TIDUF15 March   2023

 

  1.   Description
  2.   Resources
  3.   Features
  4.   Applications
  5.   5
  6. 1System Description
  7. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Highlighted Products
      1. 2.2.1 PD Controller - TPS65994BF
      2. 2.2.2 LM73100
      3. 2.2.3 Redriver TUSB1104
      4. 2.2.4 Redriver TUSB1044
      5. 2.2.5 TUSB216I
      6. 2.2.6 Buck-Boost DC/DC Converter - TPS55288
      7. 2.2.7 System Power
        1. 2.2.7.1 Reverse Polarity Protection Diode - LM74500-Q1
        2. 2.2.7.2 TPS51225
        3. 2.2.7.3 External MOSFET - CSD87330Q3D
      8. 2.2.8 Upstream and Downstream USB Type-C Ports
        1. 2.2.8.1 Downstream Ports
          1. 2.2.8.1.1 ESD Protection - TPD6S300A
          2. 2.2.8.1.2 ESD Protection - ESD122
        2. 2.2.8.2 Upstream Ports
        3. 2.2.8.3 Sideband Signal Interface
      9. 2.2.9 MCU Debug Interface
  8. 3System Design Theory
    1. 3.1 PD Controller and I2C Communication
      1. 3.1.1 I2C Interfaces of PD Controller - TPS65994
      2. 3.1.2 I2C Commands to Control the DC/DC Converter - TPS55288
      3. 3.1.3 I2C Commands to Control the Redriver - TUSB1104
      4. 3.1.4 I2C Commands to Control the Redriver - TUSB1044
      5. 3.1.5 I2C MCU Debug Interface
      6. 3.1.6 USB Type-C® VBUS Power Generation
  9. 4Hardware, Software, Testing Requirements, and Test Results
    1. 4.1 Hardware Requirements
    2. 4.2 Software Requirements
    3. 4.3 Test Setup
      1. 4.3.1 Test Procedure to Validate Power Delivery
  10. 5Design and Documentation Support
    1. 5.1 Design Files
      1. 5.1.1 Schematics
      2. 5.1.2 BOM
    2. 5.2 Documentation Support
    3. 5.3 Support Resources
    4. 5.4 Trademarks
  11. 6About the Author

1 System Description

This reference design with a USB Type-C power delivery controller, a USB 3.2 ×2 adaptive linear redriver and a multiprotocol bidirectional linear redriver provides up to 60 W of total power at a range of 5 V to 20 V with a maximum of 3 A. The redrivers support USB 3.2 (10Gbps), USB 3.2 ×2 (20Gbps) and DisplayPort 1.4 (8.1Gbps). This reference design can be used in industrial PC and HMI applications.

The redriver corrects signal integrity issues between the host and device resulting in a more robust system. The PD subsystem consists of a USB-PD controller and adjustable buck-boost DC/DC converter. The PD controller communicates with the redrivers to enable the USB or DP switching path and also controls the DC/DC converter and the redrivers via I2C protocol. The PD controller interacts with the USB Type-C devices plugged into the USB Type-C connectors over the configuration channel (CC) lines which enable the corresponding paths in the redriver and set the desired voltage and current in the DC/DC converters.

The USB Type-C PD and redriver reference design can be integrated with an Intel CPU (Elkhart Lake, Alder Lake, Tiger Lake) with TI's Sitara™ MPU, and other CPU or MPU designs that have USB 3 or DP capabilities, or both.