GE
Data Sheet
June 10, 2016 ©2016 General Electric Company. All rights reserved. Page 1
CAR0812FP series rectifier
Input: 85V
AC
to 264V
AC
; Output: 12V
DC
@ 850W; 3.3V
DC
or 5 V
DC
@ 1A
Features
Universal input with PFC
Constant power characteristic
2 front panel LEDs: LED1-input
LED2 - [output, fault, over temp]
Remote ON/OFF control of the 12V
DC
output
Remote sense on the 12V
DC
output
No minimum load requirements
Active load sharing (single wire)
Hot Plug-ability
Efficiency: typically 92.5% @ 50% load
and 90.0% @ 20% load
Standby orderable either as 3.3V
DC
or 5V
DC
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 A or B FCC docket 20780 part 15, EN55022
Meets EN6100 immunity and transient standards
Shock & vibration: NEBS GR-63-CORE, level 3
Applications
12V
DC
distributed power architectures
Datacom and Telecom applications
Mid to high-end Servers
Enterprise Networking
Network Attached Storage
Telecom Access Nodes
Routers/Switches
ATE Equipment
Description
The CAR0812FP series of rectifiers provide highly efficient isolated power from world-wide commercial AC mains.
Offered in the industry standard compact 1U form factor, these rectifiers complement the CAR0812DC converter line,
providing comprehensive solutions for systems connected either to commercial ac mains or 48/60VDC power plants.
This plug and play approach, between AC and DC input units, has significant advantages since systems can be readily
reconfigured 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
growthThe 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)
RoHS Compliant
GE Data Sheet
CAR0812FP series rectifier
Input: 85VAC to 264VAC; Output: 12VDC @ 850W; 3.3VDC or 5 VDC @ 1A
June 10, 2016 ©2016 General Electric Company. All rights reserved. Page 2
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.
Parameter Symbol Min Max Unit
Input Voltage: Continuous VIN 0 264 VAC
Operating Ambient Temperature TA -10 701 °C
Storage Temperature Tstg -40 85 °C
I/O Isolation voltage to Frame (100% factory Hi-Pot tested for 1s) 2600 VDC
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, load, and temperature conditions.
INPUT
Parameter Symbol Min Typ Max Unit
Operational Range VIN 852 110/230 264 Vac
Frequency Range FIN 47 50/60 63 Hz
Main Output Turn_OFF VIN 68 75 VAC
Main Output Turn ON VIN 76 84 VAC
Maximum Input Current VIN= 100VAC IIN
11
6.1 AAC
(VOUT= VO, set, IOUT=IO, max) VIN= 180VAC
Cold Start Inrush Current IIN 40 APEAK
(Excluding x-caps, 25C, <10ms, per ETSI 300-132)
Efficiency (TAMB=25C, VOUT= 12V, IO, max)
