GE
Data Sheet
CAR2548FP series rectifier
Input: 90Vac to 264Vac; Output: 48Vdc @ 2500W; 3.3Vdc or 5 Vdc @ 1A
Features
Applications
Universal input with PFC
Constant power characteristic
3 front panel LEDs: 1-input;2-output; 3 - fault
Remote ON/OFF control of the 48Vdc output
Remote sense on the 48Vdc output
No minimum load requirements
Redundant parallel operation
Active load sharing (single wire)
Hot Plug-ability
Efficiency: typically 92% @ 50% load
Standby orderable either as 3.3Vdc or 5Vdc
48Vdc distributed power architectures
Cellular Base Stations
Auto recoverable OC & OT protection
Blade Servers
Operating temperature: -10 - 70C (de-rated above 50C)
Network/ATE Equipment
Digital status & control: I2C and PMBus serial bus
Network Attached Storage
EN/IEC/UL60950-1 2nd edition; UL, CSA and VDE
Telecom Access Nodes
EMI: class B FCC docket 20780 part 15, EN55022
Meets EN6100 immunity and transient standards
Routers/Switches
Shock & vibration: NEBS GR-63-CORE, level 3
Description
The CAR2548FP series of Front-End rectifiers provide highly efficient isolated power from worldwide input mains in a
compact 1U industry standard form factor in an unprecedented power density of 27W/in3. These rectifiers
complement the CAR2548DC converter, providing comprehensive solutions for systems connected either to
commercial ac mains, 48/60Vdc power plants or telecom central offices. This plug and play approach offers
significant advantages since systems can be reconfigured and repositioned readily by simply replacing the power
supply. The high-density, front-to-back airflow is designed for minimal space utilization and is highly expandable for
future growth. The industry standard PMBus compliant I2C communications buss offers a full range of control and
monitoring capabilities. The SMBusAlert signal pin alerts customers automatically of any state change within the
power supply.
*
†
‡
§
**
+
UL is a registered trademark of Underwriters Laboratories, Inc.
CSA is a registered trademark of Canadian Standards Association.
VDE is a trademark of Verband Deutscher Elektrotechniker e.V.
Intended for integration into end-user equipment. All the required procedures for CE marking of end-user equipment should be followed. (The CE mark is placed on selected products.)
ISO is a registered trademark of the International Organization of Standards.
PMBus name and logo are registered trademarks of the System Management Interface Forum (SMIF)
September 8, 2015
©2013 General Electric Company. All rights reserved.
GE
Data Sheet
CAR2548FP series rectifier
Input: 90Vac to 264Vac; Output: 48Vdc @ 2500W; 3.3Vdc or 5 Vdc @ 1A
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only, functional
operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of the data sheet.
Exposure to absolute maximum ratings for extended periods can adversely affect the device reliability.
Symbol
Min
Max
Unit
Input Voltage: Continuous
Parameter
VIN
0
264
Vac
Operating Ambient Temperature
TA
-10
701
°C
Tstg
-40
85
°C
1500
Vac
Storage Temperature
I/O Isolation voltage to Frame (100% factory Hi-Pot tested)
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, load, and temperature conditions.
INPUT
Parameter
Symbol
Min
Typ
Max
Unit
Vac
Operational Range
VIN
90
110/230
264
Frequency Range
FIN
47
50/60
63
Hz
Main Output Turn_OFF
VIN
80
Vac
Maximum Input Current, (VIN= 180Vac, VO= VO, set, IO=IO, max)
IIN
16
Aac
IIN
50
Apeak
Cold Start Inrush Current
(Excluding x-caps, 25C, 25% of FL
Analog output range
Vmon
Sourced output current
mV/A
IO
ADC
Digital Interface Specifications
Parameter
Conditions
Symbol
Min
VIH
VIL
2.1
0
IIH
0
Typ
Max
Unit
3.6
0.8
VDC
VDC
PMBus Signal Interface Characteristics
Input Logic High Voltage (CLK, DATA)
Input Logic Low Voltage (CLK, DATA)
Input high sourced current (CLK, DATA)
Output Low sink Voltage (CLK, DATA, SMBALERT#)
Output Low sink current (CLK, DATA, SMBALERT#)
Output High open drain leakage current
(CLK,DATA, SMBALERT#)
PMBus Operating frequency range
IOUT=3.5mA
VOL
10
μA
0.4
VDC
IOL
3.5
mA
VOUT=3.6V
IOH
0
10
μA
Slave Mode
FPMB
10
400
kHz
Measurement System Characteristics (all measurement tolerances are typical estimations under normal operating conditions)
Clock stretching
IOUT measurement range
tSTRETCH
Linear
IOUT measurement accuracy 25°C
25
ms
IRNG
0
208
ADC
IACC
-3
+3
% of FL
14
VDC
VOUT measurement range
VOUT measurement accuracy
Linear
VOUT(rng)
0
VOUT(acc)
-3
+3
%
Temp measurement range
Temp measurement accuracy4
Linear
Temp(rng)
0
120
C
Temp(acc)
-5
+5
C
IIN measurement range
IIN measurement accuracy
Linear
AAC
VIN measurement range
VIN measurement accuracy
Linear
PIN measurement range
PIN measurement accuracy
Linear
Fan Speed measurement range
Linear
Fan Speed measurement accuracy
Fan speed control range
4
-direct-
IIN(rng)
0
40
IIN(acc)
-5
+5
%
VIN(rng)
0
264
VAC
VIN(acc)
-3
+3
%
PN(rng)
0
3000
W
PIN(acc)
-5
+5
%
RPM
0
30k
-5
5
%
0
100
%
Temperature accuracy reduces non-linearly with decreasing temperature
September 8, 2015
©2013 General Electric Company. All rights
reserved.
