Infineon – TLE9012AQU – Battery monitoring and balancing IC
The TLE9012AQU is a multi-channel battery monitoring and balancing system IC designed for Li-Ion battery packs used in automotive, industrial and consumer applications. TLE9012AQU fulfills four main functions: cell voltage measurement, temperature measurement, cell balancing and isolated communication to main battery controller. Additionally, TLE9012AQU provides the necessary diagnosis tools to ensure proper function of the controlled battery.
Features:
- Monitors up to 12 series connected cells
- Supports communication of more than 20 devices
- Supports hot plugging
- Voltage calculation for SoC (State-of-Charge) and SoH (State-of-Health)
- On-chip temperature measurement and monitoring
- Integrated balancing switch allowing up to 150 mA balancing current
- Communication interface (iso UART) for high-speed communica-tion up to 2 Mbps
- ISO 26262 ready, supporting ASIL-C BMS safety applications
Safety features:
- Two independent internal voltage references
- Block voltage measurement based on different ADC
- Configurable analog OV/UV comparators
- End-to-end CRC secured communication
- CRC secured configuration registers
- Internal open load detection
Benefits:
- Robust communication without need of transformers or common mode chokes
- Best in class voltage measurement accuracy even after soldering thanks to stress sensor technology
- Integrated diagnosis easing functional safety design
- Integrated UART communication for systems with a microcontroller on local ground
Applications:
- Mild Hybrid Electric Vehicle (MHEV)
- Hybrid Electric Vehicle (HEV)
- Plug-in Hybrid Electric Vehicle (PHEV)
- Battery Electric Vehicle (BEV)
- 12 V Li-Ion battery systems
- Energy Storage System (ESS)
- Home Energy Storage System (HESS)
- eBike battery management system
- Commercial, construction and agricultural vehicles (electric bus, truck, forklift, …)
