Data Sheet
GE
EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules
36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output
Measuring the Temperature using the PMBus
STATUS_IOUT : Returns one byte of information relating to
The module can provide temperature information using the
the status of the module’s output current related faults.
READ_TEMPERATURE_1 command. The command returns
Bit Position
Flag
Default Value
two bytes of data in the linear format. The upper five bits
[7:3] of the high data byte form the two’s complement
representation of the exponent, which is fixed at –2 (decimal).
The remaining 11 bits are used for two’s complement
representation of the mantissa.
7
6
5
4
3
2
1
0
IOUT OC Fault
0
0
0
0
0
0
0
0
X
IOUT OC Warning
X
X
X
X
X
Note that the module’s temperature sensor is located close
to the module hot spot TH1 (see Thermal Considerations).and
is subjected to temperatures higher than the ambient air
temperature near the module. The temperature reading will
be highly influenced by module load and airflow conditions.
STATUS_INPUT : Returns one byte of information relating to
the status of the module’s input voltage related faults.
Reading the Status of the Module using the PMBus
Bit Position
Flag
Default Value
The module supports a number of status information
commands implemented in PMBus. However, not all features
are supported in these commands. A X in the FLAG cell
indicates the bit is not supported.
7
6
5
4
3
2
1
0
VIN OV Fault
0
0
0
0
0
0
0
0
X
X
VIN UV Fault
Module Off (Low VIN)
STATUS_WORD : Returns two bytes of information with a
summary of the module’s fault/warning conditions.
High Byte
X
X
X
Bit Position
Flag
Default Value
15
14
13
12
11
10
9
VOUT fault
IOUT fault or warning
Input Voltage fault
0
0
0
0
0
0
0
0
STATUS_TEMPERATURE : Returns one byte of information
relating to the status of the module’s temperature related
faults.
X
Bit Position
Flag
Default Value
POWER_GOOD# (is negated)
7
6
5
4
3
2
1
0
OT Fault
OT Warning
0
0
0
0
0
0
0
0
X
X
X
X
X
X
X
X
X
8
Low Byte
Flag
X
OFF
Bit Position
Default Value
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
VOUT Overvoltage
IOUT Overcurrent
VIN Undervoltage
Temperature
CML (Comm. Memory Fault)
X
STATUS_CML : Returns one byte of information relating to the
status of the module’s communication related faults.
Bit Position
Flag
Default Value
Invalid/Unsupported
7
0
Command
6
5
4
3
2
1
0
Invalid/Unsupported Data
Packet Error Check Failed
0
0
0
0
0
0
0
STATUS_VOUT : Returns one byte of information relating to
the status of the module’s output voltage related faults.
X
X
X
X
X
Bit Position
Flag
Default Value
7
6
5
4
3
2
1
0
VOUT OV Fault
0
0
0
0
0
0
0
0
X
X
X
X
X
X
X
April 15, 2013
©2012 General Electric Company. All rights reserved.
Page 19
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
