Current measurement circuit configured to provide a measurement signal (31, 32) for a controller for controlling a switching of power switches (51, 52, 53, 54) of a power converter, comprising a) a first current sensing circuit configured to sense a first bidirectional current representative of a current through a first power switch of the power converter connected to an input voltage of the power converter, the first current sensing circuit being adapted to provide a first sensing signal indicative of the first bidirectional current; b) a second current sensing circuit configured to sense a second bidirectional current representative of a current through a second power switch of the power converter connected to the input voltage of the power converter, the second current sensing circuit being adapted to provide a second sensing signal indicative of the second bidirectional current; and c) a switching circuit being adapted to provide a first measurement signal based on the first sensing signal, the second sensing signal and a polarity signal representative of a polarity of the input voltage of the power converter, characterized in that d) the first measurement signal is indicative of the first bidirectional current during a first time interval starting at a zero-crossing between a negative starting value of the first bidirectional current and a positive maximum value of the first bidirectional current and ending at switching off of the first power switch, and indicative of the second bidirectional current during a third time interval starting at a zero-crossing between a negative starting value of the second bidirectional current and a positive maximum value of the second bidirectional current and ending at switching off of the second power switch, wherein the time intervals (61, 63) are shorter than a complete switching cycle of the power switch (51, 52). a) a first current sensing circuit configured to sense a first bidirectional current representative of a current through a first power switch of the power converter connected to an input voltage of the power converter, the first current sensing circuit being adapted to provide a first sensing signal indicative of the first bidirectional current; b) a second current sensing circuit configured to sense a second bidirectional current representative of a current through a second power switch of the power converter connected to the input voltage of the power converter, the second current sensing circuit being adapted to provide a second sensing signal indicative of the second bidirectional current; and c) a switching circuit being adapted to provide a first measurement signal based on the first sensing signal, the second sensing signal and a polarity signal representative of a polarity of the input voltage of the power converter, characterized in that d) the first measurement signal is indicative of the first bidirectional current during a first time interval starting at a zero-crossing between a negative starting value of the first bidirectional current and a positive maximum value of the first bidirectional current and ending at switching off of the first power switch, and indicative of the second bidirectional current during a third time interval starting at a zero-crossing between a negative starting value of the second bidirectional current and a positive maximum value of the second bidirectional current and ending at switching off of the second power switch, wherein the time intervals (61, 63) are shorter than a complete switching cycle of the power switch (51, 52).