I am using BSO150N03MDG Mosfet instead of IRF7821.
When we will on the supply due to mosfet power supply is sorted, after off the supply and remove the mosfet from pcb, power supply is not longer shorted.
Also the resistor at the gate mosfet also got damaged.
After removing mosfet at pgood we got 5 and 3.3 volt respectively too.