PWM controlled loop with anti-windup protection

A system configured to regulate an output voltage based on a reference voltage, wherein the system comprises,

• an error amplifier configured to determine an error voltage by cumulating a deviation of a feedback voltage from the reference voltage;
• wherein the feedback voltage is indicative of the output voltage;
• a PWM unit configured to generate a pulse width modulated, referred to as PWM, control signal based on the error voltage and based on a PWM clock;
• wherein the PWM clock indicates successive cycles of the PWM control signal;
• a voltage setting unit configured to set the output voltage based on the PWM control signal;
• a saturation detection unit configured to detect a saturation situation of the system, during which the error voltage is built up in a saturated direction without impacting the PWM control signal;
• and
• clamping means configured to interrupt a further build-up of the error voltage in the saturated direction while allowing a modification of the error voltage in an opposite direction, opposite to the saturated direction, if the saturation situation is detected.