ADUM 6421A DC - DC Converter power-up issues, Does not output power on the isolated side.

Hello Everyone,

I am trying to get into running the AD 6421A DC  to DC converter to do some simple measurements.Since I do not have a ready evaluation module i have made one.
As advised on the datasheet below.


The P_DIS mode pin is connected to the GND1 rail, to turn on the isolated output on Vcc2 side.
It seems that the converter does not output anything on isolated side. No matter what settings I choose the chip does not output any power on the isolated side.

I have checked the power supply to the IC chips power legs, and there is stable 5 Volt supply on the Vddp and GND1 but on the opposite side nothing output of voltage.

Thanks in advance