GE Industrial Solutions CAR2012TE User Manual

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Data Sheet

CAR2012TE series rectifier

Input: 85Vac to 264Vac; Output: 12Vdc @ 2000W; 3.3 @ 4A or 5Vdc @ 3A Standby

Features

 Efficiency: 95 % @ 50% load. Under most load conditions

exceeding 80plus “Titanium” criteria

 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 @ 4A or 5Vdc @ 3A  Auto recoverable OC & OT protection  Operating temperature: -10 - 70C (de-rated above 50C)  Digital status & control: PMBus serial bus  EN/IEC/UL/CSA C22.2 60950-1 2  CE mark§  Meets FCC part 15, EN55022 Class A standards  Meets EN61000 immunity and transient standards  Shock & vibration: Meets IPC 9592 Class II standards

Applications



12Vdc distributed power architectures



Datacom and Telecom applications



Mid to high-end Servers



Routers/Switches



Broadband Switches



ATE Equipment

edition +A1, CCC

Description

The CAR2012TE Front-End provides highly efficient isolated power from worldwide input mains in a compact 1U industry standard form factor. This power supply is ideal for applications where mid to light load efficiency is of key importance in order to reduce system power consumption during ‘typical’ operational conditions.

The high-density, front-to-back airflow is designed for minimal space utilization and is highly expandable for future growth. The industry standard PMBus compliant I monitoring capabilities. The SMBAlert signal pin automatically alerts customers 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)

C communications buss offers a full range of control and

Data Sheet

CAR2012TE series rectifier

Input: 85Vac to 264Vac; Output: 12 Vdc @ 2000W; 3.3Vdc or 5 Vdc @ 4A

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 70 °C

Storage Temperature Tstg -40 85 °C

I/O Isolation voltage to Frame (100% factory Hi-Pot tested) 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

Operational Range VIN 85 115/230 264 VAC

Frequency Range (ETSI 300-132-1 recommendation)

Main Output Turn OFF

Hysteresis between turn OFF and turn ON 3 5

Maximum Input Current (VO= V

VIN= 180VAC

Cold Start Inrush Current (Excluding x-caps, 25C, <10ms, per ETSI 300-132)

Efficiency (T

=25C, VO= 12V) VIN

amb

O, set

, IO=I

) VIN= 100VAC

O, max

100% load 50% load 20% load



10% load

Power Factor (VIN=115/230VAC), IO= 50% I

IO= I

O, max

Holdup time (Vout = 12.0VDC, Tamb 25C, IO=80% I V

= 230VAC

= 100VAC

Early warning prior to output falling below regulation1 (Vout = 12.0V

, Tamb 25C, IO=80% I

O, max

)

O, max

)

T 12

Ride through T 10

Leakage Current (VIN= 250VAC, FIN = 60Hz) I

Isolation Input/Output

Input/Frame 2121 V

Output/Frame 100 V

12Vdc MAIN OUTPUT

Parameter Symbol Min Typ Max Unit

Output Power 180 – 264 / 90-132 Vac

≤ 90V

Set point Overall regulation (load, temperature) -2 +2 %

47 50/60 63 Hz

75 82

VAC Main Output Turn ON 80 88

40 A

15.5

12.5

AAC

PEAK

115V / 230V

92 / 93.0 93 / 95.0

91 / 94.0 85 / 91.0

0.98

0.99

3 mA

3000 V

0 - 2000/1300 W

0 - 1200 W

11.9 12.00 12.1 V

RMS

Measured by the DC_OK signal going LO prior to the output decaying below 10.8Vdc

Data Sheet

CAR2012TE series rectifier

Input: 85Vac to 264Vac; Output: 12 Vdc @ 2000W; 3.3Vdc or 5 Vdc @ 4A

MAIN OUTPUT (continued)

12V

Parameter Symbol Min Typ Max Unit

Ripple and noise2 at 25C, ( relaxed to 150mV

below 0C)

P-P

120 Turn-ON overshoot +3 % Turn-ON delay T 2 sec Remote ON/OFF delay time Turn-ON rise time (10 – 90% of V

)

out

Transient response 50% step [10%-60%, 50% - 100%] (dI/dt – 1A/µs, recovery 300µs)

Programmable range (hardware & software) 10.8 13.2

Overvoltage protection, latched (recovery by cycling OFF/ON via hardware or software)

Output current 180 ≥ VIN ≥ 264 90 ≥ V

Current limit, Hiccup (programmable level) 110 130 % of FL Active current share, ( IO ≥ 20% of I

≥ 132

) -5 +5 % of FL

O,MAX

40 ms 50 ms

-5 +5 %V

13.8 14.8 15.8

167 108

STANDBY OUTPUT

Parameter Symbol Min Typ Max Unit

Set point VO 3.3 / 5.0 V

Overall regulation (load, temperature, aging) VO -5 +5 %

Ripple and noise, STANDBY CLOCK – I DATA – I

Output current [3.3V / 5V] I

0 4 / 3 A

100 mV

Overload protection - 110 150 % of FL Isolation Output/Frame 100

P-P

General Specifications

Parameter Min Typ Max Units Notes

Reliability, 25C 50C

320,000 100,000

Hrs

Service Life 10 Yrs Full load, excluding fans

Weight

Full load, ; MTBF per SR232 Reliability protection for electronic equipment, method I, case III,

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 (pulled up internally within the module)

Logic High (Module ON) Logic Low (Module OFF) I

Measured across a 10µf tantalum and a 0.1µf ceramic capacitors in parallel. 20MHz bandwidth

0.7V

STDBY

 



STDBY

1 mA

0.8 VDC

Data Sheet

CAR2012TE series rectifier

Input: 85Vac to 264Vac; Output: 12 Vdc @ 2000W; 3.3Vdc or 5 Vdc @ 4A

Feature Specifications (continued)

Parameter Symbol Min Typ Max Unit

Output Voltage programming (Vprog)

