Hi David,
Thanks for your updates.
The AC coupling makes sense that ch1 has negative Vds. So there is no 8 kHz at Vout actually?
These two pdfs have information for ACF closed control loop design:
www.ti.com/.../slua535a.pdf
www.ti.com/.../slua702.pd…
Hi Jeroen,
Did you change the power transformer as well to accommodate you new output voltage?
In any case, for 3.3V solutions, in your design 3.8V, at type 2 power levels, you will typically see active clamp forward topologies. I recommend looking…
C101 is represented correctly in PMP7452 schematic. C19 bridges secondary GND to primary RTN. Note that PMP7452 was built on a different PCB (PMP5818) and so the photograph may be a bit differeent.