230V 115V
90 87
%
100% load
75% load 91 89
50% load 92.5 90
20% load 90 88
10% load 82.5 83
Power Factor (Vin=230VAC, IOUT=IO, max) PF 0.99
Holdup time3
(TAMB 25C, VOUT = 12VDC, IOUT = IO, max) T 12 ms
Early warning prior to output falling below regulation T 2 ms
Leakage Current (VIN= 250VAC, Fin = 60Hz) IIN 3 DC
Isolation Input/Output
3000 VAC
Input/Frame 1500 VAC
Output/Frame 100 VDC
12Vdc MAIN OUTPUT
Parameter Symbol Min Typ Max Unit
Output Power VIN > 90VAC W 0 - 850
W
VIN ≤ 90VAC 0 - 750
Set point VOUT
11.9 12.00 12.1 VDC
Overall regulation (line, load, temperature) -2 +2 %
Ripple and noise4 VOUT
120 mVp-p
Turn-ON overshoot +3 %
1 Derated above 50C at 2.5%/C
2 Unit derates to 750W below 90Vac.
3 12V output can decay down to 10.8V
4 Measured across a 10µf electrolytic and a 0.1µf ceramic capacitors in parallel. 20MHz bandwidth
GE Data Sheet
CAR0812FP series rectifier
Input: 85VAC to 264VAC; Output: 12VDC @ 850W; 3.3VDC or 5 VDC @ 1A
June 10, 2016 ©2016 General Electric Company. All rights reserved. Page 3
12Vdc MAIN OUTPUT (continued)
Parameter Symbol Min Typ Max Unit
Turn-ON delay
T
2 sec
Remote ON/OFF delay time 40 ms
Turn-ON rise time (10 – 90% of VOUT) 50 ms
Transient response 50% step [10%-60%, 50% - 100%]
(di/dt – 1A/µs, recovery 500µs)
VOUT
-5 +5 %VOUT
Programmable range (hardware & software) 10.8 13.2 VDC
Overvoltage protection, latched
(recovery by cycling OFF/ON via hardware or software) 13.5 14.5 15.5
VDC
Output current
IOUT
0 71
ADC
Current limit, Hiccup (level programmable) 106 125 % of FL
Active current share – greater than 20% load -5 +5 % of FL
STANDBY OUTPUT
Parameter Symbol Min Typ Max Unit
Set point VOUT 3.3 / 5.0 VDC
Overall regulation (load, temperature, aging) VOUT -5 +5 %
Ripple and noise 50 mVp-p
Output current IOUT 0 1 ADC
Isolation Output/Frame 100 VDC
General Specifications
Parameter Min Typ Max Units Notes
Reliability 300,000
100,000
hrs Full load, 25C per Bellcore RPP
Full load, 50C per Bellcore RPP
Service Life 10 Yrs Full load, excluding fans
Weight 1.09 (2.4) Kgs (Lbs)
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
Remote ON/OFF (Needs to be pulled HI via an external resistor)
Logic High (Module ON) IIH 20 µA
VIH 0.7VDD 12 VDC
Logic Low (Module OFF) IIL 1 mA
VIL 0 0.8 VDC
GE Data Sheet
CAR0812FP series rectifier
Input: 85VAC to 264VAC; Output: 12VDC @ 850W; 3.3VDC or 5 VDC @ 1A
June 10, 2016 ©2016 General Electric Company. All rights reserved. Page 4
Feature Specifications (continued)
Parameter Symbol Min Typ Max Unit
Output Voltage programming (Vprog) [internally 1k pull up to 3.3V]
Equation: VOUT = 10.8 + (Vprog * 0.96)
Vprog range Vprog 0 2.5 VDC
Programmed output voltage range VOUT 10.8 13.2 VDC
Voltage adjustment resolution (8-bit A/D) VOUT 10 mVDC
Output configured to 13.2VDC Vprog 2.5 3.0 VDC
Output configured to the 12VDC set-point Vprog 3.0 VDC
Enable [short pin controlling presence of the 12VDC output]
12V output OFF VI 0.7VDD 12 VDC
12V output ON VI 0 0.8 VDC
Write protect (Wp)
Write protect enabled VI 0.7VDD 12 VDC
Write protect disabled VI 0
0.8 VDC
INPUT(AC)-OK (Needs to be pulled HI via an external resistor)
Logic High (Input within normal range) IOH 20 µA
VOH 0.7VDD 12 VDC
Logic Low (Input out of range) IOL 4 mA
VOL 0 0.4 VDC
DC-OK (Needs to be pulled HI via an external resistor)
Logic High (Output voltage is present) IOH 20 µA
VOH 0.7VDD 12 VDC
Logic Low (Output voltage is not present) IOL 4 mA
VOL 0 0.4 VDC
Over Temperature Warning (Needs to be pulled HI via an external resistor)
