參數資料
型號： LTC3880IUJ#PBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： 0.1 A DUAL SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PQCC40
封裝： 6 X 6 MM, LEAD FREE, PLASTIC, WJJD-2, QFN-40
文件頁數： 3/112頁
文件大小： 2182K
代理商： LTC3880IUJ#PBF
LTC3880/LTC3880-1
100
3880fa
MFR_FAULT_LOG
The MFR_FAULT_LOG command allows the user to read the contents of the FAULT_LOG after the first fault occur-
rence since the last MFR_FAULT_LOG_CLEAR command was last written. The contents of this command are stored
in non-volatile memory, and are cleared by the MFR_FAULT_LOG_CLEAR command. The length and content of this
command are listed in Table 11. If the user accesses the MFR_FAULT_LOG command and no fault log is present, the
command will return a data length of 0. If a fault log is present, the MFR_FAUTL_LOG will always return a block of
data 147 bytes long. If a fault occurs within the first second of applying power, some of the earlier pages in the fault
log may not contain valid data.
NOTE: The approximate transfer time for this command is 3.4ms using a 400kHz clock.
This read-only command is in block format.
MFR_FAULT_LOG_STORE
The MFR_FAULT_LOG_STORE command forces the fault log operation to be written to NVM just as if a fault event
occurred. This command will generate a MFR_SPECIFIC fault if the “Enable Fault Logging” bit is set in the MFR_
CONFIG_ALL_LTC3880 command.
If the die temperature exceeds 130°C, the MFR_FAULT_LOG_STORE command is disabled until the IC temperature
drops below 120°C.
Up-Time Counter is in the Fault Log header. The counter is the time since the last reset in 200s increments. This is
a 48-bit binary counter.
This write-only command has no data bytes.
Table 11. Fault Logging
This table outlines the format of the block data from a read block data of the MFR_FAULT_LOG command.
Data Format Definitions
LIN 11 = PMBus = Rev 1.1, Part 2, section 7.1
LIN 16 = PMBus Rev 1.1, Part 2, section 8. Mantissa portion only
BYTE = 8 bits interpreted per definition of this command
DATA
BITS
DATA
FORMAT BYTE NUM BLOCK READ COMMAND
Block Length
BYTE
147
The MFR_FAULT_LOG command is a fixed length of 147 bytes
The block length will be zero if a data log event has not been captured
HEADER INFORMATION
Position_Fault
BYTE
0
Position of data log pointer when fault occurred. This is the position of
the MUX ADC reading at the time of the fault. See Table 11a for meaning.
MFR_VOUT_PEAK (PAGE 0)
[15:8]
LIN 16
7
Peak READ_VOUT page 0 since last MFR_CLEAR_PEAKS.
[7:0]
LIN 16
8
MFR_VOUT_PEAK (PAGE 1)
[15:8]
LIN 16
9
Peak READ_VOUT page 1 since last MFR_CLEAR_PEAKS.
[7:0]
LIN 16
10
MFR_IOUT_PEAK (PAGE 0)
[15:8]
LIN 11
11
Peak READ_IOUT page 0 since last MFR_CLEAR_PEAKS.
[7:0]
LIN 11
12
MFR_IOUT_PEAK (PAGE 1)
[15:8]
LIN 11
13
Peak READ_IOUT page 1 since last MFR_CLEAR_PEAKS.
[7:0]
LIN 11
14
MFR_VIN_PEAK
[15:8]
LIN 11
15
Peak READ_VIN since last MFR_CLEAR_PEAKS.
[7:0]
LIN 11
16
PMBus COMMAND DETAILS
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LTC3880EUJ-1#TRPBF 0.1 A DUAL SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PQCC40
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相關代理商/技術參數
參數描述
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