Method and circuit arrangement for controlling a stepper motor

A method for controlling a stepper motor having a bridge circuit provided for a motor coil with semiconductor switches for applying a first and a second PWM voltages having opposite polarity to the motor coil and having a charge pump for switching at least high-side semiconductor switches of the bridge circuit, the charge pump having a blocking or dead time, having the following steps:

• detecting a time interval between a rising edge of one of the two PWM voltages and a subsequent rising edge of the other respective PWM voltage,
• delaying the rising edge that occurs later by a delay time that is at least as great as a difference between the blocking or dead time of the charge pump and the detected time interval, in which the blocking or dead time of the charge pump is a predetermined first delay time, and in which the rising edge that occurs later is delayed by a second delay time, which results from the difference between the first delay time and the detected time interval, and
• delaying a falling edge of the same PWM voltage that follows the rising edge that occurs later by the same delay time.