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ge data sheet july 22, 2013 ?2012 general electric company. all rights reserved. page 1 ebvw020a0b barracuda* series; dc-dc converter power modules 36-75vdc input; 12.0vdc, 20.0a, 240w output features ? compliant to rohs eu directive 2011/65/ec (-z versions) ? compliant to reach directive (ec) no 1907/2006 ? compatible with reflow pin/paste soldering process ? high and flat efficiency profile ? 95.4% at 12v dc , 55% load to 90% output ? wide input voltage range: 36-75v dc ? delivers up to 20a dc output current ? output voltage adjust: 6.0v dc to 13.2v dc ? tightly regulated output voltage ? low output ripple and noise ? no reverse current during prebias start-up or shut-down ? industry standard, dosa compliant, eight brick: ? 58.4 mm x 22.8 mm x 11.3 mm ? (2.30 in x 0.90 in x 0.44 in) ? constant switching frequency ? positive remote on/off logic ? output over current/voltage protection ? over temperature protection ? wide operating temperature range (-40c to 85c) ? can/csa? c22.2 no. 60950-1-07, 2nd edition + a1:2011 (mod), ansi/ul # 60950-1-2011, iec 60950-1 (2nd edition); am1, and vde? (en60950-1, 2nd ed.) licensed ? ce mark 2006/96/ec directives ? meets the voltage and current requirements for etsi 300-132- 2 and complies with and licensed for basic insulation rating per en60950-1 ? 2250 vdc isolation tested in compliance with ieee 802.3 poe standards ? iso** 9001 and iso14001 certified manufacturing facilities applications ? distributed power architectures ? intermediate bus voltage applications ? servers and storage applications ? networking equipment including power over ethernet (poe) ? fan assemblies other systems requiring a tightly regulated output voltage options ? negative remote on/off logic (1=option code, factory preferred) ? auto-restart after fault shutdown (4=option code, factory preferred) ? remote sense and output voltage trim (9=option code) ? base plate option (-h=option code) ? passive droop load sharing (-p=option code) description the ebvw020a0b series of dc-dc converters are a new generation of dc/dc power modules designed to support 9.6 -12v dc intermediate bus applications where multiple low voltages are subsequently generated using point of load (pol) converters, as well as other application requiring a tightly regulated output voltage. the ebvw020a0b series operate from an input voltage range of 36 to 75v dc , and provide up to 20a output current at output voltages from 6.0v dc to 12.0v dc , and 240w output power from output voltages of 12.1v dc to 13.2v dc in a dosa standard eighth brick. the converter incorporates digital control, synchronous rectification technology, and innovative packaging techniques to achieve efficiency reaching 95.4% peak at 12v dc output. this leads to lower power dissipations such that for many applications a heat sink is not required. standard features include on/off control, output overcurrent and over voltage protection, over temperature protection, input under and over voltage lockout. optional features include output voltage remote sense and trim from 6.0v dc to 13.2v dc , passive droop paralleling, and base plate for heat sink or cold wall applications. the output is fully isolated from the input, allowing versatile polarity configurations and grounding connections. built-in fil tering for both input and output minimizes the need for external filtering. * trademark of general electric company # ul is a registered trademark of underwriters laboratories, inc. ? csa is a registered trademark of canadian standards association. ? vde is a trademark of verband deutscher elektrotechniker e.v. this product is intended for integration into end-user equipm ent . all of the required procedures of end-use equipment shoul d be followed. ieee and 802 are registered trademarks of the institute of electrical and electronics engineers, incorporated. ** iso is a registered trademark of the international organization of standards.
