参数资料
型号: LTC3880EUJ#PBF
厂商: Linear Technology
文件页数: 99/112页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM CM 40-QFN
软件下载: LTpowerPlay™
标准包装: 61
系列: PolyPhase®
PWM 型: 电流模式
输出数: 2
频率 - 最大: 1MHz
电源电压: 4.5 V ~ 24 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 105°C
封装/外壳: 40-WFQFN 裸露焊盘
包装: 管件
LTC3880/LTC3880-1
PMBus COMMAND DETAILS
Fault Logging
COMMAND NAME
CMD CODE DESCRIPTION
TYPE
DATA
PAGED FORMAT UNITS
NVM
DEFAULT
VALUE
MFR_FAULT_LOG
0xEE
Fault log data bytes. This sequentially retrieved
data is used to assemble a complete fault log.
R Block
N
CF
Y
NA
MFR_FAULT_LOG_ STORE
0xEA
Command a transfer of the fault log from RAM to Send Byte
EEPROM. This causes the part to behave as if a
channel has faulted off.
N
NA
MFR_FAULT_LOG_CLEAR
0xEC
Initialize the EEPROM block reserved for fault
logging and clear any previous fault logging
locks.
Send Byte
N
NA
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 125°C.
Up-Time Counter is in the Fault Log header. The counter is the time since the last reset in 200μs increments. This is
a 48-bit binary counter.
This write-only command has no data bytes.
3880fb
For more information www.linear.com/LTC3880
99
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