I'm designing a flyback converter using the TOPSwitch-JX. The output power is 50,4 W (84V * 0.6A).
The problem that I have found is that the device LM431 only can reach around 30 V and I have an output voltage of 84 V so I presume that the control loop wont work well.
Could this represent a problem to control the switching device? Can I use three LM431 devices in series to reach 84 V and control the closed loop?
Thanks and kind regards,