LTC3882_15 Datasheet, PDF (84/104 Pages) Linear Technology – Dual Output PolyPhase Step-Down DC/DC Voltage Mode Controller with Digital Power System Management

LTC3882
PMBus COMMAND DETAILS (Status Reporting)
STATUS_WORD
The STATUS_WORD command returns a two-byte summary of the channel's fault condition. The low byte of the STA-
TUS_WORD is the same as the STATUS_BYTE command.
STATUS_WORD High Byte Message Contents:
BIT
STATUS BIT NAME MEANING
15
VOUT
An output voltage fault or warning has occurred.
14
IOUT
An output current fault or warning has occurred.
13
INPUT
An input voltage fault or warning has occurred.
12
MFR_SPECIFIC A fault or warning specific to the LTC3882 has occurred.
11
POWER_GOOD# The POWER_GOOD state is false if this bit is set.
10
FANS
Not supported (LTC3882 returns 0).
9
OTHER
Not supported (LTC3882 returns 0).
8
UNKNOWN
Not supported (LTC3882 returns 0).
This command has two data bytes.
STATUS_VOUT
The STATUS_VOUT command returns one byte of V_OUT status information.
STATUS_VOUT Message Contents:
BIT MEANING
7
V_OUT overvoltage fault.
6
V_OUT overvoltage warning.
5
V_OUT undervoltage warning.
4
V_OUT undervoltage fault.
3
VOUT_MAX warning.
2
TON_MAX fault.
1
TOFF_MAX warning.
0
Not supported by the LTC3882 (returns 0).
ALERT can be asserted if any of bits[7:1] are set. These may be cleared by writing a 1 to their bit position in STATUS_VOUT, in lieu of a CLEAR_FAULTS
command.
This command has one data byte.
3882f
84
For more information www.linear.com/LTC3882