SLVAF37 January   2021 ATL431LI

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 TL431 as a Type-2 Amplifier
    2. 1.2 TL431 Solution with Isolation
  3. 2Design Procedures
    1. 2.1 Design Considerations for Optocoupler
    2. 2.2 Design Considerations for Biasing Circuit
    3. 2.3 Schematic Analysis and Waveforms
  4. 3Summary
  5. 4References

3 Summary

We discussed step-by-step design procedures for shunt regulator in isolated converter system. And was able to review its basic configuration as error amplifier and how it works in actual operating schematic. System designers should understand Energy regulation requirements of where they release the system to. This application note is to help the way of biasing circuit, control scenario for Vout regulation, especially for those who are not familiar with isolated feedback control.