This is result of reducing Ton by 1ns.

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However, adding deadtime without diode for this circuit can give you trouble. You have to add diode to the switches if you increase the deadtime, or it will have problem for inductor energy to go when both switches turn off.

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6

Ok. It’s fine now.!!