ge data sheet ebvw020a0b barracuda series; dc -dc converter power modules 36-75vdc input; 12.0vdc, 20.0a, 240w output july 22, 2013 ?2012 general electric company. all rights reserved. page 2 absolute maximum ratings stresses in excess of the absolute maximum ratings can cause permanent damage to the device. these are absolute stress ratings only, functional operation of the device is not implied at these or any other conditions in excess of those given in the operat ions sections of the data sheet. exposure to absolute maximum ratings for extended periods can adversely affect device reliability. parameter device symbol min max unit input voltage* continuous v in -0.3 75 v dc operating transient 100ms 100 v dc operating input transient slew rate, 50v in to 75v in (output may exceed regulation limits, no protective shutdowns shall activate, c o =220 f to c o, max ) - - 10 v/s non- operating continuous v in 80 100 v dc operating ambient temperature all t a -40 85 c (see thermal considerations section) storage temperature all t stg -55 125 c i/o isolation voltage (100% factory hi-pot tested) all ? ? 2250 v dc * input over voltage protection will shutdown the output voltage, when the input voltage exceeds threshold level. electrical specifications unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. parameter device symbol min typ max unit operating input voltage v in 36 48 75 v dc maximum input current i in,max - - 7 a dc (v in =0v to 75v, i o =i o, max ) input no load current all i in,no load 50 ma (v in = v in, nom , i o = 0, module enabled) input stand-by current all i in,stand-by 25 ma (v in = v in, nom , module disabled) external input capacitance all 100 - - f inrush transient all i 2 t - - 1 a 2 s input terminal ripple current (measured at module input pin with maximum specified input capacitance and o 500uh inductance between voltage source and input capacitance c in =220uf, 5hz to 20mhz, v in = 48v, i o = i omax ) all - 900 - ma rms input reflected ripple current, peak-to-peak (5hz to 20mhz, 12 h source impedance; v in = 48v, i o = i omax ; see figure 12) all - 24 - ma p-p input ripple rejection (120hz) all - 50 - db caution: this power module is not internally fu sed. an input line fuse must always be used. this power module can be used in a wide variety of applications, ranging from simple standalone operation to an integrated part of sophisticated power architecture. to preserve maximum flexibility, internal fusing is not included, however, to achieve maxi mum safety and system protection, always use an input line fuse. the safety agencies require a fast-acting fuse with a maximum rati ng of 15 a (see safety considerations section). based on the information provided in this data sheet on inrush energy and maximum dc input current, the same type of fuse with a lower rating can be used. refer to the fuse manufacturer?s data sheet for furthe r information.
ge data sheet ebvw020a0b barracuda series; dc -dc converter power modules 36-75vdc input; 12.0vdc, 20.0a, 240w output july 22, 2013 ?2012 general electric company. all rights reserved. page 3 electrical specifications (continued) parameter device symbol min typ max unit output voltage set-point (v in =v in,nom , i o =10a, t a =25c) all v o, set 11.97 12.00 12.03 v dc output voltage (over all operating input voltage( 40v to 75v), resistive load, and te m pe r atu r e co n d i t i o n s u n t il e n d o f lif e) all w/o -p v o 11.76 ? 12.24 v dc -p option v o 11.63 ? 12.37 v dc output voltage (v in =36v, t a = 25oc) all v o 10.8 ? ? v dc output regulation (v in, min =40v) line (v in =v in, min to v in, max ) all w/o -p ? 0.2 ? % v o, set load (i o =i o, min to i o, max ) all w/o -p ? 0.2 ? % v o, set line (v in =v in, min to v in, max ) -p option ? 0.5 ? % v o, set load (i o =i o, min to i o, max ), intentional droop -p option 0.50 v dc temperature (t a = -40oc to +85oc) all ? 2 ? % v o, set output ripple and noise on nominal output (v in =v in, nom and i o =i o, min to i o, max , tested with a 1.0 f ceramic, 10 f aluminum and 220 f polymer capacitor across the load.) rms (5hz to 20mhz bandwidth) all ? 70 ? mv rms peak-to-peak (5hz to 20mhz bandwidth) all ? 200 ? mv pk-pk external output capacitance all c o 220 ? 10,000 f output current all i o 0 20 a dc output current limit inception all i o, lim ? 23 ? a dc efficiency (v in =v in, nom , v o = v o,set , t a =25c) i o = 100% i o, max all 95.2 % i o = 55% - 90% i o, max all 95.4 % switching frequency (primary mosfets) (output ripple 2x switching frequency) f sw 150 khz dynamic load response (dio/dt=1a/10 ? s; v in =v in ,nom; t a =25c; tested with a 10 f ceramic and 1x 470 f polymer capacitor across the load.) load change from io= 50% to 75% of io,max: peak deviation settling time (vo<10% peak deviation) all v pk t s ? __ 750 800 ? __ mv pk ? s load change from io= 75% to 50% of io,max: peak deviation settling time (vo<10% peak deviation) v pk t s __ __ 750 800 ? __ mv pk ? s isolation specifications parameter symbol min typ max unit isolation capacitance c iso ? 1000 ? pf isolation resistance r iso 10 ? ? m ? general specifications parameter device symbol typ unit calculated reliability based upon telcordia sr-332 issue 2: method i, case 1, (i o =80%i o, max , t a =40c, airflow = 200 lfm), 90% confidence all mtbf 4,169,213 hours all fit 239.9 10 9 /hour s weight ? open frame 29.5 (1.04) g (oz.) weight ? with baseplate option 39.0 (1.38) g (oz.)
