Thanks to the development of the vehicle technologies and the introduction of new features, automotive ECUs can absorb a very wide range of current during their normal activity, depending on the different operational conditions (workload or active functionalities). In the ECUs testing activities it is fundamental to monitor the power consumption, to verify if the current draining is compatible with the vehicle operating conditions. Most commercial solutions do not allow to measure the current drain in the whole operating range with the required accuracy, and their integration in automated testing solutions is often not possible. From this need, there is a growing interest in developing a custom solution to measure a wide current range with a high accuracy.