Logic High (temperature within normal range) IOH 20 µA
VOH 0.7VDD 12 VDC
Logic Low (temperature is too high) IOL 4 mA
VOL 0 0.4 VDC
Delayed shutdown after Logic Low transition Tdelay 10 sec
Fault (Needs to be pulled HI via an external resistor)
Logic High (No fault is present) IOH 20 µA
VOH 0.7VDD 12 VDC
Logic Low (Fault is present) IOL 4 mA
VOL 0 0.4 VDC
PS Present (Needs to be pulled HI via an external resistor)
Logic High (Power supply is not plugged in)
Logic Low (Power supply is present) VIL 0 0.1 VDC
GE Data Sheet
CAR0812FP series rectifier
Input: 85VAC to 264VAC; Output: 12VDC @ 850W; 3.3VDC or 5 VDC @ 1A
June 10, 2016 ©2016 General Electric Company. All rights reserved. Page 5
Feature Specifications (continued)
Parameter Symbol Min Typ Max Unit
SMBAlert# (Interrupt) (Needs to be pulled HI via an external resistor)
Logic High (No Alert - normal) IOH 20 µA
VOH 0.7VDD 12 VDC
Logic Low (Alert is set) IOL 4 mA
VOL 0 0.4 VDC
Output current monitor (Imon)
Resolution 40 mV/A
Accuracy, load greater than 25% -10 10 %
Measurement range Io 0 80 ADC
Analog output range Vmon 0 3 VDC
Sourced output current Io 5 mADC
Digital Interface Specifications
Parameter Conditions Symbol Min Typ Max Unit
PMBus Signal Interface Characteristics
Input Logic High Voltage (CLK, DATA) VIH 2.1 3.6 VDC
Input Logic Low Voltage (CLK, DATA) VIL 0 0.8 VDC
Input high sourced current (CLK, DATA) IIH 0 10 μA
Output Low sink Voltage (CLK, DATA, SMBALERT#) IOUT=3.5mA VOL 0.4 VDC
Output Low sink current (CLK, DATA, SMBALERT#) IOL 3.5 mA
Output High open drain leakage current (CLK,DATA,
SMBALERT#) VOUT=3.6V IOH 0 10 μA
PMBus Operating frequency range Slave Mode FPMB 10 400 kHz
Measurement System Characteristics (all measurement tolerances are typical estimations under normal operating conditions)
Clock stretching tSTRETCH 25 ms
IOUT measurement range Linear IRNG 0 80 ADC
IOUT measurement accuracy 25°C IACC -5 +5 %
VOUT measurement range Linear VOUT(rng) 0 14 VDC
VOUT measurement accuracy VOUT(acc) -5 +5 %
Temp measurement range Linear Temp(rng) 0 120 C
Temp measurement accuracy5 Temp(acc) -5 +5 %
IIN measurement range Linear IIN(rng) 0 15 AAC
IIN measurement accuracy I
IN(acc) -5 +5 %
VIN measurement range Linear VIN(rng) 0 300 VAC
VIN measurement accuracy VIN(acc) -5 +5 %
PIN measurement range Linear PN(rng) 0 1000 W
PIN measurement accuracy PIN(acc) -5 +5 %
Fan Speed measurement range Linear 0 30k RPM
Fan Speed measurement accuracy -10 10 %
Fan speed control range Linear 0 100 %
5 Temperature accuracy reduces non-linearly with decreasing temperature
GE Data Sheet
CAR0812FP series rectifier
Input: 85VAC to 264VAC; Output: 12VDC @ 850W; 3.3VDC or 5 VDC @ 1A
June 10, 2016 ©2016 General Electric Company. All rights reserved. Page 6
Environmental Specifications
Parameter Min Typ Max Units Notes
Ambient Temperature -106 70 °C
Derated above 50C - normal air
above 40C – reverse air
Storage Temperature -40 85 °C
Operating Altitude 2250/7382 m/ft
Non-operating Altitude 8200/30k m / ft
Power Derating with Temperature 2.5 %/°C 50C to 70C – normal air
40C to 60C – reverse air
Power Derating with Altitude 2.0 C/301 m
C/1000 ft
Above 2250 m/7382 ft
Acoustic noise 55 dbA Full load
Over Temperature Protection 125/110 °C Shutdown / restart
Humidity
Operating
Storage
30
10
95
95
% Relative humidity, non-condensing
Shock and Vibration acceleration 6 Grms
NEBS GR-63-CORE, Level 3, 20 -
2000Hz, min 30 minutes
Earthquake Rating
4
Zone
NEBS GR-63-CORE, all floors, Seismic
Zone 4 Designed and tested to meet
NEBS specifications.
