A printed circuit board assembly includes a current sense trace to transmit an electrical signal through the assembly. The assembly includes a magnetic core including an opening for receiving the current sense trace and includes first stack layers and second stack layers that each define opposing sides of the opening, and elongate layers that extend from the first stack layers to the second stack layers and define additional opposing sides of the opening. The assembly further includes a Hall effect sensor located in the first stack layers or the second stack layers and configured to detect Hall effect data corresponding to a first Hall effect current of the electrical signal having a DC frequency. The assembly further includes a coil wrapped around the first stack layers or the second stack layers and configured to detect coil data corresponding to an AC component of the signal.