A half-bridge driver circuit includes an amplifier configured to generate a measurement signal indicative of a current flowing through a shunt resistor. A processing circuit is configured to selectively acquire a sample of the measurement signal in response to a trigger signal. A synchronization circuit is configured to determine a first value indicative of the switch-on duration of a high side control signal, determine a second value indicative of the switching period of the high side control signal, compute a third value based on the first and second values, generate a third signal based on the third value when the next switching period of the high side control signal starts, start a second counter in response to the third signal, compare the count value of the second counter with a reference value to generate a fourth signal, and generate the trigger signal as a function of the fourth signal.