ARod1993
Regular
So I decided to start playing with a design for a 150V-capable forward converter for generating low voltage rails (5,12,15,24) from a 24S to 32S battery pack, and it turns out that a lot of the design for 150V-plus transformers are intended for flyback converters rather than forward or push-pull designs. I was wondering if anyone here had experience designing planar transformers, since that's likely going to be easier to do for a commercial/open-source design than having people wind their own wire.
Specifically, I'm looking at designing a UC284x-based 150V-24V converter, which would then have little switching regulators hanging off of them for 5V as well as 12 or +/-15V. I'm envisioning designing a tiny PCB with a spiral coil that has 7 turns on the outer two layers and two turns on the inner two layers, and you'd then clamp a little E-core around that bit of the PCB. It's unfortunately not as nice as a little prebuilt transformer from Wurth/Bourns/Coilcraft, but it's an interesting option to try.
Specifically, I'm looking at designing a UC284x-based 150V-24V converter, which would then have little switching regulators hanging off of them for 5V as well as 12 or +/-15V. I'm envisioning designing a tiny PCB with a spiral coil that has 7 turns on the outer two layers and two turns on the inner two layers, and you'd then clamp a little E-core around that bit of the PCB. It's unfortunately not as nice as a little prebuilt transformer from Wurth/Bourns/Coilcraft, but it's an interesting option to try.
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