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ge preliminary data sheet february 7, 2014 ?2013 general electric company. all rights reserved. car2512te front-end input: 90v ac to 264v ac ; output: 12v dc @ 2500w; 3.3/5v dc standby @ 15w features ? efficiency meets 80plus ?platinum? requirements ? universal input with pfc ? constant power characteristic ? 2 front panel leds: 1-input;2-[dc_ok, fault, warning] ? remote on/off control of the 12vdc output ? remote sense on the 12vdc output ? no minimum load requirements ? active load sharing (single wire) ? hot plug-ability ? standby orderable either as 3.3vdc or 5vdc ? auto recoverable oc & ot protection ? operating temperature: -10 - 70 ? c (de-rated above 50 ? c) ? digital status & control: i 2 c and pmbus serial bus ? en/iec/ul60950-1 2 nd edition; ul, csa, vde , and ccc ? emi: class a fcc docket 20780 part 15, en55022 ? 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 description the car2512te front-end provides highly efficient isolat ed power from worldwide in put mains in a compact 1u industry standard form factor in an unprecedented power density of 25w/in 3 . ideal for applications where mid to light load efficiency is of key importance. this front-end is complemented by the car2512dc dc/dc converter designed to convert 48/60vdc power of telecom central offices. this pl ug and play approach offers rapid system reconfiguration by simply replacing the power supply. the high-density, front-to-back airflow is designed for minimal space utilization and is highly expandable for future growth. the industry standard pmbus compliant i 2 c communications buss offers a full range of control and monitoring capabilities. the smbalert signal pin alerts cust omers automatically of any st ate 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 requir ed 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)
ge preliminary data sheet car2512te front-end input: 90v ac to 264v ac ; output: 12 v dc @ 2500w; 3.3/5v dc standby @ 15w february 7, 2014 ?2013 general elec tric company. all rights reserved. page 2 absolute maximum ratings stresses in excess of the absolute maximum ratings can cause pe rmanent damage to the device. these are absolute stress ratings only, functional operation of the device is not implied at these or any other cond itions 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 v in 0 264 v ac operating ambient temperature t a -10 70 1 c storage temperature t stg -40 85 c i/o isolation voltage to frame (100% factory hi-pot tested) 2121 v dc 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 v in 90 115/230 264 v ac frequency range (etsi 300-132-1 recommendation) f in 47 50/60 63 hz main output turn_off v in 80 v ac maximum input current (v out = v o, set , i out =i o, max ) v in = 100v ac i in 14 16 a ac v in = 180v ac cold start inrush current i in 40 a peak (excluding x-caps, 25 ? c, <10ms, per etsi 300-132) efficiency (t amb =25 ? c, v in = hl, v o = 12v dc ), 100% load ? 115v / 230v 89 / 91 89 / 94 80 / 90 % 50% load 20% load power factor (v in =230v ac , i out =i o, max ) pf 0.99 holdup time 2 (v out = 12v dc , tamb 25 ? c, i out =i o, max ) v in = 230v ac v in = 100v ac t 12 15 ms early warning prior to output falling below 10.8vdc (dc_ok signal goes lo) 2 ms ride through t 10 ms leakage current (v in = 250v ac , fin = 60hz) i in 3 ma isolation input/output 3000 v ac input/frame 1500 v ac output/frame 100 v dc 12v dc main output parameter symbol min typ max unit output power hl / ll [180 ? 264 / 90-132 v ac ] v dc 12v dc w 0 - 2500/1200 w v dc = 10.8v dc 0 - 2246/1078 w set point v out 11.9 12.00 12.1 v dc overall regulation (load, temperature, aging) -3 +3 % ripple and noise 3 120 mv p-p turn-on overshoot +3 % turn-on delay t 2 3 sec 1 derated above 50 ? c at 2.5%/ ? c 2 12v output can decay down to 10.8v 3 measured across a 10f tantalum and a 0.1f ceramic capacitors in parallel. 20mhz bandwidth
