Texas Instruments (TI) has introduced the TMCS2100-Q1, a multiaxial coreless Hall-effect current sensor designed for hybrid electric vehicle and electric vehicle traction inverter applications.
The device measures magnetic fields in both horizontal and vertical directions and uses a proprietary algorithm to improve current measurement accuracy. TI said the architecture delivers 20 times greater accuracy than single-axis, coreless alternatives, with displacement error below 1% at 0.4 mm movement and as low as 0.25% at 0.1 mm.
The technology is designed to address accuracy challenges caused by vibration and magnetic crosstalk in traction inverter systems. It also eliminates the need for busbar modifications such as notches, slices or holes, allowing greater flexibility in mechanical and thermal design.
According to TI, improved current measurement can enhance torque control, reduce torque ripple and support more efficient motor operation.
The sensor is particularly relevant as automakers adopt higher-voltage architectures, including 800 V systems, where precise current measurement becomes increasingly important for powertrain performance.
Production quantities of the TMCS2100-Q1 are now available upon request. TI has also made evaluation and characterisation modules and a reference design available for engineers developing automotive power electronics.
