SMPS simulation topic: how to get faster simulation speed with good accuracy in QSpice?

[macsky]

How to remove this wiggle?

Hi All, I am currently testing this simple open loop SR buck and I am wondering if there is any way to absolutely remove the tiny wiggle at the output? I tried ttol=0.1ns and also disable fast math option, but it remains. open loop.qsch (16.3 KB) [image] and if I remove the deadtime circuit, it even makes this weird sudden ringing [image] Arief

I hope this is helpful for you. A similar issue about SMPS accuracy was discussed before.