SLLSG17 August   2025 ISOS510-SEP

ADVANCE INFORMATION  

  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 Insulation Specifications
    6. 5.6 Safety-Related Certifications
    7. 5.7 Safety Limiting Values
    8. 5.8 Electrical Characteristics
    9. 5.9 Switching Characteristics
  7. 6 Parameter Measurement Information
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
    4. 7.4 Device Functional Modes
      1. 7.4.1 Active Mode
      2. 7.4.2 Saturation Mode
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Typical Application
        1. 8.1.1.1 Design Requirements
        2. 8.1.1.2 Detailed Design Procedure
          1. 8.1.1.2.1 Sizing RPULLUP
          2. 8.1.1.2.2 Sizing RIN
        3. 8.1.1.3 Application Curves
    2. 8.2 Power Supply Recommendations
    3. 8.3 Layout
      1. 8.3.1 Layout Guidelines
      2. 8.3.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information
    1. 11.1 Tape and Reel Information

8.1.1.2 Detailed Design Procedure

This section presents the design procedure for using the ISOS510 device. External components must be selected to operate ISOS510 within the Recommended Operating Conditions. The following recommendations on component selection focus on the design of a typical feedback control loop for an isolated flyback converter.

When using an isolator in a feedback control loop for an isolated power supply, many variables can affect how to properly use the isolator, including the output voltage of the power supply and the type of controller the feedback signal is being sent to. For this example, assume that the output voltage of this power supply, VOUT, is 5V, and the PWM controller being used has an integrated error amplifier with a COMP pin that acts as the output of this amplifier.