SLUUCW4 November   2023 BQ27Z558

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  7. 2Hardware
    1. 2.1 Hardware Setup
      1. 2.1.1 Hardware Requirements
      2. 2.1.2 Connecting the BQ27Z558 Circuit Module to a Battery Pack
      3. 2.1.3 EVM Jumpers Description
    2. 2.2 Chemical ID
      1. 2.2.1 Chemical ID Selection Process Description
      2. 2.2.2 Hardware Requirements and Setup
      3. 2.2.3 Logging Data in bqStudio
      4. 2.2.4 GPCChem Tool
      5. 2.2.5 Programming a Chemical ID
      6. 2.2.6 Further Resources for Chemical ID Process
    3. 2.3 Calibrating Gauge Measurements
      1. 2.3.1 Voltage Calibration
      2. 2.3.2 Current Calibration
    4. 2.4 Learning Cycle and Golden Image
      1. 2.4.1 Learning Cycle Process Description
      2. 2.4.2 Data Memory Configuration
      3. 2.4.3 Learning Cycle Steps
      4. 2.4.4 Low Temperature Optimization
      5. 2.4.5 Creating the Golden Image File
      6. 2.4.6 Programming the Golden Image File
    5. 2.5 BQ27Z558-Based Circuit Module
      1. 2.5.1 Circuit Module Connections
      2. 2.5.2 Pin Description
  8. 3Software
    1. 3.1 Software Setup
      1. 3.1.1 System Requirements
      2. 3.1.2 Software Installation
    2. 3.2 Troubleshooting Unexpected Dialog Boxes
    3. 3.3 Using bqStudio
      1. 3.3.1 Starting the Program
      2. 3.3.2 Setting Programmable BQ27Z558 Options
    4. 3.4 Gauge Communication
      1. 3.4.1 Advanced Communication in bqStudio
      2. 3.4.2 Standard Data Commands
      3. 3.4.3 Manufacturer Access Commands
      4. 3.4.4 Further Resources on Gauge Communication
  9. 4Hardware Design Files
    1. 4.1 Schematic
    2. 4.2 PCB Layout
    3. 4.3 Bill of Material
  10. 5Additional Information
    1.     Trademarks

2.1.3 EVM Jumpers Description

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 disables and resets the device. Connect the jumper across positions 4-3 or 2-1 to enable the device. Alternatively, the jumper 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 - BQ27Z558 Pulse Pull-up (PULS): This jumper applies a 10k pullup to J13 on the PULS pin of the BQ27Z558.
  5. J7 - BQ27Z558 Interrupt Pull-up (INT): This jumper applies a 10k pullup to J13 on the INT pin of the BQ27Z558.
  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 - BQ27Z558 VDD Connection: This jumper ties the BQ27Z558 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 - BQ27Z558 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 EXT_VCC is connected to the EV2400.