NXP unveils EIS capable battery management chipset

NXP Semiconductors N.V. announced the release of a new Battery Management System (BMS) chipset featuring Electrochemical Impedance Spectroscopy (EIS). This chipset integrates advanced diagnostics directly into electric vehicles (Electrical Validation Suite (EVS)), aimed at improving battery safety and efficiency.

The EIS-capable chipset includes three components: the BMA7418 cell sensing device, the BMA6402 gateway, and the BMA8420 battery junction box controller. This hardware-based solution allows for precise monitoring without the need for additional sensors, facilitating real-time battery health assessments.

NXP addressed the need for accurate battery diagnostics as OEMs contend with demands for faster charging and extended battery life. Traditional software systems often struggle with dynamic conditions that signal early battery failure. The integrated EIS method enhances detection capabilities, providing insights into battery conditions that can improve safety management during charging cycles.

Naomi Smit, VP and GM for Drivers and Energy Systems at NXP, stated, “The EIS solution brings a powerful lab-grade diagnostic tool into the vehicle. It simplifies system design by reducing the need for additional temperature sensors and supports the shift toward faster, safer and more reliable charging without compromising battery health.”

The complete chipset solution is set to be available by early 2026, running on NXP’s S32K358 automotive microcontroller.