PW-OK is a power good signal and should be asserted high by the power supply to indicate that the +5 VDC and
+3.3 VDC outputs are above the undervoltage thresholds of the power supply. When this signal is asserted high,
there should be sufficient mains energy stored by the converter to guarantee continuous power operation within
specification. Conversely, when either the +5VDC or the +3.3VDC output voltages falls below the undervoltage
threshold, or when mains power has been removed for a time sufficiently long so that power supply operation is no
longer guaranteed, PW-OK should be deasserted to a low state. Figure 12 represents the timing characteristics of the
PW-OK, PS On, and germane power rail signals.