Design parameters: Vin : 5V ,Vout : 4.2V and Iout 3A.
Observation:
At 0.3A Load, the output voltage obtained as 4.13V, Duty Cycle - 87.33% , Vfb - 0.62V
At 3A Load , The output voltage obtained as 3.86V, Duty Cycle - 78% , Vfb-0.575V
When the load is getting increasing the output voltage is started reducing.Kindly help us to resolve this.