Equation: Vout = 10.8 + (Vprog * 0.96) Vprog range V Programmed output voltage range Vo Voltage adjustment resolution (8-bit A/D) Vo Output configured to 13.2Vdc V Output configured to the 12Vdc set-point V Interlock [short pin controlling presence of the 12VDC output] 12V output OFF VI 12V output ON VI AC-OK (internally pulled up to Stndby via a 10kΩ resistor) Logic High (Input within normal range) I

Logic Low (Input out of range) I

V DC-OK (internally pulled up to Stndby via a 10kΩ resistor) Logic High (Output voltage is present; V

≥ 10.7Vdc) I

OUT

V Logic Low (Output voltage is not present; V

≤ 10.2V

OUT

) I

prog

10.8 

2.5 3.0 VDC

prog

3.0

 

2.5 VDC

13.2 VDC 

mVDC

VDC

0.7V

 

12 V

0.8 VDC

0.7V

 



20 µA 12 V

4 mA

0.4 VDC

0.7V

 



20 µA 12 V

4 mA

0.4 VDC

OT Warning (internally pulled up to Stndby via a 10kΩ resistor)

Logic High (temperature within normal range) I

V Logic Low (temperature is too high) I V

0.7V

 



20 µA 12 V

4 mA

0.4 VDC Delayed shutdown after Logic Low transition Tdelay 10 sec Fault (internally pulled up to Stndby via a 10kΩ resistor) Logic High (No fault is present) I

Logic Low (Fault is present) I

PS Present (connected to output GRD inside the power supply)

Logic High (Power supply is not plugged in) Logic Low (Power supply is present) VIL 0

0.7V

 



20 µA 12 V

4 mA

0.4 VDC



0.1 VDC

Data Sheet

CAR2012TE series rectifier

Input: 85Vac to 264Vac; Output: 12 Vdc @ 2000W; 3.3Vdc or 5 Vdc @ 4A

Feature Specifications (continued)

Parameter Symbol Min Typ Max Unit

SMBAlert# (Interrupt) (must be pulled up externally to Stndby)

Logic High (No Alert - normal) I

Logic Low (Alert is set) I

V Output current monitor (Imon) Resolution Measurement range IO 0 167 ADC Measurement accuracy, load > 25% of FL, VO = 12VDC -4 +4 % Analog output range V 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 0.7V

Input Logic Low Voltage (CLK, DATA) VIL 0 0.8 V

Input high sourced current (CLK, DATA) IIH 0 10 μA

Output Low sink Voltage (CLK, DATA, SMBALERT#) IO=5mA VOL 0.4 V

Output Low sink current (CLK, DATA, SMBALERT#) IOL 5 mA

Output High open drain leakage current (CLK,DATA, SMBALERT#)

PMBus Operating frequency range FPMB 10 400 kHz

Measurement System Characteristics

Clock stretching tSTRETCH 25 ms

measurement range

OUT

measurement accuracy 25°C

OUT

measurement range

OUT

measurement accuracy

OUT

Temp measurement range Temp measurement accuracy3

IIN measurement range Linear mode IIN measurement accuracy

VIN measurement range VIN measurement accuracy

PIN measurement range PIN measurement accuracy

Fan Speed measurement range

Fan Speed measurement accuracy

Fan speed control range

=3.6V I

Linear mode

0.7V

 



20 µA 12 V

4 mA

0.4 VDC

0 3.3 VDC

mon

RNG

ACC

OUT(rng)

OUT(acc)

Temp

IN(rng)

IN(acc)

IN(rng)

IN(acc)

N(rng)

IN(acc)

18 mV/A

3.6 V

(rng)

(acc)

0 10 μA

0 167 A

-5 +5 %

0 14 V

-5 +5 %

0 125

-5 +5 %

0 18 A

-5 +5 %

0 300 V

-5 +5 %

0 3000 W

-5 +5 %

0 30k RPM

-10 10 %

0 100 %

C

rms

Temperature accuracy reduces non-linearly with decreasing temperature

Data Sheet

CAR2012TE series rectifier

Input: 85Vac to 264Vac; Output: 12 Vdc @ 2000W; 3.3Vdc or 5 Vdc @ 4A

Environmental Specifications

Parameter Min Typ Max Units Notes

Ambient Temperature

Storage Temperature -40 85 °C

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

Acoustic noise 55

Over Temperature Protection 125/110 °C Shutdown / restart

Humidity Operating Storage

Shock and Vibration Meet IPC 9592 Class II, Section 5 requirements

EMC Compliance

-10 70 °C

%/°C

C/301 m

Derated above 50C

50C to 70C

Above 2250 m/7382 ft

C/1000 ft

30 10

dbA

% Relative humidity, non-condensing

Full load Half load

Parameter Function Standard Level Criteria Test

Conducted

AC input

AC input immunity

Enclosure immunity

* Note: Contact the factory for a recommended external EMI filter to meet Class B emissions **

Radiated emissions compliance is contingent upon the final system configuration.

Criteria Performance A No performance degradation B Temporary loss of function or degradation not requiring manual intervention C Temporary loss of function or degradation that may require manual intervention D Loss of function with possible permanent damage

emissions

Radiated emissions**

Voltage dips EN61000-4-11 A -30%, 10ms

Voltage surge EN61000-4-5 A 4kV, 1.2/50µs, common mode

Fast transients EN61000-4-4 A 5/50ns, 2kV (common mode)

Conducted RF fields

Radiated RF fields EN61000-4-3 A 10V/m, 80-1000MHz, 80% AM

ESD EN61000-4-2 B 4kV contact, 8kV air

EN55022, FCC part 15 EN61000-3-2

EN55022 A* 30 – 10000MHz

EN61000-4-6 A 130dBµV, 0.15-80MHz, 80% AM

ENV 50140 A

A* 0.15 – 30MHz

0 – 2 KHz

B -60%, 100ms

B -100%, 5sec

A 2kV, 1.2/50µs, differential mode

00 0 0

Data Sheet

CAR2012TE series rectifier

Input: 85Vac to 264Vac; Output: 12 Vdc @ 2000W; 3.3Vdc or 5 Vdc @ 4A

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 a signal pin (Vprog) and a PMBus command, (OPERATION) .