ge preliminary data sheet car2512te front-end input: 90v ac to 264v ac ; output: 12 v dc @ 2500w; 3.3/5v dc standby @ 15w february 7, 2014 ?2013 general electric company. all rights reserved. page 3 12v dc main output (continued) parameter symbol min typ max unit remote on/off delay time 40 ms turn-on rise time (10 ? 90% of v out ) 50 ms transient response 50% step [10%-60%, 50% - 100%] (di/dt ? 1a/s, recovery 300s) v out -5 +5 %v out programmable range (hardware & software) 10.8 13.2 v dc overvoltage protection, latched (recovery by cycling off/on via hardware or software) 13.8 14.8 15.8 v dc output current v in = hl v in = ll i out 0 208 100 a dc current limit, hiccup (programmable level) hl / ll 105/105 130/140 % of fl active current share (i out 20% of fl) -5 +5 % of fl standby output parameter symbol min typ max 3.3 / 5 / 12 unit set point v out 3.3 / 5.0 / 12 v dc factory set point accuracy (25 ? c, 50% load) -3 +3 % overall regulation (line, load, temperature, aging) -5 +5 % ripple and noise 50 / 50 / 120 mv p-p output power i out 0 15 w dc overload protection - overvoltage protection 110 % isolation output/frame 100 v dc general specifications parameter min typ max units notes reliability 400,000 hrs full load, 25 ? c ; mtbf per sr232 reliability protection for electronic equipment, method i, case iii, service life 10 yrs full load, excluding fans weight 5.2 /2.36 lbs/kg feature specifications unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. see feature descriptions for additional information. parameter symbol min typ max unit remote on/off (pulled up internally within the module to v stdby ) logic high (module on) 2.5 5 v dc logic low (module off, internal resistance 9k ? ) i il ? ? 1 ma v il 0 ? 0.8 v dc
ge preliminary data sheet car2512te front-end input: 90v ac to 264v ac ; output: 12 v dc @ 2500w; 3.3/5v dc standby @ 15w february 7, 2014 ?2013 general elec tric company. all rights reserved. page 4 feature specifications (continued) parameter symbol min typ max unit output voltage programming (vprog) equation: vout = 10.8 + (vprog * 0.96) vprog range v prog 0 ? 2.5 v dc programmed output voltage range v out 10.8 ? 13.2 v dc voltage adjustment resolution (8-bit a/d) v out ? 10 ? mv dc output configured to 13.2v dc v prog 2.5 3.0 v dc output configured to the 12v dc set-point v prog 3.0 ? ? v dc interlock [short pin controlling presence of the 12v dc output] 12v output off v i 2.5 ? 5 v dc 12v output on v i 0 ? 0.8 v dc input(ac)_ok (pulled up internally via 10k ? to 3.3v) logic high (input within normal range; v in 80v ac ) i oh ? 20 a v oh 2.1 ? 3.5 v dc logic low (input out of range; v in 75v ac ) i ol ? ? 20 ma v ol 0 ? 0.4 v dc dc_ok (pulled up internally via 10k ? to 3.3v) logic high (output voltage is present; v out 10.7v dc ) i oh ? 20 a v oh 2.1 ? 3.5 v dc logic low (output voltage is not present; v out 10.2v dc , and i ol ? ? 20 ma early_warning if output is about to go out of regulation) v ol 0 ? 0.4 v dc over_temperature_warning# (pulled internally via 10k ? to 3.3v) logic high (temperature within normal range) i oh ? 20 a v oh 2.1 ? 3.5 v dc logic low (temperature is too high) i ol ? ? 20 ma v ol 0 ? 0.4 v dc delayed shutdown after logic low transition tdelay 10 sec fault# (pulled up internally via 10k ? to 3.3v) logic high (no fault is present) i oh ? 20 a v oh 2.1 ? 3.5 v dc logic low (fault is present) i ol ? ? 20 ma v ol 0 ? 0.4 v dc ps_present# logic high (power supply is not plugged in) logic low (power supply is present) v il 0 ? 0.4 v dc
ge preliminary data sheet car2512te front-end input: 90v ac to 264v ac ; output: 12 v dc @ 2500w; 3.3/5v dc standby @ 15w february 7, 2014 ?2013 general electric company. all rights reserved. page 5 feature specifications (continued) parameter symbol min typ max unit smbalert# (interrupt) (pulled up internally via 10k ? to 3.3v) it ) logic high (no alert - normal) v oh 2.1 ? 3.5 v dc logic low (alert is set) i ol ? ? 20 ma v ol 0 ? 0.4 v dc current monitor (imon) resolution 15 mv/a measurement range i out 0 208 a dc measurement accuracy, load > 25% of fl, v o = 12v dc -5 +5 % of fl analog output range v mon 0 3.3 v dc sourced output current i out 5 ma dc digital interface specifications parameter conditions symbol min typ max unit pmbus signal interface characteristics input logic high voltage (clk, data) v ih 2.1 3.6 v input logic low voltage (clk, data) v il 0 0.8 v input high sourced current (clk, data) i ih 0 10 a output low sink voltage (clk, data, smbalert#) i out =3.5ma v ol 0.4 v output low sink current (clk, data, smbalert#) i ol 3.5 ma output high open drain