I have made a synchronous buck converter using ir2184 which i intend to use for MPPT using a P&O algorithm. The MOSFETs i am using are IRFZ44n which i connected with a 10 ohm gate resistor. My VCC bias is a 1W 16V zener diode and my bias resistor is 470 ohms. My bootstrap circuit is composed of a 220nF cap and 1n4148 diode. My VCC capacitor is 2.2uF. I am using an arduino nano and TimerOne library which enables me to send a signal of 50kHz to the IN of IR2184. I have not yet tested it on solar panel and tried it using a power supply and electronic load. My problem is that as I try to increase the power of the system by decreasing the load resistance which in turn should increase the load current, the output voltage becomes very far from the ideal output voltage which is calculated using the duty cycle and input voltage. Is this normal or are there issues with this? Thank you.