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PMP9531: Question for Soft start part Mosfet Collector's connection

Part Number: PMP9531

Hi Team,

 I have a questions for Mosfet in following circuit. During power supply start urn on, the Mosfet Gate and source voltage is limited, the Mosfet is turn off and inrush current go through two branch and back to negative input rectifier diode, which is parasitic diode of MOSFET and RT1. Also a concern are parsitic diode of Mosfet (Q2) bypass RT1.

 Can you help to understand concern?

 Whether Q2 should be pleaced reversed---- let Collector terminal connect to Bulk capacitor's negative terminal? Tks. 


Xiaobing (Eric)