Dear Sir
SPEC is 48Vin to 8Vout/4A
Schematic as below
We find LM5117 is unstable within Iout=0.9A~1.9A ,when up to 2A~4A ,LM5117 switching node is stable ,
As we change Rramp for 120K to 65K ,the jitter can be improved ,but in Iout=1.6~1.65A LM5117 is still unstable
Please kindly help to provide suggestion
PS.CP5 had already change to 0.47uF