Unless otherwise noted, the signal pin controls the feature until the firmware command is executed. However, once the firmware command has been executed, the signal pin is ignored. In the above example, the power supply will no longer ‘listen’ to the Vprog pin if the OPERATION command has been executed.

In summary, Vprog is utilized for initialized configuration of the output voltage and to change the output voltage when PMBus is not used for that function.

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’.

Delayed overcurrent shutdown during startup: Power

supplies are programmed to stay in a constant current state for up to 20 seconds during power up. This delay has been introduced to permit the orderly application of input power to a subset of paralleled front-ends during power up. If the overload persists beyond the 20 second delay, the front-end will revert back into its programmed state of overload protection.

Unit in Power Limit or in Current Limit: When output

voltage is > 10V When output voltage is < 10VDC, if the unit is in the RESTART mode, it goes into hiccup. When the unit is ON the output LED is ON, when the unit is OFF the output LED is OFF.

When the unit is in latched shutdown the output LED is

Auto_restart: Auto-restart is the default configuration for

over-current and over-temperature shutdowns. These features are configured by the PMBus™ fault_response commands

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 within the 1 minute less than 3 shutdowns occurred then the count for latch OFF resets and the 1 minute window starts all over again.

Restart after a latchoff: PMBus™ fault_response commands

can be configured to direct the power supply to remain latched off for over_temperature and over_current.

To restart after a latch off either of five restart mechanisms are available.

1. The hardware pin Remote ON/OFF may be cycled

the Output LED will continue blinking.

OFF and then ON.

OFF.

2. The unit may be commanded to restart via i2c

through the Operation command by cycling the output OFF followed by ON.

3. Remove and reinsert the unit.

4. Turn OFF and then turn ON AC power to the unit.

5. 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 successful restart shall clear all alarm registers, set the restarted successful bit of the Status_2 register.

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 ENABLE 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.

Control Signals

MCU Device address: Address bits A2, A1, A0 configure the

specific address of the power supply. With these four bits, up to sixteen (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’. The least significant bit x (LSB) of the address byte is set to either write [0] or read [1]. A write command instructs the power supply. A read command accesses information from the power supply.

Device

MCU Cx 1 1 0 0 A2 A1 A0 R/W Broadcast

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 a ‘invalid command’ state if a ‘read’ is attempted globally. For example, changing the ‘system’ output voltage requires this capability 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

Address

Address Bit Assignments

(Most to Least Significant)

0 0 0 0 0 0

Data Sheet

CAR2012TE series rectifier

Input: 85Vac to 264Vac; Output: 12 Vdc @ 2000W; 3.3Vdc or 5 Vdc @ 4A

instruction should be executed to each power supply to verify that the command properly executed.

Voltage programming (V

signal can vary the output voltage ± 10% from 10.8Vdc to

13.2Vdc.

Hardware voltage programming controls the output voltage until a software margin command is executed. Software voltage programming (margining) permanently overrides the hardware margin setting and the power supply no longer listens to any hardware margin settings until power to the controller is interrupted, for example if input power or bias power is recycled.

When bias power is recycled to the controller the controller restarts into its default configuration, programmed to set the output as instructed by the V software commanded settings permanently override the margin setting. As an example, adding a resistor between

and Output_return is an effective way of changing the

prog

factory set point of the rectifier to whatever voltage level is desired by the user during initial start-up.

Load share (I

generated and acted upon automatically by power supplies connected in parallel. I other for power supplies, if active current share among the power supplies is desired. No resistors or capacitors should get connected to this pin.

Remote ON/OFF: Controls the presence of the main 12Vdc

output voltage. This is an open collector 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.

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.

): This is a single wire analog signal that is

): An analog voltage on this

prog

pin. Again, subsequent

prog

pins should be connected to each

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. In its default configuration, 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 activates for internal power supply failures such as over temperature or over voltage shutdown.

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.

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’.

Pull-up resistors: The clock, data, and SMBusAlert# lines do

not have any internal pull-up resistors inside the power supply. The customer is responsible for ensuring that the transmission impedance of the communications lines complies with I

Serial Clock (SCL): The clock pulses on this line are generated

by the host that initiates communications across the I²C Serial bus. This signal needs to be pulled HI externally through a resistor as necessary to ensure that rise and fall time timing and the maximum sink current is in compliance to the I²C /SMBus specifications.

Serial Data (SDA): This line is a bi-directional data line. This

signal needs to be pulled HI externally through a resistor as necessary to ensure that rise and fall time timing and the maximum sink current is in compliance to the I²C /SMBus specifications.

C and SMBus standards.

Status signals

Output current monitor (Imon): A voltage level of 3V = 167A,

or 18mV/A, proportional to the delivered output current is present on this pin.

AC 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.

SMBUSAlert#: This hardware signal pin is normally HI. When

asserted (logic LO) it signifies to the system controller that the state of the power supply has changed or that communication errors occurred.

Basic Operation

PMBus™ compliance: The power supply is fully compliant to

the Power Management Bus (PMBus™) rev1.2 requirements.

The power supply clears the STATUS and ALARM registers and the SMBAlert# signal after a successful read back of the information in these registers, with the exception of communications error alarms (PEC error, data error, command error). If the alarm state is still present the status

Data Sheet

CAR2012TE series rectifier

Input: 85Vac to 264Vac; Output: 12 Vdc @ 2000W; 3.3Vdc or 5 Vdc @ 4A

and alarm registers get reset into their alarm state, however, the SMBAlert# does not assert again.

‘Manufacturer Specific’ commands are used to support instructions that are not offered by the PMBus™ specification. All communication over the PMBus interface must support Packet Error Checking (PEC). The PMBus master must generate the correct PEC byte for all transactions, and check the PEC byte returned by the power supply.

