Hi,
I am trying to design a buck-boost regulator around LM5118 and I want use the below parameters:
Vin= 23 to 34V DC.
Vout= 28V DC.
Iout= 5A.
When it doesn't any load the output voltage is 28V but when a load with 0.3A connected to output the voltage reduced to 16.6V.
I used IRF2807 (VDSS = 75V ,RDS(on) = 13mW, ID = 82A ) for Q1 and IRFZ46N (VDSS = 55V , RDS(on) = 16.5mΩ , ID = 53A ) for Q2 and MBR760 for diod.
Please help me.