I am designing a power supply that uses a half bridge to generate the AC from DC input. I won't get into the control algorithm but it is a kind of hysteretic control / frequency hybrid. I am looking at the half bridge switching waveforms and intuitively I am unsure whether in practice there would be any issues. I will attach them to this thread.
Would the transformer saturate in this case? I am unsure if my scope simply has the switching waveforms connected the opposite way they should, but even so - if the upper MOSFET is on for a shorter amount of time (lower duty) because of hysteretic action turning both switches OFF, and then resumes switching - will the transformer saturate?
My basic idea is that the flux you put into the transformer must be taken back out - but with these waveforms this would not be the case...
But then again, so how does hysteretic mode work? Is there a way to ensure that the bridge switches always switch at 50% duty as expected?
Would the transformer saturate in this case? I am unsure if my scope simply has the switching waveforms connected the opposite way they should, but even so - if the upper MOSFET is on for a shorter amount of time (lower duty) because of hysteretic action turning both switches OFF, and then resumes switching - will the transformer saturate?
My basic idea is that the flux you put into the transformer must be taken back out - but with these waveforms this would not be the case...
But then again, so how does hysteretic mode work? Is there a way to ensure that the bridge switches always switch at 50% duty as expected?
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