Page 5
GE
Data Sheet
CAR2548FP series rectifier
Input: 90Vac to 264Vac; Output: 48Vdc @ 2500W; 3.3Vdc or 5 Vdc @ 1A
Environmental Specifications
Parameter
Min
Typ
Max
Units
Ambient Temperature
-105
70
°C
Storage Temperature
-40
85
°C
2250/7382
m/ft
Operating Altitude
Non-operating Altitude
8200/30k
m / ft
Power Derating with Temperature
2.5
%/°C
Power Derating with Altitude
2.0
C/301 m
C/1000 ft
Acoustic noise
55
dbA
Over Temperature Protection
Humidity
Operating
Storage
110/95
30
10
Shock and Vibration acceleration
Notes
Derated above 50C
50C to 70C
Above 2250 m/7382 ft
Full load
°C
Shutdown / restart
95
95
%
Relative humidity, non-condensing
6
Grms
NEBS GR-63-CORE, Level 3, 20 2000Hz, min 30 minutes
Zone
NEBS GR-63-CORE, all floors, Seismic
Zone 4 Designed and tested to meet
NEBS specifications.
Earthquake Rating
4
EMC Compliance
Parameter
Criteria
Conducted emissions
Enclosure
immunity
Test
0.15 – 30MHz
0 – 2 KHz
Radiated emissions
EN55022
A
30 – 10000MHz
Voltage dips
EN61000-4-11
A
-30%, 10ms
B
-60%, 100ms
B
-100%, 5sec
Voltage surge
EN61000-4-5
A
4kV, 1.2/50µs, common mode
A
2kV, 1.2/50µs, differential mode
Fast transients
EN61000-4-4
B
5/50ns, 2kV (common mode)
Conducted RF fields
EN61000-4-6
A
130dBµV, 0.15-80MHz, 80% AM
Radiated RF fields
EN61000-4-3
A
10V/m, 80-1000MHz, 80% AM
ENV 50140
A
EN61000-4-2
B
ESD
5
Level
A
AC input
AC input
immunity
Standard
EN55022, FCC Docket 20780 part 15, subpart J
EN61000-3-2
4kV contact, 8kV air
Designed to start at an ambient down to -40°C; meet spec after 30 min warm up period, may not meet operational limits below -10°C.
September 8, 2015
©2013 General Electric Company. All rights reserved.
Page 6
GE
Data Sheet
CAR2548FP series rectifier
Input: 90Vac to 264Vac; Output: 48Vdc @ 2500W; 3.3Vdc or 5 Vdc @ 1A
Control and Status
Status signals
Control hierarchy: Some features, such as output voltage,
can be controlled both through hardware and firmware. For
example, the output voltage is controlled both by the signal
pin (Vprog) and the PMBus command, (Vout_command) .
Output current monitor (Imon): A voltage level proportional
to the delivered output current is present on this pin. The
signal level is 0. 1V per amp ± 0.25V.
Using output voltage as an example; the Vprog signal pin has
ultimate control of the output voltage until the Vprog is either
> 3Vdc or a no connect. When the programming signal via
Vprog is either a no connect or > 3Vdc, it is ignored, the
output voltage is set at its nominal 12Vdc and the unit output
voltage can be controlled via the PMBus command,
(Vout_command).
Analog controls: Details of analog controls are provided in
this data sheet under Signal Definitions.
Common ground: All signals and outputs are referenced to
Output return. These include ‘Vstb return’ and ‘Signal return’.
Control Signals
Voltage programming (Vprog): An analog voltage on this
signal can vary the output voltage ± 10% from 43.2Vdc to
52.8Vdc. The equation of this signal is:
Vout = 43.2 + 3.3 (Vprog – 0.09) 0.09 < Vprog < 3
If Vprog is > 3V or left open the programming signal is ignored
and the unit output is set at the setpoint of 48Vdc.
Load share (Ishare): This is a single wire analog signal that is
generated and acted upon automatically by power supplies
connected in parallel. The Ishare pins should be tied together
for power supplies if active current share among the power
supplies is desired. No resistors or capacitors should get
connected to this pin.