Non-volatile memory is used to store configuration settings. Not all settings programmed into the device are automatically saved into this non-volatile memory. Only those specifically identified as capable of being stored can be saved. (see the Table of Commands for which command parameters can be saved to non-volatile storage).

Default state:

state to automatically restart after a shutdown has occurred for over current and over temperature. The default state can be reconfigured by changing non-volatile memory (Store_default_code).

Re-initialization: The I2C code is programmed to re-initialize if

no activity is detected on the bus for 5 seconds. Reinitialization is designed to guarantee that the I does not hang up the bus. Although this rate is longer than the timing requirements specified in the SMBus specification, it had to be extended in order to ensure that a re-initialization would not occur under normal transmission rates. During the few µseconds required to accomplish re-initialization the I µController may not recognize a command sent to it. (i.e. a start condition).

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.

Non-supported commands: Non supported commands are

flagged by setting the appropriate STATUS bit and issuing an SMBAlert# to the ‘host’ controller. If a non-supported read is requested the power supply will return 0x00h for data.

Data out-of-range: The power supply validates data settings

and sets the data out-of-range bit and SMBAlert# if the data is not within acceptable range.

Master/Slave: The ‘host controller’ is always the MASTER.

Power supplies are always SLAVES. SLAVES cannot initiate

Power supplies are programmed in the default

C µController

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 9 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): The power supply will not

respond to commands without the trailing PEC because the integrity of communications is compromised without packet error correction deployment.

PEC is a CRC-8 error-checking byte, based on the polynomial

+ x2 + x + 1, in compliance with PMBus™

C(x) = x requirements. The calculation is performed on 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 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.

ACK bit, the exception

Clock

Stretch

Data Sheet

CAR2012TE series rectifier

Input: 85Vac to 264Vac; Output: 12 Vdc @ 2000W; 3.3Vdc or 5 Vdc @ 4A

The signal will be triggered for any state change whether a ‘warning’ or a ‘fault’, including the following conditions;

 VIN under or over voltage  Vout under or over voltage  IOUT over current  Over Temperature  Fan Failure  Communication error  PEC error  Invalid command  Detected 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  Input power and bias power to the processor is recycled

The power supply will clear the SMBusAlert# signal (release the signal to its HI state) for operational alarms (but not communications alarms that require a clear_faults signal from the controller that it received the alert) upon the following events:

 The main output recycled (turned OFF and then ON) via

the Remote_ON/OFF or INTERLOCK signal pins

 The main output recycled (turned OFF and then ON) by

the OPERATION command

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

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:

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

8 1 8 1 8 1 1

Low data byte A High data byte A PEC A P

Up to two bytes of data may follow a READ

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 communications: When writing or reading more than

two bytes of data at a time BLOCK instructions for WRITE and READ commands are used instead of the Standard Instructions above to write or read any number of bytes greater than two.

Block write format:

1 S Slave address Wr A Command Code A

Byte count = N A Data 1 A Data 2 A

7 1 1 8 1

8 1 8 1 8 1

8 1 8 1 8 1 1

………. A Data N ≤ 48 A PEC A P

Block read format:

1 S Slave address Wr A Command Code A

7 1 1 8 1

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 N ≤ 48 A PEC NoAck P

An example of the block_read instruction is the Read_std_parameters (D0h) command. This ‘manufacturer specific’ command returns STATUS and ALARM register data, output voltage, output current, and internal temperature in a single read string.

1 8 1 S Slave address Wr A Command Code A

1 8 1 8 1

Sr Slave address Rd A Byte count = 11 A

8 1 8 1 8 1

Status-2 A Status-1 A Alarm-2 A

8 1 8 1 8 1

Alarm-1 A Voltage LSB A Voltage MSB A

8 1 8 1

Current LSB A Current MSB A

8 1 8 1 8 1 1

Temperature LSB A Temperature MSB A PEC NA 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. The value of the exponent for output voltage functions is listed in the Vout_mode command.

8 1

CAR2012TE series rectifier

Input: 85Vac to 264Vac; Output: 12 Vdc @ 2000W; 3.3Vdc or 5 Vdc @ 4A

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:

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

Standard features

Command Comments

ON_OFF_CONFIG Both the CNTL pin, enabling or disabling

Vout_OV_fault_response Only latched (0x80) is supported CAPABILITY 400KHz, SMBALERT PMBus revision 1.2

the output, and the OPERATION command are supported. Other options are not supported.

PMBusTM Command set:

Non-supported commands are annunciated.

Command

Operation 0x01 1 Output ON/OFF ON_OFF_config 0x02 1 09, output ON default Clear_faults 0x03 0 Clear Status Write_protect 0x10 1 Write control

Restore_default_all 0x12 0 Reset defaults Store_default_code 0x13 1 Change default state

Vout_mode 0x20 1 Vout constants Vout_command 0x21 2 Set Vout Fan_command_1 0x3B 2 Set fan speed in % Vout_OV_fault_limit 0x40 2 Set OV fault limit Vout_OV_warn_limit 0x42 2 Set OV warn limit Iout_OC_fault_limit 0x46 2 Iout_OC_fault_response4

Iout_OC_warn_limit 0x4A 2 OT_fault_limit 0x4F 2 OT_fault_response5 0x50 1 OT_warn_limit 0x51 2

Status_byte 0x78 1 Status_word 0x79 2 Status_Vout 0x7A 1 Status_Iout 0x7B 1 Status_input 0x7C 1 Status_temperature 0x7D 1 Status_CML 0x7E 1 Status_fan_1_2 0x81 1

Read_Iin 0x89 2

Only latched (0xC0) or hiccup (0xF8) are supported

Only latched (0x80) or restart (0xC0) are supported

Hex

Data

Code

Byte Function

0x47 1

Latch or hiccup Set OC warn limit

Latch or hiccup Set OT warn limit

Command

Read_Vout 0x8B 2 Read_Iout 0x8C 2 Read_temperature 0x8D 2 Read_fan_speed_1 0x90 2 Read_fan_speed_2 0x91 2 Read_Pin 0x97 2 Mfr_ID 0x99 5 Mfr_model 0x9A 16

Mfr_serial 0x9E 15 Read_Std_Parameters 0xD0 10 Read_Status_State 0xD1 2 Read_Alarm_State 0xD2 2 Read_fan_speed 0xD3 4 Read_Input_string 0xD4 2 Read_mfr_rev 0xD5 4 Read_Run_Timer 0xD6 3

EEPROM_record 0xD9 64

Test Function 0xDF 1

Code

Command Descriptions

Operation (0x01) : 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

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 (0x03): 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 (0x10): 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 default setting of this register is disable_all_writes except write_protect 0x80h.

