max5961 Maxim Integrated Products, Inc., max5961 Datasheet - Page 29

• Manufacturer Part Number: max5961
• Description: 0 To 16v, Quad, Hot-swap Controller With 10-bit Current And Voltage Monitor
• Manufacturer: Maxim Integrated Products, Inc.

If PG_ is asserted and the voltage is outside the warn-
ing limits, the ALERT output is asserted low. Depending
on the status of the prot[] bits in register status1[7:6],
the MAX5961 can also deassert the PG_ output or turn
off the external MOSFET when the voltage is outside the
critical limits (see Figure 4). Table 29 shows the behav-
ior for the three possible states of the PROT input. Note
that the PROT input does not affect the MAX5961
response to the UV or OV warning digital comparators;
Figure 4. Graphical Representation of Typical UV and OV Thresholds Configuration
Table 29. PROT Input and prot[] Bits
PROT INPUT
Unconnected
STATE
High
Low
prot[1]
______________________________________________________________________________________
with 10-Bit Current and Voltage Monitor
0
0
1
prot[0]
0 to 16V, Quad, Hot-Swap Controller
0
1
0
UV/OV WARNING
Assert ALERT
Assert ALERT
Assert ALERT
ACTION
Assert ALERT
Assert ALERT, clear PG_
Assert ALERT, clear PG_, and shutdown channel(s)
it only determines the system response to the critical
digital comparators (see Tables 4a, 4b, and 29).
In a typical application, the UV1 and OV1 thresholds
would be set closer to the nominal output voltage, and
the UV2 and OV2 thresholds would be set further from
nominal (see Figure 4). This provides a “progressive”
response to a voltage excursion. However, the thresh-
olds can be configured in any arrangement or combi-
nation as desired to suit a given application.
OV1 "WARNING" THRESHOLD
UV2 "CRITICAL" THRESHOLD
OV2 "CRITICAL" THRESHOLD
UV1 "WARNING" THRESHOLD
UV/OV CRITICAL ACTION
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