NXP Semiconductors BMx7318/7518 18-Channel Li-Ion Controller ICs
NXP Semiconductors BMx7318/7518 18-Channel Li-Ion Controller ICs monitor up to 18 battery cells and are designed for automotive high-voltage battery management systems (HVBMS), industrial energy storage systems (ESS), and 48V applications. These ICs are based on NXP's advanced architecture with dedicated analog-to-digital converters (ADC) per channel, offering flexible and diverse part number selection with pin-to-pin compatibility between the device derivatives. BMx7318/7518 ICs feature an integrated circuit design to achieve complete independence of the cell sampling channel, improve filtering accuracy, and avoid crosstalk. These systems have an ultra-low power mode of 5µA, meeting the needs of long-term storage and overseas transportation.
Features
- Integrated high accuracy current measurement
- TPL or SPI measurement
- SPI2TPL bridge function
- Diagnostics, functional safety, robustness
- Flexible and versatile busbar bypass connection in any location
Applications
- Automotive HVBMS
- Industrial ESS
- 48V applications
Specifications
- From 4 to 18 cells per device
- ISO 26262 ASIL C for cell voltage and temperature measurement
- SIL 2 safety for industrial application
- Up to 12 AIN measurement channels
- Up to 300mA cell balance current
- Typical ±0.8mV measurement error with ultra-low long-term drift
- 64-pin LQFP-EP package
Block Diagram
