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datasheet ds_e48s c 05012 _ 10302013 features ? high efficiency: 9 1.5 % @ 5.0 v/ 12 a ? size: 58.4mm x 22.8mm x 9 . 0 mm ( 2. 30 x 0. 90 x 0.3 5 ) ? standard footprint ? industry standard pin out ? fixed frequency operation ? input uv lo, output o cp, ovp, otp ? 150 0 v isolation ? basic insulation ? no minimum load required ? iso 900 1 , tl 9000, iso 14001, qs 9000, oh sas 18001 certified manufacturing facility ? ul/cul 60950 - 1 (us & canada) recognized , and tuv (en60950 - 1) certified applications ? tele com / datacom ? wireless networks ? optical network equipment ? server and data storage ? industrial / test ing equipment options ? positive on/off logic ? smd pin delphi series e48s c05012 , 6 0 w eighth brick family dc/dc power modules: 48v in, 5 v/12a out the delp hi series e 48s c 05012 eighth brick, 48v input, single output , isolated dc/dc converter is the latest offering from a world leader in power systems technology and manufacturing -- delta electronics, inc. this product family provides up to 82 .5 watt s in an ind ustry standard footprint and pinout. with c reative design technology and optimization of component placement , these converters possess outstanding electrical and thermal performances, as well as extremely high reliability under highly stressful operating c onditions. all models are fully protected from abnormal input/output voltage, current, and temperature conditions. the delphi series converters meet all safety requirements with basic insulation.
ds_e48sc05012_ 10302013 2 technical specificat ions ( t a =25c, airflow rate=300 lfm, v in =48vdc, nominal vout unless otherwise noted.) parameter notes and conditions e48s c0 5 012 (standard) min. typ. max. units absolute maximum ratings inpu t voltage continuous 75 vdc transient (100ms) 100ms 100 vdc operating temperature refer to figure 21 for measuring point - 40 1 13 c storage temperature - 55 125 c input/output isolation voltage 1500 vdc input characteristics op erating input voltage 36 75 vdc input under - voltage lockout turn - on voltage threshold 33 34 35 vdc turn - off voltage threshold 31 32 33 vdc lockout hysteresis voltage 1.5 2 2.5 vdc maximum input current 100% load, 36vin 2.1 a no - load input current 40 ma off converter input current 6 ma inrush current(i 2 t) 1 a 2 s input reflected - ripple current p - p thru 12h inductor, 5hz to 20mhz 20 ma input voltage ripple rejection 120 hz db output characteristics output voltage set point vin=48v, io=io.max, tc=25c 4.9 1 0 5.0 5.0 9 0 vdc output voltage regulation over load io=io,min to io,max 3 10 mv over line vin=36v to 75v 3 10 mv over temperature tc= - 40c to 85 c 15 mv total output voltage range over sample load, l ine and temperature 4. 90 5. 10 v output voltage ripple and noise 5hz to 20mhz bandwidth peak - to - peak full load, 1f ceramic, 10f tantalum 50 100 mv rms full load, 1f ceramic, 10f tantalum 1 5 30 mv operating output current range 0 12 a outpu t dc current - limit inception output voltage 10% low 110 1 4 0 % dynamic characteristics output voltage current transient 48v, 1 0f tan & 1f ceramic load cap, 0.1 a/s positive step change in output current 50% io.max to 75% io.max 17 0 mv nega tive step change in output current 75% io.max to 50% io.max 17 0 mv settling time (within 1% vout nominal) 2 00 us turn - on transient start - up time, from on/off control 12 ms start - up time, from input 12 ms maximum output capacitance full load; 5% overshoot of vout at startup 5000 f efficiency 100% load 91.5 % 60% load 9 1 % isolation characteristics input to output 1500 vdc isolation resistance 10 m isolation capacitance 3300 pf feature characteristics switching frequency 350 khz on/off control , negative remote on/off logic logic low (module on) von/off at ion/off=1.0ma 0 0.7 v logic high (module off) von/off at ion/off=0.0 a 2 .4 1 8 v on/off control, positive remote on/off logic logic low (module off) von/off at ion/off=1.0ma 0 0.7 v logic high (module on) von/off at ion/off=0.0 a 2 .4 1 8 v on/off current (for both remote on/off logic) ion/off at von/off=0.0v 1 ma leakage current (for both remote on/off logic) logic high , von/off=1 5 v 50 ua output voltage trim range across pins 9 & 5, pout Q max rated power - 10% 10% % output voltage remote sense range pout Q max rated power 10 % output over - voltage protection over full temp range; % of nominal vout 6 v general s pecifications mtbf io=80% of io, max; 300lfm @25c 3.3 m hours weight 19.6 grams over - temperature shutdown refer to figure 21 for measuring point 1 30 c
