New Product Introduction

Infineon TLE9012AQU

The TLE9012AQU is a multi-cell battery monitoring and balancing system IC

Product sample of Infineon's TLE9012AQU system IC

As a multi-cell battery monitoring and balancing system IC the TLE9012AQU is designed for Li-Ion battery packs used in full hybrid electric vehicles (FHEV), plug-in hybrid electric vehicles (PHEV), battery electric vehicles (BEV) as well as in mild hybrid electric vehicles (MHEV) and other batteries such as12 V Lithium-Ion batteries and stationary batteries. The TLE9012AQU is qualified for automotive applications according to AEC-Q100.

The TLE9012AQU provides the main function of monitoring the temperature of the battery and voltage of each cell as well as the communication to the host controller.



  • General
    • Monitors up to 12 cells connected in series
    • 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
  • Balancing
    • Integrated balancing switch allowing up to 150 mA balancing current
  • Communication Bus (iso UART)
    • Differential robust serial interface for communication between battery blocks
    • High speed communication with 2 Mbps
    • Power balanced communication scheme
  • Additional 4 GPIO pins to e.g. connect an external EEPROM
  • Green product (RoHS-compliant)
  • ISO-26262 ready, supporting ASIL-C BMS safety applications1)



Parametrics TLE9012AQU
Channels 12.0
Input Vcc min / max 4.75 V / 60.0 V
Voltage Class 75.0 V


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