Remote_ON/OFF: Controls presence of the 12Vdc output
voltage. This is an open collector, TTL level control signal that
needs to be pulled HI externally through a resistor.
A turn OFF command either through this signal (Remote
ON/OFF) or firmware commanded would turn OFF the 12V
output.
Enable: This is a short signal pin that controls the presence of
the 12Vdc main output. This pin should be connected to
‘output return’ on the system side of the output connector.
The purpose of this pin is to ensure that the output turns ON
after engagement of the power blades and turns OFF prior to
disengagement of the power blades.
Write protect (WP): This signal protects the contents of the
EEPROM from accidental over writing. When left open the
EEPROM is write protected. A LO (TTL compatible) permits
writing to the EEPROM. This signal is pulled HI internally by the
power supply.
September 8,
2015
AC OK: A TTL compatible status signal representing whether
the input voltage is within the anticipated range. This signal is
internally pulled HI to 3.3V via a 10kΩ resistor. A (HI) on this
signal indicates that the input voltage is applied within the
specified input range.
DC OK: A TTL compatible status signal representing
whether the output voltage is present. This signal is internally
pulled HI to 3.3V via a 10kΩ resistor. A (HI) on this signal
indicates that the output voltage is present.
Over temp warning: A TTL compatible status signal
representing whether an over temperature exists. This signal
needs to be pulled HI externally through a resistor. Open
collector (HI) on this signal indicates that temperatures are
normal.
If an over temperature should occur, this signal would pull LO
for approximately 10 seconds prior to shutting down the
power supply. The unit would restart if internal temperatures
recover within normal operational levels. At that time the
signal reverts back to its open collector (HI) state.
Fault: A TTL compatible status signal representing whether
a Fault occurred. This signal needs to be pulled HI externally
through a resistor. Open collector (HI) on this signal indicates
that no Fault is present.
This signal activates for OTP, OVP, OCP, AC fault or No output.
PS Present: This pin is connected to ‘output return’ within
the power supply. Its intent is to indicate to the system that a
power supply is present. This signal may need to be pulled HI
externally through a resistor.
Interrupt (SMBAlert#): A TTL compatible status signal,
representing the SMBusAlert# feature of the PMBus
compatible i2C protocol in the power supply. This signal needs
to be pulled HI externally through a resistor.
Serial Bus Communications
The I²C interface facilitates the monitoring and control of
various operating parameters within the unit and transmits
these on demand over an industry standard I²C Serial bus.
All signals are referenced to ‘Signal Return’.
Device addressing: The microcontroller (MCU) and the
EEPROM have the following addresses:
Device
MCU
Broadcast
EEPROM
Address
0xBx
0x00
0xAx
©2013 General Electric Company. All rights reserved.
1
0
1
Address Bit Assignments
(Most to Least Significant)
0 1 1 A2 A1 A0 R/W
0 0 0 0
0
0
0
0 1 0 A2 A1 A0 R/W
Page 7
GE
Data Sheet
CAR2548FP series rectifier
Input: 90Vac to 264Vac; Output: 48Vdc @ 2500W; 3.3Vdc or 5 Vdc @ 1A
The Global Broadcast instruction executes a simultaneous
write instruction to all power supplies. A read instruction
cannot be accessed globally. The three programmable
address bits are the same for all I2C accessible devices within
the power supply.
Address lines (A2, A1, A0): These signal pins allow up to eight
(8) modules to be addressed on a single I²C bus. The pins are
pulled HI internal to the power supply. For a logic LO these
pins should be connected to ‘Output Return’
Serial Clock (SCL): The clock pulses on this line are generated
by the host that initiates communications across the I²C
Serial bus. This signal is pulled up internally to 3.3V by a 10kΩ
resistor. The end user should add additional pull up resistance
as necessary to ensure that rise and fall time timing and the
maximum sink current is in compliance to the I²C
specifications.
Serial Data (SDA): This line is a bi-directional data line. . This
signal is pulled up internally to 3.3V by a 10kΩ resistor. The
end user should add additional pull up resistance as
necessary to ensure that rise and fall time timing and the
maximum sink current is in compliance to the I²C
specifications.
Digital Feature Descriptions
PMBus™ compliance: The power supply is fully compliant to
the Power Management Bus (PMBus™) rev1.2 requirements.
Manufacturer specific commands located between addresses
0xD0 to 0xEF provide instructions that either do not exist in
the general PMBus specification or make the communication
interface simpler and more efficient.
Master/Slave: The ‘host controller’ is always the MASTER.
Power supplies are always SLAVES. SLAVES cannot initiate
communications or toggle the Clock. SLAVES also must
respond expeditiously at the command of the MASTER as
required by the clock pulses generated by the MASTER.
Clock stretching: The ‘slave’ µController inside the power
supply may initiate clock stretching if it is busy and it desires
to delay the initiation of any further communications. During
the clock stretch the ‘slave’ may keep the clock LO until it is
ready to receive further instructions from the host controller.