ds_e48sc05012_ 10302013 3 electrical character istics curves figure 1: efficiency vs. lo ad current for minimum, nominal, and maximum input voltage at 25c figure 2: power dissipation vs. load current for minimum, nominal, and maximum input voltage at 25c. figure 3: typical full load input characteristics at r oom temperature 36vin 48vin 75vin 36vin 48vin 75vin 75 77 79 81 83 85 87 89 91 93 1.5 3 4.5 6 7.5 9 10.5 12 input current (a) efficiency (%) 1.6 2.1 2.6 3.1 3.6 4.1 4.6 5.1 5.6 6.1 1.5 3 4.5 6 7.5 9 10.5 12 output current (a) loss (w) 0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 30 35 40 45 50 55 60 65 70 75 input voltage (v) input current (a)
ds_e48sc05012_ 10302013 4 electrical character istics curves for negative remote on/off logic figure 4: turn - on transient at full rated load current ( cc mode load ) ( 5 ms/div). vin=48v . top trace: vout , 2 v/div; bottom trace: on/off input , 5 v/div figure 5 : turn - on transient at zero load current ( 5 ms/div). vin=48v .top trace: vout , 2 v/div; bottom trace: on/off input , 5 v/div for positive remote on/off logic figure 6 : turn - on transient at full rated load current ( cc mode load ) ( 5 ms/div). vin=48v . top trace: vout , 2 v/div; bottom trace: on/off input , 5 v/div figure 7: turn - on transient at zero load current ( 5 ms/div). vin=48v . top trace: vout , 2 v/div , bottom trace: on/off input , 5 v/div
ds_e48sc05012_ 10302013 5 electrical character istics curves figure 8: output voltage response to step - change in load current (75% - 50% - 75% of io, max; di/dt = 0.1a/s). load cap: 10f, tantalum capacitor and 1f ceramic capacitor. top trace: vout ( 10 0 mv/div , 200us /div ), bottom trace: i out ( 5 a/div). scope measurement should be made using a bnc cable (length shorter than 20 inches). position the load between 51 mm to 76 mm (2 inches to 3 inches) from the module figure 9: output voltage response to step - change in load current (75% - 50% - 75% of io, max; di/dt = 2.5a/s). load cap: 330 f, 35m ? e sr solid electrolytic capacitor and 1f ceramic capacitor. top trace: vout ( 100 mv/div , 200us /div ), bottom trace: i out ( 5 a/div). scope measurement should be made using a bnc cable (length shorter than 20 inches). position the load between 51 mm to 76 mm (2 inches to 3 inches) from the module figure 10: test set - up diagram showing measurement points for input terminal ripple current and input reflected ripple current. note: measured input reflected - ripple current with a simulated source inductan ce (l test ) of 12 h. capacitor cs offset possible battery impedance. measure current as shown above
ds_e48sc05012_ 10302013 6 electrical character istics curves figure 1 1: input terminal ripple current, i c , at full rated output current and nominal input voltage with 12h source imp edance and 33f electrolytic capacitor ( 500 ma/div , 2us /div ) figure 1 2: input reflected ripple current, i s , through a 12h source inductor at nominal input voltage and rated load current ( 2 0 ma/div , 2us /div ) figure 1 3: output voltage noise and ripple measurement test setup strip copper vo(-) vo(+) 10u 1u scope resistive load
ds_e48sc05012_ 10302013 7 electrical character istics curves figure 14 : output voltage ripple at nominal input voltage and rated load current (io= 12 a) ( 2 0 mv/div , 2us /div ) load capacitance: 1f ceramic capacitor and 10f tantalum capacitor. bandwidth: 20 mhz. scope measurements should be made using a bnc cable (length shorter than 20 inches). position the load between 51 mm to 76 mm (2 inches to 3 inches) from the module figure 15 : output voltage vs. load current s howing typical current limit curves and converter shutdown points 0 1 2 3 4 5 6 0 3 6 9 12 15 18 output current (a) output voltage (v)
