SLVUCP9B November   2023  – October 2025 TPS25751

 

  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 Power Requirements
    2. 2.2 Setup
    3. 2.3 Header Information
    4. 2.4 Jumper Information
    5. 2.5 LED Information
    6. 2.6 Test Points
    7. 2.7 Switches and Push-Buttons
  9. 3Software
    1. 3.1 Software Description
      1. 3.1.1 Software Installation
      2. 3.1.2 Web Browser
      3. 3.1.3 Native Application
    2. 3.2 Software Development
    3. 3.3 Using the TPS25751 Application Customization Tool
      1. 3.3.1 Default View
      2. 3.3.2 Selecting a Configuration
      3. 3.3.3 Filling Out the Questionnaire
      4. 3.3.4 Advanced Configuration Mode
      5. 3.3.5 Flashing Configuration onto EVM
      6. 3.3.6 Additional Settings
        1. 3.3.6.1 Generating a New Configuration
        2. 3.3.6.2 Exporting and Importing Settings
        3. 3.3.6.3 Generating the Binary
        4. 3.3.6.4 Generating the VIF File
  10. 4Application Specific Use Case
    1. 4.1 Application Specific General Overview
    2. 4.2 TPS4S201 Short-to-Vbus Protection
    3. 4.3 TPS25751EVM and BQ257xxEVM Setup
      1. 4.3.1 Setting up with BQ25756(E)EVM
        1. 4.3.1.1 Hardware Setup with BQ25756(E)EVM
        2. 4.3.1.2 Software Setup with BQ25756(E)EVM
      2. 4.3.2 Setting up with BQ25792EVM or BQ25798EVM
        1. 4.3.2.1 Hardware Setup with BQ25792EVM and BQ25798EVM
        2. 4.3.2.2 Software Setup with BQ25792EVM and BQ25798EVM
      3. 4.3.3 Setting up with BQ25731EVM
        1. 4.3.3.1 Hardware Setup with BQ25731EVM
        2. 4.3.3.2 Software Setup with BQ25731EVM
      4. 4.3.4 Setting up With BQ25713EVM
        1. 4.3.4.1 Hardware Setup with BQ25713EVM
        2. 4.3.4.2 Software Setup with BQ25713EVM
    4. 4.4 Liquid Detection and Corrosion Mitigation Overview
      1. 4.4.1 Liquid Detection and Corrosion Mitigation Hardware Setup
      2. 4.4.2 Liquid Detection and Corrosion Mitigation Software Setup
  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
      1. 6.5.1 Documentation Support
    6. 6.6 Receiving Notification of Documentation Updates
    7. 6.7 Support Resources
  13. 7Revision History

4.4.1 Liquid Detection and Corrosion Mitigation Hardware Setup

Out of the box, the hardware on TPS25751EVM is set up for Liquid Detection and Corrosion Mitigation. R44 and R45 are populated to connect J3 Type-C SBU pins to TPS25751 GPIO4 and GPIO5 for liquid detection, R41 and R42 are not populated. TPD4S201 (U12) is in between TPS25751 and J3 Type-C port for protection in case of a short to VBUS. See also Figure 4-12 and Figure 4-13 for location details.

TPS25751EVM Liquid Detection Resistor Selection Figure 4-12 Liquid Detection Resistor Selection
TPS25751EVM Liquid Detection Resistor Location Figure 4-13 Liquid Detection Resistor Location
Note: Liquid Detection and Corrosion Mitigation and BC1.2 cannot be configured in the same system, so make sure R32, R33 and R34, R36 are not both populated at the same time.
Note: The resistor designator for Liquid Detection and BC1.2 are different between Rev A1 and Rev A2 hardware. Make sure to double check the EVM hardware revision when referring to Section 4.4.1,

On the TPS25751EVM the hardware is set to use specific GPIOs for MOSFET control and Liquid Detection feature. For user applications, some GPIOs can be configured differently while some are required for all designs, see Table 4-5 for details on specific test point and the configurability for custom designs. See also Section 4.4.2.

Table 4-5 Liquid Detection Test Points
Test Point on EVM Description Configurability
GPIO4 SBU1 measurement line between TPS25751 (LD1) and TPD4S201 (SBU1). This test point is protected from overvoltage and short conditions at the USB-C port. Not configurable for custom designs
GPIO5 SBU2 measurement line between TPS25751 (LD2) and TPD4S201 (SBU2). This test point is protected from overvoltage and short conditions at the USB-C port. Not configurable for custom designs
SBU1 SBU1 measurement line between TPD4S201 (C_SBU1) and the USB-C port (SBU1 pin). This test point is subjected to overvoltage and short conditions at the USB-C port. Not configurable for custom designs
SBU2 SBU2 measurement line between TPD4S201 (C_SBU2) and the USB-C port (SBU2 pin). This test point is subjected to overvoltage and short conditions at the USB-C port. Not configurable for custom designs
GPIO6 Connected to the gate pin of NFETs (QN1 and QN2) to enable pulldown. When enabled, PD is detecting short to VBUS/CC. Configurable for custom designs
GPIO7 Connected to the gate pin of P-Channel Field Effect Transistors (PFETs) (QP1 and QP2) to enable pullup. When enabled, PD is detecting short to GND. Configurable for custom designs
GPIO1 Connected to D9 LED to indicate if liquid is detected at J3 Type-C port. Configurable for custom designs
GPIO2 Act as an input pin for TPS25751 and connected to the FLT (pin 9) of TPD4S201. When OVP condition occurs at TPD4S201, TPS25751 enters Type-C error recovery, sets CCx pins to Hi-Z state and removes VBUS. Configurable for custom designs