CAR2512TE Front-End

GE
Data Sheet
CAR2512TE Front-End
Input: 90VAC to 264VAC; Output: 12VDC@ 2500W; 3.3/5VDC standby @ 15W
Features
Applications

Efficiency exceeds Platinum standards

Universal input with PFC

Constant power characteristic

2 front panel LEDs: 1-input;2-[DC_OK, fault, warning]

Remote ON/OFF control of the 12Vdc output

Remote sense on the 12Vdc output

No minimum load requirements

Active load sharing (single wire)

Hot Plug-ability

Standby orderable either as 3.3Vdc or 5Vdc

12Vdc distributed power architectures


Auto recoverable OC & OT protection
Datacom and Telecom applications

Operating temperature: -10 - 70C (de-rated above 50C)

Mid to high-end Servers

Digital status & control: I2C and PMBus serial bus

Routers/Switches

EN/IEC/UL60950-1 2nd edition; UL, CSA, VDE , and CCC

Broadband Switches

EMI: class A FCC docket 20780 part 15, EN55022

ATE Equipment

Meets EN61000 immunity and transient standards

Shock & vibration: Meets IPC 9592 Class II standards
Description
The CAR2512TE Front-End provides highly efficient isolated power from worldwide input mains in a compact 1U
industry standard form factor in an unprecedented power density of 25W/in3. Ideal for applications where mid to light
load efficiency is of key importance. This front-end is complemented by the CAR2512DC dc/dc converter designed to
convert 48/60Vdc power of telecom central offices. This plug and play approach offers rapid system reconfiguration
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 SMBAlert 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 5, 2014
©2013 General Electric Company. All rights reserved.
GE
Data Sheet
CAR2512TE Front-End
Input: 90VAC to 264VAC; Output: 12 VDC @ 2500W; 3.3/5VDC standby @ 15W
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
Storage Temperature
I/O Isolation voltage to Frame (100% factory Hi-Pot tested)
85
°C
2121
VDC
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, load, and temperature conditions.
INPUT
Parameter
Symbol
Min
Typ
Max
Unit
90
115/230
264
VAC
Frequency Range (ETSI 300-132-1 recommendation)
VIN
FIN
47
50/60
63
Hz
Main Output Turn_OFF
VIN
80
VAC
IIN
14
16
AAC
IIN
40
APEAK
Operational Range
Maximum Input Current (VOUT= VO, set, IOUT=IO, max) VIN= 100VAC
VIN= 180VAC
Cold Start Inrush Current
(Excluding x-caps, 25C, <10ms, per ETSI 300-132)
Efficiency (TAMB=25C, VIN = HL, VO = 12VDC),
100% load
50% load
20% load
Power Factor (VIN=230VAC, IOUT=IO, max)
Holdup time2 (VOUT= 12VDC, Tamb 25C, IOUT=IO, max) Vin= 230VAC
Vin= 100VAC
Early warning prior to output falling below 10.8Vdc (DC_OK signal
goes LO)
Ride through
Leakage Current
(VIN= 250VAC, Fin = 60Hz)
115V
89
89
80