ds_e48sc05012_ 10302013 8 ? the input source must be insulated from the ac mains by reinforced or double insulation. ? the input terminals of the module are not operator accessible. ? a selv reliability test is conducted on the system where the module is used , in combination with the module, to ensure that under a single fault, hazardous vo ltage does not appear at the modules output. when installed into a class ii equipment (without grounding), spacing consideration should be given to the end - use installation, as the spacing between the module and mounting surface have not been evaluated. the power module has extra - low voltage (elv) outputs when all inputs are elv. this power module is not internally fused. to achieve optimum safety and system protection, an input line fuse is highly recommended. the safety agencies require a fuse with 5 a maximum rating to be installed in the ungrounded lead. a lower rated fuse can be used based on the maximum inrush transient energy and maximum input current. soldering and cleaning considerations post solder cleaning is usually the final board assembly process before the board or system undergoes electrical testing. inadequate cleaning and/or drying may lower the reliability of a power module and severely affect the finished circuit board assembly test. adequate cleaning and/or drying is especially impor tant for un - encapsulated and/or open frame type power modules. for assistance on appropriate soldering and cleaning procedures, please contact deltas technical support team. design consideration s input source impedance the impedance of the input source connecting to the dc/dc power modules will interact with the mo dules and affect the stability. a low ac - impedance input source is recommended. if the source inductance is more than a few h, we advise adding a 10 to 100 f electrolytic capacitor (esr < 0.7 at 100 khz) mounted close to the input of the module to impr ove the stability. layout and emc considerations deltas dc/dc power modules are designed to operate in a wide variety of systems and applications. for design assistance with emc compliance and related p w b layout issues, please contact deltas technical support team. an external input filter module is available for easier emc compliance design. application notes to assist designers in addressing these issues are pending release. safety considerations the power module must be installed in compliance wit h the spacing and separation requirements of the end - users safety agency standard, i.e., ul60950 - 1, csa c22.2 no. 60950 - 1 2nd and iec 60950 - 1 2nd : 2005 and en 60950 - 1 2nd: 2006+a11+a1: 2010 , if the system in which the power module is to be used must meet safety agency requirements. basic insulation based on 75 vdc input is provided between the input and output of the module for the purpose of applying insulation requirements when the input to this dc - to - dc converter is identified as tnv - 2 or selv. an ad ditional evaluation is needed if the source is other than tnv - 2 or selv. when the input source is selv circuit , the power module meets selv (safety extra - low voltage) requirements. if the input source is a hazardous voltage which is greater than 60 vdc an d less than or equal to 75 vdc, for the modules output to meet selv requirements, all of the following must be met:
ds_e48sc05012_ 10302013 9 features description s over - current protection the modules include an internal output over - current protection circuit, which will endure current limiting for an unlimited duration during output overload. if the output current exceeds the ocp set point, the modules will automatically shut down (hiccup mode) . the modules will try to r estart after shutdown. if the overload condition still exists, the module will shut down again. this restart trial will continue until the overload condition is corrected. over - voltage protection the modules include an internal output over - voltage protect ion circuit, which monitors the voltage on the output terminals. if this voltage exceeds the over - voltage set point, the module will shut down (hiccup mode) the modules will try to restart after shutdown. if the over voltage condition still exists, the module will shut down again. this restart trial will continue until the over voltage condition is corrected. over - temperature protection the over - temperature protection consists of circuitry that provides protection from thermal damage. if the temperature exceeds the over - temperature threshold the module will shut down. t he module will restart if the temperature is within specification. remote on/off the remote on/off feature on the module can be either negative or positive logic. negative logic turns th e module on during a logic low and off during a logic high. positive logic turns the modules on during a logic high and off during a logic low. remote on/off can be controlled by an external switch between the on/off terminal and the v i ( - ) terminal. the switch can be an open collector or open drain. for negative logic i f the remote on/off feature is not used, please short the on/off pin to vi( - ). for pos i tive logic i f the remote on/off feature is not used, please leave the on/off pin to floating . fig ure 16 : remote on/off implementation remote sense remote sense compensates for voltage drops on the output by sensing the actual output voltage at the point of load. the voltage between the remote sense pins and the output terminals must not exceed the o utput voltage sense range given here: [vo(+) C vo( C )] C [sense(+) C sense( C )] 10% v out this limit includes any increase in voltage due to remote sense compensation and output voltage set point adjustment (trim). figure 17 : effective circuit configuration for remote sense operation if the remote sense feature is not used to regulate the output at the point of load, please connect sense(+) to vo(+) and sense( C ) to vo( C ) at the module . the output voltage can be increased by both the remote sense and the trim; however, the maximum increa se is the larger of either the remote sense or the trim, not the sum of both. when using remote sense and trim, the output voltage of the module is usually increased, which increases the power output of the module with the same output current. care shou ld be taken to ensure that the maximum output power does not exceed the maximum rated power. vo(+) vi(+) vo(-) sense(-) sense(+) vi(-) on/off vi(-) vi(+) vo(-) vo(+) sense(+) sense(-) resistance contact contact and distribution losses
ds_e48sc05012_ 10302013 10 features description s (con.) output voltage adjustment (trim) to increase or decrease the output voltage set point, the modules may be connected with an extern al resistor between the trim pin and either the sense(+) or sense( - ). the trim pin should be left open if this feature is not used. figure 18 : circuit configuration for trim - down (decrease output voltage) if the external resistor is connected between the trim and sense ( - ) pins, the output voltage set point decreases (fig. 18 ). the external resistor value required to obtain a percentage of output voltage change ex. when trim - down - 1 0%( 5 v0. 9 = 4 .5v) figure 19 : circuit configuration for trim - up (increase output voltage) if the external resistor is connected between the trim and sense ( + ) the output voltage set point increases (fig. 19 ). the external resistor value require d to obta in a percentage output voltage change ex. when trim - up +10%( 5 v1.1=5.5v) the output voltage can be increased by both the remote sense and the trim, however the maximum increase is the larger of either the remote sense or the trim, not the sum of both. when using remote sense and trim, the output voltage of the module is usually increased, which increases the power output of the module with the same output current. care should be taken to ensure that the maximum output powe r of the module remains at or below the maximum rated power. ? ? ? ? ? ? ? k down rtrim 2 . 10 511 ? ? ? ? ? ? ? k down rtrim 9 . 40 2 . 10 10 511 ? ? ? ? ? ? ? ? ? ? ? k up rtrim 2 . 10 511 1.225 ) (100 vo 11 . 5 ? ? ? ? ? ? ? ? ? ? ? ? k up rtrim 168 2 . 10 10 511 10 1.225 ) 10 (100 5 11 . 5
