SLVSF72C December   2019  – February 2021 TPD4S311 , TPD4S311A

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings—JEDEC Specification
    3. 7.3 ESD Ratings—IEC Specification
    4. 7.4 Recommended Operating Conditions
    5. 7.5 Thermal Information
    6. 7.6 Electrical Characteristics
    7. 7.7 Timing Requirements
    8. 7.8 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 4-Channels of Short-to-VBUS Overvoltage Protection (CC1, CC2, SBU1, SBU2 Pins ): 24-VDC Tolerant
      2. 8.3.2 4-Channels of IEC 61000-4-2 ESD Protection (CC1, CC2, SBU1, SBU2 Pins)
      3. 8.3.3 CC1, CC2 Overvoltage Protection FETs 400-mA or 600-mA Capable for Passing VCONN Power
      4. 8.3.4 CC Dead Battery Resistors Integrated for Handling the Dead Battery Use Case in Mobile Devices
      5. 8.3.5 1.69-mm × 1.69-mm DSBGA Package
    4. 8.4 Device Functional Modes
  9. 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 VBIAS Capacitor Selection
        2. 9.2.2.2 Dead Battery Operation
        3. 9.2.2.3 CC Line Capacitance
        4. 9.2.2.4 Additional ESD Protection on CC and SBU Lines
        5. 9.2.2.5 FLT Pin Operation
        6. 9.2.2.6 How to Connect Unused Pins
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Receiving Notification of Documentation Updates
    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

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

8.1 Overview

The TPD4S311 is a single chip USB Type-C port protection solution that provides 20-V Short-to-VBUS overvoltage and IEC ESD protection. Due to the small pin pitch of the USB Type-C connector and non-compliant USB Type-C cables and accessories, the VBUS pins can get shorted to the CC and SBU pins inside the USB Type-C connector. Because of this short-to-VBUS event, the CC and SBU pins need to be 20-V tolerant, to support protection on the full USB PD voltage range. Even if a device does not support 20-V operation on VBUS, non complaint adaptors can start out with 20-V VBUS condition, making it necessary for any USB Type-C device to support 20 V protection. The TPD4S311 integrates four channels of 20-V Short-to-VBUS overvoltage protection for the CC1, CC2, SBU1, and SBU2 pins of the USB Type-C connector.

Additionally, IEC 61000-4-2 system level ESD protection is required in order to protect a USB Type-C port from ESD strikes generated by end product users. The TPD4S311 integrates four channels of IEC61000-4-2 ESD protection for the CC1, CC2, SBU1, and SBU2 pins of the USB Type-C connector. This means IEC ESD protection is provided for all of the low-speed pins on the USB Type-C connector in a single chip in the TPD4S311. Additionally, high-voltage IEC ESD protection that is 22-V DC tolerant is required for the CC and SBU lines in order to simultaneously support IEC ESD and Short-to-VBUS protection; there are not many discrete market solutions that can provide this kind of protection. This high-voltage IEC ESD diode is what the TPD4S311 integrates, specifically designed to guarantee it works in conjunction with the overvoltage protection FETs inside the device. This sort of solution is very hard to generate with discrete components.