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Hi all,
I'm trying to design a synchronous 3V -> 12V boost converter for the first time. I've got a working asynchronous converter, but I've designed those many times before. I'm failing in designing the synchronous version. I don't think I have many resources, as most of the converters I've seen online are buck. I'm certain my switching signal is a problem, as the switching signals sometimes overlap. This leads both gates to be open at the same time, but I'm not sure how to configure them to open & close properly. I've simplified the rise & fall times to be as low as possible in the hopes of simplifying my system, so they're currently not realistic.
My output ripple voltage is over ±4V, & when I open the SR MOSFET for the entire simulation, the simulation outputs exactly what I want, nearly 12V. So I'm certain the problem is the switching logic. If there was a chip I could use for the switching logic, I'd accept that as well.
My output & input current is massive as well, again I'm sure this would be fixed with proper switching logic.
I've attached both the working asynchronous converter & the nonworking synchronous one.
I'm trying to design a synchronous 3V -> 12V boost converter for the first time. I've got a working asynchronous converter, but I've designed those many times before. I'm failing in designing the synchronous version. I don't think I have many resources, as most of the converters I've seen online are buck. I'm certain my switching signal is a problem, as the switching signals sometimes overlap. This leads both gates to be open at the same time, but I'm not sure how to configure them to open & close properly. I've simplified the rise & fall times to be as low as possible in the hopes of simplifying my system, so they're currently not realistic.
My output ripple voltage is over ±4V, & when I open the SR MOSFET for the entire simulation, the simulation outputs exactly what I want, nearly 12V. So I'm certain the problem is the switching logic. If there was a chip I could use for the switching logic, I'd accept that as well.
My output & input current is massive as well, again I'm sure this would be fixed with proper switching logic.
I've attached both the working asynchronous converter & the nonworking synchronous one.