Enable all writes 00 Disable all writes except write_protect 80 Disable all writes except write_protect and OPERATION

Restore_Default_All (0x12): Restores all register values and

responses to the default parameters set in the power supply.

DATA BYTE

FUNCTION

Data Sheet

Hex

Data Byte Function

CAR2012TEXXXZ01A 01KZ51018193xxx

DATA BYTE

Data Sheet

CAR2012TE series rectifier

Input: 85Vac to 264Vac; Output: 12 Vdc @ 2000W; 3.3Vdc or 5 Vdc @ 4A

Store_default_code (0x13): Default values desired to be

overwritten must be executed one at a time. In this fashion some protection is offered to ensure that only those values that are desired to be changed are in fact changed.

Vout_mode (0x20): This is a ‘read only’ register. The upper

three bits specify the supported data format, in this case Linear mode. The lower five bits specify the exponent of the data being read back in two’s complement binary format for output voltage related commands, such as Vout_command. These commands have a 16 bit mantissa. The exponent is fixed by the module and is returned by this command.

Mode Bits [7:5] Bits [4:0] (exponent)

Linear 000b xxxxxb

Vout_Command (0x21) : 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 I 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.

Voltage margin range: 10.8Vdc – 13.2 Vdc.

Fan_command_1 (0x3B): This command instructs the power

supply to increase the speed of the fan. The transmitted data byte represents the hex equivalent of the duty cycle in percentage, i.e. 100% = 0 x 64h. The command can only increase fan speed, it cannot instruct the power supply to reduce the fan speed below what the power supply requires for internal control. Sending 00h tells the power supply to revert back to its internal control.

Vout_OV_fault_limit (0x40): Sets the value at which the main

output voltage will shut down. The default OV_fault value is set at 60Vdc. This level can be permanently changed and stored in non-volatile memory.

Vout_OV_warn_limit (0x42): 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. This level can be permanently changed and stored in non-volatile memory.

Iout_OC_fault_limit (0x46): Sets the value at which the power

supply will shut down. The default OC_fault_limit is 68Adc at high_line and 30A at low_line. (The value is contingent on whether the power supply operates in the low_line or high_line mode). This level can be permanently changed and stored in non-volatile memory. Which level is changed is contingent on the input voltage applied to the power supply at the time the change takes place.

Iout_OC_fault_response (0x47): Sets the response if the output overload exceeds the OC_Fault_limit value. The default OC_fault_response is hiccup (0xF8). The only two allowable states are latched (0xC0) or hiccup. The default response state can be permanently changed and stored in non-volatile memory. The response is the same for both low_line and high_line operations.

Iout_OC_warn_limit (0x4A): Sets the value at which the

power supply issues a warning that the output current is getting too close to the shutdown level. The default OC_Warn_limit is set to 64.8A at high_line and 27.8A at low_line. This level can be permanently changed and stored in non-volatile memory. Which level is changed is contingent on the input voltage applied to the power supply at the time the change takes place.

OT_fault_limit (0x4F ): Sets the temperature value at which the power supply shuts down. The default OT_fault_limit is set at TBDC. This level can be permanently changed and stored in non-volatile memory.

OT_fault_response (0x50): Sets the response if the output

overtemperature exceeds the OT_Fault_limit value. The default OT_fault_response is hiccup (0xC0). The only two allowable states are latched (0x80) or hiccup. The default response state can be permanently changed and stored in non-volatile memory.

OT_warn_limit (0x51): Sets the value at which the power

supply issues a warning that internal temperatures are getting too close to the shutdown level. The default OT_Warn_limit is set to TBDC. This level can be permanently changed and stored in non-volatile memory.

Data Sheet

CAR2012TE series rectifier

Input: 85Vac to 264Vac; Output: 12 Vdc @ 2000W; 3.3Vdc or 5 Vdc @ 4A

STATUS_BYTE (0x78) : Returns one byte of information with a

summary of the most critical device faults.

Bit

Position

7 Busy 0 6 OFF 0 5 VOUT Overvoltage 0 4 IOUT Overcurrent 0 3 VIN Undervoltage 0 2 Temperature 0 1 CML (Comm. Memory Fault) 0 0 None of the above 0

STATUS_WORD (0x79): Returns status_byte as the low byte

and the following high_byte.

Bit

Position

7 VOUT fault or warning 0 6 IOUT fault or warning 0 5 INPUT 0 4 MFR SPECIFIC 0 3 nPOWER_GOOD 0 2 FANS 0 1 OTHER 0 0 UNKNOWN 0

STATUS_VOUT (0x7A): Returns one byte of information of

output voltage related faults.

Bit

Position

7 VOUT OV Fault 0 6 VOUT_OV_WARNING 0 5 VOUT_UV_WARNING 0 4 VOUT UV Fault 0

3 - 0 Not supported 0

STATUS_IOUT (0x7B): Returns one byte of information of

output current related faults.

Bit

Position

7 IOUT OC Fault 0 6 Not supported 0 5 IOUT OC Warning 0

4- 0 Not supported 0

STATUS_INPUT (0x7C): Returns one byte of information of

input voltage related faults.

