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LTC4266 schematic check

Hi ADI expert

I use LTC4266 to design a 4 port POE IPC

May I have your help to check my schematic as attachment

I didn't generate -54V from a isolated power supply but simply generated it from my 12V power source with LTC's boost LTC3769

so I connect AGND to 54V , VEE to the GND...


thank you