Various embodiments relate to a current loop controller configured to control a boost converter, including: an amplifier configured to scale a measured current; a subtractor configured to subtract the scaled measured current from a desired current and to output an error signal; a controller including an integral part and a proportional part configured to produce a control signal based upon the error signal; a measuring circuit configured to measure the actual switching period of the boost converter; and a switch signal generator configured to produce a switching signal based upon the control signal and the measured actual switching period, wherein the switch signal controls the boost converter.