SLVSHS7A October   2024  – June 2025 TPSI31P1-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
    3. 5.3  Recommended Operating Conditions
    4. 5.4  Thermal Information
    5. 5.5  Power Ratings
    6. 5.6  Insulation Specifications
    7. 5.7  Safety-Related Certifications
    8. 5.8  Safety Limiting Values
    9. 5.9  Electrical Characteristics
    10. 5.10 Switching Characteristics
    11. 5.11 Insulation Characteristic Curves
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Transmission of the Enable State
      2. 6.3.2 Power Transmission
      3. 6.3.3 Gate Driver
      4. 6.3.4 Chip Enable (CE)
      5. 6.3.5 Comparators
      6. 6.3.6 VDDP, VDDH, and VDDM Under-voltage Lockout (UVLO)
      7. 6.3.7 Keep-off Circuitry
      8. 6.3.8 Thermal Shutdown
    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
        1. 7.2.2.1 CDIV1, CDIV2 Capacitance
      3. 7.2.3 Application Curves
      4. 7.2.4 Insulation Lifetime
    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 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

6.3.1 Transmission of the Enable State

The TPSI31P1-Q1 uses a modulation scheme to transmit the pre-charge enable (EN) state information across the isolation barrier. The transmitter modulates the EN signal with an internally generated, high frequency carrier, and differentially drives the primary winding of the isolation transformer. The receiver on the secondary side demodulates the received signal high or low, enabling or disabling the pre-charge function, respectively.