GE Energy Data Sheet
September 17, 2012 ©2012 General Electric Company. All rights reserved.
CP2500DC54-PE Compact Power Line DC/DC Converter
Input: -40 to -72Vdc; Outputs: ±54 Vdc @ 2500W; 5 Vdc @ 4W
Features
Compact 1-RU form factor providing 22 W/in3
Input Current < 75A at 40 Vdc input
Programmable output voltage from 44V to 58 Vdc,
Output defaulted to 54V
RS4851 and PMBus compliant dual I2C serial bus communications
Designed to IEEE802.3af Compliance, 2250 output*** isolation to
chassis/signals for POE applications. (see ordering info)
DC Output over-voltage and over-current protection
DC Input over-voltage and under-voltage protection
Over-temperature warning and protection
Redundant, parallel operation with active load sharing and redundant
+5V Aux power
Remote ON/OFF
Hot insertion/removal (hot plug)
Four front panel LED indicators
UL* Recognized to UL60950-1, CAN/ CSA† C22.2 No. 60950-1, and
VDE‡ 0805-1 Licensed to IEC60950-1
CE mark meets 2006/95/EC directive §
Internal variable-speed fan control
RoHS 6 compliant
Applications
48Vdc distributed power architectures
Power over Ethernet
Routers/Switches
VoIP/Soft Switches
LAN/WAN/MAN applications
File servers
Indoor wireless
Telecommunications equipment
Enterprise Networks
SAN/NAS/iSCSI applications
Advanced workstations
Description
The CP2500DC54-PE DC/DC Converter, [also called a Power Entry Module (PEM)] in the Compact Power Line platform is
specifically designed to operate as an integral part of a complete distributed power system. High-density, front-to-back
airflow is designed for minimal space utilization and is highly expandable for future growth. This PEM complements the
CP2500AC54 rectifier, thus providing comprehensive solutions for systems connected either to commercial ac mains,
48/60Vdc power plants or telecom central offices. The standard product is provided with many features including PoE
isolation, RS485 and dual-redundant I2C communications busses that allow it to be used in a broad range of applications.
Feature set flexibility makes this Power Entry Module an excellent choice for applications requiring modular dc-to-dc bulk
intermediate voltages, such as in distributed power.
* 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.
§ This product is 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.
1 Introduced in 2011
GE Energy Data Sheet
CP2500DC54-PE series dc-dc converter
Input: -40Vdc to -72Vdc; Outputs: ±54Vdc @ 2500W; 5Vdc @ 4W
September 17, 2012 ©2012 General Electric Company. All rights reserved. Page 2
Electrical Specifications
Input
Parameter Min Typ
Max
Units
Notes
Operating Voltage -40 -72 Vdc
Low Input Shutdown of Main
output
-38.5 -39 -39.5 Vdc
Input Turn-ON of both Outputs -43 -43.5 -44
Vdc
Reverse Input Voltage The module shall not be damaged
Idling Power Output OFF
Output ON
35
60
W 5Vdc output at no-load
Both outputs at no-load
Input Current 75 Adc At input voltages > 40Vdc
Cold Start Inrush Current
100 Adc Measured at 25C for all line conditions. Does not include X-
capacitor charging spike
Efficiency 92
88
% 50% load
20% and 100% load
Holdup Time 6 ms Minimum Vin = 48Vdc, output at ½ Full Load, output can
droop down to -40Vdc
Ride Through 6 ms
Input Capacitance 25
F
Main Outpu
t
Parameter Min Typ
Max
Units
Notes
Maximum Output Power 2500 W At voltages > 54Vdc
Output Voltage Setpoint 54 Vdc Output floats with respect to frame ground.
Voltage Regulation
Set Point at 50% FL
Set Point Tolerance
Set Point Regulation
Droop Regulation
Droop Accuracy
-0.5
-1
-5
54
1
0.5
1
5
Vdc
%
%
Vdc
%
Resets to factory setting if power is removed
All conditions (temp, line, drift)
Linear from 1 to 46.3A.
