SLUUBU0A June   2018  – July 2022 BQ27Z561

 

  1.   BQ27Z561EVM-011 EVM Single-Cell Impedance Track™ Technology
  2.   Trademarks
  3. 1Features
    1. 1.1 Kit Contents
  4. 2BQ27Z561-Based Circuit Module
    1. 2.1 Circuit Module Connections
    2. 2.2 Pin Description
  5. 3Circuit Module Physical Layout, Bill of Materials and Schematic
    1. 3.1 Board Layout
    2. 3.2 Schematic
    3. 3.3 Bill of Material
    4. 3.4 BQ27Z561 Circuits Module Performance Specification Summary
  6. 4EVM Hardware and Software Setup
    1. 4.1 System Requirements
    2. 4.2 Software Installation
  7. 5Troubleshooting Unexpected Dialog Boxes
  8. 6Hardware Connection
    1. 6.1 Connecting the BQ27Z561 Circuit Module to a Battery Pack
    2. 6.2 Description of EVM Jumpers
  9. 7Operation
    1. 7.1 Starting the Program
    2. 7.2 Setting Programmable BQ27Z561 Options
      1. 7.2.1 Important Data Memory Parameters to Change
    3. 7.3 Setting the Chemistry
  10. 8Related Documentation from Texas Instruments
  11. 9Revision History

6.2 Description of EVM Jumpers

The following section describes the critical jumpers and their purpose on this board.

  1. J2 - Chip Enable (CE): This jumper allows the user to connect the CE pin to ground, BAT_SNS, or directly to BAT+. Grounding or floating the CE pin will disable and reset the device. Connect the jumper across positions 4-3 or 2-1 to enable the device. Alternatively, it can be tied directly to a host system for an additional low-power state, if needed.
  2. J11 - I2C Clock Pull-up (SCL): This jumper applies a 10k pullup to J13 on the I2C communication line.
  3. J12 - I2C Data Pull-up (SDA): This jumper applies a 10k pullup to J13 on the I2C communication line.
  4. J6 - BQ27Z561 Pulse Pull-up (PULS): This jumper applies a 10k pullup to J13 on the PULS pin of the BQ27Z561.
  5. J7 - BQ27Z561 Interrupt Pull-up (INT): This jumper applies a 10k pullup to J13 on the INT pin of the BQ27Z561.
  6. J9 & J10 - Sense Resistor: These jumpers can be configured to use either a high-side or low-side sense resistor. Set the shunt on J9 to position 2-3 and set the shunt on J10 to 1-2 to use a low-side sense. Set the shunt on J9 to position 1-2 and set the shunt on J10 to position 2-3 to use a high-side sense.
  7. J3 - BQ27Z561 VDD Connection: This jumper ties the BQ27Z561 BAT pin to CELL+. This shunt can be removed to allow the use of another instrument to monitor the current consumption of the device under various operating conditions.
  8. J5 - BQ27Z561 TS Connection: This jumper allows the use of the external RT1 thermistor. Removing the shunt allows the use of either the internal temperature sense or an external sense connected to pins 2-3 of J8.
  9. J13 - Pullup Level Selector: This jumper allows the user to choose between using the SYS+ or external voltage as the pullup voltage. Set the shunt to position 1-2 to use SYS+, and set the shunt to position 3-2 to use EXT_VCC. Use caution when applying voltage to EXT_VCC as it is connected to the EV2400.