ge data sheet ebvw020a0b barracuda series; dc -dc converter power modules 36-75vdc input; 12.0vdc, 20.0a, 240w output july 22, 2013 ?2012 general electric company. all rights reserved. page 4 feature specifications unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. see feature descriptions for additional information. parameter device symbol min typ max unit remote on/off signal interface (v in =v in, min to v in, max , signal referenced to v in- terminal) negative logic: device code suffix ?1? logic low = module on, logic high = module off positive logic: no device code suffix required logic low = module off, logic high = module on logic low specification on/off thresholds: remote on/off current ? logic low all i on/off 280 ? 310 a logic low voltage all v on/off -0.3 ? 0.8 v dc logic high voltage ? (typ = open collector) all v on/off 2.0 ? 14.5 v dc logic high maximum allowable leakage current (v on/off = 2.0v) all i on/off ? ? 10 a maximum voltage allowed on on/off pin all v on/off ? ? 14.5 v dc turn-on delay and rise time (i o =i o, max ) t delay =time until v o = 10% of v o,set from either application of vin with remote on/off set to on (ena ble with vin); or operation of remote on/off from off to on with vin already applied for at least 150 milli-seconds (enable with on/off). * increased t delay due to startup for parallel modules. all w/o -p t delay, enable with vin ? ? 160 ms all w/o-p t delay , enable with on/off ? ? 40 ms w/ -p t delay , enable with vin ? ? 180* ms w/ -p t delay , enable with on/off ? ? 40* ms t rise =time for v o to rise from 10% to 90% of v o,set , for c o >5000uf, i o must be < 50% i o, max during t rise . * increased t rise when vo exists at startup for parallel modules. all w/o -p t rise ? ? 40 ms w/ -p t rise ? ? 300* ms load sharing current balance (difference in output current acro ss all modules with outputs in parallel, no load to full load) -p option i diff 3 a prebias output load performance: back bias current sunk by output during start-up back bias current sunk by output during shut-down all ? ? ? ? 50 50 ma ma remote sense range all w/ ?9? option v sense ? ? 0.5 v dc output voltage adjustment range all w/ ?9? option v o, set 6.0 13.2 v dc output overvoltage protection all v o,limit 14.5 17.0 v dc overtemperature protection all t ref ? 140 ? c (see feature descriptions) input undervoltage lockout turn-on threshold ? 35 36 v dc turn-off threshold 32 33.5 ? v dc input overvoltage lockout turn-off threshold ? 85 86 v dc turn-on threshold 76 79 ? v dc
ge data sheet ebvw020a0b barracuda series; dc -dc converter power modules 36-75vdc input; 12.0vdc, 20.0a, 240w output july 22, 2013 ?2012 general electric company. all rights reserved. page 5 characteristic curves the following figures provide typical characteristics for the ebvw020a0b (12v, 20a) at 25oc. the figures are identical for eith er positive or negative remote on/off logic. input current, i i (a) output voltage on/off voltage v o (v) (5v/div) v on/off (v) (2v/div) input voltage, v o (v) time, t (20 ms/div) figure 1. typical input characteristic at room temperature. figure 4. typical start-up using remote on/of f with vin applied, negative logic version shown. effciency, (%) output current output voltage i o (a) (5a/div) v o (v) (500mv/div) output current, i o (a) time, t (1 ms/div) figure 2. typical converter efficiency vs. output current at room temperature. figure 5. typical transient response to step change in load from 25% to 50% to 25% of full load at 48 vdc input and 470uf polymer. outpu t voltage input voltage v o (v) (5v/div) v in (v) (20v/div) output current output voltage i o (a) (5a/div) v o (v) (500mv/div) time, t (40 ms/div) time, t (1 ms/div) figure 3. typical start-up using vin with remote on/off enabled, negative logic version shown. figure 6. typical transient response to step change in load from 50% to 75% to 50% of full load at 48 vdc input and 470uf polymer.