PF
/
/
/
/
230V
91
94
90
%
0.99
12
15
T
ms
2
ms
T
10
ms
IIN
3
mA
Isolation Input/Output
3000
VAC
Input/Frame
1500
VAC
Output/Frame
100
VDC
12Vdc MAIN OUTPUT
Parameter
Output Power
HL / LL [180 – 264 / 90-132 VAC] VDC ≥ 12VDC
VDC = 10.8VDC
Set point
Overall regulation (load, temperature, aging)
Ripple and noise3
Symbol
W
VOUT
Min
Typ
Unit
0
-
2500/1200
W
0
11.9
-3
12.00
2246/1078
12.1
+3
W
VDC
%
120
mVP-P
Turn-ON overshoot
Turn-ON delay
Max
T
2
+3
%
3
sec
Derated above 50C at 2.5%/C
12V output can decay down to 10.8V
3 Measured across a 10µf tantalum and a 0.1µf ceramic capacitors in parallel. 20MHz bandwidth
1
2
September 5, 2014
©2013 General Electric Company. All rights reserved.
Page 2
GE
Data Sheet
CAR2512TE Front-End
Input: 90VAC to 264VAC; Output: 12 VDC @ 2500W; 3.3/5VDC standby @ 15W
12Vdc MAIN OUTPUT (continued)
Parameter
Symbol
Min
Max
Unit
Remote ON/OFF delay time
40
ms
Turn-ON rise time (10 – 90% of VOUT)
50
ms
-5
+5
%VOUT
10.8
13.2
VDC
15.8
VDC
0
208
100
ADC
105/105
130/140
% of FL
-5
+5
% of FL
Transient response 50% step [10%-60%, 50% - 100%]
(dI/dt – 1A/µs, recovery 300µs)
VOUT
Programmable range (hardware & software)
Overvoltage protection, latched
(recovery by cycling OFF/ON via hardware or software)
Output current VIN = HL
VIN = LL
Typ
13.8
IOUT
Current limit, Hiccup (programmable level) HL / LL
Active current share (IOUT ≥ 20% of FL)
14.8
STANDBY OUTPUT
Parameter
Symbol
Min
Max
3.3 / 5 / 12
Typ
Set point
3.3 / 5.0 / 12
Factory set point accuracy (25C, 50% load)
Overall regulation (line, load, temperature, aging)
Ripple and noise
Output power
Overload protection Overvoltage protection
Isolation
Output/Frame
VDC
-3
VOUT
IOUT
Unit
+3
%
-5
+5
%
0
50 / 50 / 120
15
mVP-P
WDC
110
%
VDC
100
General Specifications
Parameter
Min
Reliability
Service Life
Typ
Max
Units
Notes
400,000
Hrs
Full load, 25C ; MTBF per SR232 Reliability
protection for electronic equipment, method I,
case III,
10
Yrs
Full load, excluding fans
Weight
5.2 /2.36
Lbs/kg
Feature Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See
Feature Descriptions for additional information.
Parameter
Symbol
Min
Typ
Max
Unit
5
VDC


1
0.8
mA
VDC
Remote ON/OFF (pulled up internally within the module to Vstdby)
Logic High (Module ON)
2.5
Logic Low (Module OFF, internal resistance 9kΩ)
September 5, 2014
IIL
VIL

0
©2013 General Electric Company. All rights reserved.
Page 3
GE
Data Sheet
CAR2512TE Front-End
Input: 90VAC to 264VAC; Output: 12 VDC @ 2500W; 3.3/5VDC standby @ 15W
Feature Specifications (continued)
Parameter
Symbol
Min
Typ
Max
Unit
Vprog range
Programmed output voltage range
Voltage adjustment resolution (8-bit A/D)
VPROG
VOUT
VOUT
0
10.8


10
2.5
13.2
VDC
VDC
mVDC
Output configured to 13.2VDC
VPROG
2.5
Output configured to the 12VDC set-point
VPROG
3.0
12V output OFF
VI
2.5
12V output ON
VI
0

20
µA
VOH
2.1

3.5
VDC
IOL
VOL

0


20
0.4
mA
VDC

20
µA
VOH
2.1

3.5
VDC
Logic Low (Output voltage is not present; VOUT ≤ 10.2VDC, and
IOL


20
mA
Early_warning if output is about to go out of regulation)
VOL
0

0.4
VDC

20
µA
Output Voltage programming (Vprog)
Equation: Vout = 10.8 + (Vprog * 0.96)


3.0
VDC

VDC

5
VDC

0.8
VDC

Interlock [short pin controlling presence of the 12VDC output]
INPUT(AC)_OK (pulled up internally via 10kΩ to 3.3V)
Logic High (Input within normal range; VIN ≥ 80VAC)
Logic Low (Input out of range; VIN ≤ 75VAC)
IOH
DC_OK (pulled up internally via 10kΩ to 3.3V)
Logic High (Output voltage is present; VOUT ≥ 10.7VDC)
IOH
Over_Temperature_Warning# (pulled internally via 10kΩ to 3.3V)
Logic High (temperature within normal range)
Logic Low (temperature is too high)
Delayed shutdown after Logic Low transition
IOH
VOH
2.1

