LT4295 SHDN Function


As I know we can use AUX>6.25V to stop HSGATE working.

How can I stop HSGATE function when DC input=24V and connect to secondary Vout directly with a schottky diode.

At least 3 ways to do this but extra cost or loss.

1. Keep the MPS current but 24V higher than PoE output (Maybe 23.5V) schottky first priority.

2. Use a LT8300 from secondary to primary to shut down the AUX.

3. Use a LTC3786 boost and follow original function AUX sense.

Does there a better way to do this?

Thank you for your help.