SLVSEQ4A September   2018  – December 2018 TVS2201

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Voltage Clamp Response to 8/20-µs Surge Event
      2.      Functional Block Diagram
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1.     Pin Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings - JEDEC
    3. 7.3 ESD Ratings - IEC
    4. 7.4 Recommended Operating Conditions
    5. 7.5 Thermal Information
    6. 7.6 Electrical Characteristics
    7. 7.7 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
    4. 8.4 Device Functional Modes
      1. 8.4.1 Protection Specifications
      2. 8.4.2 Reliability Testing
      3. 8.4.3 Zero Derating
      4. 8.4.4 Bidirectional Operation
      5. 8.4.5 Transient Performance
  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
      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 Community 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

9.2.2 Detailed Design Procedure

If the TVS2201 is in place to protect the device, the voltage will rise to the breakdown of the diode at 26.6 V, during a surge event. The TVS2201 will then turn on to shunt the surge current to ground. With the low dynamic resistance of the TVS2201, even large amounts of surge current will have minimal impact on the clamping voltage. The dynamic resistance of the TVS2201 is around 40 mΩ, which means a 25-A surge current will cause a voltage raise of 25 A × 40 mΩ = 1 V. Because the device turns on at 26.6 V, this means the input will be exposed to a maximum of 26.6 V + 1 V = 27.6 V during surge pulses, robustly protecting the USB Type-C port.

In addition, the TVS2201 provides protection against reverse voltage application that could accidentally be caused by shorts between pins. If –20 V is applied to the VBUS pin, the TPS65982 will not be harmed because the series diode will prevent the voltage from being applied to the input, and the TVS2201 will not shunt current because the reverse working voltage is –22 V. If the TVS2200 or a unidirectional device is used in this case, a –20-V short would cause the device to shunt current until it fails.

Finally, the small size of the device also improves fault protection by lowering the effect of fault current coupling onto neighboring traces. The small form factor of the TVS2201 allows the device to be placed extremely close to the input connector, which lowers the length of the path fault current going through the system compared to larger protection solutions.