All conditions (temp, line, drift)
Output Voltage Range 44 58 Vdc Set either by hardware or software. (See margin)
Output Current 0.1 46.3 A At 54Vdc. Below 0.1A the module meets its regulation
requirements.
Reverse (sink) output current 0.5 A Isolation function provided
Active Current Share -5 5 %FL
Single-wire connection. Loads > 25%FL
Passive Current Share -15 +15 %FL
Between modules without the single wire connection.
Loads > 25%FL
Output Ripple (5 to 20MHz)
RMS
Peak-to-Peak
250
500
mVrms
mVpk-pk
Measured with 20MHz bandwidth under any condition of
loading. Minimum load is 1A.
External Bulk Load Capacitance 0 5,000
F External capacitance can be increased but the power
supply will not meet its turn-ON rise time requirement.
GE Energy Data Sheet
CP2500DC54-PE series dc-dc converter
Input: -40Vdc to -72Vdc; Outputs: ±54Vdc @ 2500W; 5Vdc @ 4W
September 17, 2012 ©2012 General Electric Company. All rights reserved. Page 3
Electrical Specifications (continued)
Output (continued)
Parameter Min Typ Max
Units
Notes
Turn-On
Delay
Rise Time2
Overshoot
5
500
5
s
ms
%
Monotonic Turn_On after detection of valid DC input voltage.
Measured from 30% to 100% of Vnom.
Restart Shutdown Delay
20 S Shutdown is delayed during a re-start in order to guarantee restart
of multiple paralleled modules.
Load Step Response
I
V
Response Time
2.0
2
50
%FL
Vdc
ms
I/t slew rate 1A/µs.
Settling time to within regulation requirements.
Overload3
Current Limit
Shutdown
102
125
39
%FL
Vdc
Fold-down.
Default state – hiccup mode
System Start-up A 20 second shutdown delay is implemented to allow modules to be plugged in one at a time. During this time
fold-down occurs but the module will not shut down below 39Vdc.
Over-voltage
Delayed
Instantaneous
Latchoff
60
65
Vdc
Vdc
200msec delayed shutdown implemented.
Latched shutdown without hiccup.
Three restart attempts are implemented within a one minute window prior to a latched shutdown when Vout
< 65Vdc. Beyond 1 minute the counter restarts
Over-temperature
Warning
Shutdown
Auto-recoverable
5
20
°C
°C
Implemented prior to commencement of an OT shutdown
Below the maximum rating of the device being protected
Temperature hysteresis of approximately 10°C provided between shutdown and restart.
Auxiliary Output
Parameter Min Typ
Max
Units
Notes
ON when the input voltage is -26 -72 Vdc
Output Voltage Setpoint 5.2 Vdc Isolated from the main output to meet POE requirements.
50mA dedicated for powering adjacent PEMs during a fault.
700mA available for external use.
Output Current 0.005 0.75 A
Overall Regulation -5 +5 %
Ripple and Noise 50 100
25
mVpk-pk
mVrms
20MHz bandwidth. Measured across a 1F tantalum and a
0.1F ceramic capacitor
Over-voltage Clamp 7 Vdc
Over-current Limit 110 175 %FL
2 Below -5C the rise time is approximately 5 minutes to protect bulk capacitors in the unit
3 Hiccup performance attempts automatic recovery from an overload shutdown with approximately a 90% off-time duty cycle. The duty cycle varies
periodically in order to guarantee multi-module recovery synchronization. Latchoff can be chosen via software instead of the default hiccup.
Recovery from a latchoff requires ENABLING, or software commanding OFF followed by an ON after a 2 second delay.
GE Energy Data Sheet
CP2500DC54-PE series dc-dc converter
Input: -40Vdc to -72Vdc; Outputs: ±54Vdc @ 2500W; 5Vdc @ 4W
September 17, 2012 ©2012 General Electric Company. All rights reserved. Page 4
Mechanical, Environmental and EMC Specifications
Dimensions (nominal)
Length (in./mm) 13.85 / 351.8
Width (in./mm) 4.00 / 101.6
Height (in./mm) 1.66 / 42.2
Weight (lb/kg) 4.6 / 2.1
Environmental
Parameter Min Typ Max
Units
Notes
Ambient Temperature
Operating
Ambient Derating
Power Derating2
-54
1
45
1
°C
°C
%/°C
Air inlet from sea level to 5,000 feet.
