Hi Eric,
we have designed Buck converter in CC+CV mode using LM5117-Q1 as shown in datasheet figure 36. but we are getting some issue in CC Mode.
our Product Specification is:=
Input := VIn 15V to 45V.
Output Vout must be := 12.3V.
Output Current must be limit to := 10A precisely.
issue:=
as we increases input voltage from 15V to 45V , the output Current also changed. it is changing from 8A to 14A as input changes.
but we need out Current must be limit to 10A precisely.
Observation:=
while testing one by one point in the circuit we got one observation is that, CM voltage (VCM) is changes as Vin Change with some load .
but we are not understanding this. Can you pls let us know where we are making mistake?