The maximum clock stretch interval is 25ms.
The host controller needs to recognize this clock stretching,
and refrain from issuing the next clock signal, until the clock
line is released, or it needs to delay the next clock pulse
beyond the clock stretch interval of the power supply.
Note that clock stretching can only be performed after
completion of transmission of the 9th ACK bit, the exception
being the START command.
Figure 1. Example waveforms showing clock stretching.
I²C Bus Lock-Up detection: The device will abort any
transaction and drop off the bus if it detects the bus being
held low for more than 35ms.
Communications speed: Both 100kHz and 400kHz clock
rates are supported. The power supplies default to the
100kHz clock rate. The minimum clock speed specified by
SMBus is 10 kHz.
Packet Error Checking (PEC): Although the power supply will
respond to commands with or without the trailing PEC, it is
highly recommended that PEC be used in all communications.
The integrity of communications is compromised if packet
error correction is not employed. There are many functional
features, including turning OFF the main output, that should
require validation to ensure that the correct command is
executed.
PEC is a CRC-8 error-checking byte, based on the polynomial
C(x) = x8 + x2 + x + 1, in compliance with PMBus™
requirements. The calculation is based in all message bytes,
including the originating write address and command bytes
preceding read instructions. The PEC is appended to the
message by the device that supplied the last byte.
SMBAlert#: The µC driven SMBAlert# signal informs the
‘master/host’ controller that either a STATE or ALARM change
has occurred. Normally this signal is HI. The signal will change
to its LO level if the power supply has changed states and the
signal will be latched LO until the power supply either receives
a ‘clear’ instruction as outlined below or executes a READ
STATUS_WORD. If the alarm state is still present after the
STATUS registers were reset, then the signal will revert back
into its LO state again and will latch until a subsequent reset
signal is received from the host controller.
The signal will be triggered for any state change, including
the following conditions;
The power supply will clear the SMBusAlert# signal (release
the signal to its HI state) upon the following events:
Clock
Stretch
September 8, 2015
VIN under or over voltage
Vout under or over voltage
IOUT over current
Over Temperature warning or fault
Fan Failure
Communication error
PEC error
Invalid command
Detected internal faults
Receiving a CLEAR_FAULTS command
The main output recycled (turned OFF and then ON) via
the ENABLE signal pin
The main output recycled (turned OFF and then ON) by
the OPERATION command
Execution of a READ of the STATUS_WORD register
Global broadcast: This is a powerful command because it
can instruct all power supplies to respond simultaneously in
one command. But it does have a serious disadvantage. Only
a single power supply needs to pull down the ninth
acknowledge bit. To be certain that each power supply
responded to the global instruction, a READ instruction should
©2013 General Electric Company. All rights reserved.
Page 8
GE
Data Sheet
CAR2548FP series rectifier
Input: 90Vac to 264Vac; Output: 48Vdc @ 2500W; 3.3Vdc or 5 Vdc @ 1A
be executed to each power supply to verify that the
command properly executed. The GLOBAL BROADCAST
command should only be executed for write instructions to
slave devices.
Read back delay: The power supply issues the SMBAlert #
notification as soon as the first state change occurred. During
an event a number of different states can be transitioned to
before the final event occurs. If a read back is implemented
rapidly by the host a successive SMBAlert# could be triggered
by the transitioning state of the power supply. In order to
avoid successive SMBAlert# s and read back and also to
avoid reading a transitioning state, it is prudent to wait more
than 2 seconds after the receipt of an SMBAlert# before
executing a read back. This delay will ensure that only the
final state of the power supply is captured.
Successive read backs: Successive read backs to the power
supply should not be attempted at intervals faster than every
one second. This time interval is sufficient for the internal
processors to update their data base so that successive
reads provide fresh data.
Byte count = N
8
……….
A
1
A
Data 1
8
Data 48
A
Data 2
1
A
8
PEC
A
1
A
1
P
PMBusTM Commands
Standard instruction: Up to two bytes of data may follow an
instruction depending on the required data content. Analog
data is always transmitted as LSB followed by MSB. PEC is
optional and includes the address and data fields.
1
S
8
Slave address
8
Low data byte
1
A
Wr
1
A
8
Command Code
8
High data byte
1
A
1
A
8
PEC
1
A
1
P
Master to Slave
Slave to Master
SMBUS annotations; S – Start , Wr – Write, Sr – re-Start, Rd
– Read,
A – Acknowledge, NA – not-acknowledged, P – Stop
Standard READ: Up to two bytes of data may follow a READ
request depending on the required data content. Analog
data is always transmitted as LSB followed by MSB. PEC is
mandatory and includes the address and data fields. PEC is
optional and includes the address and data fields.
