SLVSIM2A June   2025  – August 2025 TPD4S480-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings—JEDEC Specification
    3. 5.3 ESD Ratings—IEC Specification
    4. 5.4 ESD Ratings—ISO Specification
    5. 5.5 Recommended Operating Conditions
    6. 5.6 Thermal Information
    7. 5.7 Electrical Characteristics
    8. 5.8 Timing Requirements
    9. 5.9 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 4-Channels of Short-to-VBUS Overvoltage Protection (CC1, CC2, SBU1, SBU2 Pins or CC1, CC2, DP, DM Pins): 63VDC Tolerant
      2. 6.3.2 4-Channels of IEC 61000-4-2 ESD Protection (CC1, CC2, SBU1, SBU2 Pins)
      3. 6.3.3 CC1, CC2 Overvoltage Protection FETs 600-mA Capable for Passing VCONN Power
      4. 6.3.4 CC Dead Battery Resistors Integrated for Handling the Dead Battery Use Case in Mobile Devices
      5. 6.3.5 EPR Adapter
        1. 6.3.5.1 VBUS Divider
        2. 6.3.5.2 EPR Blocking FET Gate Driver
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
    3. 7.3 Design Requirements
      1. 7.3.1 EPR Design Requirements
    4. 7.4 Detailed Design Procedure
      1. 7.4.1 VBIAS Capacitor Selection
      2. 7.4.2 CC Line Capacitance
      3. 7.4.3 FLT Pin Operation
      4. 7.4.4 Dead Battery Operation
    5. 7.5 Application Curves
    6. 7.6 Power Supply Recommendations
    7. 7.7 Layout
      1. 7.7.1 Layout Guidelines
      2. 7.7.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support
      1. 8.1.1 Related Documentation
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

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

3 Description

The TPD4S480-Q1 is a single-chip USB Type-C port protection device that provides 48V short-to-VBUS overvoltage and IEC ESD protection.

Since the release of the USB Type-C connector, many products and accessories for USB Type-C have been released that do not meet the USB Type-C specification. One example of this is USB Type-C Power Delivery adapters that only place high voltage on the VBUS line. Another concern for USB Type-C is that mechanical twisting and sliding of the connector shorting pins due to the the pins close proximity in the small connector. This mechanical twisting and sliding can cause 48V VBUS to be shorted to the CC and SBU pins. Also due to the proximity of the pins in the Type-C connector, there is a heightened concern that debris and moisture will cause the 48V VBUS pin to be shorted to the CC, SBU, or USB2 pins.

These mehcanical events and non-ideal equipment make it necessary for the CC and other pins to be 48V tolerant, even though the pins only operate at 5V or lower. The TPD4S480-Q1 enables the CC and SBU or USB2 pins to be 48V tolerant without interfering with normal operation by providing over-voltage protection on the CC and SBU pins. The device places high voltage FETs in series on the SBU and CC lines. For systems not utilizing alternate modes with SBU communication, use the SBU pins of the TPD4S480-Q1 to protect the USB2 data lines instead. When a voltage above the OVP threshold is detected on these lines, the high voltage switches are opened up, isolating the rest of the system from the high voltage condition present on the connector.

The integrated VBUS divider circuit and FET driver, allow PD controllers not rated for EPR operation to safely operate in EPR voltage ranges. When enabled by GPIO or automatically when VBUS exceeds 24V, the TPD4S480-Q1 disables the optional external blocking FET and enables the voltage divider. This action protects 20V rated PD controllers and allows the use of existing VBUS sense circuits.

Finally, most systems require IEC 61000-4-2 system level ESD protection for external pins. The TPD4S480-Q1 integrates IEC 61000-4-2 ESD protection for the CC1, CC2, SBU1, and SBU2 pins, eliminating the need to place high voltage TVS diodes externally on the connector.

Package Information
PART NUMBER PACKAGE(1) BODY SIZE (NOM)
TPD4S480-Q1 RGR (VQFN, 20) 3.5mm x 3.5mm
(1) For all available packages, see the orderable addendum at the end of the data sheet.
TPD4S480-Q1 CC and SBU Overvoltage Protection CC and SBU Overvoltage Protection