Patent ID: 8847567

Claim:
A DC/DC converter comprising: an input to which an input current (Iin) is supplied, an output at which an output current (Iout) is provided, and a current control circuit coupled to the input and the output, comprising: an internal input that supplies a reference signal (Sref) which is clocked with a duty cycle of the DC/DC converter and provided as a pulsed reference signal (Sref′), and a unit that provides an instantaneous value signal (Sin) using the input current (Iin), the instantaneous value signal (Sin) being proportional to the output current (Iout) of the DC/DC converter, wherein the unit that provides an instantaneous value signal (Sin) comprises a measuring device that measures the input current (Iin) of the DC/DC converter or an input voltage (Vin) proportional to the input current (Iin) of the DC/DC converter, wherein the current control circuit further comprises a first and a second low-pass filter and a comparison device, the first low pass filter is coupled between the unit that provides the instantaneous value signal (Sin) and a first input of the comparison device and provides an average value of the instantaneous value signal (Sin) as an averaged instantaneous value signal ( Sin ), the second low pass filter is coupled between the internal input and a second input of the comparison device and provides the average of the pulsed reference signal (Sref′) as an averaged pulsed reference signal ( Sref′ ), and the comparison device comprises an internal output that provides a control signal (Sctrl) dependent on a comparison of the averaged instantaneous value signal ( Sin ) to the averaged pulsed reference signal ( Sref′ ), wherein the control signal (Sctrl) adjusts the output current (Iout) of the DC/DC converter.