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

3.4.3 Filling Out the Questionnaire

After making a selection for Question 1, answer the remaining questions to enable flashing a TPS26750EVM or to generate and save a full configuration. Based on the selection for Question 1, some of the remaining questions can be unavailable for selection.

Questionnaire Explanation

Question 1: Section 3.4.2

Question 2: What is the maximum power in Watts that you want to source from the TPS26750EVM using the DUT Type C Port (J4)? If a sink only configuration was selected, this question is not selectable.

When selecting the maximum power that can be sourced, the Transmit Source Capabilities register (0x32) of the TPS26750 is configured by adding default Source PDOs (each PDO is also referred to as a USB-PD contract) as shown in Figure 3-6.

Note: All registers referenced in this section can be accessed and modified manually by entering Advanced Configuration Mode. This is detailed in Section 3.4.4.

Question 3: What is the maximum power in Watts that you want to sink to the TPS26750EVM using the DUT Type C Port (J4)? If a source only configuration was selected, then this question is not selectable.

When selecting the maximum power that can be sinked, the Transmit Sink Capabilities register (0x33) of the TPS26750 is configured by adding default Sink PDOs (each PDO is also referred to as a USB-PD contract).

Table 3-2 PDOs Associated with Selected Power in Questions 2 and 3
Power Option Selected Default SPR PDOs
15W (5V) 5V/3A
27W (9V) 5V/3A, 9V/3A
45W (15V) 5V/3A, 9V/3A, 15V/3A
60W (20V) 5V/3A, 9V/3A, 15V/3A, 20V/3A
100W (20V) 5V/3A, 9V/3A, 15V/3A, 20V/5A

The PDOs included in Registers 0x32 and 0x33 are correlated with the selected power option in Table 3-2.

If required power is greater than 100W, and an option greater than 100W is selected, then the PDOs greater than 100W are EPR PDOs, and the default generated PDOs are shown in Table 3-3. The PDOs are listed in order. A single fixed PDO is listed in the format [PDO Voltage value]V/[PDO Current value]A:

Table 3-3 EPR Power Ranges
Power Option Selected Default SPR PDOs Default EPR PDOs
140W (28V) 5V/3A, 9V/3A, 15V/3A, 20V/5A 28V/5A, AVS PDO
180W (36V) 5V/3A, 9V/3A, 15V/3A, 20V/5A 28V/5A, 36V/5A, AVS PDO
240W (48V) 5V/3A, 9V/3A, 15V/3A, 20V/5A 28V/5A, 36V/5A, 48V/5A, AVS PDO

Question 4: If a DRP configuration is selected in question 1 (Configuration Index 1 or 2), then question 4 determines which power role (source or sink) is preferred by the TPS26750EVM. If Configuration Index 3,4, or 5 was selected, then this question is not selectable. The meaning of preferred in this context is the following:

  • If the TPS26750EVM prefers to be a source, and after connection to a port partner, is acting as a sink, then the TPS26750 requests to the port partner to swap roles (power role swap) in an attempt to become a power source.
  • If the TPS26750EVM prefers to be a sink, and after connection to a port partner, is acting as a source, then the TPS26750 requests to the port partner to swap roles (power role swap) in an attempt to become a power sink.

Question 5: What is the supported USB speed of the DUT? Based on the selection, this determines what USB speed is enumerated during PD negotiation. If USB data is not required, then select No USB data is being used.

Question 6: What is the preferred data role (UFP, DFP, or Dual Role Port (different from Dual Role Power, a power role)) of the DUT? When an implicit Type-C contract (this occurs before the explicit USB-PD contract) is made the Power-role and Data-role is either Source and DFP or Sink and UFP. If this combination does not meet the USB Data Role needs for the application, then selecting the preferred data role allows the TPS26750 to request a data role swap when appropriate. If there is no preference, then select No. This information is stored in the Port Control register (0x29).

Note: For more details on the registers of the TPS26750, refer to the TPS26750 Technical Reference Manual.

Question 7: Is USB Battery Charging 1.2 (BC1.2) and legacy charging supported in the application? Based on the selection, the TPS26750 can enumerate different BC1.2 charging schemes. Refer to the TPS26750 USB Type-C® and USB PD Controller with Integrated Power Switches Optimized for Power Applications data sheet for more details on BC1.2 implementation.

Note: The TPS26750EVM does not support BC1.2 out of the box. To use the TPS26750EVM in conjunction with BC1.2, populate resistors R77 and R78 with 0Ω resistors (located on the top of the board to the right of TP3 and to the left of J4, as shown in Figure 3-3), and depopulate resistors R25 and R26 (located on the bottom of the board, beneath U13, as shown in Figure 3-4).
TPS26750EVM Resistor 77 and 78 Location Figure 3-3 Resistor 77 and 78 Location
TPS26750EVM Resistor 25 and 26 Location Figure 3-4 Resistor 25 and 26 Location

Question 8: Enables or disables Liquid Detection support. This is a new feature of the TPS26750 based on the Type-C specification for Liquid Detection and Corrosion Mitigation. For more details, refer to Section 4.1.

Note: The TPS26750 is not able to support BC1.2 and Liquid Detection simultaneously, since both features utilize the same GPIO pins (GPIO4 and GPIO5).

Question 9: Allows the ability to enter a Vendor ID. The Vendor ID is given by the USB-IF, and is a 4-digit hexadecimal value. Select Yes option to enter the desired Vendor ID, otherwise select No.

Question 10: Allows the ability to enter a Product ID, which is a 4-digit hexadecimal configuration identifier, after selecting Yes. If unused, select No.

Questions 11 through 18 corresponds to configuring the selected BQ (Battery Charger) device if applicable. These questions are only available for use if a configuration was selected in the first question that includes a BQ block. For all other configurations (TPS26750 without a BQ block), these questions are disabled. For more details on each question, refer to Section 4.2.2.

The TPS26750 supports integration with the BQ25756 IC. If using the BQ25756EVM in conjunction with the TPS26750EVM, then any configuration in Question 1 with a BQ block can be used.