circuits and methods for a switched power converter providing charge power for at least one battery and at the same time delivering current to operate an electronic device , wherein the converter is enabled to operate out of current limit mode , for the maximum possible range of system load requirements , have been achieved . the input current of the power converter is measured within each cycle - by - cycle , i . e . within each cycle of an external clock reference and the charge current is reduced if the input current exceeds a defined portion , e . g . 80 % of the maximum allowable input current . the power converter may only enter current limited operation after the charge current has been already reduced to zero . operating out of current limit mode ensures a maximum efficiency of the converter , maximize the current deliverable to a given load and minimizes subharmonics in the output current and voltage , thereby minimizing interference with other system component .