3.5
VDC
IOL


20
mA
VOL
0

0.4
Tdelay
10
VDC
sec
Fault# (pulled up internally via 10kΩ to 3.3V)
Logic High (No fault is present)

20
µA
VOH
2.1

3.5
VDC
IOL
VOL

0


20
0.4
mA
VDC
VIL
0

0.4
VDC
IOH
Logic Low (Fault is present)
PS_Present#
Logic High (Power supply is not plugged in)
Logic Low (Power supply is present)
September 5, 2014
©2013 General Electric Company. All rights reserved.
Page 4
GE
Data Sheet
CAR2512TE Front-End
Input: 90VAC to 264VAC; Output: 12 VDC @ 2500W; 3.3/5VDC standby @ 15W
Feature Specifications (continued)
Parameter
SMBAlert# (Interrupt) (pulled up internally via 10kΩ to 3.3V)
i t )
Logic High (No Alert - normal)
Logic Low (Alert is set)
Symbol
Min
Typ
Max
Unit
VOH
IOL
VOL
2.1



3.5
20
0.4
VDC
mA
VDC
IOUT
0
208
ADC
-5
+5
% of FL
0
3.3
VDC
5
mADC

0
Current monitor (Imon) Resolution
15
Measurement range
Measurement accuracy, load > 25% of FL, VO = 12VDC
Analog output range
Vmon
Sourced output current
IOUT
mV/A
Digital Interface Specifications
Parameter
Conditions
Symbol
Min
Input Logic High Voltage (CLK, DATA)
VIH
Input Logic Low Voltage (CLK, DATA)
VIL
Input high sourced current (CLK, DATA)
IIH
Typ
Max
Unit
2.1
3.6
V
0
0.8
V
0
10
μA
0.4
V
PMBus Signal Interface Characteristics
Output Low sink Voltage (CLK, DATA, SMBALERT#)
IOUT=3.5mA
Output Low sink current (CLK, DATA, SMBALERT#)
Output High open drain leakage current (CLK,DATA,
SMBALERT#)
PMBus Operating frequency range
VOL
IOL
3.5
mA
VOUT=3.6V
IOH
0
10
μA
Slave Mode
FPMB
10
400
kHz
Type
Symbol
Min
Max
Unit
Digital Interface Specifications (continued)
Parameter
Typ
Measurement System Characteristics
Clock stretching
IOUT measurement range
tSTRETCH
Linear
IOUT measurement accuracy 25°C
VOUT measurement range
Linear
VOUT measurement accuracy
Temp measurement range
Linear
Temp measurement accuracy4
IIN measurement range
Linear
IIN measurement accuracy
VIN measurement range
Linear
VIN measurement accuracy
PIN measurement range
Linear
PIN measurement accuracy
Fan Speed measurement range
Linear
Fan Speed measurement accuracy
Fan speed control range
4
Linear
25
ms
IRNG
0
210
A
IACC
-5
+5
%
VOUT(rng)
0
14
VDC
VOUT(acc)
-5
+5
%
Temp(rng)
0
120
C
Temp(acc)
-5
+5
%
IIN(rng)
0
40
AAC
IIN(acc)
-5
+5
%
VAC
VIN(rng)
0
300
VIN(acc)
-5
+5
%
PN(rng)
0
3000
W
PIN(acc)
-5
+5
%
0
30k
RPM
-10
10
%
0
100
%
Temperature accuracy reduces non-linearly with decreasing temperature
September 5, 2014
©2013 General Electric Company. All rights reserved.
Page 5
GE
Data Sheet
CAR2512TE Front-End
Input: 90VAC to 264VAC; Output: 12 VDC @ 2500W; 3.3/5VDC standby @ 15W
Environmental Specifications
Parameter
Min
Typ
Max
Units
5
°C
°C
Ambient Temperature
-10
70
Storage Temperature
-40
85
Operating Altitude
2250/7382
m/ft
Non-operating Altitude
8200/30k
m / ft
Power Derating with Temperature
2.5
Power Derating with Altitude
2.0
C/301 m
C/1000 ft
55
dbA
Acoustic noise
Over Temperature Protection
%/°C
125/110
Humidity
Operating
Storage
30
10
Shock and Vibration acceleration
Notes
Derated above 50C
6
Meet CCC at 5000m
50C7 to 70C(60C max where TUV/VDE is
required)
Above 2250 m/7382 ft
Full load
°C
Shutdown / restart
95
95
%
Relative humidity, non-condensing
2.4
Grms
Meet IPC-9592B Class II
EMC Compliance
Parameter
Criteria
Enclosure
immunity
Level
Test
Conducted emissions
EN55022, FCC Docket 20780 part 15, subpart J
EN61000-3-2( line harmonics)
A
0.15 – 30MHz
0 – 2 KHz
Radiated emissions**
EN55022
A
30M – 1GHz
Voltage dips
EN61000-4-11
B
-30%, 10ms
B
-60%, 100ms
AC input
AC input
immunity
Standard
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
3
ESD
6kV contact, 8kV air
5
60C max where TUV/VDE is required, The Reverse airflow product has a maximum operational ambient of 40C.
6
The Reverse airflow product has a maximum operational ambient of 40C.
7
The reverse airflow product starts derating at an operational ambient of 40C and should not be used above 50C
September 5, 2014
©2013 General Electric Company. All rights reserved.
Page 6
GE
Data Sheet
CAR2512TE Front-End
Input: 90VAC to 264VAC; Output: 12 VDC @ 2500W; 3.3/5VDC standby @ 15W
Control and Status
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) .
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 ‘VSTDBY return’ and ‘Signal return’.
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 for latch OFF
resets and the 1 minute window starts all over again.
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.
Control Signals
All signals are referenced to ‘Signal Return’.
