The L9963F automotive battery-management IC from STMicroelectronics.
STMicroelectronics
STMicroelectronics (Geneva, Switzerland) today announced that the L9963F automotive battery-management IC now includes all the features needed to manage lithium battery packs in hybrid (HE) and full electric (FE) vehicles, as well as industrial energy storage systems, and 48V/96V applications.
The L9963F brings under-the-skin improvements to the industry-proven L9963E as a fully compatible replacement that requires no hardware or software changes for existing users of the L9963 series.
Features include:
- The ability to have one device to monitor from 4 to 14 stacked cells, addressing applications up to 48V.
- The ability to connect multiple ICs to permit arrays of up to 31 battery packs with a total of 434 series cells.
- Coulomb counting supports pack overcurrent detection in both ignition on and off states.
- A fully redundant cell-measurement path, with ADC swap, which provides enhanced safety and enables limp-home functionality.
- The ability to take power from the monitored battery and integrates circuitry to generate stable internal references and ensure measurement precision, including a voltage regulator and bootstrap.
- Support for cell-balancing current up to 200mA helps safeguard battery health.
- The ability to keep the integrated balancing-MOSFET drivers active for a timed period after entering low-power operation.
- 9 general-purpose I/O pins (GPIOs).
- An SPI interface for control and monitoring.
- Fault-detection and notification.
- ISO 26262 compliance.
- ASIL-D ready.
- A 10 mm x 10 mm TQFP64 package.
- 0 µs desynchronization delay between samples.
- A 16-bit voltage ADC with ±2 mV maximum error in the 0.5 V to 4.3 V range.
For more information, visit https://www.st.com/l9963f.
