LLC design review

[Reactance]

My logic (maybe flawed) is that a fault that is serious enough to command a shutdown, should also provoke a power-cycle from the user.
So in the event of a fault, the stored energy in the caps are used to disable the PSU. That's a latched operation and requires user interaction to reset

Makes sense?

Okay, if this is fine for your personal needs then fine (I prefer the other way with circuit intelligence), I get your requirements if a fault command is initiated then permanently disable and wait for power cycle.This however may have some serious drawbacks like constant power cycling to check and remove the fault which will harm and stress the power circuits.

 

[bucks bunny]

I would not say that I have a calculation approach. - that way beyond me 🙂. I followed a few of the spread-sheets thats available online and they gave similar results.

With my limited understanding, i theorized that the core was going into saturation and tried increasing the gap. It helped.

Kind regards TroelsM

Without a basic understanding of the LLC circuit, the magnetizing current and the reflected load current you will fiddle about but not master the LLC.

 

[TroelsM]

Without a basic understanding of the LLC circuit, the magnetizing current and the reflected load current you will fiddle about but not master the LLC.

Fiddling about is ok for me. I have no ambition of mastering such a complex topic on this hobby level.

Any constructive input are welcome in order to improve the design.

Kind regards