SLVUCP8 September   2024 TPS26750

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 Additional Images
    2. 2.2 Power Requirements
    3. 2.3 Setup
    4. 2.4 Header Information
    5. 2.5 Jumper Information
    6. 2.6 Push Buttons
    7. 2.7 Interfaces
    8. 2.8 Debug Information
    9. 2.9 Test Points and LEDS
  9. 3Software
    1. 3.1 Software Description
    2. 3.2 Software Installation
      1. 3.2.1 Web Browser
      2. 3.2.2 Native Application
    3. 3.3 Software Development
    4. 3.4 Using the Application Customization Tool
      1. 3.4.1 Default View
      2. 3.4.2 Selecting a Configuration
      3. 3.4.3 Filling Out the Questionnaire
      4. 3.4.4 Advanced Configuration Mode
      5. 3.4.5 Flashing Configuration to TPS26750
      6. 3.4.6 Additional Settings
        1. 3.4.6.1 Generating a New Configuration
        2. 3.4.6.2 Exporting and Importing Settings
        3. 3.4.6.3 Generating the Binary
        4. 3.4.6.4 Generating the VIF File
  10. 4Application Specific Use Cases
    1. 4.1 Liquid Detection and Corrosion Mitigation Overview
      1. 4.1.1 Liquid Detection and Corrosion Mitigation Hardware Setup
      2. 4.1.2 Liquid Detection and Corrosion Mitigation Software Setup
      3. 4.1.3 Liquid Detection Detailed Implementation
        1. 4.1.3.1 Liquid Detection Config Register (0x98)
    2. 4.2 Use With the BQ25756EVM
      1. 4.2.1 Hardware Setup with BQ25756EVM
      2. 4.2.2 Software Setup with the BQ25756EVM
  11. 5Hardware Design Files
    1. 5.1 Schematics
    2. 5.2 PCB Layouts
    3. 5.3 Bill of Materials (BOM)
  12. 6Additional Information
    1. 6.1 Trademarks
    2. 6.2 Electrostatic Discharge Caution
    3. 6.3 Terminology
    4. 6.4 Device Support
      1. 6.4.1 Third-Party Products Disclaimer
      2. 6.4.2 Supplemental Content
    5. 6.5 Documentation Support
    6. 6.6 Receiving Notification of Documentation Updates
    7. 6.7 Support Resources

4.2.2 Software Setup with the BQ25756EVM

To setup the software configuration, follow the instructions below.

  1. Open the Application Customization Tool and select Configuration Index 1 or 3 for Question 1 (A figure with a BQ block included).
  2. Fill out the questionnaire from Q2 to Q10. For more details on each question configuration, refer to Section 3.4.3. All the questions must be filled out to flash or export.
  3. Questions 11 through 18 pertain to Battery Charger (BQ) settings.
  4. For Question 11, select BQ25756.
  5. For Question 12, select the INDPM configuration for the BQ25756.
    1. For example, if the user selects 5% - INDPM is set to 5% above the negotiated PD Contract Current and TPS26750 negotiates a PD contract at 3A, then the INDPM is set to 3.15A.
    2. This questionnaire configures register 0x06 - IAC_DPM of the BQ25756.
  6. For Question 13, select the VINDPM configuration for the BQ25756.
    1. For example, if the user selects 5% - VINDPM is set to 5% below the negotiated PD Contract Voltage and TPS26750 negotiates a PD contract at 5V, the VINDPM is set to 4.75V.
    2. This questionnaire configures register 0x08 - VAC_DPM of the BQ25756.
  7. For question 14, enter the FB Voltage Regulation Limit in units of Voltage (1.504V through 1.566V, 2mV/bit).
    1. This questionnaire configures register 0x00 - VFB_REG of the BQ25756.
  8. For question 15, enter the Charge Current Limit in units of Ampere (0.4A through 20A, 50mA/bit)
    1. This questionnaire configures register 0x02 - ICHG_REG of the BQ25756.
  9. For question 16, enter the Charge Termination Current Limit in units of Ampere (0.25A through 10A, 50mA/bit).
    1. This questionnaire configures register 0x12 - ITERM of the BQ25756.
  10. For question 17, enter the Precharge Current Limit in units of Ampere (0.25A through 10A, 50mA/bit).
    1. This questionnaire configures register 0x10 - IPRECHG of the BQ25756.
  11. For question 18, enter the Dead Battery Clear Threshold in units of Voltage (2.88V through 19.2V, 64mV/bit).
    1. This questionnaire configures register 0x27 - Global System Configuration of the TPS26750 and sets the Enable Dead Battery Clear [111] field to '1'.
    2. Upon boot-up from dead battery mode (The TPS26750 receives power from VBUS first instead of VIN_3V3), the TPS26750 reads register 0x33 - VBAT_ADC of the BQ25756.
    3. If VBAT voltage is greater or higher than set threshold in Q18, then the TPS26750 automatically clears the dead battery flag, otherwise the dead battery flag remains. Refer to the TPS26750 Technical Reference Manual for details.
  12. For flashing the configuration to the TPS26750EVM or exporting the binary, refer to Section 3.4.6.