ge data sheet ebvw020a0b barracuda series; dc -dc converter power modules 36-75vdc input; 12.0vdc, 20.0a, 240w output july 22, 2013 ?2012 general electric company. all rights reserved. page 6 characteristic curves (continued) output voltage, v o (v) output voltage, v o (v) input voltage, v in (v) input voltage, v in (v) figure 7. typical output voltage regulation vs. input voltage at room temperature. figure 10. typical output voltage regulation vs. input voltage for the ?p version at room temperature. output voltage, v o (v) output voltage, v o (v) output current, i o (a) output current, i o (a) figure 8. typical output voltage regulation vs. output current at room temperature. figure 11. typical output voltage regulation vs. output current for the ?p version at room temperature. output voltage , v o (v) (50mv/div) time, t (2 ? s/div) figure 9. typical output ripple and noise at room temperature i o = i o,max and and c omin . 36 vin 48 vin 75 vin
ge data sheet ebvw020a0b barracuda series; dc -dc converter power modules 36-75vdc input; 12.0vdc, 20.0a, 240w output july 22, 2013 ?2012 general electric company. all rights reserved. page 7 test configurations note: measure input reflected-ripple current with a simulated source inductance (ltest) of 12 h. capacitor cs offsets possible battery impedance. me asure current as shown above. figure 12. input reflected ripple current test setup. note: use a 1.0 f ceramic capacitor and a 10 f aluminum or tantalum capacitor. scope measurement should be made using a bnc socket. posi tion the load between 51 mm and 76 mm (2 in. and 3 in.) from the module. figure 13. output ripple and noise test setup. note: all measurements are taken at the module terminals. when socketing, place kelvin connections at module terminals to avoid measurement errors due to socket contact resistance. figure 14. output voltage and efficiency test setup. design considerations input source impedance the power module should be connected to a low ac-impedance source. a highly inductive source impedance can affect the stability of the power module. for the test configuration in figure 12, a 220 f electrolytic capacitor, c in , (esr<0.7 ? at 100khz), mounted close to the power module helps ensure the stability of the unit. if the module is subjected to rapid on/off cycles, a 330 f input capacitor is required. consult the factory for further application guidelines. safety considerations for safety-agency approval of the system in which the power module is used, the power module must be installed in compliance with the spacing and separation requirements of the end-use safety agency standard, i.e., ul60950-1 2 nd ed., csa c22.2 no. 60950-1 2 nd ed., and vde0805-1 en60950-1 2 nd ed. if the input source is non-selv (elv or a hazardous voltage greater than 60 vdc and less than or equal to 75vdc), for the module?s output to be considered as meeting the requirements for safety extra-low voltage (selv), all of the following must be true: ? the input source is to be provided with reinforced insulation from any other hazardous voltages, including the ac mains. ? one v in pin and one v out pin are to be grounded, or both the input and output pins are to be kept floating. ? the input pins of the module are not operator accessible. ? another selv reliability test is conducted on the whole system (combination of supply source and subject module), as required by the safety agencies, to verify that under a single fault, hazardous voltages do not appear at the module?s output. note: do not ground either of the input pins of the module without grounding one of the output pins. this may allow a non-selv voltage to appear between the output pins and ground. the power module has safety extra-low voltage (selv) outputs when all inputs are selv. the input to these units is to be provided with a maximum 15 a fast-acting (or time-delay) fuse in the unearthed lead. the power module has internally generated voltages exceeding safety extra-low voltage. consideration should be taken to restrict operator accessibility. load contact and supply i i contact v i (+) v i (?) v o1 distribution losses resistance i o v o2
ge data sheet ebvw020a0b barracuda series; dc -dc converter power modules 36-75vdc input; 12.0vdc, 20.0a, 240w output july 22, 2013 ?2012 general electric company. all rights reserved. page 8 feature descriptions overcurrent protection to provide protection in a fault output overload condition, the module is equipped with internal current-limiting circuitry and can endure current limiting continuously. if the overcurrent condition causes the output voltage to fall greater than 4.0v from v o,set , the module will shut down and remain latched off. the overcurrent latch is reset by either cycling the input power or by toggling the on/off pin for one second. if the output overload condition still exists when the module restarts, it will shut down again. this operation will continue indefinitely until the overcurrent condition is corrected. a factory configured auto-restart option (with overcurrent and overvoltage auto-restart managed as a group) is also available. an auto-restart feature continually attempts to restore the operation until fault condition is cleared. remote on/off the module contains a standard on/off control circuit reference to the v in (-) terminal. two factory configured remote on/off logic options are available. positive logic remote on/off turns the module on during a logic-high voltage on the on/off pin, and off during a logic low. negative logic remote on/off turns the module off during a logic high, and on during a logic low. negative logic, device code suffix "1," is the factory-preferred configuration. the on/off circuit is powered from an internal bias supply, derived from