>>2938743
Ayyy Anon, Anon! If you're the ANon I believe you to be you sure remember the DESAT clamp, that kicks in at 9V.
Well I guess that would be a fast way to find out if its 10V or more. But I honestly dont want to see that stuff get pinched like that.
Anyways. I think it's unironically IGBT time again.
You see Anon. Professor wanted to try and change the coupling capacitor for a switch. So I did that and I like it it works great.
I just used that MOSFET for the main switch because I have it like pocket sand. And also should go things wrong it could at least handle the voltage.
So turns out: When you think digitally I think there really is no control scheme that allows you to, without feedback, achieve intrinsically safe operation using a second switch with a low voltage but high amp rating.
You see: Suppose short on the output. Okay to not burden switch number two you could choose to close the charging switch before decoupling the output. But that's a runaway current situation, open loop control is based on the assumption each charging cycle starts at 0 amps. So within a few periods it's over.
So I thought about a few more things and it turns out: It could be the actually best solution to switch the output off really slow and dissipate whatever energy might be left in the coil in the second switch. IMO the output switch is never in a hurry and since it usually does hard switching tail current and bipolar shit my ass.
Sooo I took stock and found various IGBT that seem suitable. Might try that.
Like picrel. Top is the charger. Bottom the IGBT that switches the output. If gate R is large enough it should just go like that. Maybe add some C to gate.