a circuit that tracks the maximum power point of the solar cell is disclosed in the present invention . unlikely conventional way of maximum power point tracking which tracks mpp in the time frame of second or minutes , in the disclosed invention , mpp is tracked within the switching cycle , using the natural current ripple of the downstream converter circuit . the switching cycle is in the order of 10s of micro - seconds . within the switching cycle of the converter , there is a natural current ripple which will result in the power change . the mppt circuit tracks the power change and adjusts the current reference value accordingly to operate at mpp of the solar cell .