ds_e48sc05012_ 10302013 11 thermal consideratio ns thermal management is an important part of the system design. to ensure proper, reliable operation, sufficient cooling of the power module is needed over the entire temp erature range of the module. convection cooling is usually the dominant mode of heat transfer. hence, the choice of equipment to characterize the thermal performance of the power module is a wind tunnel. thermal testing setup deltas dc/dc power modules are characterized in heated vertical wind tunnels that simulate the thermal environments encountered in most electronics equipment. this type of equipment commonly uses vertically mounted circuit cards in cabinet racks in which the power modules are mount ed. the following figure shows the wind tunnel characterization setup. the power module is mounted on a test pwb and is vertically positioned within the wind tunnel. the space between the neighboring pwb and the top of the power module is constantly kept at 6.35mm (0.25). figure 20 : wind tunnel test setup thermal derating heat can be removed by increasing airflow over the module. to enhance system reliability; the power module should always be operated below the maximum operating temperature. if the temperature exceeds the maximum module temperature, reliability of the unit may be affected. thermal curves figure 21 : hot spot temperature measured point . the allowed maximum hot spot temperature is defined at 1 13 figure 2 2: output load vs. ambie nt temperature and air velocity @ v in =48v (transverse orientation) note: wind tunnel test setup figure dimensions are in millimeters and (inches) 12.7 (0.5) module air flow 50.8 (2.0) facing pwb pwb air velocity and ambient temperature measured below the module e48sc05012(standard) output current vs. ambient temp erature and air velocity @ vin = 48v (t ransverse orientation) 0 2 4 6 8 10 12 25 30 35 40 45 50 55 60 65 70 75 80 85 amb ien t te mp era tu re ( ) ou tpu t c urre nt(a) natural conve ction 100lfm 200lfm
ds_e48sc05012_ 10302013 12 pick and place locat ion surf ace - mount tape & reel recommended pad layo ut (smd)
ds_e48sc05012_ 10302013 13 lea ded (sn/ pb ) process recommend temp. profile note: the temperature refers to the pin of e48sr, measured on the pin +vout joint. lead free (sac) proc ess recommend temp. profile note: the temperature refers to the pin of e48sr, measured on the pin +vout joint. temp . time 150 200 100~140 sec. time limited 90 sec. above 217 217 preheat time ramp up max. 3 ramp down max. 4 peak temp. 240 ~ 245 25
ds_e48sc05012_ 10302013 14 mechanical drawing s urface - mount module t hrough - hole module pin no. name function 1 2 3 4 5 6 7 8 +vin on/off - vin - v out - sense trim +sense +vout positive input voltage remote on/off negative input voltage negative output voltage negative remote sense output voltage trim positive remote sense positive output voltage
ds_e48sc05012_ 10302013 15 part numbering syste m e 48 s c 050 12 n r f a typ e of product input voltage number of outputs product series output voltage output current on/off logic pin length /type option code e - eighth brick 48 - 36~75v s - single c - improved e48sr series 050 - 5.0 v 12 - 12 a n - negative p - positive r - 0.170 n - 0.145 m - smd f - rohs 6/6 (lead free) space - rohs 5/6 a - standard functions model list model name input output eff @ 100% load e48sc05012nrfa 36v~75v 2.1a 5.0v 12a 91.5% e48sc05012nn a 36v~75v 2.1a 5.0v 12a 91.5% default remote on/off logic is negative and pin length is 0.170 for different remote on/off logic and pin length, please refer to part numbering system above or contact your local sales office . c ontact: www.deltaww.com/dcdc usa: tele phone: east coast: 978 - 656 - 3993 west coast: 510 - 668 - 5100 fax: (978) 656 3964 email: dcdc@delta - corp.com europe: telephone: +31 - 20 - 655 - 0967 fax: +31 - 20 - 655 - 0999 email: dcdc @delta - es. com asia & the rest of world : telephone: +886 3 4526107 e xt. 6220 ~6224 fax: +886 3 4513485 email: dcdc@delta.com.tw warranty delta offers a two ( 2) year limited warranty. complete warranty information is listed on our web site or is available upon request from delta. information furnished by delta is believed to be accurate and reliable. however, no responsibility is assumed by delta for its use, nor for any infringements of patents or other rights of third parties, which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of delta. delta reserves the right to revise these specifications at any time, without notice .

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