Bit

Position

7 VIN_OV_Fault 0 6 VIN_OV_Warning 0 5 VIN_UV_ Warning 0 4 VIN_UV_Fault 0

3 - 0 Not supported 0

Flag

Default

Value

Default

Value

Default

Value

Default

Value

Default

Value

STATUS_TEMPERATURE (0x7D): Returns one byte of

information of temperature related faults.

Bit

Position

7 OT Fault 0 6 OT Warning 0

5 - 0 Not supported 0

STATUS_CML (0x7E): Returns one byte of information of

communication related faults.

Bit

Position

7 Invalid/Unsupported Command 0 6 Invalid/Unsupported Data 0 5 Packet Error Check Failed 0

4 - 2 Not supported 0

1 Other Communication Fault 0 0 Not supported 0

STATUS_FAN_1_2 (0x81) : Returns one byte of information

with a summary of the most critical device faults.

Bit

Position

7 Fan 1 Fault 0 6 Fan 2 Fault 0

5 - 4 Not supported 0

3 Fan 1 speed overwritten 0 2 Fan 2 speed overwritten 0

1 - 0 Not supported 0

Flag

Read back Descriptions

Single parameter read back: Functions can be read back one

at a time using the read_word_protocol with PEC. A command is first sent out notifying the slave what function is to be read back followed by the data transfer.

Analog data is always transmitted LSB followed by MSB. A NA following the PEC byte signifies that the transmission is complete and is being terminated by the ‘host’.

1 8 1 8 1 S Slave address Wr A Command Code A

1 8 1

Sr Slave address Rd A

Read_fan_speed 1 & 2 (0x90, 0x91): Reading the fan speed is

in Linear Mode returning the RPM value of the fan.

8 1 8 1 8 1 1

LSB A MSB A PEC NA P

Default

Value

Default

Value

Default

Value

Data Sheet

CAR2012TE series rectifier

Input: 85Vac to 264Vac; Output: 12 Vdc @ 2000W; 3.3Vdc or 5 Vdc @ 4A

Read_FRU_ID (0x99,0x9A, 0x9E): Returns FRU information

1 8 1 8 1 S Slave address Wr A Command 0x9x A

1 8 1 8 1

Sr Slave address Rd A Byte count = x A

8 1 8 1 8 1 8 1 1

high byte A Byte… A low byte A PEC NA P

Mfr_ID (0x99): Manufacturer in ASCII – 5 characters

maximum, General Electric – Critical Power represented as: GE-CP

Mfr_MODEL (0x9A): Manufacturer model-number in ASCII –

16 characters, for this unit: CAR2012TEBXXZ01A

Mfr_serial (0x9E): Product serial number includes the

manufacturing date, manufacturing location in up to 15 characters. For example:

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.

Manufacturer-Specific PMBus

Many of the manufacturer-specific commands read back more than two bytes. If more than two bytes of data are returned, the standard SMBus process, the Master issues a Write command followed by the data transfer from the power supply. The first byte of the Block Read data field sends back in hex format the number of data bytes, exclusive of the PEC number, that follows. Analog data is always transmitted LSB followed by MSB. A No-ack following the PEC byte signifies that the transmission is complete and is being terminated by the ‘host’.

Mfr_Specific Status and alarm registers: The content and

partitioning of these registers is significantly different than the standard register set in the PMBus™ specification. More information is provided by these registers and they are either accessed rapidly, at once, using the ‘multi parameter’ read back scheme of this document, or in batches of two STATUS and two ALARM registers.

Block read is utilized. In this

Commands

Read_std_parameters (0xD0) : This ‘manufacturer specific’

command is the basic read back returning STATUS and ALARM register data, output voltage, output current, and internal temperature data in a single read.

1 8 1 8 1 S Slave address Wr A Command Code A

1 8 1 8 1

Sr Slave address Rd A Byte count = 10 A

8 1 8 1 8 1

Status-2 A Status-1 A Alarm-2 A

8 1 8 1 8 1

Alarm-1 A Voltage LSB A Voltage MSB A

8 1 8 1

Current LSB A Current MSB A

8 1 8 1 8 1 1

Temperature LSB A Temperature MSB A PEC NA P

Read_Status_state (0xD1): This command returns the two

STATUS register values using the standard ‘read’ format.

Status-2

Bit

Position

7 PEC Error 0 6 5 Invalid_Instruction 0 4 Power_Capacity [HL = 1] x 3 Isolation test failed 0 2 Restarted_OK 0 1 Data out_of_range 0 0 Remote ON [logic HI = 1] x

Isolation test failed: The ‘system controller’ has to determine that sufficient capacity exists in the system to take a power supply ‘off line’ in order to test its isolation capability. Since the power supply cannot determine whether sufficient redundancy is available, the results of this test are provided, but the ‘internal fault’ flag is not set.

Status-1

Bit

Position

7 X 0 6 Isolation_Test_OK 0 5 Internal_Fault 0 4 Shutdown 0 3 Service LED ON 0 2 External_Fault 0 1 LEDs_Test_ON 0 0 Output ON x

Flag

Will restart 0

Flag

Default

Value

Default

Value

Data Sheet

CAR2012TE series rectifier

Input: 85Vac to 264Vac; Output: 12 Vdc @ 2000W; 3.3Vdc or 5 Vdc @ 4A

Read_Alarm_state (0xD2): This command returns the two

ALARM register values using the standard ‘read’ format.

Alarm-2

Bit

Position

Flag

Default

Value

7 FAN_Fault 0 6 No_Primary 0 5 Primary_OT 0 4 DC/DC_OT 0 3 Vo lower than BUS 0 2 Thermal sensor filed 0 1 Stby_out_of_limits 0 0 Power_Delivery 0

Power Delivery: The power supply compares its internal sourced current to the current requested by the current share pin. If the difference is > 10A, a fault is issued.

