24 and 26-Channel Li-Ion Battery Cell Controller IC ASIL D

BMA712X new
Preproduction
  • This page contains information on a preproduction product. Specifications and information herein are subject to change without notice. For additional information please contact your sales representative.

Click image to open expanded view

The BMA7124 and BMA7126 are automotive lithium-ion battery cell controllers (BCCs) integrated circuits (ICs) supporting 24 and 26 cells, respectively, with high-accuracy analog-to-digital controllers (ADCs) on each voltage channel. This family of products offer the BMA742x variants with a discrete fourier transform (DFT) engine for electrochemical impedance spectroscopy (EIS). All the devices share pin compatibility and a shared software platform to enable a cost-effective EIS upgrade path. These consume only 4 mA (typ.) and support ASIL D functional safety.

Block Diagram

Choose a diagram:

BMA7124

BMA7124 Block Diagram

BMA7126

BMA7126 Block Diagram
Get diagram PDF

Features

Core Capabilities

  • From 8 to up to 26 cells per device (24 cells for BMA7424 and 26 cells for BMA7426)
  • 13 external temperature and auxiliary measurements
  • Dedicated, high-accuracy ADC per voltage measurement channel
  • Typical ±0.7 mV measurement error with ultra-low long-term drift
  • ISO 26262 ASIL D support for cell voltage and temperature measurements
  • External temperature and auxiliary voltage measurements
  • Isolated daisy chain up to 62 nodes or serial peripheral interface (SPI) communication
  • Diagnostics, functional safety and robustness
  • Low external bill of materials (BOM) cost

On-Board Passive Cell Balancing

  • Up to 300 mA peak cell balancing with diagnostics
  • Automatic odd/even balancing sequence
  • Timer, voltage, temperature, PWM-controlled balancing
  • Low integrated balancing MOSFET RdsON

Documentation

Quick reference to our documentation types

Filters

1 documents

Compact List

Design Resources

Hardware

Quick reference to our board types.
Filters

4 hardware offerings

Software

Quick reference to our software types.

Filters

1 software file

Note: For better experience, software downloads are recommended on desktop.

Support

What do you need help with?

  • Narrow your search
Search