Battery management ICs

Infineon’s battery management ICs offer an optimized solution for cell monitoring and balancing

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Overview

Battery management systems for lithium-ion cells require monitoring of voltage, current, and temperature to determine state of charge and health. Accurate cell voltage measurement ensures safe operation and compliance with functional safety requirements, critical for functions like cell balancing. Infineon’s dedicated battery management ICs provide a comprehensive monitoring and balancing solution for various applications.

Key Features

  • Enabling lowest system cost
  • Benchmark accuracy measurements
  • Precise 16-bit Delta-Sigma ADC
  • Parallel ADC architecture
  • Ultra-fast & synched cell readout
  • Built-in digital filters
  • High noise immunity
  • Embedded fault detection
  • Iso-UART for robust communication
  • Industry-benchmark quality
  • Supports up to ASIL D safety levels
  • Compact footprint for lean design

Products

About

What are battery management ICs designed for safety-relevant applications?

Battery management systems (BMS) monitor and control Li-ion batteries across automotive, industrial, and consumer applications, ensuring efficient, safe battery power delivery. Applications include electric cars, trucks, e-bikes, and non-road vehicles, as well as machinery like forklifts and energy storage.

As a leader in battery management technology, we develop devices to meet customer demands and 21st-century challenges. Our battery management integrated circuits enable efficient BMS layout for voltage and temperature sensing, cell balancing, and communication. Our battery balancing ICs support battery health monitoring and battery cell management with precision accuracy. Our Li-ion battery management ICs meet functional safety requirements up to ASIL-D and are ISO 26262-compliant, fitting seamlessly into full system solutions for BMS – including hardware and software – with a focus on safety and functionality.

BMS
“Longevity” for Automotive Smart Power products
Complex Device Driver BMS

What is the best Li‑ion battery monitoring and balancing IC for up to 9 cells?

The TLE9009DQU is a precision battery monitoring IC designed for monitoring and balancing up to 9 cells in Li-ion battery packs. This battery management IC is widely used in automotive BMS, industrial battery monitoring systems, and consumer applications.
This BMS IC performs four primary functions:

  • Cell voltage measurement – Precise monitoring for state-of-charge calculation
  • Temperature monitoring – Critical for battery health monitoring and thermal protection
  • Cell balancing – Active battery balancing IC functionality for optimal pack performance
  • Isolated communication – Iso-UART interface to the main battery management circuit

The TLE9009DQU includes comprehensive diagnostic tools, ensuring safe operation and protecting personnel near the battery system. This Li-ion battery management IC supports ASIL-D functional safety requirements for automotive battery management systems.

TLE9009DQU

What is the best Li-ion Battery Monitoring and Balancing IC for up to 12 cells? 

The TLE9012DQU is a multi-channel battery monitoring and balancing system IC designed for lithium-ion battery packs used in various applications across automotive, industrial, and consumer products. This battery balancing IC monitors and balances up to 12 cells with benchmark accuracy. The module fulfills four main functions for battery cell management:

  • Cell voltage measurement – High-precision 16-bit Delta-Sigma ADC for accurate battery monitoring
  • Temperature measurement – Continuous battery health monitoring for thermal safety
  • Cell balancing – Integrated battery balancing IC functionality for pack optimization
  • Isolated communication – Robust Iso-UART interface to the main BMS controller

Additionally, the TLE9012DQU includes essential diagnostic tools to ensure proper function, guaranteeing the safety of personnel. Ideal for automotive BMS applications requiring ASIL-D compliance.

TLE9012DQU
TLE9012DQU Complex Device Driver

TLE9016DQU Monitoring & Balancing IC up to 16 cells

The TLE9016DQU is an advanced battery monitoring IC that monitors up to 16 channels in Li-ion battery packs. This battery balancing IC delivers precision cell voltage measurement and battery health monitoring for demanding automotive and industrial battery management systems.

