Patent ID: 8436667

Claim:
A method for operating a PWM output of a driver for a power semiconductor, the PWM output including a PWM signal and a binary supplementary value under predetermined operating conditions, the method comprising: converting an analog value to be output by the driver into a PWM signal which has a first (Hi) and a second (Lo) signal level and which is at a known PWM frequency, and for a first value of the binary supplementary value, outputting the PWM signal at the PWM output, for a second value of the binary supplementary value, outputting the PWM signal at the PWM output together with a supplementary signal; wherein the first (Hi) or second (Lo) signal level determined on the basis of the PWM signal and the respective other signal level (Lo, Hi) are output in alternating sequence as said supplementary signal at a signal frequency greater than said known PWM frequency.