leakage current (clk,data, smbalert#) v out =3.6v i oh 0 10 a pmbus operating frequency range slave mode f pmb 10 400 khz digital interface specifications (continued) parameter type symbol min typ max unit measurement system characteristics clock stretching t stretch 25 ms i out measurement range linear i rng 0 210 a i out measurement accuracy 25c i acc -5 +5 % v out measurement range linear v out(rng) 0 14 v dc v out measurement accuracy v out(acc) -5 +5 % temp measurement range linear temp (rng) 0 120 ? c temp measurement accuracy 4 temp (acc) -5 +5 % i in measurement range linear i in(rng) 0 40 a ac i in measurement accuracy i in(acc) -5 +5 % v in measurement range linear v in(rng) 0 300 v ac v in measurement accuracy v in(acc) -5 +5 % p in measurement range linear p n(rng) 0 3000 w p in measurement accuracy p in(acc) -5 +5 % fan speed measurement range linear 0 30k rpm fan speed measurement accuracy -10 10 % fan speed control range linear 0 100 % 4 temperature accuracy reduces non- linearly with decrea sing temperature
ge preliminary data sheet car2512te front-end input: 90v ac to 264v ac ; output: 12 v dc @ 2500w; 3.3/5v dc standby @ 15w february 7, 2014 ?2013 general elec tric company. all rights reserved. page 6 environmental specifications parameter min typ max units notes ambient temperature -10 70 5 c derated above 50 ? c storage temperature -40 85 c operating altitude 2250/7382 m/ft meet ccc at 5000m non-operating altitude 8200/30k m / ft power derating with temperature 2.5 %/c 50 ? c to 70 ? c(60 ? c max where tuv/vde is required) 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 2.4 grms meet ipc-9592b class ii emc compliance parameter criteria standard level test ac input conducted emissions en55022, fcc docket 20780 part 15, subpart j en61000-3-2( line harmonics) a 0.15 ? 30mhz 0 ? 2 khz radiated emissions** en55022 a 30m ? 1ghz ac input immunity voltage dips en61000-4-11 b -30%, 10ms b -60%, 100ms b -100%, 5sec voltage surge en61000-4-5 a 4kv, 1.2/50s, common mode a 2kv, 1.2/50s, differential mode fast transients en61000-4-4 b 5/50ns, 2kv (common mode) enclosure immunity conducted rf fields en61000-4-6 a 130dbv, 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 3 6kv contact, 8kv air 5 60 ? c max where tuv/vde is required
ge preliminary data sheet car2512te front-end input: 90v ac to 264v ac ; output: 12 v dc @ 2500w; 3.3/5v dc standby @ 15w february 7, 2014 ?2012 general elec tric 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 > 3v dc or a no connect. when the programming signal via vprog is either a no connect or > 3v dc , it is ignored, the output voltage is set at its nominal 12v dc 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 ?v stdby return? and ?signal return?. reset the soft start circuitry of the individual power supplies. auto_restart: auto-restart is the default configuration for recovering from over-current and over-temperature shutdowns. an overvoltage shutdown is followed by three attempted restarts, each restart delayed 1 second, within a 1 minute window. if within the 1 minute window three attempted restarts failed, the unit will latch off. if less than 3 shutdowns occur within the 1 minute window then the count for latch off resets and the 1 minute window starts all over again. restart after a lachoff: to restart after a latch_off either of four restart mechanisms are available. the hardware pin remote on/off may be turned off and then on . the unit may be commanded to restart via i2c through the operation command by first turning off then turning on . the third way to restart is to remove and reinsert the unit. the fourth way is to turn off and then turn on ac power to the unit. the fifth way is by changing firmware from latch off to restart. each of these commands must keep the power supply in the off state for at least 2 seconds, with the exception of changing to restart . a successful restart shall clear all alarm registers. 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. it is good practice to turn off the power supplies for about 20 ? 