A control circuit for an electronic converter is generates a drive signal of the electronic converter by setting the drive signal to a first logic level in response to a switch-on signal, and to a second logic level in response to a switch-off signal. The control circuit comprises a valley detection circuit and a combinational logic circuit. The control circuit comprises a blanking circuit configured to generate the blanking signal by determining a blanking time, and asserting the blanking signal when the blanking time elapses since the start of the switch-on or the switch-off interval. The control circuit comprises a blanking time adaption circuit to adapt the blanking time as a function of a blanking time adaption signal based on the input voltage, and to increase the blanking time when the input voltage increases, and decrease the blanking time when the input voltage decreases.