GE
CP2000DC54-PE Compact Power Line DC/DC Converter
Input: -40 to -72Vdc; Outputs: ±54 Vdc @ 2000W; 5 Vdc @ 4W
Data Sheet
Features
Compact 1-RU form factor providing 22 W/in3
Input Current < 60A at 40 Vdc input
Programmable output voltage from 44V to 58 Vdc,
Output defaulted to 54V
RS485
1
and PMBus compliant dual I
2
C serial bus communications
Designed to IEEE802.3af Compliance, 2250 output*** isolation to
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 CP2000DC54-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. The high-density, front-
to-back airflow PEM is designed for minimal space utilization and is highly expandable for future growth. It is provided
with many features including PoE isolation, and dual-redundant I
2
C communications busses that allow it to be used in
a broad range of applications. These signals and the 5V auxiliary supply are isolated from the main output and frame
ground. The flexible feature set makes this Power Entry Module an excellent choice for applications requiring modular
dc-to-dc bulk intermediate voltages, such as in distributed power.
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 isolated
redundant +5V Aux power, isolated signals and I
2
C communications
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 5 compliant
POE compliant to IEEE802.3af
*
†
‡
§
**
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
August 20, 2013
©2013 General Electric Company. All rights reserved.
Page 1
GE
CP2000DC54-PE series dc-dc converter
Input: -40Vdc to -72Vdc; Outputs: ±54Vdc @ 2000W; 5Vdc @ 4W
Data Sheet
Electrical Specifications
Input
Parameter
Operating Voltage
Low Input Shutdown of Main
output
Input Turn-ON of both Outputs
Reverse Input Voltage
Idling Power
Input Current
Cold Start Inrush Current
Efficiency
Holdup Time
Ride Through
Input Capacitance
88
82
8
8
25
90
84
Output OFF
Output ON
Min
-40
-38.5
-43
Typ
-39
-43.5
Max
-72
-39.5
-44
35
60
60
60
Units
Vdc
Vdc
Vdc
5Vdc output at no-load
Both outputs at no-load
At input voltages > 40Vdc
Notes
The module shall not be damaged
W
Adc
Adc
%
ms
ms
F
Measured at 25C for all line conditions. Does not include X-
capacitor charging spike
From 75% to 100% of full load
For loads > 25% of full load
Minimum Vin = 48Vdc, output at ½ Full Load, output can
droop down to -40Vdc
Main Output
Parameter
Maximum Output Power
Output Voltage Setpoint
Voltage Regulation
Set Point at 50% FL
Set Point Tolerance
Set Point Regulation
Droop Regulation
Droop Accuracy
Output Voltage Range
Output Current
Reverse (sink) output current
Active Current Share
Passive Current Share
Output Ripple (5 to 20MHz)
RMS
Peak-to-Peak
External Bulk Load Capacitance
0
-5
-15
54
54
-0.5
-1
-5
44
0.1
1
0.5
1
5
58
37
0.5
5
+15
Min
Typ
Max
2000
Units
W
Vdc
Vdc
%
%
Vdc
%
Vdc
A
A
%FL
%FL
At voltages > 54Vdc
Notes
Output floats with respect to frame ground.
Resets to factory setting if power is removed
All conditions (temp, line, drift)
Linear from 1 to 39 A.
All conditions (temp, line, drift)
Set either by I
2
C, or analog margining.
At 54Vdc. Below 0.1A the module meets its regulation
requirements.
Isolation function provided
Single-wire connection. Loads > 25%FL
Between modules without the single wire connection.
Loads > 25%FL
Measured with 20MHz bandwidth under any condition of
loading. Minimum load is 1A.
External capacitance can be increased but the power
supply will not meet its turn-ON rise time requirement.
250
500
5,000
mVrms
mVpk-pk
F
August 20, 2013
©2013 General Electric Company. All rights reserved.
Page 2
GE
CP2000DC54-PE series dc-dc converter
Input: -40Vdc to -72Vdc; Outputs: ±54Vdc @ 2000W; 5Vdc @ 4W
Electrical Specifications (continued)
Output (continued)
Parameter
Turn-On
Delay
Rise Time
2
Overshoot
Restart Shutdown Delay
Load Step Response
I
V
Response Time
Overload
3
Current Limit
Shutdown
System Start-up
Over-voltage
38.9
43
39
Adc
Vdc
Fold-down.
Default state – hiccup mode
50
2.0
2
%FL
Vdc
ms
5
500
5
20
s
ms
%
S
Data Sheet
Min
Typ
Max
Units
Notes
Monotonic Turn_On after detection of valid DC input voltage.
Measured from 30% to 100% of Vnom.
Shutdown is delayed during a re-start in order to guarantee restart
of multiple paralleled modules.
I/t
slew rate 1A/µs.
Settling time to within regulation requirements.
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.
60
65
Vdc
Vdc
200msec delayed shutdown implemented.
Latched shutdown without hiccup.
Delayed
Instantaneous
Latchoff
Three restart attempts are implemented within a one minute window prior to a latched shutdown when Vout
< 65Vdc. Beyond 1 minute the counter restarts
5
20
°C
°C
Implemented prior to commencement of an OT shutdown
Below the maximum rating of the device being protected
Over-temperature
Warning
Shutdown
Auto-recoverable
Temperature hysteresis of approximately 10°C provided between shutdown and restart.