30 seconds in order to discharge all internal bias supplies and reset the soft start circuitry of the individual power supplies. control signals all signals are referenced to ?signal return?. device addressing: the microcontroller (mcu) and the eeprom have the following addresses: device address address bit assignments (most to least significant) mcu 0xbx 1 0 1 1 a2 a1 a0 r/w broadcast 0x00 0 0 0 0 0 0 0 0 eeprom 0xax 1 0 1 0 a2 a1 a0 r/w address lines (a2, a1, a0): these signal pins allow up to eight (8) modules to be addressed on a single i2c bus. the pins are pulled hi internally. for logic lo connect to ?output return?. global broadcast: this is a powerful command because it instruct all power supplies to respond simultaneously. a read instruction should never be accessed globally. the power supply should issue an ?invalid command? state if a ?read? is attempted globally. for example, changing the ?system? output voltage requires the global broadcast so that all paralleled power supplies change their output simultaneously. this command can also turn off the ?main? output or turn on the ?main? output of all power supplies simultaneously. unfortunately, this command does have a side effect. only a single power supply needs to pull down the ninth acknowledge bit. to be certain that each power supply responded to the global instruction, a read instruction should be executed to each power supply to verify that the command properly executed. the global broadcast command should only be executed for write instructions to slave devices. voltage programming (vprog): an analog voltage on this signal can vary the output voltage 10% of nominal, from 10.8v dc to 13.2v dc . the equation of this signal is: v out = 10.8 ? (vprog * 0.96) where vprog = 0 to 2.5v dc between 2.5 and 3v the output stays at 13.2v dc . if vprog is > 3v, or left open, the programming signal is ignored and the unit output is set at the setpoint of 12v dc . 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 12v dc output voltage. a logic lo on this signal pin turns off the 12v dc output. interlock: this is a short signal pin that controls the presence of the 12v dc 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.
ge preliminary data sheet car2512te front-end input: 90v ac to 264v ac ; output: 12 v dc @ 2500w; 3.3/5v dc standby @ 15w february 7, 2014 ?2013 general elec tric company. all rights reserved. page 8 remote sense: the two sense pins regulate the 12vdc output at the termination point external to the power supply. up to 0.5v of total load cable voltage drop to the sense point is tolerable. status signals current monitor (imon): a voltage level proportional to the delivered output current is present on this pin. the signal level is typically 15mv per amp. input_ok: a ttl compatible status signal representing whether the input voltage is within the anticipated range. this signal is pulled hi internally through a 10k ? resistor. dc_ok: a ttl compatible status signal representing whether the output voltage is present. this signal needs is pulled hi internally through a 10k ? resistor. over_temp_warning#: a ttl compatible status signal representing whether an over temperature exists this signal is pulled hi internally through a 10k ? resistor. if an over temperature should occur, this signal would pull lo approximately 10 seconds prior to shutting down the power supply. the unit would restart if internal temperatures recover within normal operational levels. at that time the signal reverts back to its open collector (hi) state. fault#: a ttl compatible status signal representing whether a fault occurred. this signal is pulled hi internally through a 10k ? resistor. this signal activates for otp, ovp, ocp, input fault or no output. ps_present#: this pin is connected to ?output return? within the power supply. its intent is to indicate to the system that a power supply is present. this signal may need to be pulled hi externally through a resistor. smbalert# (interrupt): a ttl compatible status signal, representing the smbusalert# feature of the pmbus compatible i 2 c protocol in the power supply. this signal is pulled hi internally through a 10k ? resistor. serial bus communications the i2c interface facilitates the monitoring and control of various operating parameters within the unit and transmits these on demand over an industry standard i2c serial bus. serial clock (scl): clock pulses are host generated initiating communications across the