Per 1,000 feet above 5,000 feet.
Up to 55°C
Storage Temperature -40 85 °C
Humidity 5 95 % Relative humidity, non-condensing
Shock and Vibration
Operational Test
Test Levels
Drop and Tip Over
IEC 68-2
IEC 721-3-2
IEC 68-2-31
Earthquake Rating 4 Zone Per Telcordia GR-63-CORE, all floors, when installed in CP Shelf.
EMC, Performance
Parameter Min Typ Max
Units
Notes
Radiated Emissions5 FCC and CISPR22 (EN55022) - Class A3
Conducted Emissions - dc Telcordia GR-1089-CORE and CISPR22 (EN55022) - Class A
ESD Error free per EN/IEC 61000-4-2 Level 4 (8 kV contact discharge, 15 kV air discharge).
Radiated Immunity Error free per EN/IEC 61000-4-3 Level 3 (10 V/m).
Differential mode surge 100 Vdc ANSI T1.315, No errors
Differential mode surge transient 1000 Vdc
No errors. IEEE C62.41 defined pulse transient
Common mode surge
(1.2/50s pulse) 1000 Vdc
Conducted Immunity Error free per EN/IEC 61000-4-6 Level 3 (10Vrms).
Reliability (calculated) 400,000 Hours
At ambient of 25°C at full load per Telcordia SR-332, Reliability
Prediction for Electronic Equipment, Method I Case III.
Isolation
Input-Chassis/Signals
Input-Output/Signals
Output-Chassis/Signals
Main-Aux Outputs
1700
2250
2250
2250
Vdc
Per EN60950.
Per IEEE802.3af.
Service Life 10 Years 25°C ambient, full load excluding fans.
Acoustic Noise 55 dBA Noise is proportional to fan speed, load and ambient temperature.
4 Designed to start at an ambient as low as -40°C, but may not meet operational limits until above -5°C.
5 Radiated emissions compliance was met using a Lineage Power shelf. This shelf includes output common and differential mode capacitors that assist in
meeting compliance.
GE Energy Data Sheet
CP2500DC54-PE series dc-dc converter
Input: -40Vdc to -72Vdc; Outputs: ±54Vdc @ 2500W; 5Vdc @ 4W
September 17, 2012 ©2012 General Electric Company. All rights reserved. Page 5
Status and Control
The PEM provides two means for monitor/control: analog or I2C.
Details of analog controls are provided in this data sheet under
Signal Definitions. GE Energy will provide separate application
notes on the I2C protocol for users to interface to the CPL PEMs.
Contact your local GE Energy representative for details.
Hot Plug
When rapidly extracting and reinserting modules care should be
taken to allow for discharging the internal bias supply so that a
predictable restart could be achieved. The way to ensure that the
circuit sufficiently discharges is to observe the spinning of the fans
after an extraction. The unit should not be reinserted until the fans
stop spinning.
Without bleeding down internal bias the module may remember
its last assigned address and may not configure itself properly if
reinserted into another slot.
Signal Definitions
All signals are referenced to Logic_GRD unless otherwise noted.
See the Signal Definitions Table at the end of this document for
further description of all the signals.
Input Signals
Margining: Set point of the PEM can be changed via this input pin.
Programming can be either a voltage source or a resistance
divider. The margining pin is connected to 3.3Vdc via a 10k
resistor inside the PEM. See graphs below.
Output
Setpoint
(Vdc)
-58
-46
0.1
3.3Vdc
10k
Vcontrol
Vprogram
-44
0
An open circuit on this pin reverts the voltage level back to the
original setting.
Software commanded margining overrides the hardware set
point indefinitely or until the default setting is reinstated for
example if input power and bias power have been removed from
the module.
