
STATUS_VOUT (7Ah)
The STATUS_VOUT command is a standard PMBus com-
mand that returns the value of the VOUT UV Warning flag.
Accesses to this command should use the PMBus read
byte protocol. To clear bits in this register, the underlying fault
should be removed and a CLEAR_FAULTS command is-
sued.
TABLE 11. STATUS_VOUT Definitions
Bit
NAME
Meaning
Default
7
VOUT OV Fault
Not Supported, always 0
0
6
VOUT OV Warn
Not Supported, always 0
0
5
VOUT UV Warn
A VOUT Under-voltage Warning has occurred
0
4
VOUT UV Fault
Not Supported, always 0
0
3
VOUT Max
Not Supported, always 0
0
2
TON Max Fault
Not Supported, always 0
0
1
TOFF Max Fault
Not Supported, always 0
0
VOUT Tracking Error
Not Supported, always 0
0
STATUS_INPUT (7Ch)
The STATUS_INPUT command is a standard PMBus com-
mand that returns the value of a number of flags related to
input voltage, current, and power. Accesses to this command
should use the PMBus read byte protocol. To clear bits in
this register, the underlying fault should be removed and a
CLEAR_FAULTS command issued. The VIN UV Warn flag
will default to 1 on startup. However, it will be cleared to 0 after
the first time the input voltage exceeds the resistor pro-
grammed UVLO threshold.
TABLE 12. STATUS_INPUT Definitions
Bit
NAME
Meaning
Default
7
VIN OV Fault
A VIN Over-voltage Fault has occurred
0
6
VIN OV Warn
A VIN Over-voltage Warning has occurred
0
5
VIN UV Warn
A VIN Under-voltage Warning has occurred
1
4
VIN UV Fault
A VIN Under-voltage Fault has occurred
0
3
Insufficient Voltage
Not Supported, always 0
0
2
IIN OC Fault
An IIN Over-current Fault has occurred
0
1
IIN OC Warn
An IIN Over-current Warning has occurred
0
PIN OP Warn
A PIN Over-power Warning has occurred
0
STATUS_TEMPERATURE (7Dh)
The STATUS_TEMPERATURE is a standard PMBus com-
mand that returns the value of the of a number of flags related
to the temperature telemetry value. Accesses to this com-
mand should use the PMBus read byte protocol. To clear
bits in this register, the underlying fault should be removed
and a CLEAR_FAULTS command issued.
TABLE 13. STATUS_TEMPERATURE Definitions
Bit
NAME
Meaning
Default
7
Overtemp Fault
An Overtemperature Fault has occurred
0
6
Overtemp Warn
An Overtemperature Warning has occurred
0
5
Undertemp Warn
Not Supported, always 0
0
4
Undertemp Fault
Not Supported, always 0
0
3
reserved
Not Supported, always 0
0
2
reserved
Not Supported, always 0
0
1
reserved
Not Supported, always 0
0
reserved
Not Supported, always 0
0
31
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