GE Energy
Data Sheet
CAR2548FP series rectifier
Input: 90Vac to 264Vac; Output: 48Vdc @ 2500W; 3.3Vdc or 5 Vdc @ 1A
Features
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
Auto recoverable OC & OT protection
Operating temperature: -10 - 70C (de-rated above 50C)
Digital status & control: I
2
C and PMBus serial bus
EN/IEC/UL60950-1 2
nd
edition; UL, CSA and VDE
EMI: class B FCC docket 20780 part 15, EN55022
Meets EN6100 immunity and transient standards
Shock & vibration: NEBS GR-63-CORE, level 3
Applications
48Vdc distributed power architectures
Cellular Base Stations
Blade Servers
Network Equipment
Network Attached Storage
Telecom Access Nodes
Routers/Switches
Broadband Switches
ATE Equipment
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/in
3
. 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 I
2
C 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.
November 1, 2012
©2012 General Electric Company. All rights reserved.
GE Energy
CAR2548FP series rectifier
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.
Input: 90Vac to 264Vac; Output: 48Vdc @ 2500W; 3.3Vdc or 5 Vdc @ 1A
Parameter
Input Voltage: Continuous
Operating Ambient Temperature
Storage Temperature
I/O Isolation voltage to Frame (100% factory Hi-Pot tested)
Device
All
All
All
All
Symbol
VIN
TA
Tstg
Min
0
-10
-40
Max
264
70
1
Unit
V
ac
°C
°C
V
ac
85
1500
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, load, and temperature conditions.
INPUT
Parameter
Operational Range
Frequency Range
Main Output Turn_OFF
Maximum Input Current
(V
IN
= 180Vac, V
O
= V
O, set
, I
O
=I
O, max
)
Cold Start Inrush Current
(Excluding x-caps, 25C, <10ms, per ETSI 300-132)
Efficiency
(T
amb
=25C, V
in
= 230Vac, V
out
= 48Vdc, I
O
=I
O, max
)
Power Factor
(Vin=230Vac, I
O
=I
O, max
)
Holdup time
(Vin= 230Vac, Vout= 48Vdc, Tamb 25C, I
O
=I
O, max
)
Early warning prior to loss of DC output below regulation
Ride through
Leakage Current
(Vin= 250Vac, Fin = 60Hz)
Isolation
Device
All
All
All
All
All
All
All
All
All
All
All
Input/Output
Input/Frame
Output/Frame
All
Symbol
V
IN
F
IN
V
IN
I
IN
I
IN
PF
T
Min
90
47
Typ
110/23
0
50/60
Max
264
63
80
16
50
Unit
V
ac
Hz
V
ac
A
ac
A
peak
%
92
0.99
16.8
2
ms
ms
ms
mArms
V
ac
V
ac
V
dc
T
I
IN
3000
1500
100
8.3
3
48V
dc
MAIN OUTPUT
Parameter
Output Power
High Line Operation
Low Line Operation
180 – 264 Vac
99Vac [Z03A/Z01A]
90 – 98 Vac [Z03A/Z01A]
Device
All
All
All
All
All
Symbol
W
Min
0
0
0
47.95
-3
Typ
-
-
48.00
Max
2500
1300/1000
1200/1000
48.05
+3
540
+3
Unit
W
W
V
dc
%
mV
p-p
%
Set point
Overall regulation (load, temperature, aging)
Ripple and noise
2
Turn-ON overshoot
V
out
1
2
Derated above 50C at 2.5%/C
Measured across a 10µf electrolytic and a 0.1µf ceramic capacitors in parallel. 20MHz bandwidth
November 1, 2012
©2012 General Electric Company. All rights reserved.
Page 2
GE Energy
CAR2548FP series rectifier
48V
dc
MAIN OUTPUT (continued)
Parameter
Turn-ON delay
Remote ON/OFF delay time
Turn-ON rise time (10 – 90% of V
out
)
Transient response 50% step [10%-60%, 50% - 100%]
(dI/dt – 1A/µs, recovery 300µs)
Programmable range (hardware & software)
Overvoltage protection, latched
(recovery by cycling OFF/ON via hardware or software)
Output current
Current limit, Hiccup (programmable level)
Active current share
Input: 90Vac to 264Vac; Output: 48Vdc @ 2500W; 3.3Vdc or 5 Vdc @ 1A
Device
All
All
All
All
Symbol
T
Min
Typ
Max
2
40
50
Unit
sec
ms
ms
%V
out
V
dc
V
dc
A
dc
A
dc
% of FL
V
out
All
All
All
All
All
I
out
I
out
-5
43.2
58
0
57.3
-5
59
+5
52.8
60
52
67.7
+5
AUXILIARY OUTPUT
Parameter
Set point
Overall regulation (load, temperature, aging)
Ripple and noise
Output current
Overload protection -
Overvoltage protection
Isolation
Output/Frame
All
100
V
dc
Device
All
All
All
All
Symbol
V
out
V
out
I
out
Min
-5
0
Typ
3.3 / 5.0
Max
+5
50
1
Unit
V
dc
%
mVp-p
A
dc
Environmental, Reliability
Parameter
Ambient Temperature
Operating
Altitude Operating
Power Derating
Storage
Altitude non-operating
Over Temperature Protection
Humidity
Operating
Storage
30
10
-10
3
50
2250
2.5
85
8200
110 / 95
95
95
6
4
100,000
200,000
°C
m
%/°C
°C
m
°C
%
Grms
Zone
Hrs
Air inlet from sea level to 5,000 feet.