1
S
7
Slave address
1
Sr
1
Wr
7
Slave Address
8
MSB
1
Rd
1
A
1
A
8
Command Code
1
A
8
LSB
8
PEC
1
A
1
A
1
No-ack
1
P
Block communications: When writing or reading more than
two bytes of data at a time BLOCK instructions for WRITE and
READ commands must be used instead of the Standard
Instructions Error! Reference source not found. write any
number of bytes greater than two.
Block write format:
1
S
7
Slave address
8
September 8, 2015
1
Wr
1
8
1
A
8
Command Code
1
8
1
A
1
©2013 General Electric Company. All rights reserved.
Page 9
GE
Data Sheet
CAR2548FP series rectifier
Input: 90Vac to 264Vac; Output: 48Vdc @ 2500W; 3.3Vdc or 5 Vdc @ 1A
Block read format:
1
S
7
Slave address
1
Sr
1
Wr
7
Slave Address
8
Byte count = N
8
……….
1
Rd
1
A
1
A
1
A
8
Command Code
1
A
1
A
8
Data 1
8
Data 48
1
A
1
A
8
Data 2
1
A
8
PEC
1
NoAck
1
P
Linear Data Format The definition is identical to Part II of the
PMBus Specification. All standard PMBus values, with the
exception of output voltage related functions, are
represented by the linear format described below. Output
voltage functions are represented by a 16 bit mantissa.
Output voltage has a E=9 constant exponent.
The Linear Data Format is a two byte value with an 11-bit,
two’s complement mantissa and a 5-bit, two’s complement
exponent or scaling factor, its format is shown below.
Bit 7
Data Byte High
6 5 4 3 2
Exponent (E)
1
0
7
Data Byte Low
6 5 4 3 2
Mantissa (M)
1
0
The relationship between the Mantissa, Exponent, and Actual
Value (V) is given by the following equation:
V M 2E
Where: V is the value, M is the 11-bit, two’s
omplement mantissa, E is the 5-bit, two’s complement
exponent
PMBusTM Command set:
Command
Operation
ON_OFF_config
Clear_faults
Write_protect
Store_default_all
Restore_default_all
Capability
Vout_mode
Vout_command
Fan_command_1
Vout_OV_fault_limit
Vout_OV_fault_response
Vout_OV_warn_limit
Vout_UV_warn_limit
Vout_UV_fault_limit
Vout_UV_fault_response
Iout_OC_fault_limit
Iout_OC_fault_response
Iout_OC_warn_limit
OT_fault_limit
OT_fault_response
OT_warn_limit
UT_warn_limit
September 8, 2015
Hex
Code
01
02
03
10
11
12
19
20
21
3B
40
41
42
43
44
45
46
47
4A
4F
50
51
52
Data
Byte
1
1
0
1
0
0
1
1
2
2
2
1
2
2
2
1
2
1
2
2
1
2
2
Function
Output ON/OFF
09, output ON default
Clear Status
Write control
Store permanently
Reset defaults
30h, 400kHz, SMBAlert
Vout constants
Set Vout
Set fan speed in RPM
Set OV fault limit
Set OV warn limit
Set UV warn limit
Latch or hiccup
Set OC warn limit
Hex
Code
53
54
55
57
58
59
78
79
7A
7B
7C
7D
7E
7F
80
8B
8C
8D
96
98
99
9A
9B
9C
9D
9E
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
B0
B1
D0
D3
D4
D6
D7
D8
E0
E1
E2
Data
Field
2
1
2
2
2
2
1
2
1
1
1
1
1
1
1
2
2
2
2
1
5
15
4
4
6
15
2
2
2
2
2
2
2
2
2
2
48
48
1
2
2
1
1
2
2
2
2
CMD_OFF_ I2C
OTF_limit_ I2C
E3
E4
2
2
OTF_recovery_ I2C
E5
2
DCOKHI_ I2C
DCOKLO_ I2C
E6
E7
2
2
Command
UT_fault_limit
UT_fault_response
Vin_OV_fault_limit
Vin_OV_warn_limit
Vin_UV_warn_limit
Vin_UV_fault_limit
Status_byte
Status_word
Status_Vout
Status_Iout
Status_input
Status_temperature
Status_CML
Status_other
Status_mfr_specific
Read_Vout
Read_Iout
Read_temperature
Read_Pout
PMBus revision
Mfr_ID
Mfr_model
Mfr_revision
Mfr_location
Mfr_date
Mfr_serial
Mfr_Vin_min
Mfr_Vin_max
Mfr_Iin_max
Mfr_Pin_max
Mfr_Vout_min
Mfr_Vout_max
Mfr_Iout_max
Mfr_Pout_max
Mfr_Tambient_max
Mfr_Tambient_min
User_data_00
User_data_01
FRW_revision
Ilimit_control_I2C
Vout_control_ I2C
Fan_duty_cycle
Fan_speed
Vprog_ext
Read_Vout_ I2C
Read_Iout_ I2C
Read_TS_ I2C
Function
Set OV warn limit
Set UV warn limit
Set UV shutdown
Read output voltage
Read output current
Read Temperature
FRU_ID
User memory space
User memory space
Ilimit set (1/100A)
Vout set (1/512V)
Duty_cycle in %
Control in duty cycle
1/512V
1/100A
Heat sink temp C
01-OFF, 00-ON
OT fault limit C
OT fault recovery C
High OV fault (1/512V)
Low OV fault (1/512V)
Latch or hiccup
Set OT warn limit
©2013 General Electric Company. All rights reserved.
