SLLSFP4A July   2022  – August 2026 ISOW7721

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 - Power Converter
    10. 5.10 Supply Current Characteristics - Power Converter
    11. 5.11 Electrical Characteristics Channel Isolator - VIO, VISOIN = 5-V
    12. 5.12 Supply Current Characteristics Channel Isolator - VIO, VISOIN = 5-V
    13. 5.13 Electrical Characteristics Channel Isolator - VIO, VISOIN = 3.3-V
    14. 5.14 Supply Current Characteristics Channel Isolator - VIO, VISOIN = 3.3-V
    15. 5.15 Electrical Characteristics Channel Isolator - VIO, VISOIN = 2.5-V
    16. 5.16 Supply Current Characteristics Channel Isolator - VIO, VISOIN = 2.5-V
    17. 5.17 Electrical Characteristics Channel Isolator - VIO, VISOIN = 1.8-V
    18. 5.18 Supply Current Characteristics Channel Isolator - VIO, VISOIN = 1.8-V
    19. 5.19 Switching Characteristics - 5-V Supply
    20. 5.20 Switching Characteristics - 3.3-V Supply
    21. 5.21 Switching Characteristics - 2.5-V Supply
    22. 5.22 Switching Characteristics - 1.8-V Supply
    23. 5.23 Insulation Characteristics Curves
    24. 5.24 Typical Characteristics
  7. 6 Parameter Measurement Information
  8. 7 Detailed Description
    1. 7.1 Overview
      1. 7.1.1 Power Isolation
      2. 7.1.2 Signal Isolation
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Electromagnetic Compatibility (EMC) Considerations
      2. 7.3.2 Power-Up and Power-Down Behavior
      3. 7.3.3 Protection Features
      4. 7.3.4 Multi-Device Chaining for Increased Power Output
    4. 7.4 Device Functional Modes
      1. 7.4.1 Device I/O Schematics
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curve
        1. 8.2.3.1 Insulation Lifetime
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
        1. 8.4.1.1 PCB Material
      2. 8.4.2 Layout Example
  10. 9 Revision History
  11. 10Device and Documentation Support
    1. 10.1 Device Support
      1. 10.1.1 Development Support
    2. 10.2 Documentation Support
      1. 10.2.1 Related Documentation
    3. 10.3 Receiving Notification of Documentation Updates
    4. 10.4 Support Resources
    5. 10.5 Trademarks
    6. 10.6 Electrostatic Discharge Caution
    7. 10.7 Glossary
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

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

8.2.3.1 Insulation Lifetime

Insulation lifetime projection data is collected by using industry-standard Time Dependent Dielectric Breakdown (TDDB) test method. In this test, all pins on each side of the barrier are tied together creating a two-terminal device and high voltage applied between the two sides; See Figure 8-4 for TDDB test setup. The insulation breakdown data is collected at various high voltages switching at 60Hz over temperature. For reinforced insulation, VDE standard requires the use of TDDB projection line with failure rate of less than 1 part per million (ppm). Even though the expected minimum insulation lifetime is 20 years at the specified working isolation voltage, VDE reinforced certification requires additional safety margin of 20% for working voltage and 50% for lifetime which translates into minimum required insulation lifetime of 30 years at a working voltage that is 20% higher than the specified value.  

Figure 8-5 shows the intrinsic capability of the isolation barrier to withstand high voltage stress over the lifetime of the barrier. Based on the TDDB data, the intrinsic capability of the insulation is 1000VRMS with a lifetime of >100 years.

ISOW7721 Test Setup for Insulation Lifetime MeasurementFigure 8-4 Test Setup for Insulation Lifetime Measurement
ISOW7721 Insulation Lifetime Projection DataFigure 8-5 Insulation Lifetime Projection Data