My IC keeps blowing up - PAC1720 current sense IC
I think with bias they mean the combination of the 5.2 V zener diode and the 100k to 1M resistor. So the zener diode is providing a voltage to the chip making those parts work which protect the chip from the voltage across the sense pins.

So if you don't have that combination in your unit, you will fry the chip as soon as VDD is removed and nothing is left to power those parts.