BQ79616H-Q1

The BQ79616H-Q1 is a high-precision battery management system (BMS) controller from Texas Instruments, designed for use in automotive and industrial applications requiring robust battery monitoring and protection. It supports up to 12 series-connected cells, enabling accurate voltage measurement with a resolution of 10-bit per cell and an accuracy of ±2 mV. The device features integrated analog front-end circuitry that includes a dedicated cell voltage measurement channel, a temperature sensor interface, and a current sense amplifier for precise current monitoring. This IC provides comprehensive safety functions such as overvoltage, undervoltage, overtemperature, and under-temperature protection across all monitored cells and the system. It also includes configurable charge and discharge current limits, ensuring safe operation within specified battery parameters. The BQ79616H-Q1 supports passive balancing for individual cells using internal FETs, helping maintain cell-to-cell balance and extend battery life. Designed for harsh environments, it meets AEC-Q100 Grade 1 qualification standards, making it suitable for automotive-grade applications including electric vehicles (EVs), hybrid electric vehicles (HEVs), and onboard energy storage systems. Its robust communication interface includes a CAN bus for real-time data exchange with host controllers or other BMS components, enabling seamless integration into complex powertrain architectures. The device operates over a wide supply voltage range of 3.0 V to 5.5 V, supporting both low-voltage and high-voltage battery systems. It includes built-in diagnostics such as self-test mechanisms, open/short detection on cell lines, and fault logging capabilities to enhance system reliability. Additionally, the BQ79616H-Q1 offers flexible configuration options through its serial peripheral interface (SPI), allowing users to tailor settings for specific application requirements. With support for multiple safety protocols and redundant sensing, this BMS controller ensures reliable performance in demanding conditions. It is ideal for applications where long-term stability, high precision, and compliance with automotive safety standards are critical.