the input voltage terminals. to turn the power module on and off, the user must supply a switch to control the voltage between the on/off terminal and the v in (-) terminal (v on/off ). the switch can be an open collector or equivalent (see figure 15). a logic low is v on/off = -0.3v to 0.8v. the typical i on/off during a logic low (vin=48v, on/off terminal=0.3v) is 147a. the switch should maintain a logic-low voltage while sinking 310a. during a logic high, the maximum v on/off generated by the power module is 8.2v. the maximum allowable leakage current of the switch at v on/off = 2.0v is 10a. if using an external voltage source, the maximum voltage v on/off on the pin is 14.5v with respect to the v in (-) terminal. if not using the remote on/off feature, perform one of the following to turn the unit on: for negative logic, short on/off pin to v in (-). for positive logic: leave on/off pin open. figure 15. remote on/off implementation. output overvoltage protection the module contains circuitry to detect and respond to output overvoltage conditions. if the overvoltage condition causes the output voltage to rise above the limit in the specifications table, the module will shut down and remain latched off. the overvoltage latch is reset by either cycling the input power, or by toggling the on/off pin for one second. if the output overvoltage condition still exists when the module restarts, it will shut down again. this operation will continue indefinitely until the overvoltage condition is corrected. a factory configured auto-restart option (with overcurrent and overvoltage auto-restart managed as a group) is also available. an auto-restart feature continually attempts to restore the operation until fault condition is cleared. overtemperature protection these modules feature an overtemperature protection circuit to safeguard against thermal damage. the circuit shuts down the module when the maximum device reference temperature is exceeded. the module will automatically restart once the reference temperature cools by ~25c. input under/over voltage lockout at input voltages above or below the input under/over voltage lockout limits, module operation is disabled. the module will begin to operate when the input voltage level changes to within the under and overvoltage lockout limits. load sharing for higher power requirements, the ebvw020a0 power module offers an optional feature for parallel operation (-p option code). this feature provides a precise forced output voltage load regulation droop characteristic. the output set point and droop slope are factory calibrated to insure optimum matching of multiple modules? load regulation characteristics. to implement load sharing, the following requirements should be followed: ? the v out (+) and v out (-) pins of all parallel modules must be connected together. balance the trace resistance for each module?s path to the output power planes, to insure best load sharing and operating temperature balance. ? v in must remain between 40v dc and 75v dc for droop sharing to be functional. ? it is permissible to use a common remote on/off signal to start all modules in parallel. ? these modules contain means to block reverse current flow upon start-up, when output voltage is present from other parallel modules, thus eliminating the requirement for external output oring devices. modules with the ?p option will self determine the presence of voltage on the output from other operating modules, and automatically increase its turn on delay, t delay , as specified in the feature specifications table. ? when parallel modules startup into a pre-biased output, e.g. partially discharged output capacitance, the t rise is automatically increased, as specified in the feature specifications table, to insure graceful startup. ? insure that the load is <50% i o,max (for a single module) until all parallel modules have started (load full start > module t delay time max + t rise time). ? if fault tolerance is desired in parallel applications, output oring devices should be used to prevent a single module failure from collapsing the load bus.
ge data sheet ebvw020a0b barracuda series; dc -dc converter power modules 36-75vdc input; 12.0vdc, 20.0a, 240w output july 22, 2013 ?2012 general electric company. all rights reserved. page 9 feature descriptions (continued) remote sense (?9? option code) remote sense minimizes the effects of distribution losses by regulating the voltage at the remote-sense connections (see figure 16). the voltage between the remote-sense pins and the output terminals must not exceed the output voltage sense range given in the feature specifications table: [v o (+) ? v o (?)] ? [sense(+) ? sense(?)] ? 0.5 v although the output voltage can be increased by both the remote sense and by the trim, the maximum increase for the output voltage is not the sum of both. the maximum increase is the larger of either the remote sense or the trim. the amount of power delivered by the module is defined as the voltage at the output terminals multiplied by the output current. when using remote sense and trim, the output voltage of the module can be increased, which at the same output current would increase the power output of the module. care should be taken to ensure that the maximum output power of the module remains at or below the maximum rated power (maximum rated power = vo,set x io,max). figure 16. circuit configuration for remote sense. trim, output voltage programming trimming allows the output voltage set point to be increased or decreased; this is accomplished by connecting an external resistor between the trim pin and either the v o (+) pin or the v o (- ) pin. v o (+) t/c1 v o (-) r trim-down load ebvw020a0b r trim-up figure 17. circuit configuration to trim output voltage. connecting an external resistor (r trim-down ) between the t/c1 pin and the vo(-) (or sense(-)) pin decreases the output voltage set point. to maintain set point accuracy, the trim resistor tolerance should be 1.0%. the following equation determines the required external resistor value to obtain a percentage output voltage change of ? % ?? ? ? ? ? ? ? ? ? ? ? 