• NXP has launched the industry's first battery management system chipset based on hardware-level synchronization mechanism, electrochemical impedance spectroscopy (EIS) technology, enabling precise monitoring of all cells within high-voltage battery packs
• Introducing laboratory-level diagnostic capabilities into automotive applications to enhance battery health monitoring and enrich NXP's electrification solution portfolio with advanced monitoring functions
•An efficient and cost-effective battery cell monitoring solution helps automakers track the health status of batteries, enhance the safety performance of electric vehicles (EVs), and support fast charging technology

Eindhoven, the Netherlands - October 30, 2025 - NXP Semiconductors N.V. (NASDAQ: NXPI) today announced the launch of the industry's first battery management chipset integrated with EIS technology, enabling nanosecond-level synchronization of all cells based on hardware. This system solution is designed to enhance the safety, service life and overall performance of electric vehicles and energy storage systems. The EIS measurement function is directly integrated into the three functional unit modules of the BMS chipset, helping automakers gain in-depth insights into battery health and operational status.
Nowadays, while OEM manufacturers are controlling costs and simplifying designs, they are also under multiple pressures such as enhancing charging safety, accelerating charging speed, extending battery life and strengthening the safety of energy storage systems. The traditional battery monitoring solution is based on software, which is difficult to accurately capture millisecond-level dynamic events and cannot obtain early signs of faults. To ensure the safety of fast charging, such systems usually require the addition of sensors and software modules.
NXP's new chipset solves the above-mentioned industry problems by directly integrating EIS technology into the hardware. This chipset consists of three BMS units: the BMA7418 battery cell sensor, the BMA6402 communication gateway, and the BMA8420 battery junction box controller. It enables real-time high-frequency monitoring without the need for additional components or costly redesigns. This hardware-based solution features high-precision synchronization capabilities and integrates an on-chip discrete Fourier transform module to achieve high-precision impedance measurement. It helps Oems manage fast charging safety more effectively, identify early signs of battery failure, and reduce system complexity.
Naomi Smit, Vice President and general Manager of NXP Semiconductors' Drive and Energy Systems, said: "NXP's EIS solutions bring powerful laboratory-grade diagnostic tools into in-vehicle systems." By reducing the use of additional temperature sensors and simplifying the system design, it supports the transition to a faster, safer and more reliable charging method while ensuring battery health. This chipset also offers a convenient upgrade solution, featuring a pin-compatible package that can directly upgrade the battery cell module and the battery junction box control unit."
Electrochemical impedance spectroscopy technology monitors by sending controllable electrical excitation signals to the entire battery pack. NXP's system solution integrates an electrical excitation signal generator, which can not only pre-charge high-voltage circuits but also generate excitation signals. This design enables the DC bus capacitor to serve as an auxiliary energy storage unit for the battery, enhancing the energy efficiency of the excitation process.
By measuring the response of the battery cell to the excitation current at different frequencies, the system can precisely capture the subtle changes in the internal state of the battery cell, such as temperature gradients, aging effects or micro-short circuit phenomena. Compared with traditional time-domain measurement methods, EIS technology can quickly and reliably assess the impedance of each battery cell, distinguish impedance changes from capacity attenuation, and accurately evaluate the battery's health status even under dynamic conditions such as charging or sudden load changes.
This complete solution is expected to be available on the market in early 2026, and the accompanying enabling software will run on NXP's S32K358 automotive microcontroller platform.