SNVSAT4A September 2017 – June 2021 LP873220-Q1
When the PGOOD signal becomes inactive, the source for the fault can be read from the PG_FAULT register. If the invalid output voltage becomes valid again, then the PGOOD signal becomes active. Thus the PGOOD signal always shows if the monitored output voltages are valid. The block diagram for this operation is shown in Figure 7-9 and an example of operation is shown in Figure 7-10.
The PGOOD signal can also be configured so that it maintains an inactive state even when the monitored outputs are valid, but there are PG_FAULT_x bits in the PG_FAULT register pending clearance. This type of operation is selected by setting the PGFAULT_GATES_PGOOD bit to 1 in the PGOOD_CTRL_2 register.