22 . 10 % 511 down trim r where 100 % , , ? ? ? ? ? ? ? ? ? ? ? ? set o desired set o v v v for example, to trim-down the output voltage of the module by 20% to 9.6v, rtrim-down is calculated as follows: 20 % ? ? ? ? ? ? ? ? ? ? ? ? ? ? k k r down trim 3 . 15 22 . 10 20 511 connecting an external resistor (r trim-up ) between the t/c1 pin and the v o (+) (or sense (+)) pin increases the output voltage set point. the following equations determine the required external resistor value to obtain a percentage output voltage change of ? %: ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 22 . 10 % 511 % 225 . 1 %) 100 ( 11 . 5 , set o up trim v r where 100 % , , ? ? ? ? ? ? ? ? ? ? ? ? set o set o desired v v v for example, to trim-up the output voltage of the module by 5% to 12.6v, r trim-up is calculated is as follows: 5 % ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? k k r up trim 8 . 938 22 . 10 5 511 5 225 . 1 ) 5 100 ( 0 . 12 11 . 5 the voltage between the vo(+) and vo(?) terminals must not exceed the minimum output overvoltage protection value shown in the feature specifications table. this limit includes any increase in voltage due to remote-sense compensation and output voltage set-point adjustment trim. although the output voltage can be increased by both the remote sense and by the trim, the maximum increase for the output voltage is not the sum of both. the maximum increase is the larger of either the remote sense or the trim. the amount of power delivered by the module is defined as the voltage at the output terminals multiplied by the output current. when using remote sense and trim, the output voltage of the module can be increased, which at the same output current would increase the power output of the module. care should be taken to ensure that the maximum output power of the module remains at or below the maximum rated power (maximum rated power = v o,set x i o,max ). thermal considerations the power modules operate in a variety of thermal environments and sufficient cooling should be provided to help ensure reliable operation. thermal considerations include ambient temperature, airflow, module power dissipation, and the need for increased reliability. a reduction in the operating temperature of the module will result in an increase in reliability. v o (+) sense(+) sense(?) v o (?) v i (+) v i (-) i o load cont act and distribution loss e suppl y i i contact resist ance
ge data sheet ebvw020a0b barracuda series; dc -dc converter power modules 36-75vdc input; 12.0vdc, 20.0a, 240w output july 22, 2013 ?2012 general electric company. all rights reserved. page 10 feature descriptions (continued) the thermal data presented here is based on physical measurements taken in a wind tunnel, using automated thermo-couple instrumentation to monitor key component temperatures: fets, diodes, control ics, magnetic cores, ceramic capacitors, opto-isolators, and module pwb conductors, while controlling the ambient airflow rate and temperature. for a given airflow and ambient temperature, the module output power is increased, until one (or more) of the components reaches its maximum derated operating temperature, as defined in ipc-9592. this procedure is then repeated for a different airflow or ambient temperature until a family of module output derating curves is obtained. heat-dissipating components are mounted on the top side of the module. heat is removed by conduction, convection and radiation to the surrounding environment. proper cooling can be verified by measuring the thermal reference temperature (th x ). peak temperature (th x ) occurs at the position indicated in figure 18 and 19. for reliable operation this temperature should not exceed the listed temperature threshold. figure 18. location of the thermal reference temperature th 1 . do not exceed 113 c. figure 19. location of the thermal reference temperature th 2 for base plate module. do not exceed 110 c. the output power of the module should not exceed the rated power for the module as listed in the ordering information table. although the maximum temperature of the power modules is th x , you can limit this temperature to a lower value for extremely high reliability. please refer to the application note ?thermal characterization process for open-frame board-mounted power modules? for a detailed discussion of thermal aspects including maximum device temperatures. heat transfer via convection increased airflow over the module enhances the heat transfer via convection. the thermal derating of figures 20 through 22 show the maximum output current that can be delivered by each module in the indicated orientation without exceeding the maximum th x temperature versus local ambient temperature (t a ) for air flows of, natural convection, 1 m/s (200 ft./min), 2 m/s (400 ft./min). the use of figures 20 is shown in the following example: example what is the minimum airflow necessary for a ebvw020a0b operating at v i = 48 v, an output current of 14a, and a maximum ambient temperature of 70 c in transverse orientation. solution: given: v in = 48v, i o = 14a, t a = 70 c determine required airflow (v) (use figure 20): v = 200lfm or greater. output current, i o ( a ) local ambient temperature, t a ( ? c) figure 20. output current derating for the open frame ebvw020a0b in the transverse orientation; airflow direction from vin(-) to vin(+); vin = 48v.
