I have a design based on rdr236.pdf and rdr239.pdf.
I have just powered it up and I get the proper output voltage 24V but the LLC waveform is the correct frequency but it has a low frequency oscillation on it.
Here is my schematic and some waveforms.
There is also a low frequency oscillation on the 400V from the PFS.
I checked my HiperLCS Design1.pixls and HiperPFS Boost Design1.pixls and tried R52 set for Burst mode 1,2,and 3 ,
it didn't change the waveform .
How do I submit the .pixls files to you?