Page 10
GE
Data Sheet
CAR2548FP series rectifier
Input: 90Vac to 264Vac; Output: 48Vdc @ 2500W; 3.3Vdc or 5 Vdc @ 1A
Status Register Bit Allocation:
Register
Code
Status_Byte
78
Bit
7
6
5
4
3
2
1
0
7
6
5
4
Status_word
(includes Status_byte)
79
Status_Vout
7A
Status_Iout
7B
Status_input
7C
Status_temperature
7D
September 8, 2015
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
Function
Busy
DC_ OFF
Output OV Fault detected
Output OC Fault detected
Input UV Fault detected
Temperature Fault/warning
detected
CML (communication fault)
detected
None of Below
OV Fault/Warning detected
OC Fault/Warning detected
Input Fault/Warning detected
Mfr_specific register change
detected
DC_OFF
Fan Fault or Warning
detected
Other fault
Unknown
Vout UV Fault
Vout UV Warning
Vout OV Warning
Vout OV Fault
N/A
N/A
N/A
N/A
IOUT OC Fault
N/A
IOUT OC Warning
N/A
N/A
N/A
N/A
N/A
Vin OV Fault
Vin OV Warning
Vin UV Warning
Vin UV Fault
N/A
N/A
N/A
N/A
OT Fault
OT Warning
N/A
N/A
N/A
N/A
N/A
N /A
©2013 General Electric Company. All rights reserved.
Page 11
GE
Data Sheet
CAR2548FP series rectifier
Input: 90Vac to 264Vac; Output: 48Vdc @ 2500W; 3.3Vdc or 5 Vdc @ 1A
Register
Code Bit
7
6
5
4
Status_cml
7E
3
2
1
0
7
6
5
4
Status_mfr_specific 80
3
2
1
0
Function
Invalid/Unsupported Command
Invalid/Unsupported Data
Packet Error Check Failed
Memory Fault Detected
Processor Fault Detected
Reserved
Other Communications Fault
Other Memory or Logic Fault
3.3V_fault
N/A
Interrupt
Fault detected
PS_remote_OFF
DC_fault
INPUT_fault
AC: 0 –high line, 1 –low line
Command Descriptions
Operation (01) : By default the Power supply is turned ON at
power up as long as Power ON/OFF signal pin is active HI. The
Operation command is used to turn the Power Supply ON or
OFF via the PMBus. The data byte below follows the
OPERATION command.
FUNCTION
Unit ON
Unit OFF
DATA BYTE
80
00
To RESET the power supply cycle the power supply OFF, wait
at least 2 seconds, and then turn back ON. All alarms and
shutdowns are cleared during a restart.
Clear_faults (03): This command clears all STATUS and
FAULT registers and resets the SMBAlert# line.
If a fault still persists after the issuance of the clear_faults
command the specific registers indicating the fault are reset
and the SMBAlert# line is activated again.
WRITE_PROTECT register (10): Used to control writing to the
PMBus device. The intent of this command is to provide
protection against accidental changes. All supported
command parameters may have their parameters read,
regardless of the write_protect settings. The contents of this
register can be stored to non-volatile memory using the
Store_default_code command. The default setting of this
register is disable_all_writes except write_protect 0x80h.
FUNCTION
Enable all writes
Disable all writes except write_protect
Disable all writes except write_protect and
OPERATION
DATA BYTE
00
80
40
Vout_Command (21) : This command is used to change the
output voltage of the power supply. Changing the output
voltage should be performed simultaneously to all power
supplies operating in parallel using the Global Address
(Broadcast) feature. If only a single power supply is instructed
to change its output, it may attempt to source all the required
power which can cause either a power limit or shutdown
condition.
September 8, 2015
Software programming of output voltage permanently
overrides the set point voltage configured by the Vprog
signal pin. The program no longer looks at the ‘Vprog pin’ and
will not respond to any hardware voltage settings. If power is
removed from the µController it will reset itself into its default
configuration looking at the Vprog signal for output voltage
control. In many applications, the Vprog pin is used for
setting initial conditions, if different that the factory setting.
Software programming then takes over once I2C
communications are established.
To properly hot-plug a power supply into a live backplane, the
system generated voltage should get re-configured into
either the factory adjusted firmware level or the voltage level
reconfigured by the margin pin. Otherwise, the voltage state
of the plugged in power supply could be significantly different
than the powered system.