ge data sheet ebvw020a0b barracuda series; dc -dc converter power modules 36-75vdc input; 12.0vdc, 20.0a, 240w output july 22, 2013 ?2012 general electric company. all rights reserved. page 11 output current, i o (a) local ambient temperature, t a ( ? c) figure 21. output current derating for the base plate ebvw020a0bxx-h in the transverse orientation; airflow direction from vin(-) to vin(+); vin = 48v. output current, i o (a) local ambient temperature, t a ( ? c) figure 22. output current de rating for the base plate ebvw020a0bxx-h and 0.25? heat sink in the transverse orientation; airflow direction from vin(-) to vin(+); vin = 48v. layout considerations the ebvw020 power module series are low profile in order to be used in fine pitch system card architectures. as such, component clearance between the bottom of the power module and the mounting board is limited. avoid placing copper areas on the outer layer directly underneath the power module. also avoid placing via interconnects underneath the power module. for additional layout guide-li nes, refer to flt007a0z data sheet. through-hole lead-free soldering information the rohs-compliant, z version, through-hole products use the sac (sn/ag/cu) pb-free solder and rohs-compliant components. the non-z version products use lead-tin (pb/sn) solder and rohs-compliant components. both version modules are designed to be processed through single or dual wave soldering machines. the pins have an rohs-compliant, pure tin finish that is compatible with both pb and pb-free wave soldering processes. a maximum preheat rate of 3 ? c/s is suggested. the wave preheat process should be such that the temperature of the power module board is kept below 210 ? c. for pb solder, the recommended pot temperature is 260 ? c, while the pb-free solder pot is 270 ? c max. not all rohs- compliant through-hole products can be processed with paste- through-hole pb or pb-free reflow process. if additional information is needed, please consult with your ge representative for more details. reflow lead-free soldering information the rohs-compliant through-hole products can be processed with the following paste-through-hole pb or pb-free reflow process. max. sustain temperature : 245 ? c (j-std-020c table 4-2: packaging thickness>=2.5 mm / volume > 2000 mm 3 ), peak temperature over 245 ? c is not suggested due to the potential reliability risk of components under continuous high- temperature. min. sustain duration above 217 ? c : 90 seconds min. sustain duration above 180 ? c : 150 seconds max. heat up rate: 3 ? c/sec max. cool down rate: 4 ? c/sec in compliance with jedec j-std-020c spec for 2 times reflow requirement. pb-free reflow profile bmp module will comply with j-std-020 rev. c (moisture/reflow sensitivity classification for nonhermetic solid state surface mount devices) for both pb- free solder profiles and msl classification procedures. bmp will comply with jedec j-std-020c specification for 3 times reflow requirement. the suggested pb- free solder paste is sn/ag/cu (sac). the recommended linear reflow profile using sn/ag/cu solder is shown in figure 23. time temp ramp up max. 3 c/sec ramp down max. 4 c/sec time limited 90 sec. above 217c preheat time 100-150 sec. peak temp. 240 -245 c 25 c 150 c 200 c 217 c figure 23. recommended linear reflow profile using sn/ag/cu solder. msl rating the ebvw020a0ba modules have a msl rating of 2a. storage and handling the recommended storage environment and handling procedures for moisture-sensitive surface mount packages is
ge data sheet ebvw020a0b barracuda series; dc -dc converter power modules 36-75vdc input; 12.0vdc, 20.0a, 240w output july 22, 2013 ?2012 general electric company. all rights reserved. page 12 detailed in j-std-033 rev. a (handling, packing, shipping and use of moisture/reflow sensitive surface mount devices). moisture barrier bags (mbb) with desiccant are required for msl ratings of 2 or greater. these sealed packages should not be broken until time of use. once the original package is broken, the floor life of the product at conditions of ? 30c and 60% relative humidity varies according to the msl rating (see j-std- 025a). the shelf life for dry packed smt packages will be a minimum of 12 months from the bag seal date, when stored at the following conditions: < 40 c, < 90% relative humidity. post solder cleaning and drying considerations post solder cleaning is usually the final circuit-board assembly process prior to electrical board testing. the result of inadequate cleaning and drying can affect both the reliability of a power module and the testability of the finished circuit-board assembly. for guidance on appropriate soldering, cleaning and drying procedures, refer to ge board mounted power modules: soldering and cleaning application note (ap01-056eps). emc considerations the circuit and plots in figure 24 shows a suggested configuration to meet the conducted emission limits of en55022 class b. for further in formation on designing for emc compliance, please refer to the flt007a0 data sheet. figure 24. emc considerations. 0 10 20 30 40 50 60 70 80 level [dbv] 150k 300k 500k 1m 2m 3m 4m 5m 7m 10m 30m frequency [hz] + + + + + + x x x x x x x x mes ce0916111952_fin qp + + mes ce0916111952_fin av mes ce0916111952_pre pk mes ce0916111952_pre av