Alarm-1

Bit

Position

Flag

Default

Value

7 POWER LIMIT 0 6 PRIMARY Fault 0 5 OT_Shutdown 0 4 OT_Warning 0 3 IN OVERCURRENT 0 2 OV_Shutdown 0 1 VOUT_out_of_limits 0 0 VIN_out_of_limits 0

Over temperature warning: This flag is set approximately 5C prior to the commencement of an over temperature shutdown.

Read_Fan_speed (0xD3) : Returns the commanded speed in

percent and the measured speed in RPM. Up to 3 fans are supported. If a fan does not exist, or if the command is not supported the unit return 0x00.

1 8 1 8 1 S Slave address Wr A Command 0xE1 A

1 8 1 8 1

Sr Slave address Rd A Byte count = 4 A

8 1 8 1 8 1 8 1

Adjustment % A Fan-1 A Fan-2 A Fan-3 A

8 1 1

PEC NA P

Read_input_string (0xD4): Reads back the input voltage and

input power consumed by the power supply.

1 7 1 1 8 S Slave address Wr A Command Code 0xDB

1 1 7 1 1 8 1 A Sr Slave Address Rd A Byte Count = 5 A

8 1 8 1

Voltage - LSB A Voltage - MSB A

8 1

Power - LSB A Power - MSB A PEC No-ack P

Read_mfr_rev [0xD5]: A total of 4 bytes are returned. 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

1 7 1 1 8 1 S Slave address Wr A Command Code 0xDD A

1 1 7 1 1 8 1 A Sr Slave Address Rd A Byte Count = 4 A

8 1

Series A Hardware rev A Primary µC A

Secondary µC A PEC No-ack P

For example; the read returns one byte for each device (i.e. 0 x 10102114 ). The sequence is series, hardware rev, DSP, and

C micro. 0x10 in the first byte indicates series 1.0. The

I second number indicates that the hardware rev is 1.0. The third number 21 for the DSP indicates revision number 14 for the i2c

Read_run_timer (0xD6): This command reads back the

recorded operational ON state of the power supply in hours. The operational ON state is accumulated from the time the power supply is initially programmed at the factory. The power supply is in the operational ON state both when in standby and when it delivers main output power.

Recorded capacity is approximately 10 years of operational state.

1 7 1 1 8 1 S Slave address Wr A Command Code 0xDC A

1 7 1 1 8 1

Sr Slave Address Rd A Byte count = 4 A

8 1 8 1 8 1

Time - LSB A Time A Time - MSB A

8 1 1

PEC No-ack P

8 1 8 1

8 1 8 1 1

micro indicates revision 1.4.

8 1 8 1 1

2.1, and the

Data Sheet

CAR2012TE series rectifier

Input: 85Vac to 264Vac; Output: 12 Vdc @ 2000W; 3.3Vdc or 5 Vdc @ 4A

EEPROM record (0xD9): 64 bytes of EEPROM memory is

available for customer records such as an additional FRU_ID. Block write is utilized since more than 2 data bytes are feasible. The first byte will be written into the pointed to memory location and each subsequent byte is incremented by a single memory location.

The standard protocol to access these records takes the form;

1 8 1 8 1 S Slave address Wr A Command 0xD9 A

8 1 8 1

Memory location A Byte count ≤ 32 A

8 1 8 1 8 1 1

Byte 1 A ………………….. Byte ≤ 32 A PEC A P

The highest memory location is address 0x64b.

Test Function (0xDF): This command can be used to exercise

the LEDs of the power supply or the output Or’ing feature of the power supply.

Bit Function State

0 LED test 1:ON, 0:OFF 1 reserved 2 reserved 3 reserved 4 Or’ing test 1:execute, 0:idle 5 reserved 6 reserved 7 reserved

Setting bit 0 of the data byte to 1 instructs the power supply to execute an LED test. During this test both LEDs are turned ON and OFF every 0.5 second. The tri-state LED should be exercised sequentially in its green, orange, and red state. The test should continue until bit 0 of the data byte is set to 0 in a subsequent instruction.

Setting bit 5 of the data byte to 1 instructs the power supply to execute once an output Or’ing test in applications where multiple paralleled power supplies are utilized. The host should verify that N+1 redundancy is established. If N+1 redundancy is not established the test can fail. Only one power supply should be tested at a time.

Verifying test completion should be delayed for approximately 30 seconds to allow the power supply sufficient time to properly execute the test.

During the test the power supply will lower its output voltage and measure the difference between the internal and external sides of the Or’ing function. This measurement will determine whether the Or’ing function is working properly.

The system controller must conclude that sufficient power capacity exists to deliver output power to the system while this unit is purposely taken off the bus by lowering its output voltage. Since validity of the test is system control dependent, the power supply does not conclude whether it is properly

functioning. The system controller must determine whether the function is working properly.

Valid data bytes are: 0x00, 0x01,0x10,0x11

Fault management

The power supply recognizes that certain transitionary states can occur before a final state is reached. The STATUS and ALARM registers will not be frozen into a notification state until the final state is reached. Once a final state is reached the SMBAlert# signal is set and the STATUS and ALARM registers will not get reinstated until a clear_faults is issued by the master. The only exception is that additional state changes may be added to the original list if further changes are noted.

The power supply differentiates between internal faults that are within the power supply and external faults that the power supply protects itself from, such as overload or input voltage out of limits. The FAULT LED, FAULT PIN or i2c alarm is not asserted for EXTERNAL FAULTS. Every attempt is made to annunciate External Faults. Some of these annunciations can be observed by looking at the input LEDs. These fault categorizations are predictive in nature and therefore there is a likelihood that a categorization may not have been made correctly.

Input voltage out of range:

blinking as long as sufficient power is available to power the LED. If the input voltage is completely gone the Input LED is OFF.

State change definition

A state_change is an indication that an event has occurred that the MASTER should be aware of. The following events shall trigger a state_change;

 Initial power-up of the system when AC gets turned ON .

This is the indication from the power supply that it has been turned ON.

 Whenever the power supply gets hot-plugged into a

working system. This is the indicator to the system (MASTER) that a new power supply is on line.