i2c serial bus. pulled up internally to 3.3v by a 10k ? resistor. the end user should add additional pull up resistance as necessary to ensure that rise and fall time timing and the maximum sink current is in compliance to the i2c specifications. serial data (sda): this is a bi-directional data line. . pulled up internally to 3.3v by a 10k ? resistor. the end user should add additional pull up resistance as necessary to ensure that rise and fall time timing and the maximum sink current is in compliance to the i2c specifications. basic operation pmbus? compliance: the power supply is fully compliant to the power management bus (pmbus?) rev1.2 requirements. manufacturer specific commands located between addresses 0xd0 to 0xef provide instructions that either do not exist in the general pmbus specification or make the communication interface simpler and more efficient. master/slave: the ?host controller? is always the master. power supplies are always slaves. slaves cannot initiate communications or toggle the clock. slaves also must respond expeditiously at the command of the master as required by the clock pulses generated by the master. clock stretching: the ?slave? controller 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 th ack bit, the exception being the start command. figure 1. example waveforms showing clock stretching. i 2c 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) = x 8 + x 2 + 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. clock stretch
ge preliminary data sheet car2512te front-end input: 90v ac to 264v ac ; output: 12 v dc @ 2500w; 3.3/5v dc standby @ 15w february 7, 2014 ?2013 general elec tric company. all rights reserved. page 9 smbalert# : the c driven smbalert# signal informs the ?master/host? controller that either a state or alarm change has occurred. normally this signal is hi. the signal will change to its lo level if the power supply has changed states and the signal will be latched lo until the power supply receives a ?clear? instruction as outlined below. if the alarm state is still present after the ?clear_faults? command has been received, then the signal will revert back into its lo state again and will latch until a subsequent ?clear_faults? signal is received from the host controller. the signal will be triggered for any state change, including the following conditions; ? vin under or over voltage ? vout under or over voltage ? iout over current ? over temperature warning or fault ? fan failure ? communication error ? pec error ? invalid command ? detected internal faults 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 remote on/off signal pin ? the main output recycled (turned off and then on) by the operation command read back delay: the power supply issues the smbalert # notification as soon as the first state change occurred. during an event a number of different states can be transitioned to before the final event occurs. if a read back is implemented rapidly by the host a successive smbalert# could be triggered by the transitioning state of the power supply. in order to avoid successive smbalert# s and read back and also to avoid reading a transitioning state, it is prudent to wait more than 2 seconds after the receipt of an smbalert# before executing a read back. this delay will ensure that only the final state of the power supply is captured. successive read backs: successive read backs to the power supply should not be attempted at intervals faster than every one second. this time interval is sufficient for the internal processors to update their data base so that successive reads provide fresh data. invalid commands or data: the power supply notifies the master if a non-supported command has been sent or invalid data has been received. notification is implemented by setting the appropriate status and alarm registers and setting the smbalert# flag . if a non-supported read is requested the power supply will return all 0x00h. pmbus tm 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 communications: when writing or reading more than two bytes of data at a time, block instructions for write and read commands must be used instead of the standard instructions block write format: 1 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
