18-Channel Li-Ion Battery Cell Controller IC

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

Roll over image to zoom in

Block Diagram

BMI7018

BMI7018 Block Diagram

Features

Key Features

  • Monitoring of up to 18 battery cells and 8 temperatures
  • Configurable averaging of cell voltage measurements (digital filtering)
  • Robust isolated 2.0 Mbit/s communication interface
  • Onboard balancing up to 360 mA peak

Voltage and Temperature Measurement

  • From 4 to 18 Cell voltage measurement channels with integrated configurable averaging
  • Total stack voltage measurement
  • Nine ADC/GPIO/temperature sensor inputs
  • Accuracy tuned for ESS application

On-board Passive Cell Balancing

  • Up to 360 mA peak cell balancing with diagnostics
  • Automatic odd/even balancing sequence
  • Timer, voltage, temperature, PWM-controlled balancing
  • Low Integrated Balancing MOSFET RdsON
  • Balancing in sleep mode

Communication

  • Robust, isolated 2.0 Mbit/s 2-wire twisted-pair differential daisy chain communication
  • Inductive or capacitive coupling
  • Up to 62 nodes per daisy chain, loop-back support
  • 4 Mbit/s SPI also available

Supply Voltage

  • 9.0 V ≤ VPWR ≤ 90 V operation, max transient 94 V

Documentation

Quick reference to our documentation types.

3 documents

Support

What do you need help with?