Biasing the TL431 for Improved Output Impedance

by Christophe Basso, ON Semiconductor, Toulouse, France, Power Electronics Technology, Jan 01 2005

Focus:
When using the TL431 voltage reference in switched-mode power supply feedback loops, proper biasing of the voltage reference to achieve low output impedance and to maintain good output voltage regulation over load.

What you’ll learn:

• How to properly bias the TL431 voltage reference in switched-mode power supply designs
• How to bias the TL431 voltage reference to achieve low output impedance in switched-mode power supply designs

Notes:
Power Design Article

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