Device addressing: The microcontroller (MCU) and the EEPROM
have the following addresses:
Device
Address
Address Bit Assignments
(Most to Least Significant)
MCU
0xBx
1 0 1 1 A2 A1 A0 R/W
Broadcast
0x00
0 0 0 0 0
0
0
0
EEPROM
0xAx
1 0 1 0 A2 A1 A0 R/W
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 internally. For logic LO connect to ‘Output Return’.
Global broadcast: This is a powerful command because it
instruct all power supplies to respond simultaneously. A read
instruction should never be accessed globally. The power
supply should issue an ‘invalid command’ state if a ‘read’ is
attempted globally.
For example, changing the ‘system’ output voltage requires the
global broadcast so that all paralleled power supplies change
their output simultaneously. This command can also turn OFF
the ‘main’ output or turn ON the ‘main’ output of all power
supplies simultaneously. Unfortunately, this command does
have a side effect. 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 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.
Voltage programming (Vprog): An analog voltage on this
signal can vary the output voltage ± 10% of nominal, from
10.8VDC to 13.2VDC. The equation of this signal is:
A successful restart shall clear all alarm registers.
VOUT = 10.8 + (Vprog * 0.96) where Vprog = 0 to 2.5VDC
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.
Between 2.5 and 3V the output stays at 13.2VDC. If Vprog is >
3V, or left open, the programming signal is ignored and the
unit output is set at the setpoint of 12VDC.
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.
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 5, 2014
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. A logic LO on this signal pin turns OFF the 12VDC
output.
Interlock: 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.
©2012 General Electric Company. All rights reserved.
Page 7
GE
Data Sheet
CAR2512TE Front-End
Input: 90VAC to 264VAC; Output: 12 VDC @ 2500W; 3.3/5VDC standby @ 15W
Remote sense: The two sense pins regulate the 12Vdc output
at the termination point external to the power supply. Up to
0.5V of total load cable voltage drop to the sense point is
tolerable.
Status Signals
Current monitor (Imon): A voltage level proportional to the
delivered output current is present on this pin. The signal level
is typically 15mV per amp.
Input_OK: A TTL compatible status signal representing
whether the input voltage is within the anticipated range. This
signal is pulled HI internally through a 10kΩ resistor.
DC_OK: A TTL compatible status signal representing whether
the output voltage is present. This signal needs is pulled HI
internally through a 10kΩ resistor.
Over_temp_warning#: A TTL compatible status signal
representing whether an over temperature exists This signal is
pulled HI internally through a 10kΩ resistor.
If an over temperature should occur, this signal would pull LO
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.
Basic Operation
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.
Fault#: A TTL compatible status signal representing whether
a Fault occurred. This signal is pulled HI internally through a
10kΩ resistor.
This signal activates for OTP, OVP, OCP, INPUT 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.
SMBAlert# (Interrupt): A TTL compatible status signal,
representing the SMBusAlert# feature of the PMBus compatible
i2C protocol in the power supply. This signal is pulled HI
internally through a 10kΩ 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.
Serial Clock (SCL): Clock pulses are host generated initiating
communications across the I²C Serial bus. 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 is a bi-directional data line. . 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.
September 5, 2014
Clock
Stretch
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.
©2013 General Electric Company. All rights reserved.
Page 8
GE
Data Sheet
CAR2512TE Front-End
Input: 90VAC to 264VAC; Output: 12 VDC @ 2500W; 3.3/5VDC standby @ 15W
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 receives a
‘clear’ instruction as outlined below. If the alarm state is still
present after the ‘clear_faults’ command has been received,
then the signal will revert back into its LO state again and will
latch until a subsequent ‘clear_faults’ signal is received from
the host controller.
The signal will be triggered for any state change, including the
following conditions;









