Analog Devices LTM4683 Manual page 51

PMBus COMMAND SUMMARY
Table 7. PMBus Commands Summary (NOTE: The Data Format Abbreviations are Detailed in Table 8)
CMD
COMMAND NAME CODE DESCRIPTION
VIN_UV_WARN_LIMIT 0x58
IIN_OC_WARN_LIMIT 0x5D Input supply overcurrent warning limit.
TON_DELAY 0x60
TON_RISE 0x61
TON_MAX_FAULT_LIMIT 0x62
TON_MAX_FAULT_ 0x63
RESPONSE
TOFF_DELAY 0x64
TOFF_FALL 0x65
TOFF_MAX_WARN_LIMIT 0x66
STATUS_BYTE 0x78
STATUS_WORD 0x79
STATUS_VOUT 0x7A Output voltage fault and warning status.
STATUS_IOUT 0x7B Output current fault and warning status.
STATUS_INPUT 0x7C Input supply fault and warning status.
STATUS_TEMPERATURE 0x7D External temperature fault and warning
STATUS_CML 0x7E
STATUS_MFR_SPECIFIC 0x80
READ_VIN 0x88
READ_IIN 0x89
READ_VOUT 0x8B Measured output voltage.
READ_IOUT 0x8C Measured output current.
READ_TEMPERATURE_1 0x8D External temperature sensor temperature.
READ_TEMPERATURE_2 0x8E
Input supply undervoltage warning limit.
Time from RUN and/or operation on to
output rail turn-on.
Time from when the output starts to rise
until the output voltage reaches the V
commanded value.
Maximum time from the start of
TON_RISE for V to cross the
OUT
VOUT_UV_FAULT_LIMIT.
Action to be taken by the device when a
TON_MAX_FAULT event is detected.
Time from RUN and/or operation off to the
start of TOFF_FALL ramp.
Time from when the output starts to fall
until the output reaches zero volts.
Maximum allowed time, after TOFF_FALL
is completed, for the unit to decay below
12.5%.
One-byte summary of the unit's fault
condition.
Two-byte summary of the unit's fault
condition.
status for READ_TEMERATURE_1.
Communication and memory fault and
warning status.
Manufacturer-specific fault and state
information.
Measured input supply voltage.
Measured input supply current.
This is the value used for all temperature-
related processing, including
IOUT_CAL_GAIN.
Internal die junction temperature. Does not
affect any other commands.
For more information
TYPE PAGED FORMAT UNITS NVM
R/W Word N
R/W Word N
R/W Word Y
R/W Word Y
OUT
R/W Word Y
R/W Byte Y
R/W Word Y
R/W Word Y
R/W Word Y
R/W Byte Y
R/W Word Y
R/W Byte Y
R/W Byte Y
R/W Byte N
R/W Byte Y
R/W Byte N
R/W Byte Y
R Word N
R Word N
R Word Y
R Word Y
R Word Y
R Word N
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LTM4683
DATA DEFAULT
VALUE
L11 V Y 4.65
0xCA54
L11 A Y 10.0
0xD280
L11 ms Y 0.0
0x8000
L11 ms Y 3.0
0xC300
L11 ms Y 5.0
0xCA80
Reg Y 0xB8
L11 ms Y 0.0
0x8000
L11 ms Y 3.0
0xC300
L11 ms Y 0
0x8000
Reg NA
Reg NA
Reg NA
Reg NA
Reg NA
Reg NA
Reg NA
Reg NA
L11 V NA
L11 A NA
L16 V NA
L11 A NA
L11 C NA
L11 C NA
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