Did eDesignSuite propose overvoltage on the TL431?

[douglaseds9]

Hi, I used eDesignSuite to base my Flyback Converter design with wide range input power supply and 60V-2A output. All the components look perfect to me, but the loop control with the proposed TL431 appears to be operating at about 60V. Looking in the datasheet the maximum voltage Vka is 37V. Can I trust this schematic regarding the control loop? Or is it in fact wrong and would burn the TL431?

The schematic generated by eDesignSuite is this:

[Patrizia BELLITTO]

Hi @douglaseds9 ,

sorry for the delay in my answer. We are analyzing again the voltage ref selection inside this QR flyback design, asking to the application engineers who supported us during the development. I'll come back to you as soon we have answers from them.

Best regard,

Patrizia