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

1
S
8
Slave address
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
Receiving a CLEAR_FAULTS command
The main output recycled (turned OFF and then ON) via
the REMOTE ON/OFF signal pin
The main output recycled (turned OFF and then ON) by the
OPERATION command
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.
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.
September 5, 2014
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. The PEC
calculation is PMBus™ compliant including the address and
data fields. PEC is optional although its use is highly
encouraged.
8
Low data byte
The power supply will clear the SMBusAlert# signal (release the
signal to its HI state) upon the following events:


PMBusTM Commands
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.
1
S
7
Slave address
1
Sr
1
Wr
7
Slave Address
8
MSB
1
A
8
Command Code
1
A
8
LSB
1
Rd
1
A
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
Block write format:
1
S
7
Slave address
8
Byte count = N
8
……….
1
Wr
1
A
1
A
8
Data 1
1
A
8
Command Code
1
A
8
Data 48
8
Data 2
1
A
8
PEC
1
A
1
A
1
A
1
P
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
Data 1
8
Data 48
©2013 General Electric Company. All rights reserved.
8
Command Code
1
A
1
A
1
A
1
A
8
Data 2
1
A
8
PEC
1
NoAck
1
P
Page 9
GE
Data Sheet
CAR2512TE Front-End
Input: 90VAC to 264VAC; Output: 12 VDC @ 2500W; 3.3/5VDC standby @ 15W
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
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
Hex
Code
01
02
03
10
11
12
19
Data
Byte
1
1
0
1
0
0
1
W
R
W
W
Function
Output ON/OFF
Set at 1Dh output ON
Clear Status
Write control
Store permanently
Reset defaults
30h, 400kHz,
SMBAlert
Vout constants
Set Vout
Vout_mode
Vout_command
20
21
1
2
R
W
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
3B
40
41
42
43
44
45
46
47
4A
4F
50
51
55
57
58
59
78
79
7A
7B
7C
7D
7E
7F
2
2
1
2
2
2
1
2
1
2
2
1
2
2
2
2
2
1
2
1
1
1
1
1
1
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
Set fan speed in RPM
Set OV fault limit
W
W
R
R
R
R
R
R
R
R
Set UV warn limit
Set UV shutdown
Iout_OC_warn_limit
OT_fault_limit
OT_fault_response
OT_warn_limit
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
September 5, 2014
Set OV warn limit
Set UV warn limit
0
Command
Status_mfr_specific
Status_fan_1_2
Read_Vin
Read Iin
Read_Vout
Read_Iout
Read_temperature
Read_fan_speed_1
Read_fan_speed_2
Read_Pout
Read_Pin
PMBus revision
Mfr_ID
Mfr_model
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
Hex
Code
80
81
88
89
8B
8C
8D
90
91
96
97
98
99
9A
9E
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
B0
B1
Data
Field
1
1
2
2
2
2
2
2
2
2
2
1
5
16
15
2
2
2
2
2
2
2
2
2
2
48
48
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
W
W
Read_mfr_revision
Fan_duty_cycle
Fan_speed
Vprog_ext
D5
D6
D7
D8
4
1
1
2
W
W
W
Function
Read input voltage
Read input current
Read output voltage
Read output current
Read Temperature
In RPM
In RPM
FRU_ID
User memory space
User memory space
R
Duty_cycle in %
Control in rpm
Note: All output settings and read backs above support the