ge preliminary data sheet car2512te front-end input: 90v ac to 264v ac ; output: 12 v dc @ 2500w; 3.3/5v dc standby @ 15w february 7, 2014 ?2013 general elec tric company. all rights reserved. page 10 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 m v 2 ? ? where: v is the value, m is the 11-bit, two?s omplement mantissa, e is the 5-bit, two?s complement exponent pmbus tm command set: command hex code data byte function operation 01 1 w output on/off on_off_config 02 1 r set at 1d, can?t change clear_faults 03 0 clear status w rite_protect 10 1 w write control store_default_all 11 0 w store permanently restore_default_all 12 0 r reset defaults capability 19 1 r 30h, 400khz, smbalert v out_mode 20 1 r vout constants v out_command 21 2 w set vout fan_command_1 3b 2 w set fan speed in rpm v out_ov_fault_limit 40 2 w set ov fault limit v out_ov_fault_response 41 1 w v out_ov_warn_limit 42 2 w set ov warn limit v out_uv_warn_limit 43 2 w set uv warn limit v out_uv_fault_limit 44 2 w v out_uv_fault_response 45 1 w iout_oc_fault_limit 46 2 w iout_oc_fault_response 47 1 w latch or hiccup iout_oc_warn_limit 4a 2 w set oc warn limit ot_fault_limit 4f 2 w ot_fault_response 50 1 w latch or hiccup ot_warn_limit 51 2 w set ot warn limit v in_ov_fault_limit 55 2 w v in_ov_warn_limit 57 2 w set ov warn limit v in_uv_warn_limit 58 2 w set uv warn limit v in_uv_fault_limit 59 2 w set uv shutdown status_byte 78 1 r status_word 79 2 r status_vout 7a 1 r status_iout 7b 1 r status_input 7c 1 r status_temperature 7d 1 r status_cml 7e 1 r status_other 7f 1 r command hex code data field function status_mfr_specific 80 1 r status_fan_1_2 81 1 r read_vin 88 2 r 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 16 mfr_serial 9e 15 mfr_vin_min a0 2 mfr_vin_max a1 2 mfr_iin_max a2 2 mfr_pin_max a3 2 mfr_vout_min a4 2 mfr_vout_max a5 2 mfr_iout_max a6 2 mfr_pout_max a7 2 mfr_tambient_max a8 2 mfr_tambient_min a9 2 user_data_00 b0 48 w user memory space user_data_01 b1 48 w user memory space read_mfr_revision d5 4 r fan_duty_cycle d6 1 w duty_cycle in % fan_speed d7 1 w control in duty cycle vprog_ext d8 2 w notes: settings and read backs above support the 12vdc main output. there are no adjustments or read backs of the standby output. failure of the standby output is reported by the status_mfr_specific register. the code does not check the validity of, or whether the data being changed is within the expected boundary. the user is responsible to make sure that data placed in the registers is within the monitored range. status register bit allocation: register code bit 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 temperature fault/warning detected 1 cml (communication fault) detected 0 none of below
ge preliminary data sheet car2512te front-end input: 90v ac to 264v ac ; output: 12 v dc @ 2500w; 3.3/5v dc standby @ 15w february 7, 2014 ?2013 general elec tric company. all rights reserved. page 11 register code bit function 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 npower_good 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_fan_1_2 81 7 fan 1 fault 6 fan 2 fault 5 n/a 4 n/a 3 fan 1 speed overridden 2 fan 2 speed overridden 1 n/a 0 n/a status_mfr_specific 80 7 3.3v_fault 6 ovsd 5 interrupt 4 fault detected 3 ps_remote_off 2 dc fault 1 input fault 0 0 ? ac high line, 1 ? ac low line command descriptions operation (01) : by default the power supply is turned on at power up as long as power on/off signal pin is active hi. the 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 controller 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 2 c communications are established. to properly hot-plug a power supply into a live backplane, the system generated voltage should get re-configured into either the factory adjusted firmware level or the voltage level reconfigured by the margin pin. otherwise, the voltage state of the plugged in power supply could be significantly different than the powered system. vout_ov_warn_limit (42): ov_warning is extremely useful because it gives the system controller a heads up that the output voltage is drifting out of regulation and the power supply is close to shutting down. pre-amative action may be taken before the power supply would shut down and potentially disable the system.
