SLUUAV7C December   2013  – November 2022 BQ40Z50 , BQ40Z50-R2

 

  1.   Abstract
  2.   Trademarks
  3. 1Features
    1. 1.1 Kit Contents
    2. 1.2 Ordering Information
    3. 1.3 Documentation
    4. 1.4 bq40z50 and bq296000 Circuit Module Performance Specification Summary
  4. 2bq40z50EVM Quick Start Guide
    1. 2.1 Items Needed for EVM Setup and Evaluation
    2. 2.2 Software Installation
    3. 2.3 EVM Connections
    4. 2.4 Update Firmware
  5. 3Battery Management Studio
    1. 3.1 Registers Screen
    2. 3.2 Setting Programmable bq40z50 Options
    3. 3.3 Calibration Screen
      1. 3.3.1 Voltage Calibration
      2. 3.3.2 Temperature Calibration
      3. 3.3.3 Current Calibration
    4. 3.4 Chemistry Screen
    5. 3.5 Firmware Screen
      1. 3.5.1 Programming the Flash Memory
      2. 3.5.2 Exporting the Flash Memory
    6. 3.6 Advanced Comm SMB Screen
  6. 4bq40z50EVM Circuit Module Schematic
    1. 4.1 Pre-Charge
    2. 4.2 LED Control
    3. 4.3 Emergency Shutdown
    4. 4.4 Testing Fuse-Blowing Circuit
    5. 4.5 PTC Thermistor
  7. 5Circuit Module Physical Layouts
    1. 5.1 Board Layout
    2. 5.2 Schematic
  8. 6Bill of Materials
  9. 7Related Documentation from Texas Instruments
  10. 8Revision History

4.3 Emergency Shutdown

The Emergency Shutdown function allows the user to disable the charge and discharge FETs with an external GPIO pin. The EMSHUT and NR bits must be set high in the DA Configuration register to enable this feature. Press the SHUTDOWN pushbutton switch for one second to disable these FETs, and press it again for one second to enable them.

Note:

Remember to remove the SYS PRES-to-PACK– short, if present.