Any changes in the bit patterns of the STATUS and



ALARM registers are a STATUS change which triggers the

SMBALERT# flag. Note that a host-issued command such as turning the output OFF will not trigger an SMBAlert# even though the STATUS registers will change to indicate the latest state of the power supply.

Hot plug procedures

Careful system control is recommended when hot plugging a power supply into a live system. It takes about 15 seconds for a power supply to configure its address on the bus based on the analog voltage levels present on the backplane. If communications are not stopped during this interval, multiple power supplies may respond to specific instructions because the address of the hot plugged power supply always defaults

The Input LED will continue

Data Sheet

CAR2012TE series rectifier

Input: 85Vac to 264Vac; Output: 12 Vdc @ 2000W; 3.3Vdc or 5 Vdc @ 4A

to xxxx000 (depending on which device is being addressed within the power supply) until the power supply configures its address. The recommended procedure for hot plug is the following: The system controller should poll the module_present signal to verify when a power supply is inserted into the system. When a new module is detected the system controller should cease any communications with the power system for 15 seconds. At the end of the time out all communications can resume. Note that although hot-plug should not affect ongoing communications, if a discrepancy should arise the error should get picked up by the PEC calculation. Ofcourse the system controller could always use the module_present signal as an indicator to ignore communications that are currently taking place.

Failure predictions

Alarm warnings that do not cause a shutdown are indicators of potential future failures of the power supply. For example, if a thermal sensor failed, a warning is issued but an immediate shutdown of the power supply is not warranted.

Another example of potential predictive failure mechanisms can be derived from information such as fan speed when multiple fans are used in the same power supply. If the speed of the fans varies by more than 20% from each other, this is an indication of an impending fan wear out.

The goal is to identify problems early before a protective shutdown would occur that would take the power supply out of service.

Information only alarms: The following alarms are for

information only, they do not cause a shutdown

Over temperature warning

out-of-limits (above 36Vdc)

out

Output voltage lower than bus

Unit in Power Limit

Thermal sensor failed

Or’ing (Isolation) test failure

Power delivery

Stby out of limits

Communication errors

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 dual-state LED. When GREEN there are no faults and DC output is present. When ‘blinking’ a fault condition exists but the power supply may still provide some output power. When RED , a fault condition exists and the power supply has been shut down, it does not provide any output power.

Alarm Table

LED Indicator Monitoring Signals

LED1

Test Condition

1 Normal Operation 2 Out of range INPUT 3 No Input OFF OFF High Low Low High 4 OVP 5 Over Current 6 Over Temp Warning 7 Over Temp Fault 8 Remote ON 9 Remote OFF

Notes: Test condition #2 and #3 had 2 modules plug in. One module is running and the other one is with no/low AC.

Test condition #5, The DC_OK signal responds to two independent conditions. It can activate either for loss of output because of an overload

condition, or it can activate because of the impending loss of output voltage because input power has been interrupted. In case of an overload condition, depending on how deep is the overload, sufficient holdup may not be present to provide the required delay prior to the regulation going below 10.8 V

Blinking of the overload LED will not occur until the output voltage decayed about 0.3V from its regulation point. During hiccup, blinking occurs only during the ON-time state.

? – module output could be either ON or OFF dependent on output loading and internal capability.

Blinking frequency: 0.5 seconds ON, 0.5 seconds OFF.

INPUT OK

Green Green

Blinking

Green Red Green Blinking Green Blinking Orange Green Red Green Green Green

Tri-Color LED2

Temp OK/DC OK / Fault

? High ? Pulsing High

OFF High Low High High

FAULT DC OK INPUT OK TEMP OK

High High High High

Low Low High High High Low High High High

Low Low High Low High High High High

High High Pulsing

Data Sheet

CAR2012TE series rectifier

Input: 85Vac to 264Vac; Output: 12 Vdc @ 2000W; 3.3Vdc or 5 Vdc @ 4A

Outline Drawing

Data Sheet

CAR2012TE series rectifier

Input: 85Vac to 264Vac; Output: 12 Vdc @ 2000W; 3.3Vdc or 5 Vdc @ 4A

Connector Pin Assignments

Input Connector: IEC320, C20;

mating connector: IEC320, C19 type

Output Connector: FCI Berg P/N 10106124-8006002LF or equivalent

Mating connector: FCI berg P/N

Short signal pins: E,F,G,H Long signal pins: R,S,T,U

Pin Function Pin Function Pin Function Pin Function

A1 Vstb B1 Fault C1 IShare D1 VProg

A2 Vstb [3.3V] Return B2 I Monitor (IMON) C2 N/A D2 OVP Test Point

A3 Vstb Return B3 Interlock C3 Over Temp Warning D3 Remote ON/OFF

A4 N/A B4 PS Present C4 I2C 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 – P4 Output Return P5– P8 +12Vout

Data Sheet

CAR2012TE series rectifier

Input: 85Vac to 264Vac; Output: 12 Vdc @ 2000W; 3.3Vdc or 5 Vdc @ 4A

Ordering Information

Please contact your GE Sales Representative for pricing, availability and optional features.

PRODUCT DESCRIPTION PART NUMBER

2000W Front-End +12Vout , 3.3Vsb, face plate, PMBus interface, RoHS 6 of 6 CAR2012TEBXXZ01A

2000W Front-End +12Vout , 5Vsb, face plate, PMBus interface, RoHS 6 of 6 CAR2012TEBX5Z01A

PART NUMBER DEFINITION GUIDE EXAMPLE

CAR2012TExxxZ 01A

Power 20 = 2000W

Output voltage 12 = 12Vdc

Options B – bezel C – i2c option R – reverse airflow

A – Standard

model

RTM

Vsb – 3 or 5 Type FP – AC; V TN – AC; V

DC - DC TE – AC; high efficiency

positive

negative

RoHS Blank – non compliant Y – 5 of 6 compliant Z – 6 of 6 compliant

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

GE Industrial Solutions CAR2012TE User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual