NXP introduces next-generation battery controller ics designed to optimize the performance and safety of BMS

     NXP Semiconductors has introduced next-generation battery controller ics designed to optimize the performance and safety of battery management systems (BMS). NXP's MC33774 18-channel analog front-end device delivers cell measurement accuracy down to 0.8 mV and excellent cell equalizing force over a wide temperature range, supports the functional safety class ASIL-D, and is suitable for use in safety-critical high-voltage Li-ion batteries to fully tap available capacity.

     NXP's new generation battery management system IC's cell measurement accuracy is as low as 0.8 mV, and its life-cycle design robustness enhances the performance of the battery management system, fully tapping the available capacity of lithium-ion batteries and energy storage systems for electric vehicles and improving safety

     Lithium-ion batteries are widely used in electric vehicles because of their high energy density per unit volume and weight, low self-discharge rate, low maintenance costs, and can withstand thousands of charge and discharge cycles. Batteries account for about 30 to 40 percent of the total cost of an electric vehicle. A typical 800V lithium-ion battery system consists of about 200 individual cells in series. During a multi-year life cycle, it is critical to accurately estimate the state of charge (SoC) of a battery pack at any given temperature and instant. The NXP MC33774 provides accurate battery measurements over the full life cycle from -40°C to +125°C for highly accurate range prediction.

     Li Xiaohe, Vice president and general manager of NXP's New Energy and Drive Systems product line, said: "The MC33774 has gone through a rigorous design and validation process to ensure its safety and reliability in automotive applications. This includes system-level verification to test electromagnetic compatibility, electrostatic discharge performance, transient immunity and communication reliability in harsh scenarios. The MC33774 is designed to reduce the cost of OEM systems while maintaining their reliability, ensuring that the electric vehicle industry can safely bring vehicles to market even within a short development cycle."