7400 ft
51°C to 70C
30,000 ft
Shutdown / Restart
Relative humidity, non-condensing
NEBS GR-63-CORE, Level 3, 20 -2000Hz, minimum 30
minutes
NEBS GR-63-CORE, all floors, Seismic Zone 4 Designed and
tested to meet NEBS specifications.
Full load, 50C ambient, per Bellcore RPP
Demonstrated
Min
Typ
Max
Units
Notes
-40
Shock and Vibration acceleration
Earthquake Rating
MTBF
3
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.
November 1, 2012
©2012 General Electric Company. All rights reserved.
Page 3
GE Energy
CAR2548FP series rectifier
EMC
Parameter
AC input
Input: 90Vac to 264Vac; Output: 48Vdc @ 2500W; 3.3Vdc or 5 Vdc @ 1A
Criteria
Conducted emissions
Radiated emissions**
Voltage dips
EN55022
EN61000-4-11
Standard
EN55022, FCC Docket 20780 part 15, subpart J
Level
A
A
A
B
B
Test
0.15 – 30MHz
30 – 10000MHz
-30%, 10ms
-60%, 100ms
-100%, 5sec
4kV, 1.2/50µs, common mode
2kV, 1.2/50µs, differential mode
5/50ns, 2kV (common mode)
130dBµV, 0.15-80MHz, 80% AM
10V/m, 80-1000MHz, 80% AM
4kV contact, 8kV air
Voltage surge
immunity
Enclosure
immunity
Fast transients
Conducted RF fields
Radiated RF fields
ESD
EN61000-4-5
EN61000-4-4
EN61000-4-6
EN61000-4-3
ENV 50140
EN61000-4-2
A
A
B
A
A
A
B
** Radiated emissions compliance is contingent upon the final system configuration.
Status and Control
Some functions have two means of monitor/control; A
signal level that represents the analog value being
2
measured or controlled, or, reading/writing via the i C
port the measured value or the control command.
Unless otherwise noted, control via the signals pins is
‘active’ so long that a firmware based command is not
initiated. Once firmware initiates a command that is also
represented on a signal pin, the firmware takes over and
replaces the hardware based control signal. Firmware
control is maintained until bias power to the processor is
interrupted. Once bias power is removed the processor
resets and the analog signal pin control is ‘active’ until
firmware takes over control.
Details of analog controls are provided in this data sheet
under Signal Definitions. GE Energy will provide separate
application notes on the I2C protocol. Contact your local
GE Energy representative for details.
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 the presence of the main
48Vdc output voltage. This is an open collector, TTL level
control signal. This signal needs to be pulled HI
externally through a resistor. Maximum collector voltage
is 12Vdc and the maximum sink current is 1mA. A Logic
1 (TTL HI level) turns ON the 48Vdc output, while a Logic
0 (TTL LO level) turns OFF the 48Vdc output.
A turn OFF command either through this signal (Remote
ON/OFF) or firmware commanded would turn OFF the
48V output.
Enable:
This is a short signal pin that controls the
presence of the 48Vdc 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.
Signal Definitions
All signals and outputs are referenced to Output return.
These include ‘Vstb return’ and ‘Signal return’.
Input Signals
Voltage programming (V
prog
):
An analog voltage on this
signal can vary the output voltage ± 10% from 43.2Vdc to
52.8Vdc. The equation of this signal is:
V
out
= 43.2 + 3.3 (V
prog
– 0.09) 0.09 < V
prog
< 3
If Vprog is > 3V or left open the programming signal is
ignored and the unit output is set at the setpoint of
48Vdc.
Output signals
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.
November 1, 2012
©2012 General Electric Company. All rights reserved.
Page 4
GE Energy
CAR2548FP series rectifier
Input: 90Vac to 264Vac; Output: 48Vdc @ 2500W; 3.3Vdc or 5 Vdc @ 1A
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. Maximum sink current
≤
20mA and the max
voltage is 12Vdc. Open collector (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. Maximum
sink current
≤
4mA and the max voltage is 12Vdc. 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.
Maximum sink current
≤
20mA and the max voltage is
12Vdc. 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. Maximum sink current
≤
20mA and the max voltage is 12Vdc. 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:
A TTL compatible status signal, representing
2
the SMBusAlert# feature of the PMBus compatible i C
protocol in the power supply. This signal needs to be
pulled HI externally through a resistor. Maximum sink
current
≤
4mA and the pull up resistor should be tied to
3.3Vdc. Open collector (HI) on this signal indicates that
no Interrupt has been triggered.
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.
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.
See the communications protocol for further information.
Communications Protocol
The I²C protocol is described in detail by the
I C and
PMBus Serial Communications Protocol for the CAR
Family of Power Supplies
application note.
The following I²C protocol commands are not supported:
FAN1_SPEED_ I²C
FAN2_SPEED_ I²C
The following PMBus protocol commands are not
supported:
FAN_COMMAND_1
STATUS_FAN_1_2
READ_VIN
READ_IIN
READ_FAN_SPEED_1
READ_FAN_SPEED_2
READ_PIN
0 x 21
0 x 81
0 x 88
0 x 89
0 x 90
0 x 91
0 x A3
2
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
EEPROM
Address
0xBx
0xAx
1
1
Address Bit Assignments
(Most to Least Significant)
0
1
1 A2 A1 A0
0
1
0 A2 A1 A0
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.
R/W
R/W
November 1, 2012
©2012 General Electric Company. All rights reserved.
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