Key functions of this BMS IC include:

  • Cell voltage measurement – Parallel ADC architecture for ultra-fast, synchronized readout
  • Temperature monitoring – Integrated battery health monitoring for thermal management
  • Cell balancing – Precision battery balancing IC for optimal pack performance
  • Isolated communication – Iso-UART interface for robust battery management circuit connectivity

To ensure safe operation, the TLE9016DQU includes comprehensive diagnostic tools to safeguard personnel around the battery system. This Li-ion battery management IC supports functional safety requirements up to ASIL-D for automotive BMS applications.

TLE9016DQU

What is the best Iso-UART Battery Monitoring transceiver IC for up to 18 cells?

The TLE9018DQK is a multi-channel battery monitoring IC engineered to monitor up to 18 channels in lithium-ion battery packs. This battery management IC serves diverse automotive, industrial, and consumer applications requiring high cell counts.

The module performs four primary functions:

  • Cell voltage measurement – Precision monitoring with 16-bit Delta-Sigma ADC accuracy
  • Temperature assessment – Continuous battery health monitoring for safe operation
  • Cell balancing – Integrated battery balancing IC for pack optimization and longevity
  • Isolated communication – Iso-UART transceiver for robust battery management circuit integration

Moreover, the TLE9018DQK includes essential diagnostic tools to ensure proper operation, safeguarding personnel around the battery system. Ideal for large-format automotive BMS and industrial energy storage applications.

TLE9018DQK

Which Iso‑UART transceiver IC should be used for battery management system communication?

The TLE9015DQU is an Iso-UART communication IC designed to enable robust, isolated communication within battery management systems. This IC serves as the communication backbone connecting battery monitoring ICs to the main BMS controller in automotive and industrial applications.

Key features of this battery management circuit component:

  • Isolated UART interface – Robust communication for battery monitoring system architectures
  • High noise immunity – Reliable data transmission in electrically noisy environments
  • Seamless integration – Compatible with Infineon's TLE9009, TLE9012, TLE9016, and TLE9018 battery monitor ICs
  • Functional safety support – Designed for ASIL-D-compliant automotive BMS applications

The TLE9015DQU is essential for daisy-chain battery management circuit topologies, enabling scalable battery cell management across multiple modules. Ideal for electric vehicle battery management systems, industrial energy storage, and high-voltage Li-ion battery monitoring applications.

Find information relating to the planned long-term availability of semiconductor products: 

TLE9015DQU

What are battery management ICs designed for safety-relevant applications?

Battery management systems (BMS) monitor and control Li-ion batteries across automotive, industrial, and consumer applications, ensuring efficient, safe battery power delivery. Applications include electric cars, trucks, e-bikes, and non-road vehicles, as well as machinery like forklifts and energy storage.

As a leader in battery management technology, we develop devices to meet customer demands and 21st-century challenges. Our battery management integrated circuits enable efficient BMS layout for voltage and temperature sensing, cell balancing, and communication. Our battery balancing ICs support battery health monitoring and battery cell management with precision accuracy. Our Li-ion battery management ICs meet functional safety requirements up to ASIL-D and are ISO 26262-compliant, fitting seamlessly into full system solutions for BMS – including hardware and software – with a focus on safety and functionality.

BMS
“Longevity” for Automotive Smart Power products
Complex Device Driver BMS

What is the best Li‑ion battery monitoring and balancing IC for up to 9 cells?

The TLE9009DQU is a precision battery monitoring IC designed for monitoring and balancing up to 9 cells in Li-ion battery packs. This battery management IC is widely used in automotive BMS, industrial battery monitoring systems, and consumer applications.
This BMS IC performs four primary functions:

  • Cell voltage measurement – Precise monitoring for state-of-charge calculation
  • Temperature monitoring – Critical for battery health monitoring and thermal protection
  • Cell balancing – Active battery balancing IC functionality for optimal pack performance
  • Isolated communication – Iso-UART interface to the main battery management circuit

The TLE9009DQU includes comprehensive diagnostic tools, ensuring safe operation and protecting personnel near the battery system. This Li-ion battery management IC supports ASIL-D functional safety requirements for automotive battery management systems.

