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    Benefits of Tantalum Powder Stress–Strain Curve Evaluation vs Conventional Wet Test

    Electrolyte Selection and Performance in Supercapacitors

    Connector PCB Design Challenges

    Researchers Demonstrated High Energy Ceramic Capacitors Stable in Wide Temperature Range

    Stackpole Offers High Voltage Plate Resistors up to 40KV

    How to Manage Supercapacitors Leakage Current and Self Discharge 

    Qualification of Commercial Supercapacitors for Space Applications

    Experimental Evaluation of Wear Failures in SMD Inductors

    Resonant Capacitors in High-Power Resonant Circuits

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    SEPIC Converter with Coupled and Uncoupled Inductors

    Coupled Inductors in SEPIC versus Flyback Converters

    Non-Linear MLCC Class II Capacitor Measurements Challenges

    Percolation Phenomenon and Reliability of Molded Power Inductors in DC/DC converters

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Feedback Loop Compensation of Current-Mode Flyback Converter

25.8.2022
Reading Time: 1 min read
A A

This Würth Elektronik webinar discuss feedback loop compensation of current-mode flyback converter and optocoupler compensator.

The Flyback converter with current-mode control is widely used in isolated applications below 150 W, in which an optocoupler transmits the output voltage feedback signal across the isolation barrier for regulation.

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The optocoupler is therefore part of the feedback loop and its characteristics need to be considered when designing the compensator to ensure stability and good transient performance of the converter.

In this webinar you will learn:

  • How to design an optocoupler-based Type 2 compensator to stabilize a current-mode Flyback converter in CCM
  • How to estimate and assess the impact of optocoupler CTR variations and pole frequency
  • How to achieve a fast transient response despite the optocoupler pole limit

Content:

  • Plant of flyback converter with current-mode control
  • Operation in CCM and DCM
  • Requirements and selection of the compensator
  • Type 2 compensator operation and design
  • Finding the optocoupler CTR range
  • Optocoupler pole: frequency limit and selection
  • Open-loop characteristics and load transient response
  • Impact of CTR and pole frequency variations
  • Experimental results

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Source: Würth Elektronik

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