SLVSGO0 October   2024 TPS25763-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Recommended Components
    5. 6.5  Thermal Information
    6. 6.6  Buck-Boost Regulator
    7. 6.7  CC Cable Detection Parameters
    8. 6.8  CC VCONN Parameters
    9. 6.9  CC PHY Parameters
    10. 6.10 Thermal Shutdown Characteristics
    11. 6.11 Oscillator Characteristics
    12. 6.12 ADC Characteristics
    13. 6.13 TVSP Parameters
    14. 6.14 Input/Output (I/O) Characteristics
    15. 6.15 BC1.2 Characteristics
    16. 6.16 I2C Requirements and Characteristics
    17. 6.17 Typical Characteristics
  8. 7 Parameter Measurement Information
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Device Power Management and Supervisory Circuitry
        1. 8.3.1.1 VIN UVLO and Enable/UVLO
        2. 8.3.1.2 Internal LDO Regulators
      2. 8.3.2  TVSP Device Configuration and ESD Protection
      3. 8.3.3  External NFET and LSGD
      4. 8.3.4  Buck-Boost Regulator
        1. 8.3.4.1  Buck-Boost Regulator Operation
        2. 8.3.4.2  Switching Frequency, Frequency Dither, Phase-Shift and Synchronization
        3. 8.3.4.3  VIN Supply and VIN Over-Voltage Protection
        4. 8.3.4.4  Feedback Paths and Error Amplifiers
        5. 8.3.4.5  Transconductors and Compensation
        6. 8.3.4.6  Output Voltage DAC, Soft-Start and Cable Droop Compensation
        7. 8.3.4.7  VBUS Overvoltage Protection
        8. 8.3.4.8  VBUS Undervoltage Protection
        9. 8.3.4.9  Current Sense Resistor (RSNS) and Current Limit Operation
        10. 8.3.4.10 Buck-Boost Peak Current Limits
      5. 8.3.5  USB-PD Physical Layer
        1. 8.3.5.1 USB-PD Encoding and Signaling
        2. 8.3.5.2 USB-PD Bi-Phase Marked Coding
        3. 8.3.5.3 USB-PD Transmit (TX) and Receive (Rx) Masks
        4. 8.3.5.4 USB-PD BMC Transmitter
        5. 8.3.5.5 USB-PD BMC Receiver
        6. 8.3.5.6 Squelch Receiver
      6. 8.3.6  VCONN
      7. 8.3.7  Cable Plug and Orientation Detection
        1. 8.3.7.1 Configured as a Source
        2. 8.3.7.2 Configured as a Sink
        3. 8.3.7.3 Configured as a DRP
        4. 8.3.7.4 Overvoltage Protection (Px_CC1, Px_CC2)
      8. 8.3.8  ADC
        1. 8.3.8.1 ADC Divider Ratios
      9. 8.3.9  BC 1.2, Legacy and Fast Charging Modes (Px_DP, Px_DM)
      10. 8.3.10 DisplayPort Hot-Plug Detect (HPD)
      11. 8.3.11 USB2.0 Low-Speed Endpoint
      12. 8.3.12 Digital Interfaces
        1. 8.3.12.1 General GPIO
        2. 8.3.12.2 I2C Buffer
      13. 8.3.13 I2C Interface
        1. 8.3.13.1 I2C Interface Description
        2. 8.3.13.2 I2C Clock Stretching
        3. 8.3.13.3 I2C Address Setting
        4. 8.3.13.4 Unique Address Interface
        5. 8.3.13.5 I2C Pullup Resistor Calculation
      14. 8.3.14 Digital Core
        1. 8.3.14.1 Device Memory
        2. 8.3.14.2 Core Microprocessor
      15. 8.3.15 NTC Input
      16. 8.3.16 Thermal Sensors and Thermal Shutdown
    4. 8.4 Device Functional Modes
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Application GUI Selections
        2. 9.2.2.2 EEPROM Selection
        3. 9.2.2.3 EN/UVLO
        4. 9.2.2.4 Sense Resistor, RSNS, RCSP, RCSN and CFILT
        5. 9.2.2.5 Inductor Currents
        6. 9.2.2.6 Output Capacitor
        7. 9.2.2.7 Input Capacitor
      3. 9.2.3 Application Curves
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information
    1.     106

8.3.13 I2C Interface

The TPS25763-Q1 has two I2C ports. I2C1 is a controller interface. I2C2 is a target interface.

I2C1 is used to read from or write to external target devices. During boot I2C1 is configured to read firmware patch and application configuration data from an external EEPROM with target address 0x50.

Depending upon application configuration, the TPS25763-Q1 may expose target port, I2C2, using multi-function pins: GPIO2 (I2C_SCL2), GPIO3 (I2C_SDA2). When the TPS257xx-Q1 is used in systems with a HUB or MCU, the I2C2 port can provide connection status and telemetry information as well as transfer firmware updates from the HUB or MCU to an EEPROM connected on I2C1.

IRQ functionality depends upon firmware application configuration. IRQ is not always available on both I2C1 and I2C2 simultaneously. the IRQ is available as follows:

  • Multi-function pin GPIO9: IRQ1(i), IRQ1(o), IRQ2(o)
  • Multi-function pin GPIO1: IRQ2(o)

Where (i) = operates as an input, and (o) = operates as output.

In HUB applications where I2C control is not used, GPIO9 can be configured as a simple FAULT pin reporting port over-current conditions as required by the USB 2.0 specifications.

Table 8-8 I2C Summary
I2C BusTypeTypical UsageMax Bus Frequency
I2C1cControllerConnect to I2C EEPROM, USB Type-C mux, I2C temperature sensor, I2C GPIO expander, or other I2C target. Use LDO_5V or LDO_3V3 pin as the pull-up voltage. Multi-controller configuration is not supported.1 MHz (Fast Mode Plus)
I2C2tTargetConnect to I2C capable USB HUB, MCU or automotive processor.1 MHz (Fast Mode Plus)

When the TPS25763-Q1 is configured to support DisplayPort Alt Mode as a DP sink, control is provided from the TPS25763-Q1 to the sink-side DisplayPort Alt Mode crosspoint switch (that is DP MUX). This control can be configured using the application configuration GUI for GPIO control or I2C control. When the I2C control interface is selected, the I2C1c port from the TPS25763-Q1 is connected as shown in DP Alt Mode I2C Control. The TPS25763-Q1 is designed to interface with the TUSB1064 and TUSB564 USB TYPE-C™ DP Alt Mode sink-side linear redriver crosspoint switches. Device settings are automatically configured using the application configuration GUI when the I2C control interface is selected.

Table 8-9 DP Alt Mode I2C Control
TPS25763-Q1 Pin Assignment DP MUX Functionality
I2C_SCL1 (pin 3) SCL - I2C target clock input
I2C_SDA1 (pin 4) SDA - I2C target data input/output