TLE9009DQU

What is the best Li-ion Battery Monitoring and Balancing IC for up to 12 cells? 

The TLE9012DQU is a multi-channel battery monitoring and balancing system IC designed for lithium-ion battery packs used in various applications across automotive, industrial, and consumer products. This battery balancing IC monitors and balances up to 12 cells with benchmark accuracy. The module fulfills four main functions for battery cell management:

  • Cell voltage measurement – High-precision 16-bit Delta-Sigma ADC for accurate battery monitoring
  • Temperature measurement – Continuous battery health monitoring for thermal safety
  • Cell balancing – Integrated battery balancing IC functionality for pack optimization
  • Isolated communication – Robust Iso-UART interface to the main BMS controller

Additionally, the TLE9012DQU includes essential diagnostic tools to ensure proper function, guaranteeing the safety of personnel. Ideal for automotive BMS applications requiring ASIL-D compliance.

TLE9012DQU
TLE9012DQU Complex Device Driver

TLE9016DQU Monitoring & Balancing IC up to 16 cells

The TLE9016DQU is an advanced battery monitoring IC that monitors up to 16 channels in Li-ion battery packs. This battery balancing IC delivers precision cell voltage measurement and battery health monitoring for demanding automotive and industrial battery management systems.

Key functions of this BMS IC include:

  • Cell voltage measurement – Parallel ADC architecture for ultra-fast, synchronized readout
  • Temperature monitoring – Integrated battery health monitoring for thermal management
  • Cell balancing – Precision battery balancing IC for optimal pack performance
  • Isolated communication – Iso-UART interface for robust battery management circuit connectivity

To ensure safe operation, the TLE9016DQU includes comprehensive diagnostic tools to safeguard personnel around the battery system. This Li-ion battery management IC supports functional safety requirements up to ASIL-D for automotive BMS applications.

TLE9016DQU

What is the best Iso-UART Battery Monitoring transceiver IC for up to 18 cells?

The TLE9018DQK is a multi-channel battery monitoring IC engineered to monitor up to 18 channels in lithium-ion battery packs. This battery management IC serves diverse automotive, industrial, and consumer applications requiring high cell counts.

The module performs four primary functions:

  • Cell voltage measurement – Precision monitoring with 16-bit Delta-Sigma ADC accuracy
  • Temperature assessment – Continuous battery health monitoring for safe operation
  • Cell balancing – Integrated battery balancing IC for pack optimization and longevity
  • Isolated communication – Iso-UART transceiver for robust battery management circuit integration

Moreover, the TLE9018DQK includes essential diagnostic tools to ensure proper operation, safeguarding personnel around the battery system. Ideal for large-format automotive BMS and industrial energy storage applications.

TLE9018DQK

Which Iso‑UART transceiver IC should be used for battery management system communication?

The TLE9015DQU is an Iso-UART communication IC designed to enable robust, isolated communication within battery management systems. This IC serves as the communication backbone connecting battery monitoring ICs to the main BMS controller in automotive and industrial applications.

Key features of this battery management circuit component:

  • Isolated UART interface – Robust communication for battery monitoring system architectures
  • High noise immunity – Reliable data transmission in electrically noisy environments
  • Seamless integration – Compatible with Infineon's TLE9009, TLE9012, TLE9016, and TLE9018 battery monitor ICs
  • Functional safety support – Designed for ASIL-D-compliant automotive BMS applications

The TLE9015DQU is essential for daisy-chain battery management circuit topologies, enabling scalable battery cell management across multiple modules. Ideal for electric vehicle battery management systems, industrial energy storage, and high-voltage Li-ion battery monitoring applications.

Find information relating to the planned long-term availability of semiconductor products: 

TLE9015DQU

Documents

Documents

Design resources

Developer community

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