EMC Compliance
Parameter Criteria Standard Level Test
AC input7
Conducted emissions EN55022, FCC Docket 20780 part 15, subpart J
EN61000-3-2
A – Z01A
B – Z01B
0.15 – 30MHz
0 – 2 KHz
Radiated emissions EN55022 A – Z01A
B – Z01B
30 – 10000MHz
AC Input immunity
Voltage dips EN61000-4-11 A -30%, 10ms
B -60%, 100ms
B -100%, 5sec
Voltage surge EN61000-4-5 A 2kV, 1.2/50µs, common mode
A 1kV, 1.2/50µs, differential mode
Fast transients EN61000-4-4 B 5/50ns, 2kV (common mode)
Enclosure immunity
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
ESD EN61000-4-2 B 4kV contact, 8kV air
6 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.
7 The ….Z01A module meets class A emissions, the …..Z01B module meets class B emissions (see ordering section)
GE Data Sheet
CAR0812FP series rectifier
Input: 85VAC to 264VAC; Output: 12VDC @ 850W; 3.3VDC or 5 VDC @ 1A
January 7, 2013 ©2016 General Electric Company. All rights reserved. Page 7
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 ‘Vstb return’ and ‘Signal return’.
Control Signals
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:
VOUT = 10.8 + (Vprog * 0.96) where Vprog = 0 to 2.5VDC
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.
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.
Fan speed control: The speed of the fan can be increased
above that point that is required for internal cooling. The
speed of the fan cannot be decreased below internal
cooling requirements.
Status signals
Output current monitor (Imon): A voltage level proportional
to the delivered output current is present on this pin. The
signal level is 0.04V per amp ± 0.25V.
Input_OK: A TTL compatible status signal representing
whether the input voltage is within the anticipated range.
This signal needs to be pulled HI externally through a
resistor.
DC_OK: A TTL compatible status signal representing
whether the output voltage is present. This signal needs to
be pulled HI externally through a resistor.
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.
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.
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.
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
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 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 requires an external pull-up to 3.3V.
Serial Data (SDA): This line is a bi-directional data line. This
signal requires an external pull-up to 3.3V.
GE Data Sheet
CAR0812FP series rectifier
Input: 85VAC to 264VAC; Output: 12VDC @ 850W; 3.3VDC or 5 VDC @ 1A
June 10, 2016 ©2016 General Electric Company. All rights reserved. Page 8
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;
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
Internal faults
The power supply will clear the SMBusAlert# signal (release
the signal to its HI state) upon the following events:
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 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 needs at least 2
seconds to configure the status registers into their final
state. For example, a 2 second delay is required prior to
reading back status information after a clear_faults has
been issued to clear the status registers.
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.
Clock
Stretch
GE Data Sheet
CAR0812FP series rectifier
Input: 85VAC to 264VAC; Output: 12VDC @ 850W; 3.3VDC or 5 VDC @ 1A
June 10, 2016 ©2016 General Electric Company. All rights reserved. Page 9
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 8 1 8 1
S Slave address Wr A Command Code A
8 1 8 1 8 1 1
Low data byte A High data byte A PEC A 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 7 1 1 8 1
S Slave address Wr A Command Code A
1 7 1 1 8 1
Sr Slave Address Rd A LSB A
8 1 8 1 1
MSB A PEC No-ack P
Block instruction: 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 7 1 1 8 1
S Slave address Wr A Command Code A
8 1 8 1 8 1
Byte count = N A Data 1 A Data 2 A
8 1 8 1 8 1 1
………. A Data 48 A PEC A P
Block read format:
1 7 1 1 8 1
S Slave address Wr A Command Code A
1 7 1 1
Sr Slave Address Rd A
8 1 8 1 8 1
Byte count = N A Data 1 A Data 2 A
8 1 8 1 8 1 1
………. A Data 48 A PEC NoAck
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.
