14-Channel Li-Ion Battery Cell Controller IC

BMI7014 Preproduction
  • 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.

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The BMI7014 is a Li-Ion battery cell controller IC designed specifically for industrial applications, including energy storage systems and uninterruptible power supplies. It features monitoring of up to 14 battery cells and 7 temperatures, configurable averaging of cell voltage measurements through digital filtering, and a robust isolated 2.0 Mbps communication interface. Additionally, it supports onboard balancing of up to 300 mA.

Block Diagram

14-Channel Li-Ion Battery Cell Controller IC

14-Channel Li-Ion Battery Cell Controller IC
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Features

Voltage and Temperature Measurement

  • Up to 14 cell voltage measurement channels with integrated configurables averaging up to 256 samples (digital filtering)
  • Total stack voltage measurement
  • Seven ADC/GPIO/temperature sensor inputs
  • Accuracy tuned for ESS application

Integrated Balancing

  • Integrated low resistance cell balancing MOSFETs, rated up to 300 mA simultaneously
  • Balancing in sleep mode
    • 14x programmable balancing timer

Communication

  • Robust, isolated 2.0 Mbit/s 2-wire twisted-pair differential daisy chain communication
  • Inductive or capacitive coupling
  • Up to 63 nodes per daisy chain
  • Loopback support
  • 4 Mbit/s SPI also available

Supply Voltage

  • 9.6 V ≤ VPWR ≤ 61.6 V operation, 75 V transient

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