Cored Hall sensors rely on a ferrite core to concentrate magnetic flux, enabling high-sensitivity current measurement through a fixed magnetic path, with larger size and greater mechanical complexity.

Figure 1 Traditional Cored Hall

No magnetic concentrating core is implemented. Devices support surface mounting against the top PCB of external busbars, paired with multiple signal combination architecture that directly measures raw magnetic fields from the current-carrying conductor. On-chip signal conditioning and compensation maintain reliability across temperature, frequency, and lifetime. A crosstalk rejection algorithm suppresses crosstalk from adjacent phases. Packaged as monolithic surface-mount chips, they support PCB soldering or side mounting to busbars without through-hole requirements. The devices can be simply mounted on the traction inverter board above the busbar region, which looks like any normal device without any requirement on the module, fixture, and busbar modification.

Figure 2 TI Coreless Hall