Battery management ICs are robust for automotive use, says Infineon
Battery management ICs by Infineon Technologies enable battery cell monitoring and balancing. The series includes the TLE9012DQU and TLE9015DQU, which mark a milestone for Infineon, says senior vice president and general manager, Autotmotive Power Integration and Supply, Finn Felsberg.
The ICs combine measurement performance with the highest application robustness, claimed the company, and are a competitive system-level solution for battery modules, cell-to-pack and cell-to-car battery topologies.
The ICs are suitable for a wide range of industrial, consumer and automotive applications such as mild hybrid electric vehicles (MHEV), hybrid electric vehicles (HEV), plug-in hybrid electric vehicles (PHEV) and battery-powered electric vehicles (BEV). Additional applications include energy storage systems and battery management systems for electric two- and three-wheelers.
“Customers benefit from the interoperability of Infineon’s components as well as from the broad software offering,” continued Felsberg. “As a result, development efforts can be minimised and time to market can be reduced.”
The battery management ICs can be used in safety relevant applications. The automotive battery management system devices meet safety requirements up to ASIL-D and are ISO26262-compliant. They are optimised to work together with the Aurix family of microcontrollers and functional safety capable power management ICs thanks to the Complex Device Driver. This provides voltage and temperature sensing, as well as balancing and communication.
The multi-channel battery monitoring and balancing system IC, the TLE9012DQU is capable of performing highly accurate voltage measurements for state of charge and state of health calculation. It is an ASIL-D compliant monitoring and balancing IC designed for Li-Ion battery packs. It can be controlled directly by a microcontroller via UART or via an isolated UART interface with the TLE9015DQU iso-UART transceiver IC.
The design of the TLE9012DQU is based on a parallel ADC architecture. This enables high accuracy through 16-bit DS ADC technology, excellent noise rejection through high internal oversampling, and advanced sync-on-sample at less than 10 micro seconds across an entire battery pack, said Infineon. The design reduces the dependence on external components for end-of-life accuracy, and could even eliminate it completely, said Infineon.
The TLE9015DQU is a battery monitoring transceiver IC designed for connecting several TLE9012DQU devices in a daisy chain inside a Li-Ion battery. It uses its two UART and Iso-UART interface pairs to support ring communication, improving the cost efficiency of the system. By integrating an error management unit including several inputs and outputs programmable on each TLE9012DQU, the module also enables bidirectional information flow.
The TLE9012DQU and TLE9015DQU are released and available for use in production designs.
