L99BM2C-TR [STMicroelectronics]

L99BM2C is a current, voltage, charge and isolation monitor for HV battery packs.

It is part of the L99BM2 chipset for battery management systems and can be inserted as an addressable element of the same isolated daisy chain (VIF).

• -40°C to +125°C operating temperature range
• HBM ESD classification level 2
• CDM ESD classification level C4B
• 2 independent current sense ADCs
  • 18-bit resolution
  • Input range = ±100 mV
  • Integrated programmable digital filtering with cut-off frequency from 3.5 kHz to 5 Hz for instantaneous current measurement
  • Fully redundant architecture with cross-check on every current sample
• Integrated Coulomb Counter
• Fully redundant short circuit detector with programmable threshold and ultra fast reaction time
• 2 programmable (level/PWM encoded) FAULT outputs
• 10 Gate pre-drivers also compatible with optocouplers
• 11 fully differential analog inputs
• 7 configurable GPIO
• SPI and I2C Controller peripherals to interface up to two external EEPROM, L99BM2P pyro driver, sensors
• SPI Target for direct MCU interface
• 3.3V (VTREF) and 5V (V5V) LDOs for external sensors supply and biasing
• Embedded NVM for configuration parameters storage and runtime configuration integrity check
• Ultra-fast vertical interface peripheral for isolated communication
• Compatible with 18S L99BM218 cell monitoring chip with a max de-synchronization time of 7 us at system level