SLUUD64 December   2024 BQ41Z90

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
      1. 1.4.1 Before You Begin
  6. 2BQ41Z90EVM Quick Start Guide
    1. 2.1 Items Needed for EVM Setup and Evaluation
    2. 2.2 Software Installation
    3. 2.3 EVM Connections
      1. 2.3.1 Jumper Description
    4. 2.4 Update Firmware
  7. 3Hardware
    1. 3.1 BQ41Z90 Production Calibration Guide
  8. 4Software
    1. 4.1 Battery Management Studio
      1. 4.1.1 Registers Screen
      2. 4.1.2 Setting Programmable BQ41Z90 Options
      3. 4.1.3 Calibration Screen
        1. 4.1.3.1 Voltage Calibration
        2. 4.1.3.2 Temperature Calibration
        3. 4.1.3.3 Current Calibration
      4. 4.1.4 Chemistry Screen
      5. 4.1.5 Firmware Screen
        1. 4.1.5.1 Programming the Flash Memory
        2. 4.1.5.2 Exporting the Flash Memory
      6. 4.1.6 Advanced Comm SMB Screen
  9. 5Hardware Design Files
    1. 5.1 BQ41Z90EVM Circuit Module Schematic
    2. 5.2 Circuit Module Physical Layouts
      1. 5.2.1 Board Layout
      2. 5.2.2 Schematic
    3. 5.3 Bill of Materials
  10. 6Additional Information
    1. 6.1 Trademarks
  11. 7Related Documentation from Texas Instruments

2.3.1 Jumper Description

  • J42 and J33

    Cell Simulator: Install a jumper for the series cell needed.

    For instance, if 3S configuration is needed. See Figure 2-4.


BQ41Z90 Cell Simulator Jumper Connections

Figure 2-4 Cell Simulator Jumper Connections
  • J15, J17, J19, J20, J18, and J16

    Install these jumpers for thermistors as needed.

  • J30

    DFETOFF and CFETOFF are intended to be left floating unless user wants to manually turn off the FETs.

  • J35

    If RST_SD switch is installed, do not press the button for more than 5 seconds. This action can cause device to permanently lock up on initial units. See Figure 2-5.


BQ41Z90 RST_SD Button and Jumper

Figure 2-5 RST_SD Button and Jumper
  • J22

    Installing a jumper here means the device constantly wakes up, preventing entry to shutdown mode.

  • J48

    Enables the output of secondary protector (U14). U14 is not installed on board in version BMS081-E1.

  • J3, J4, J5, J6

    For SPI, connect jumper as shown below. For SDK, please connect in the lower two. See Figure 2-6.


BQ41Z90 SPI Jumper Connection

Figure 2-6 SPI Jumper Connection
  • J43

    Install jumper when using J-link.

  • J12 and J13

    Upper two are for UART. Lower two are for J-link.

  • J29, J28, J24, J23

    I2C pull-ps. These are not needed if using EV2400. EV2400 has integrated pull-ups.

  • J2

    Needed for Device power-up. Keep the jumper installed. The jumper is useful for measuring power consumption.

  • J32

    Do not install this jumper while flashing the device.

  • J26, J41, J39, J27, J34, J36, J31

    All of these jumpers are needed to determine series or parallel FET configuration. See Figure 2-7 and Figure 2-8.


BQ41Z90 Parallel FET Configuration

Figure 2-7 Parallel FET Configuration

BQ41Z90 Series FET Configuration

Figure 2-8 Series FET Configuration

BQ41Z90 Parallel FET Configuration

Figure 2-9 Parallel FET Configuration

BQ41Z90 Series FET Configuration

Figure 2-10 Series FET Configuration
Note: SDK is DNP on board version BMS081-E1.