SLVSFN9A September   2020  – August 2021 TPS65988DK

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Power Supply Requirements and Characteristics
    6. 6.6  Power Consumption Characteristics
    7. 6.7  Power Switch Characteristics
    8. 6.8  Cable Detection Characteristics
    9. 6.9  USB-PD Baseband Signal Requirements and Characteristics
    10. 6.10 Thermal Shutdown Characteristics
    11. 6.11 Oscillator Characteristics
    12. 6.12 I/O Characteristics
    13. 6.13 I2C Requirements and Characteristics
    14. 6.14 SPI Controller Timing Requirements
    15. 6.15 HPD Timing Requirements
    16. 6.16 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  USB-PD Physical Layer
        1. 8.3.1.1 USB-PD Encoding and Signaling
        2. 8.3.1.2 USB-PD Bi-Phase Marked Coding
        3. 8.3.1.3 USB-PD Transmit (TX) and Receive (Rx) Masks
        4. 8.3.1.4 USB-PD BMC Transmitter
        5. 8.3.1.5 USB-PD BMC Receiver
      2. 8.3.2  Power Management
        1. 8.3.2.1 Power-On and Supervisory Functions
        2. 8.3.2.2 VBUS LDO
        3. 8.3.2.3 Supply Switch Over
      3. 8.3.3  Port Power Switches
        1. 8.3.3.1 PP_HV Power Switch
          1. 8.3.3.1.1 PP_HV Overcurrent Clamp
          2. 8.3.3.1.2 PP_HV Overcurrent Protection
          3. 8.3.3.1.3 PP_HV OVP and UVP
          4. 8.3.3.1.4 PP_HV Reverse Current Protection
        2. 8.3.3.2 Schottky for Current Surge Protection
        3. 8.3.3.3 PP_EXT Power Path Control
        4. 8.3.3.4 PP_CABLE Power Switch
          1. 8.3.3.4.1 PP_CABLE Overcurrent Protection
          2. 8.3.3.4.2 PP_CABLE Input Good Monitor
        5. 8.3.3.5 VBUS Transition to VSAFE5V
        6. 8.3.3.6 VBUS Transition to VSAFE0V
      4. 8.3.4  Cable Plug and Orientation Detection
        1. 8.3.4.1 Configured as a DFP
        2. 8.3.4.2 Configured as a UFP
        3. 8.3.4.3 Configured as a DRP
        4. 8.3.4.4 Fast Role Swap Signaling
      5. 8.3.5  Dead Battery Operation
        1. 8.3.5.1 Dead Battery Advertisement
        2. 8.3.5.2 BUSPOWER (ADCIN1)
      6. 8.3.6  ADC
      7. 8.3.7  DisplayPort HPD
      8. 8.3.8  Digital Interfaces
        1. 8.3.8.1 General GPIO
        2. 8.3.8.2 I2C
        3. 8.3.8.3 SPI
      9. 8.3.9  Digital Core
      10. 8.3.10 I2C Interfaces
        1. 8.3.10.1 I2C Interface Description
        2. 8.3.10.2 I2C Clock Stretching
        3. 8.3.10.3 I2C Address Setting
        4. 8.3.10.4 Unique Address Interface
        5. 8.3.10.5 I2C Pin Address Setting (ADCIN2)
      11. 8.3.11 SPI Controller Interface
      12. 8.3.12 Thermal Shutdown
      13. 8.3.13 Oscillators
    4. 8.4 Device Functional Modes
      1. 8.4.1 Boot
      2. 8.4.2 Power States
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 USB4 Device Application with Host Charging
        1. 9.2.1.1 Design Requirements
          1. 9.2.1.1.1 Power Supply Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 USB Power Delivery Source Capabilities
          2. 9.2.1.2.2 USB Power Delivery Sink Capabilities
          3. 9.2.1.2.3 Supported Data Modes
          4. 9.2.1.2.4 USB4 Hub Controller & PD Controller I2C Communication
          5. 9.2.1.2.5 Dock Management Controller & PD Controller I2C Communication
          6. 9.2.1.2.6 SPI Flash Options
  10. 10Power Supply Recommendations
    1. 10.1 3.3-V Power
      1. 10.1.1 VIN_3V3 Input Switch
      2. 10.1.2 VBUS 3.3-V LDO
    2. 10.2 1.8-V Power
    3. 10.3 Recommended Supply Load Capacitance
  11. 11Layout
    1. 11.1  Layout Guidelines
    2. 11.2  Layout Example
    3. 11.3  Stack-up and Design Rules
    4. 11.4  Main Component Placement
    5. 11.5  Super Speed Type-C Connectors
    6. 11.6  Capacitor Placement
    7. 11.7  CC1/2 Capacitors & ADCIN1/2 Resistors
    8. 11.8  CC and SBU Protection Placement
    9. 11.9  CC Routing
    10. 11.10 DRAIN1 and DRAIN2 Pad Pours
    11. 11.11 VBUS Routing
    12. 11.12 Completed Layout
    13. 11.13 Power Dissipation
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Firmware Warranty Disclaimer
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Support Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

8.3.2 Power Management

The TPS65988DK power management block receives power and generates voltages to provide power to the TPS65988DK internal circuitry. These generated power rails are LDO_3V3 and LDO_1V8. LDO_3V3 may also be used as a low power output for external flash memory. The power supply path is shown in Figure 8-9.

GUID-FA67091D-D8C2-4F90-801F-77D545AF8ACC-low.gifFigure 8-9 Power Supplies

The TPS65988DK is powered from either VIN_3V3, VBUS1, or VBUS2. The normal power supply input is VIN3V3. In this mode, current flows from VIN_3V3 to LDO3V3 to power the core 3.3-V circuitry and I/Os. A second LDO steps the voltage down from LDO_3V3 to LDO_1V8 to power the 1.8-V core digital circuitry. When VIn_3V3 power is unavailable and power is available on VBUS1 or VBUS2 , the TPS65988DK is powered from VBUS. In this mode, the voltage on VBUS1 or VBUS 2 is stepped down through an LDO to LDO_3V3.