Vout_OV_warn_limit (42): OV_warning is extremely useful
because it gives the system controller a heads up that the
output voltage is drifting out of regulation and the power
supply is close to shutting down. Pre-amative action may be
taken before the power supply would shut down and
potentially disable the system.
OC and OT_fault_ response (47, 50): The default response for
both OC and OT is auto_restart (hiccup). Each register,
individually, can be reconfigured into a latched state.
Latched and hiccup are the only supported states.
Restart after a latch off: Either of four restart possibilities are
available. The hardware pin Remote ON/OFF may be turned
OFF and then ON. The unit may be commanded to restart via
i2c through the Operation command by first turning OFF then
turning ON . The third way to restart is to remove and reinsert
the unit. The fourth way is to turn OFF and then turn ON ac
power to the unit. The fifth way is by changing firmware from
latch off to restart. Each of these commands must keep the
power supply in the OFF state for at least 2 seconds, with the
exception of changing to restart.
A power system that is comprised of a number of power
supplies could have difficulty restarting after a shutdown
event because of the non-synchronized behavior of the
individual power supplies. Implementing the latch-off
mechanism permits a synchronized restart that guarantees
the simultaneous restart of the entire system.
A synchronous restart can be implemented by;
1. Issuing a GLOBAL OFF and then ON command to all power
supplies,
2. Toggling Off and then ON the Remote ON/OFF signal
3. Removing and reapplying input commercial power to the
entire system.
The power supplies should be turned OFF for at least 20 – 30
seconds in order to discharge all internal bias supplies and
reset the soft start circuitry of the individual power supplies.
Auto_restart: Auto-restart is the default configuration for
recovering from over-current and over-temperature
shutdowns.
An overvoltage shutdown is followed by three attempted
restarts, each restart delayed 1 second, within a 1 minute
window. If within the 1 minute window three attempted
restarts failed, the unit will latch OFF. If less than 3
shutdowns occur within the 1 minute window then the count
©2013 General Electric Company. All rights reserved.
Page 12
GE
Data Sheet
CAR2548FP series rectifier
Input: 90Vac to 264Vac; Output: 48Vdc @ 2500W; 3.3Vdc or 5 Vdc @ 1A
for latch OFF resets and the 1 minute window starts all over
again.
Control and Read accuracy:
Vin_UV_warn_limit (58): This is another warning flag
indicating that the input voltage is decreasing dangerously
close to the low input voltage shutdown level.
The estimates below are believed to be reasonable under
most operating conditions. However, these are typical
numbers and not hard bound values that cannot be
exceeded. In most nominal operating conditions the returned
values are significantly better than these estimates.
Status_word (79): returns two bytes of information. The
upper byte bit functionality is tabulated in the Status_word
section. The lower byte bit functionality is identical to
Status_byte.
Fan_speed (D7): This register can be used to ‘read’ the fan
speed in adjustment percent (0 – 100%) or set the fan speed
in adjustment percent (0 – 100%). The speed of the fan
cannot be reduced below what the power supply requires for
its operation. The register value is the percent number, it is
not in linear format.
Invalid commands or data: The power supply notifies the
MASTER if a non-supported command has been sent or
invalid data has been received. Notification is implemented
by setting the appropriate STATUS and ALARM registers and
setting the SMBAlert# flag.
If a non-supported read is requested the power supply will
return all 0x00h.
Restart after a lachoff: To restart after a latch_off either of
four restart mechanisms are available. The hardware pin
Remote ON/OFF may be turned OFF and then ON. The unit
may be commanded to restart via i2c through the Operation
command by first turning OFF then turning ON . The third way
to restart is to remove and reinsert the unit. The fourth way is
to turn OFF and then turn ON ac power to the unit. The fifth
way is by changing firmware from latch off to restart. Each
of these commands must keep the power supply in the OFF
state for at least 2 seconds, with the exception of changing to
restart.
A successful restart shall clear all alarm registers.
A power system that is comprised of a number of power
supplies could have difficulty restarting after a shutdown
event because of the non-synchronized behavior of the
individual power supplies. Implementing the latch-off
mechanism permits a synchronized restart that guarantees
the simultaneous restart of the entire system.
A synchronous restart can be implemented by;
FUNCTION
Vout_command
Vout_OV_fault_limit
Iout_OC_warn_limit
OT_warn_limit
Vin_UV_warn_limit
Vin_UV_fault_limit
Read_Vout
Read_Iout
Read_temperature
Read_Pout
ACCURACY
± 2%
± 3%
± 4% of FL
± 5C
± 3%
± 3%
± 2%
± 4% of FL
± 5C
±5%
EEPROM
The microcontroller has 96 bytes of EEPROM memory
available for the system host.
Another separate EEPROM IC will provide another 128 bytes
of memory with write protect feature. Minimum information
to be included in this separate EEPROM: model number,
revision, date code, serial number etc.
LEDs
Three LEDs are located on the front faceplate. The
AC_OK LED provides visual indication of the INPUT signal
function. When the LED is ON GREEN the power supply
input is within normal design limits.
