SLLSEB1G February   2012  – August 2024 TPD1E10B06

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 Recommended Operating Conditions
    5. 5.5 Thermal Information
    6. 5.6 Electrical Characteristics
    7. 5.7 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Receiving Notification of Documentation Updates
    2. 8.2 Support Resources
    3. 8.3 Trademarks
    4. 8.4 Electrostatic Discharge Caution
    5. 8.5 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information
    1. 10.1 Tape and Reel Information
    2. 10.2 Mechanical Data

7.2.2 Detailed Design Procedure

To begin the design process, some parameters must be decided upon; the designer should make sure:

  • Voltage range on the protected line must not exceed the reverse standoff voltage of one or more TVS diodes (VRWM)
  • Operating frequency is supported by the I/O capacitance CIO of the TVS diode
  • IEC 61000-4-2 protection requirement is covered by the IEC performance of the TVS diode

For this application, the audio signal voltage range is –3 V to 3 V. The VRWM for the TVS is –5.5 V to 5.5 V; therefore, the bidirectional TVS will not break down during normal operation, and therefore normal operation of the audio signal will not be effected due to the signal voltage range. In this application, a bidirectional TVS like TPD1E10B06 is required.

Next, consider the frequency content of this audio signal. In this application with the class AB amplifier, the frequency content is from 20 Hz to 20 kHz; ensure that the TVS I/O capacitance will not distort this signal by filtering it. With TPD1E10B06 typical capacitance of 12 pF, which leads to a typical 3-dB bandwidth of 400 MHz, this diode has sufficient bandwidth to pass the audio signal without distorting it.

Finally, the human interface in this application requires above standard Level 4 IEC 61000-4-2 system-level ESD protection (±8 kV Contact/ ±15 kV Air-Gap). A standard TVS cannot survive this level of IEC ESD stress. However, TPD1E10B06 can survive at least ±30 kV Contact/ ±30 kV Air-Gap. Therefore, the device can provide sufficient ESD protection for the interface, even though the requirements are stringent. For any TVS diode to provide the full range of ESD protection capabilities, as well as to minimize the noise and EMI disturbances the board will see during ESD events, a system designer must use proper board layout of their TVS ESD protection diodes. See Section 7.4 for instructions on properly laying out TPD1E10B06.