TLE9012AQU

The TLE9012AQU belongs to Infineon´s Battery Management Sensing IC product family

The TLE9012AQU is a multi-channel battery monitoring and balancing system IC designed for Li-Ion battery packs used in many applications on the automotive world (Electric Vehicles of any kind MHEV, HEV, PHEV and BEV, etc), industrial (Energy storage systems) and consumer (i.e. ebike BMS, home energy storage, etc).

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 guaranteeing the safety of the persons around the controlled battery.

Summary of Features

General

• Monitors up to 12 series connected cells
• Supports communication of up to 20 devices
• Supports hot plugging

Voltage measurement

• 16 bit high resolution ADC measurement for each cell
• High accuracy measurement for SoC (State-of-Charge) and SoH (State-of-Health) calculation
• Temperature compensated measurements
• Built in noise filtering
• Selectable measurement bit length

Temperature measurement

• 5 temperature measurement channels for connection to external NTC
• Internal temperature measurement and monitoring

Balancing

• Integrated balancing switch allowing up to 150 mA balancing current

Communication Interface (iso UART)

• Differential robust serial interface for communication between battery blocks
• High speed communication up to 2 Mbps
• Power balanced communication scheme

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
• Emergency mode for communication
• Green product (RoHS-compliant)
• AEC-Q100 qualified
• ISO-26262 ready, supporting ASIL-C BMS safety applications

Benefits

• Robust communication without need of transformers or common mode chokes
• State of the art 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

Potential Applications

• Mild Hybrid Electric Vehicle (MHEV)
• Hybrid Electric Vehicle (HEV)
• Plug-in Hybrid Electric Vehicle (PHEV)
• Battery Electric Vehicle (BEV)
• 12V Li-Ion battery systems
• Energy Storage System (ESS)
• Home Energy Storage system
• eBike battery management system

Diagrams

Parametrics