Data Byte High Data Byte Low
Bit
7
6
5
4
3
2
1
0 7 6 5 4 3
2
1
0
Exponent (E) Mantissa (M)
The relationship between the Mantissa, Exponent, and
Actual Value (V) is given by the following equation:
E
MV 2
Where:
V is the value
M is the 11-bit, two’s complement mantissa
E is the 5-bit, two’s complement exponent
PMBusTM Command set:
Command
Hex
Code
Data
Byte Function
Operation 01 1 Output ON/OFF
ON_OFF_config 02 1 09, output ON default
Clear_faults 03 0 Clear Status
Write_protect 10 1 Write control
Store_default_all 11 0 Store permanently
Restore_default_all 12 0 Reset defaults
Capability 19 1 30h, 400kHz, SMBAlert
Vout_mode 20 1 Vout constants
Vout_command 21 2 Set Vout
Vout_OV_fault_limit 40 2 Set OV fault limit
Vout_OV_fault_response 41 1
Vout_OV_warn_limit 42 2 Set OV warn limit
Vout_UV_warn_limit 43 2 Set UV warn limit
Vout_UV_fault_limit 44 2
Vout_UV_fault_response 45 1
Iout_OC_fault_limit 46 2
Iout_OC_fault_response 47 1
Latch or hiccup
Iout_OC_warn_limit 4A 2
Set OC warn limit
OT_fault_limit 4F 2
102C, reverse air 91C
OT_fault_response 50 1
Latch or hiccup
OT_warn_limit 51 2
Set OT warn limit
UT_warn_limit 52 2
UT_fault_limit 53 2
UT_fault_response 54 1
Vin_OV_fault_limit 55 2
Vin_OV_warn_limit 57 2
Set OV warn limit
Vin_UV_warn_limit 58 2 Set UV warn limit
Vin_UV_fault_limit 59 2 Set UV shutdown
Status_byte 78 1
Status_word 79 2
Status_Vout 7A 1
Status_Iout 7B 1
Status_input 7C 1
Status_temperature 7D 1
GE Data Sheet
CAR0812FP series rectifier
Input: 85VAC to 264VAC; Output: 12VDC @ 850W; 3.3VDC or 5 VDC @ 1A
June 10, 2016 ©2016 General Electric Company. All rights reserved. Page 10
Command
Hex
Code
Data
Field Function
Status_CML 7E 1
Status_other 7F 1
Status_mfr_specific 80 1
Status_fan_1_2 81 1
Read_Vin 88 2 Read input voltage
Read_Iin 89 2 Read input current
Read_Vout 8B 2 Read output voltage
Read_Iout 8C 2 Read output current
Read_temperature 8D 2 Read Temperature
Read_fan_speed_1 90 2 In RPM
Read_fan_speed_2 91 2 In RPM
Read_Pout 96 2
Read_Pin 97 2
PMBus revision 98 1
Mfr_ID 99 5 FRU_ID
Mfr_model 9A 15
Mfr_revision 9B 4
Mfr_location 9C 4
Mfr_date 9D 6
Mfr_serial 9E 15
Mfr_Vin_min A0 2 85V (linear format)
Mfr_Vin_max A1 2 264V (linear format)
Mfr_Iin_max A2 2 13A (linear format)
Mfr_Pin_max A3 2 950W (linear format)
Mfr_Vout_min A4 2 10V (linear format)
Mfr_Vout_max A5 2 15V (linear format)
Mfr_Iout_max A6 2 71A (linear format)
Mfr_Pout_max A7 2 850W (linear format)
Mfr_Tambient_max A8 2 70C (linear format)
Mfr_Tambient_min A9 2 -10C (linear format)
User_data_00 B0 48
User memory space
User_data_01 B1 48
User memory space
FRW_revision D0 1
Ilimit_control_I2C D3 2
Ilimit set (1/100A)
Vout_control_ I2C D4 2
Vout set (1/512V)
Vout_offset D5 1
Fan_duty_cycle D6 1
Duty_cycle in %
Fan_speed D7 1
Control duty cycle in %
Vprog_ext D8 2 3.3/1023
Read_Vout_ I2C E0 2 1/512V
Read_Iout_ I2C E1 2 1/100A
Read_TS_ I2C E2 2
Heat sink temp C
CMD_OFF_ I2C E3 2 01-OFF, 00-ON
OTF_limit_ I2C E4 2
OT fault limit C
OTF_recovery_ I2C E5 2
OT fault recovery C
DCOKHI_ I2C E6 2 High OV fault (1/512V)
DCOKLO_ I2C E7 2 Low OV fault (1/512V)
Read_Vin_ I2C ED 2 Vin (1/100V)
Read_Iin_ I2C EE 2 Iin (1/100A)
Read_Pin_ I2C EF 2 Pin
Status Register Bit Allocation:
Register
Hex
Cod
e
Dat
a
Byte Function
Status_Byte 78
7 Busy
6 DC_ OFF
5 Output OV Fault detected