Module Present Signal: This signal has dual functionality. It can
be used to alert the system when a module is inserted. A 500
resistor is present in series between this signal and Logic_GRD. An
external pull-up should not raise the voltage on the pin above
0.25Vdc. Above 1Vdc, the write_protect feature of the EEPROM is
enabled.
Protocol Select: Establishes the communications mode of the
power supply, between analog/I2C and RS485 modes. For RS485,
connect 10k pull-down resistor to 54_OUT(-DC).
Enable: On/Off control when I2C communications are utilized as
configured by the Protocol pin. This pin must be pulled low to turn
ON the power supply. The power supply will turn OFF if either the
Enable or the ON/OFF pin is released. This signal is referenced to
Logic_GRD.
ON/OFF: This is a short pin utilized for hot-plug applications to
ensure that the power supply turns OFF before the power pins are
disengaged. It also ensures that the power supply turns ON only
after the power pins have been engaged. Must be connected to
V_OUT (-DC).
Output Signals
Power_OK: This signal is HI when the main output is present and
goes LO when the main output is not present.
I_limit: This signal is HI when the main output is not in current
limit and goes LO when current limit has activated.
Alert #: I2C interrupt signal.
Fault: This signal goes LO for any failure that requires PEM
replacement. Some of these faults may be due to:
Fan failure
Over-temperature condition
Over-temperature shutdown
Over-voltage shutdown
Internal PEM Fault
GE Energy Data Sheet
CP2500DC54-PE series dc-dc converter
Input: -40Vdc to -72Vdc; Outputs: ±54Vdc @ 2500W; 5Vdc @ 4W
September 17, 2012 ©2012 General Electric Company. All rights reserved. Page 6
Alarm Table
Power Supply LED State
Monitoring Signals
(Referenced to Logic_GRD)
Condition
IN OK
Green
DC OK
Green
Service
Amber
Fault
Red Fault OTW
Power
OK
I_Limit
Module
Present
OK 1 1 0 0 HI HI HI HI LO
Thermal Alarm
(5C before shutdown) 1 1 1 0
HI LO HI HI LO
Thermal Shutdown 1 0 1 1 LO LO LO HI LO
Defective Fan 1 0 0 1 LO HI LO HI LO
Blown Input Fuse in Unit 1 0 0 1 LO HI LO HI LO
No Input > 8mS (single unit) 0 1 0 0 HI HI LO2 HI LO
Input Present but not within limits 0 0 0 0 HI HI LO HI LO
Input not present (with back bias) 0 0 0 0 HI HI LO HI LO
Over Voltage Latched Shutdown 1 0 0 1 LO HI LO HI LO
Over Current 1 Blinks 0 0 HI HI LO LO LO
Over Current Shutdown 1 0 0 0 HI HI LO LO LO
Non-catastrophic Internal Failure1 1 1 0 1 LO HI HI HI LO
1 Missing Module (external pull-up) HI
Standby (remote) 1 0 0 0 HI HI LO HI LO
Service Request (i2C mode) 1 1 Blinks 0 HI HI HI HI LO
1 Any detectable fault condition that does not result in the power supply shutting down. For example, ORing FET failure, boost section out of
regulation, etc.
2 Signal transition from HI to LO is output load dependent
Output Connector
Mating Connector: AMP 1450572-1
P1
A
6P7
A
1
Signal Output Power Input Power
6 5 4 3 2 1 P7 P6 P5 P4 P3 P2 P1
A SCL_0 MOD_PRES Ilimit LOGIC_GRD RS 485+ UNIT_ADDR
V_OUT
(-DC)
V_OUT
(+DC)
CO_RTN
Vin ( + )
EARTH
(GND)
CO_LINE
Vin ( - )
B SCL_1 OTW Alert#_0 Alert#_1 RS 485- 8V_INT
C SDA_0 Margin Enable Reset Ishare N/C
D SDA_1 Fault 5VA Power_OK ON/OFF SHELF_ADDR
Connector is viewed from the rear positioned inside the power supply.
Signal pins columns 1 and 2 are referenced to V_OUT (-DC). Signal pins columns 3 through 6 are referenced to Logic GRD.