12Vdc main output of the power supply. There are no
adjustments or read backs of the status of the 3.3V standby
output. Failure of the 3.3V output is reported by the
STATUS_MFR_SPECIFIC register,
Latch or hiccup
Set OC warn limit
Latch or hiccup
Set OT warn limit
Status Register Bit Allocation:
Register
Code
Status_Byte
78
Set OV warn limit
Bit
7
6
5
4
3
2
1
0
©2013 General Electric Company. All rights reserved.
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
Page 10
GE
Data Sheet
CAR2512TE Front-End
Input: 90VAC to 264VAC; Output: 12 VDC @ 2500W; 3.3/5VDC standby @ 15W
Register
Status_word
(includes Status_byte)
Code
79
Status_Vout
7A
Status_Iout
7B
Status_input
Status_temperature
Status_fan_1_2
Status_mfr_specific
7C
7D
81
80
Bit
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
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
OV Fault/Warning detected
OC Fault/Warning detected
Input Fault/Warning detected
Mfr_specific register change
detected
nPower_Good
Fan Fault or Warning
detected
Other fault
Unknown
Vout OV Fault
Vout OV Warning
Vout UV Warning
Vout UV 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
Fan 1 Fault
Fan 2 Fault
N/A
N/A
Fan 1 Speed Overridden
Fan 2 Speed Overridden
N/A
N/A
3.3V_fault
OVSD
Interrupt
Fault detected
PS_remote_OFF
DC Fault
Input Fault
0 – AC high line,
1 – AC 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
September 5, 2014
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.
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.
©2013 General Electric Company. All rights reserved.
Page 11
GE
Data Sheet
CAR2512TE Front-End
Input: 90VAC to 264VAC; Output: 12 VDC @ 2500W; 3.3/5VDC standby @ 15W
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. 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
13KZ51018193xxx, is decoded as;
13 – year of manufacture, 2013
KZ – manufacturing location, in this case Matamoros
51 – week of manufacture
018193xxx – serial #, mfr choice
note: if the additional xxx space is not utilized then F’s are
filled in, (i.e. 018193FFF), ensuring that the actual serial
number is clearly identified.
Read_mfr_rev (D5): Total 4 bytes
Each byte is partitioned into high and low nibbles.
Example: FF is read as 16.16
11 is read as 1.1
Series
Hardware
Rev
Primary µC
Secondary
µC
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.
EEPROM
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 microcontroller has 96 bytes of EEPROM memory available
for the system host.
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.
Mfr_ID (99): Manufacturer in ASCII – 5 characters maximum,
Two LEDs are located on the front faceplate. The INPUT OK LED
provides INPUT signaling function. When the LED is ON GREEN
the power supply input is within normal design limits.
General Electric – Critical Power represented as,
GE-CP
Mfr_Model (9A): Total 16 bytes: CAR2512TEXXXZ01
LEDs
The second LED DC/FLT indicates three states. When the LED is
GREEN then there are no faults and the DC output is present.
When the LED is AMBER then a fault condition exists but the
power supply still provides output power. When the LED is RED