ge data sheet ebvw020a0b barracuda series; dc -dc converter power modules 36-75vdc input; 12.0vdc, 20.0a, 240w output july 22, 2013 ?2012 general electric company. all rights reserved. page 13 packaging details all versions of the ebvw020a0b are supplied as standard in the plastic trays shown in figure 25. each tray contains a total of 18 power modules. the trays are self-stacking and each shipping box for the ebvw020a0b module contains 2 full trays plus one empty hold-down tray giving a total number of 36 power modules. tray specification material pet (1mm) max surface resistivity 10 9 -10 11 ? /pet color clear capacity 18 power modules min order quantity 36 pcs (1 box of 2 full trays + 1 empty top tray) open frame module tray base plate module tray figure 25. ebvw020 packaging tray
ge data sheet ebvw020a0b barracuda series; dc -dc converter power modules 36-75vdc input; 12.0vdc, 20.0a, 240w output july 22, 2013 ?2012 general electric company. all rights reserved. page 14 mechanical outline for ebvw 020a0b through-hole module dimensions are in millimeters and [inches]. tolerances: x.x mm ? 0.5 mm [x.xx in. ? 0.02 in.] (unless otherwise indicated) x.xx mm ? 0.25 mm [x.xxx in ? 0.010 in.] top view* top side label includes ge name, product designation and date code. side view *for optional pin lengths, see table 2, device coding scheme and options bottom view pin function 1 vi(+) 2 on/off 3 vi(-) 4 vo(-) 5 ? sense(-) 6 ? trim 7 ? sense(+) 8 vo(+) ? - optional pins, when including ?9? option, see table 2
ge data sheet ebvw020a0b barracuda series; dc -dc converter power modules 36-75vdc input; 12.0vdc, 20.0a, 240w output july 22, 2013 ?2012 general electric company. all rights reserved. page 15 mechanical outline for ebvw020a0b?h (bas eplate version) through-hole module dimensions are in millimeters and [inches]. tolerances: x.x mm ? 0.5 mm [x.xx in. ? 0.02 in.] (unless otherwise indicated) x.xx mm ? 0.25 mm [x.xxx in ? 0.010 in.] top view side view *for optional pin lengths, see table 2, device coding scheme and options bottom view* pin function 1 vi(+) 2 on/off 3 vi(-) 4 vo(-) 5 ? sense(-) 6 ? trim 7 ? sense(+) 8 vo(+) * bottom side label includes ge name, product designation and date ? - optional pins, when including ?9? option, see table 2
ge data sheet ebvw020a0b barracuda series; dc -dc converter power modules 36-75vdc input; 12.0vdc, 20.0a, 240w output july 22, 2013 ?2012 general electric company. all rights reserved. page 16 recommended pad layouts dimensions are in millimeters and (inches). tolerances: x.x mm ? 0.5 mm ( x.xx in. ? 0.02 in.) [unless otherwise indicated] x.xx mm ? 0.25 mm ( x.xxx in ? 0.010 in.) through-hole modules pin number pin name 1* vin(+) 2* on/off 3* vin(-) 4* vout(-) 5 ? sense(-) 6 ? trim 7 ? sense(+) 8* vout(+) ? - optional pins see table 2 hole and pad diameter recommendations: pin number hole dia mm [in] pad dia mm [in] 1, 2, 3, 5, 6, 7 1.6 [.063] 2.1 [.083] 4, 8 2.2 [.087] 3.2 [.126]
ge data sheet ebvw020a0b barracuda series; dc -dc converter power modules 36-75vdc input; 12.0vdc, 20.0a, 240w output july 22, 2013 ?2012 general electric company. all rights reserved. page 17 ordering information please contact your ge sales representative for pricing, availability and optional features. table 1. device codes product codes input voltage output voltage output current efficiency connector type comcodes ebvw020a0b1z 48v (36 ? 75vdc) 12v 20a 95.2% through hole 150019309 ebvw020a0b41z 48v (36 ? 75vdc) 12v 20a 95.2% through hole cc10916750 ebvw020a0b64z 48v (36 ? 75vdc) 12v 20a 95.2% through hole 150021139 EBVW020A0B641Z 48v (36 ? 75vdc) 12v 20a 95.2% through hole cc10917246 ebvw020a0b841z 48v (36 ? 75vdc) 12v 20a 95.2% through hole 150022307 ebvw020a0b941z 48v (36 ? 75vdc) 12v 20a 95.2% through hole cc10917236 ebvw020a0b984z 48v (36 ? 75vdc) 12v 20a 95.2% through hole 150022795 ebvw020a0b9641z 48v (36 ? 75vdc) 12v 20a 95.2% through hole 150026416 ebvw020a0b41-hz 48v (36 ? 75vdc) 12v 20a 95.2% through hole cc10916751 ebvw020a0b64-hz 48v (36 ? 75vdc) 12v 20a 95.2% through hole 150021143 ebvw020a0b641-hz 48v (36 ? 75vdc) 12v 20a 95.2% through hole 150020433 ebvw020a0b9641-hz 48v (36 ? 75vdc) 12v 20a 95.2% through hole cc10917231 ebvw020a0b41-phz 48v (36 ? 75vdc) 12v 20a 95.2% through hole cc10917233
ge data sheet ebvw020a0b barracuda series; dc -dc converter power modules 36-75vdc input; 12.0vdc, 20.0a, 240w output 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 july 22, 2013 ?2012 general electric company. all rights reserved. version 1.21 table 2. device options

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