ge preliminary data sheet car2512te front-end input: 90v ac to 264v ac ; output: 12 v dc @ 2500w; 3.3/5v dc standby @ 15w february 7, 2014 ?2013 general elec tric company. all rights reserved. page 12 oc and ot_fault_ response (47, 50): the default response for both oc and ot is auto_restart (hiccup). each register, individually, can be reconfigured into a latched state. latched and hiccup are the only supported states. restart after a latch off: either of four restart possibilities are available. the hardware pin remote on/off may be turned off and then on . the unit may be commanded to restart via i2c through the operation command by first turning off then turning on . the third way to restart is to remove and reinsert the unit. the fourth way is to turn off and then turn on ac power to the unit. each of these commands must keep the power supply in the off state for at least 2 seconds, with the exception of changing to restart . a power system that is comprised of a number of power supplies could have difficulty restarting after a shutdown event because of the non-synchronized behavior of the individual power supplies. implementing the latch-off mechanism permits a synchronized restart that guarantees the simultaneous restart of the entire system. a synchronous restart can be implemented by; 1. issuing a global off and then on command to all power supplies, 2. toggling off and then on the remote on/off signal 3. removing and reapplying input commercial power to the entire system. the power supplies should be tu rned off for at least 20 ? 30 seconds in order to discharge all internal bias supplies and 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. mfr_id (99): manufacturer in ascii ? 5 characters maximum, general electric ? critical power represented as, ge-cp mfr_model (9a): total 16 bytes: car2512texxxz01 mfr_serial (9e): 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. read_mfr_rev (d5): total 4 bytes each byte is partitioned into high and low nibbles. example: ff is read as 16.16 11 is read as 1.1 series hardware rev primary c secondary c fan_speed (d7): this register can be used to ?read? the fan speed in adjustment percent (0 ? 100%) or set the fan speed in adjustment percent (0 ? 100%). the speed of the fan cannot be reduced below what the power supply requires for its operation. the register value is the percent number, it is not in linear format. eeprom the microcontroller has 96 bytes of eeprom memory available for the system host. leds two leds are located on the front faceplate. the input ok led provides input signaling function. when the led is on green the power supply input is within normal design limits. the second led dc/flt indicates three states. when the led is green then there are no faults and the dc output is present. when the led is amber then a fault condition exists but the power supply still provides output power. when the led is red then a fault condition exists and the power supply does not provide output power.
ge preliminary data sheet car2512te front-end input: 90v ac to 264v ac ; output: 12 v dc @ 2500w; 3.3/5v dc standby @ 15w february 7, 2014 ?2013 general electric company. all rights reserved. page 13 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 mo dule is running and the other one is with no ac. outline drawing airflow 15.817 .020 15.375 .020 cover chassis 0.330
ge preliminary data sheet car2512te front-end input: 90v ac to 264v ac ; output: 12 v dc @ 2500w; 3.3/5v dc standby @ 15w february 7, 2014 ?2013 general electric company. all rights reserved. page 14 connector pin assignments input connector: iec320, c20; mating connector: iec320, c19 type output connector: tyco p/n 6600122-7 or equivalent mating connector: primary source: fci berg p/n 51915-176lf secondary source: tyco p/n 6450171-5 pin function pin function pin function pin function a1 v stdby b1 fault c1 ishare d1 vprog a2 ps present b2 current monitor (imon) c2 v stdby d2 ovp test point 6 a3 v stdby return b3 interlock c3 over_temp_warning d3 remote on/off a4 n/c b4 v stdby return 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 ac_ok a6 remote sense (-) b6 scl (i 2 c bus) c6 i 2 c address (a2) d6 smbalert p1 ? p6 output return p7? p12 +12v out 6 for factory use
ge preliminary data sheet car2512te front-end input: 90v ac to 264v ac ; output: 12 v dc @ 2500w; 3.3/5v dc standby @ 15w contact us for more information, call us at usa/canada: +1 888 546 3243 , or +1 972 244 9288 asia-pacific: +86.021.54279977*808 europe, middle-east and africa: +49.89.878067-280 india: +91.80.28411633 www.ge.com/powerelectronics february 7, 2014 ?2013 general elec tric company. all rights reserved. page 15 ordering information please contact your ge sales representative for pricing, availability and optional features. product description part number 2500w front-end +12v out , 3.3v stdby , face plate, pmbus interface, rohs 6 of 6 CAR2512TEBXXZ01A 2500w front-end +12v out , 5v stdby , face plate, pmbus interface, rohs 6 of 6 car2512tebx5z01a part number definition guide example car2512texxxz 01a rtm rohs blank ? non compliant y ? 5 of 6 compliant z ? 6 of 6 compliant options b ? bezel c ? i2c option r ? reverse airflow vstdby ? 3 or 5 power 25 = 2500w output voltage 12 = 12vdc type fp ? ac; v o- positive tn ? ac; v o- negative dc - dc te ? ac; high efficiency a ? standard model

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