then a fault condition exists and the power supply does not
provide output power.
Mfr_serial (9E): Product serial number includes the
manufacturing date, manufacturing location in up to 15
characters. For example:
September 5, 2014
©2013 General Electric Company. All rights reserved.
Page 12
GE
Data Sheet
CAR2512TE Front-End
Input: 90VAC to 264VAC; Output: 12 VDC @ 2500W; 3.3/5VDC standby @ 15W
Alarm Table
LED Indicator
Monitoring Signals
Test Condition
LED1
AC
Tri-Color LED2
DC / FLT
FAULT
DC_OK
INPUT_OK
1
Normal Operation
Green
Green
High
High
High
High
2
Low or NO INPUT
Off
Red
Low
Low
Low
High
3
OVP
Green
Red
Low
Low
High
High
4
Over Current
Green
Red
Low
Low
High
High
5
Temp Alarm Warning
Green
Orange
High
High
High
Low
6
Fault Over Temp
Green
Red
Low
Low
High
Low
7
Remote ON/OFF
Green
OFF
High
Low
High
High
TEMP_OK
Notes: Test condition #2 had 2 modules plug in. One module is running and the other one is with no AC.
Outline Drawing
15.817 ±.020
COVER
0.330
15.375 ±.020
CHASSIS
airflow
September 5, 2014
©2013 General Electric Company. All rights reserved.
Page 13
GE
Data Sheet
CAR2512TE Front-End
Input: 90VAC to 264VAC; Output: 12 VDC @ 2500W; 3.3/5VDC standby @ 15W
Connector Pin Assignments
Input Connector:
Standard airflow: IEC320, C20; mating connector: IEC320, C19 type
Reverse airflow:
Output Connector:
Pin
8
IEC320, C22; mating connector: IEC320, C21 type
Tyco P/N 6600122-7 or equivalent
Mating connector right angle mate: Primary Source:
Secondary Source:
FCI berg P/N 51915-176LF
Tyco P/N 6450171-5
Mating connector vertical mate:
FCI berg P/N 51940-290
Function
Pin
Function
Pin
Function
Pin
A1
VSTDBY
A2
PS Present
A3
B1
Fault
C1
IShare
D1
VProg
B2
Current Monitor (Imon)
C2
VSTDBY
D2
OVP Test Point8
VSTDBY Return
B3
Interlock
C3
Over_Temp_Warning
D3
Remote ON/OFF
A4
n/c
B4
VSTDBY Return
C4
I C Address (A0)
D4
DC_OK
A5
Remote Sense (+)
B5
SDA (I2C bus)
C5
I2C Address (A1)
D5
AC_OK
A6
Remote Sense (-)
B6
SCL (I2C bus)
C6
I2C Address (A2)
D6
SMBAlert
P1 – P6
Output Return
P7– P12
+12VOUT
2
Function
For factory use
September 5, 2014
©2013 General Electric Company. All rights reserved.
Page 14
GE
Data Sheet
CAR2512TE Front-End
Input: 90VAC to 264VAC; Output: 12 VDC @ 2500W; 3.3/5VDC standby @ 15W
Ordering Information
Please contact your GE Sales Representative for pricing, availability and optional features.
PRODUCT
DESCRIPTION
PART NUMBER
2500W Front-End
+12VOUT , 3.3VSTDBY, face plate, PMBus interface, RoHS 6 of 6
2500W Front-End
+12VOUT , 5VSTDBY, face plate, PMBus interface, RoHS 6 of 6
CAR2512TEBXXZ01A
CAR2512TEBX5Z01A
2500W Front-End
+12VOUT , 3.3VSTDBY, face plate, PMBus interface, reverse airflow RoHS 6 of 6
CAR2512TEBCRZ01A
PART NUMBER DEFINITION GUIDE EXAMPLE
CAR
25
12
Power
25 = 2500W
Output voltage
12 = 12Vdc
TE
x
x
x
Options
B – bezel
C – i2c option
R – reverse airflow
Vstdby – 3 or 5
Type
FP – AC; Vo-positive
TN – AC; Vo-negative
DC - DC
TE – AC; high efficiency
Z
01 A
A – Standard
model
RTM
RoHS
Blank – non compliant
Y – 5 of 6 compliant
Z – 6 of 6 compliant
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 5, 2014
©2013 General Electric Company. All rights reserved.
Page 15