4 Output OC Fault detected
3 Input UV Fault detected
2 Temp Fault/warning detected
1 CML (communication fault)
detected
0 None of Below
Status_word
(includes
Status_byte)
79
7 OV Fault/Warning detected
6 OC Fault/Warning detected
5 Input Fault/Warning detected
4 Mfr_specific register change
detected
3 DC_OFF
2 Fan Fault or Warning detected
1 Other fault
0 Unknown
Status_Vout 7A
7 Vout OV Fault
6 Vout OV Warning
5 Vout UV Warning
4 Vout UV Fault
3 N/A
2 N/A
1 N/A
0 N/A
Status_Iout 7B
7 IOUT OC Fault
6 N/A
5 IOUT OC Warning
4 N/A
3 N/A
2 N/A
1 N/A
0 N/A
Status_input 7C
7 Vin OV Fault
6 Vin OV Warning
5 Vin UV Warning
4 Vin UV Fault
3 N/A
2 N/A
1 N/A
0 N/A
Status_temperature
7D
7 OT Fault
6 OT Warning
5 N/A
4 N/A
3 N/A
2 N/A
1 N/A
0 N /A
Status_cml 7E 7 Invalid/Unsupported
Command
6 Invalid/Unsupported Data
5 Packet Error Check Failed
4 Memory Fault Detected
3 Processor Fault Detected
2 Reserved
1 Other Communications Fault
0 Other Memory or Logic Fault
GE Data Sheet
CAR0812FP series rectifier
Input: 85VAC to 264VAC; Output: 12VDC @ 850W; 3.3VDC or 5 VDC @ 1A
June 10, 2016 ©2016 General Electric Company. All rights reserved. Page 11
Register
Hex
Code
Data
Byte Function
Status_mfr_specific 80 7 3.3V_fault
6 N/A
5 Interrupt
4 Fault detected
3 PS_remote_OFF
2 DC_fault
1 INPUT_fault
0 1- Low line
Status_fan_1_2 81 7 N/A
6 N/A
5 N/A
4 N/A
3 Fan 1 Speed Overridden
2 Fan 2 Speed Overridden
1 N/A
0 N/A
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 DATA BYTE
Unit ON 80
Unit OFF 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 DATA BYTE
Enable all writes 00
Disable all writes except write_protect 80
Disable all writes except write_protect and
OPERATION
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.
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 for latch OFF resets and the 1 minute window starts
all over again.
GE Data Sheet
CAR0812FP series rectifier
Input: 85VAC to 264VAC; Output: 12VDC @ 850W; 3.3VDC or 5 VDC @ 1A
June 10, 2016 ©2016 General Electric Company. All rights reserved. Page 12
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.
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.
Control and Read accuracy:
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.
Note that temperature measurements are accurate around
the shutdown limits and they get increasingly less accurate
as the temperature level decreases.
FUNCTION
ACCURACY
Vout_command ± 2%
Vout_OV_fault_limit ± 3%
Iout_OC_warn_limit ± 4% of FL
OT_warn_limit ± 5C
Vin_UV_warn_limit ± 3%
Vin_UV_fault_limit ± 3%
Read_Vin ± 3%
Read_Vout ± 2%
Read_Iout ± 4% of FL
Read_temperature ± 5C
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
Two 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.
The second LED DC/FLT is a tri-state LED. When GREEN there are no
faults and DC output is present. When AMBER a fault condition
exists but the power supply still provides output power. When RED
then a fault condition exists and the power supply does not provide
output power.
Alarm Table
Test Condition
LED Indicator Monitoring Signals
LED1
AC
Tri-Color LED2
DC / FLT FAULT DC OK INPUT OK TEMP 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 Red Low Low High High
Notes: Test condition #2 had 2 modules plug in. One module is running and the other one is with no AC.