When the DC_OK LED is GREEN the DC output is
present.
When the FAULT_LED is RED then a fault condition exists
and the power supply may not provide output power. The
table below further defines these states:
1. Issuing a GLOBAL OFF and then ON command to all power
supplies,
2. Toggling Off and then ON the Remote ON/OFF signal
3. Removing and reapplying input commercial power to the
entire system.
It is good practice to turn OFF the power supplies for about
20 – 30 seconds in order to discharge all internal bias supplies
and reset the soft start circuitry of the individual power
supplies.
September 8, 2015
©2013 General Electric Company. All rights reserved.
Page 13
GE
Data Sheet
CAR2548FP series rectifier
Input: 90Vac to 264Vac; Output: 48Vdc @ 2500W; 3.3Vdc or 5 Vdc @ 1A
Alarm Table
LED Indicator
AC OK
DC OK
FAULT
FAULT
DC OK
AC OK
TEMP OK
Normal Operation
Low or NO INPUT
Green
OFF
OFF
Red
High
Low
High
Low
High
Low
High
High
OFF
Red
Low
Low
High
High
OFF
OFF
Red
Low
Low
Low
Low
High
High
High
Low
3
OVP
Green
OFF
Green
4
5
Over Current
Over Temp Fault
Green
Green
1
2
Monitoring Signals
Test Condition
Red
Note: Test condition #2 has 2 modules working in parallel. One module is running and the other has no AC.
Outline Drawing
14.25 ±.020
LATCH
2X
40X28mm FANS
POT ADJ.
4.000
±.020
AIR FLOW
POT ADJ.
.33
HANDLE
1.610
±.020
CAPTIVE SCREW
RAF P/N 369
.100
.060
14.69
1.610
BEZEL
SIGNAL A1
4.000
BEZEL
POWER PIN P1
TEST
CONNECTOR
GREEN LED (AC OK)
1.879
±.015
.528 ±.015
GREEN LED (DC OK)
RED LED (FAULT)
September 8, 2015
©2013 General Electric Company. All rights reserved.
Page 14
GE
Data Sheet
CAR2548FP series rectifier
Input: 90Vac to 264Vac; Output: 48Vdc @ 2500W; 3.3Vdc or 5 Vdc @ 1A
Connector Pin Assignments
Mating Connector:
Pin
FCI Berg P/N: 51939-030LF or Molex 87663-9002
Mating connector: 51915-051LF or Molex 87664-2004
Function
Pin
Function
Pin
Function
Pin
Function
A1
Vstb [3.3V]
B1
Fault
C1
ISHARE
D1
VProg
A2
Vstb [3.3V] Return
B2
I Monitor (IMON)
C2
N/C
D2
OVP Test Point
A3
Signal Return
B3
PS Present
C3
Over Temp Warning
D3
Remote ON/OFF
A4
Write Protect (WP)
B4
Enable: “0” –ON “1” -OFF
C4
I2C Address (A0)
D4
DC OK
A5
Remote Sense (+)
B5
2
SDA (I C bus)
C5
I C Address (A1)
D5
AC OK
A6
Remote Sense (-)
B6
SCL (I2C bus)
C6
I2C Address (A2)
D6
Interrupt
P7
Output Return
2
P1
Line
P2
Neutral
P3
Chassis
P4
+Vout
P5
+Vout
P6
Output Return
Contact Us
For more information, call us at
USA/Canada:
+1 888 546 3243, or +1 972 244 9288
Asia-Pacific:
+86.021.54279977*808
Europe, Middle-East and Africa:
+49.89.878067-280
India:
+91.80.28411633
www.ge.com/powerelectronics
September 8,
2015
©2013 General Electric Company. All rights reserved.
Page 15
GE
Data Sheet
CAR2548FP series rectifier
Input: 90Vac to 264Vac; Output: 48Vdc @ 2500W; 3.3Vdc or 5 Vdc @ 1A
Ordering Information
Please contact your GE Sales Representative for pricing, availability and optional features.
PRODUCT
2500W Front-End
10Kw Shelf
DESCRIPTION
PART NUMBER
+48Vout Front-End, 3.3Vaux, low line power capacity 1000W
CAR2548FP-Z01A
Shelf for CAR2548FP – hold 4 modules
ACE254RUW-1A
PART NUMBER DEFINITION GUIDE EXAMPLE
CAR
25
48
FP
Output Power
25 = 2500W
Output voltage
48 = 48Vdc
Type
FP – AC; Vo-positive
TN – AC; Vo_negative
DC - DC
September 8, 2015
x
x
x
Options
B – bezel
R – reverse airflow
Vsb = 5
Z
01 A
A – Standard
model
RTM
RoHS
Blank – non compliant
Y – 5 of 6 compliant
Z – 6 of 6 compliant
©2013 General Electric Company. All rights reserved.
Page 16
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