Auxiliary Output
Parameter
ON when the input voltage is
Output Voltage Setpoint
Output Current
Overall Regulation
Ripple and Noise
Over-voltage Clamp
Over-current Limit
Isolation from the main output
Isolation from frame ground
110
2250
50
0.005
-5
50
Min
-26
Typ
5.2
Max
-72
0.75
+5
100
25
7
175
Units
Vdc
Vdc
A
%
mVpk-pk
mVrms
Vdc
%FL
Vdc
Vdc
Notes
Isolated from the main output to meet POE requirements.
50mA dedicated for powering adjacent PEMs during a fault.
700mA available for external use.
20MHz bandwidth. Measured across a 1F tantalum and a
0.1F ceramic capacitor
A 1MΩ noise suppression resistor is connected between
Logic_GRD and Frame_GRD.
2
3
Below -5C the rise time is approximately 5 minutes to protect bulk capacitors in the unit
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.
August 20, 2013
©2013 General Electric Company. All rights reserved.
Page 3
GE
CP2000DC54-PE series dc-dc converter
Input: -40Vdc to -72Vdc; Outputs: ±54Vdc @ 2000W; 5Vdc @ 4W
Mechanical, Environmental and EMC Specifications
Dimensions (nominal)
Length (in./mm)
Width (in./mm)
Height (in./mm)
Weight (lb/kg)
13.85 / 351.8
4.00 / 101.6
1.66 / 42.2
4.6 / 2.1
Data Sheet
Environmental
Parameter
Ambient Temperature
Operating
Ambient Derating
Power Derating
2
Storage Temperature
Humidity
Shock and Vibration
Operational Test
Test Levels
Drop and Tip Over
Earthquake Rating
4
Zone
Min
-5
4
Typ
1
Max
45
1
Units
°C
°C
%/°C
°C
%
Notes
Air inlet from sea level to 5,000 feet.
Per 1,000 feet above 5,000 feet.
Up to 55°C
Relative humidity, non-condensing
IEC 68-2
IEC 721-3-2
IEC 68-2-31
Per Telcordia GR-63-CORE, all floors, when installed in CP Shelf.
-40
5
85
95
EMC, Performance
Parameter
Radiated Emissions
ESD
Radiated Immunity
Differential mode surge
Differential mode surge transient
Common mode surge
(1.2/50s pulse)
Conducted Immunity
Reliability (calculated)
Isolation
Input-Chassis/Signals
Input-Output/Signals
Output-Chassis/Signals
Main-Aux Outputs
Service Life
Acoustic Noise
1700
2250
2250
2250
10
55
5
Min
Typ
Max
3
Units
Notes
FCC and CISPR22 (EN55022) - Class A
Conducted Emissions - dc
Telcordia GR-1089-CORE and CISPR22 (EN55022) - Class A
Error free per EN/IEC 61000-4-2 Level 4 (8 kV contact discharge, 15 kV air discharge).
Error free per EN/IEC 61000-4-3 Level 3 (10 V/m).
100
1000
1000
Vdc
Vdc
Vdc
No errors. IEEE C62.41 defined pulse transient
ANSI T1.315, No errors
Error free per EN/IEC 61000-4-6 Level 3 (10Vrms).
400,000
Hours
At ambient of 25°C at full load per Telcordia SR-332, Reliability
Prediction for Electronic Equipment, Method I Case III.
Per EN60950.
Per IEEE802.3af.
Years
dBA
25°C ambient, full load excluding fans.
Noise is proportional to fan speed, load and ambient temperature.
Vdc
4
5
Designed to start at an ambient as low as -40°C, but may not meet operational limits until above -5°C.
Radiated emissions compliance was met using a Lineage Power shelf. This shelf includes output common and differential mode capacitors that
assist in meeting compliance.
August 20, 2013
©2013 General Electric Company. All rights reserved.
Page 4
GE
CP2000DC54-PE series dc-dc converter
Input: -40Vdc to -72Vdc; Outputs: ±54Vdc @ 2000W; 5Vdc @ 4W
Status and Control
The PEM provides two means for monitor/control: analog or I
2
C.
Details of analog controls are provided in this data sheet under
Signal Definitions. GE Energy will provide separate application
notes on the I
2
C protocol for users to interface to the CPL PEMs.
Contact your local GE Energy representative for details.
Data Sheet
Module Present Signal:
This signal has dual functionality. It can
be used to alert the system when a module is inserted. A 500Ω
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/I
2
C and RS485 modes. For RS485,
connect 10kΩ pull-down resistor to 54_OUT(-DC).
Enable:
On/Off control when I
2
C 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).
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.
Control 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.
Status 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 #:
I
2
C 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
Control 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 10kΩ
resistor inside the PEM. See graphs below.
-58
3.3Vdc
Output Setpoint (Vdc)
-46
-44
Vcontrol
Vprogram
0 0.1
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.
August 20, 2013
©2013 General Electric Company. All rights reserved.
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