GE
Data Sheet
CAR0812FP series rectifier
Input: 85V
AC
to 264V
AC
; Output: 12V
DC
@ 850W; 3.3V
DC
or 5 V
DC
@ 1A
June 10, 2016 ©2016 General Electric Company. All rights reserved. Page 13
Outline Drawing
airflow
No handle, ac inlet – replace with wire extension with stress relief. 16ga -
Connector Pin Assignments
Input Mating Connector: IEC320, C13 type
Output Connector: FCI Berg P/N: 51732-077LF (replaces 51722-10402400ABLF)
Mating connector: 51762-10402400ABLF
Pin Function Pin Function Pin Function Pin Function
A1 V
STDBY
[3.3V] B1 Fault C1 ISHARE D1 VProg
A2 V
STDBY
[3.3V] Return B2 I Monitor (IMON) C2 N/C D2 OVP Test Point
A3 Signal Return B3 Enable C3 Over Temp Warning D3 Remote ON/OFF
A4 Write Protect (WP) B4 PS Present C4 I
2
C Address (A0) D4 DC OK
A5 Remote Sense (+) B5 SDA (I
2
C bus) C5 I
2
C Address (A1) D5 INPUT OK
A6 Remote Sense (-) B6 SCL (I
2
C bus) C6 I
2
C Address (A2) D6 SMBAlert#/Interrupt
P1 +V
OUT
P2 +V
OUT
P3 Output Return P4 Output Return
AC DC
FLT
.935
3.380 ± .020
1.610 ± .020
.555
D1
A1
PIN 1
OUTPUT CONNECTOR
INPUT CONNECTOR
BEZEL
HANDLE
9.172 ±.020
8.730 ±.020
.370 ±.020
COVER
GE Data Sheet
CAR0812FP series rectifier
Input: 85VAC to 264VAC; Output: 12VDC @ 850W; 3.3VDC or 5 VDC @ 1A
Contact Us
For more information, call us at
USA/Canada:
+1 877 546 3243, or +1 972 244 9288
Asia-Pacific:
+86.021.54279977*808
Europe, Middle-East and Africa:
+49.89.878067-280
http://www.geindustrial.com/products/critical-power
GE Critical Power reserves the right to make changes to the product(s) or information contained herein without notice, and
no liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such
product(s) or information.
June 10, 2016 ©2016 General Electric Company. All International rights reserved. Page 14
Ordering Information
Please contact your GE Sales Representative for pricing, availability and optional features.
PRODUCT DESCRIPTION PART NUMBER
850W Rectifier +12VOUT, 3.3VSTDBY, with face plate, PMBus interface, RoHS 6 of 6, Class A EMI CAR0812FPBXXZ01A
850W Rectifier +12VOUT, 5VSTDBY, with face plate, PMBus, RoHS 6 of 6, Class A EMI CAR0812FPBX5Z01A
850W Rectifier +12VOUT, 3.3VSTDBY, with face plate, PMBus, RoHS 6 of 6, Class B EMI CAR0812FPBXXZ01B
850W Rectifier +12VOUT, 5VSTDBY, with face plate, PMBus, RoHS 6 of 6, Class B EMI CAR0812FPBX5Z01B
850W Rectifier +12VOUT, 3.3VSTDBY,no face plate, PMBus, ROHS 6 of 6, Class A EMI CAR0812FPXXXZ01A
850W Rectifier +12VOUT, 3.3VSTDBY,no face plate, PMBus, reverse airflow, ROHS 6 of 6, Class A EMI CAR0812FPBRXZ01A
850W Rectifier +12VOUT, 3.3VSTDBY,no face plate, PMBus, reverse airflow, ROHS 6 of 6, Class B EMI CAR0812FPBRXZ01B
PART NUMBER DEFINITION GUIDE EXAMPLE
CAR 08 12 FP x x x Z 01 A
RTM
RoHS
Blank – non compliant
Y – 5 of 6 compliant
Z – 6 of 6 compliant
Options
B – bezel
C – i2c option
R – reverse airflow
Vsb = 3
Output Power
08 = 850W
Output voltage
12 = 12Vdc
Type
FP – AC; V
o-
positive
DC - DC
A or B – Standard
model