Last-to-make first-to-break pins.
First-to-make last-to-break longest pin implemented in the mating connector.
N/C – no connect pins must be left open. Do not connect these pins to either voltage sources or ground.
GE Energy Data Sheet
CP2500DC54-PE series dc-dc converter
Input: -40Vdc to -72Vdc; Outputs: ±54Vdc @ 2500W; 5Vdc @ 4W
September 17, 2012 ©2012 General Electric Company. All rights reserved. Page 7
Signal Definitions
All hardware alarm signals (Fault, Power_OK, I_Limit, OTW) are open drain FETs. These signals should be pulled HI to either 3.3V or 5V. Maximum sink
current 5mA. An active LO signal (< 0.4Vdc) state is referenced to Logic GRD unless otherwise stated. Contact your Lineage Power representative for
more details.
Function Label Type
Description
Output Enable Enable Input If shorted to LOGIC_GRD, the PEM output is enabled when using I2C mode of
operation. May also be toggled to reset a latched OFF PEM.
Output Good Power_OK Output An open drain FET; normally HI, indicating output power is present. Changes to LO
when the main output is OFF,
Current Limit I_Limit Output An open drain FET; normally HI, indicating normal operation. Changes to LO when
in current limit,
I2C Interrupt Alert#_0
Alert#_1
Output Interrupt signal via I2C lines indicating that service is requested from the host
controller. This signal pin is pulled up to 3.3V via a 10k resistor and switches to
active LO when an interrupt occurs.
PEM Fault Fault Output Indicates that an internal fault exists. An open drain FET; normally HI, changes to
LO.
Module Present MOD_PRES Output Used to Indicate presence of PEM.
ON/OFF ON/OFF Input Short pin, connects last and breaks first; used to activate and deactivate output
during hot-insertion and extraction, respectively. Ref: V_OUT (-DC)
Margining Margin Input Allows changing of output voltage through an analog voltage input or via resistor
divider.
Over-Temperature Warning OTW Output An open drain FET; normally HI, changes to LO approximately 5°C prior to thermal
shutdown.
PEM address Unit_addr Input Voltage level addressing of PEMs within a single shelf. Ref: V_OUT (-DC).
Shelf Address Shelf_addr Input Voltage level addressing of PEMs within multiple shelves. Ref: V_OUT (-DC).
Back bias 8V_INT _ Diode OR’ed 8Vdc drain; used to back bias microprocessors and DSP of failed PEM
from operating PEMs. Ref: V_OUT (-DC).
Mux Reset Reset Input Resets the I2C lines to I2C line 0.
Standby power 5VA Output 5V at 0.75A provided for external use by either adjacent power supplies or the
using system.
Current Share Ishare - A single wire interface between each of the power unit forces them to share the
load current. Ref: V_OUT (-DC).
I2C Line 0 SCL_0, SDA_0 Input I2C line 0.
I2C Line 1 SCL_1, SDA_1 Input I2C line 1.
GE Energy Data Sheet
CP2500DC54-PE series dc-dc converter
Input: -40Vdc to -72Vdc; Outputs: ±54Vdc @ 2500W; 5Vdc @ 4W
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 17, 2012 ©2012 General Electric Company. All rights reserved. Page 8
Front Panel LEDs
Analog Mode I2C Mode
ON: Input ok
OFF: Input out of limits
ON: Output ok
Blinking: Overload
Over-temperature Warning ON: Over-temperature Warning
Blinking: Service
!
Dimensions
Top
V
iew Front
V
iew
Rear
V
iew
13.85 in.
(351.2 mm)
4.00 in.
(101.6 m m) 1.63 in.
( 41 .4 mm)
Ordering Information
Item Description Comcode
CP2500DC54-PEZ Designed and factory tested to IEEE802.3af POE compliance,
Auxiliary Output: 5Vdc at 0.75A. RoHS 6 compliant CC109170528
Consult the 1U shelf data sheet for potential shelf configurations for this module from GE Energy.
ON: Fault
