Dynamic control of edge shift for duty cycle correction

A method for operating a skew control arrangement of a duty cycle correction device for correcting a duty cycle of an input signal, wherein the duty cycle correction device comprises a signal path for generating an output signal from the input signal, the method comprising:

• receiving the input signal;
• feeding the input signal into a main signal path, wherein the main signal path comprises a first duty cycle correction circuit and a first programmable delay circuit;
• correcting a duty cycle of the input signal based on a first duty cycle control signal fed to the first duty cycle correction circuit;
• compensating a phase misalignment by the first programmable delay circuit, wherein the phase misalignment is caused by the first duty cycle correction circuit, and wherein the first programmable delay circuit is controlled by a first delay control signal;
• feeding the input signal also to a reference signal path in which a reference signal is generated from the input signal, wherein an edge of the reference signal is delayed with respect to a corresponding active edge of the input signal by a delay that is at least equal to a sum of a maximum delay caused by the first duty cycle correction circuit and a minimum delay caused by the first programmable delay circuit;
• and
• generating the first delay control signal from the output signal and the reference signal by a skew control arrangement.