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datasheet ds_ e36sr12004 _ 10292013 features ? high efficiency: 90.5% @ 1 2 v/4a ? size: 58.4x22.8x8.73 mm (2. 30 x 0.90 x0.3 4 ) ? standard footprint ? industry standard pin out ? fixed frequency operation ? input uvlo, output o cp, ovp, otp ? 1500v isolation and basic insulation ? iso 900 1 , tl 9000, iso 14001, qs9000, ohsas18001 certified manufacturing facility ? ul/cul 60950 - 1 (us & canada) recognized applications ? telecom/datacom ? wireless networks ? optical network equipment ? server and data storage ? indu strial/tes t equipment options ? positive on/off logic delphi e36sr series dc/dc power modules: 18~60 in, 12 v/4a out, 48 w the delphi e36sr series, eighth brick sized, 24v/48v input, single output , isolated dc/dc converte r, is the latest offering from a world leader in power system technology and manufacturing D delta electronics, inc. the e36sr 12 v provides up to 48 watts of power in an industry standard footprint and pinout. with c reative design technology and optimizatio n of component placement , these converters possess outstanding electrical and thermal performances, as well as extremely high reliability under highly stressful operating conditions. all models are fully protected from abnormal input/output voltage, curren t, and temperature conditions. the delphi series converters meet all safety requirements with basic insulation.
ds_e36sr12004_ 10292013 2 technical specificat ions ( t a =25c, airflow rate=300 lfm, v in = 24/ 48vdc, nominal vout unless otherwise noted.) parameter notes and conditions e36s r1 200 4 min. typ. max. units absolute maximum ratings input voltage continuous 60 vdc transient (100ms) 100ms 100 vdc operating a mbient temperature - 40 85 c storage temperature - 55 125 c input/output isolation voltage 1500 vdc input characteristics operating input voltage 18 60 vdc input under - voltage loc kout turn - on voltage threshold 16 17 18 vdc turn - off voltage threshold 14 15 16 vdc lockout hysteresis voltage 1 2 3 vdc maximum input current 100% load, 18 vin 3. 5 a no - load input current 30 60 12 0 ma off converter input current 3 10 ma inrush current (i 2 t) 1 a 2 s input reflected - ripple current p - p thru 12h inductor, 5hz to 20mhz 2 0 ma input voltage ripple rejection 120 hz 50 db output characteristics output voltage set point vin=48v, io=io.max, tc=25c 11.8 2 0 12.000 12.1 8 0 vdc output voltage regulation over load io=io,min to io,max 24 48 mv over line vin= 18 v to 60 v 24 48 mv over temperature tc= - 40c to 85c 180 mv total output voltage range over sample load, line and temperature 11. 8 12. 2 vdc output v oltage ripple and noise 5hz to 20mhz bandwidth peak - to - peak full load, 1f ceramic, 10f tantalum 50 1 00 mv rms full load, 1f ceramic, 10f tantalum 25 mv operating output current range 0 .4 4 a output over current protection 4.4 5.6 a dyna mic 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 200 4 0 0 mv negative step change in output current 75% io.max to 50% io.max 200 4 0 0 mv settling time (within 1% vout nominal) 1 00 us turn - on transient start - up time, from on/off control 15 25 ms start - up time, from input 15 25 ms maximum output capacitance full load; 5% overshoot of vout at startup 2 0 00 f efficien cy io from2.8a o 4a vin from 18v to 55v 89.5 . % isolation characteristics input to output 1500 vdc isolation resistance 10 m isolation capacitance 1000 pf feature characteristics switching frequency 3 0 0 khz on/off co ntrol , negative remote on/off logic logic low (module on) von/off at ion/off=1.0ma 0 0.8 v logic high (module off) von/off at ion/off=0.0 a 3 12 v on/off control, positive remote on/off logic logic low (module off) von/off at ion/off=1.0ma 0 0.8 v logic high (module on) von/off at ion/off=0.0 a 3.5 12 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=12v 50 ua output over - v oltage protection over full temp range; 13.2 16.8 v general specifications mtbf io= 10 0% of io, max; ta=25c , airflow rate=200flm 6.48 m hours weight 22 .9 grams over - temperature shutdown (hot spot) refer to figure 2 1 for hot spot location (48 vin,80% io , 200lfm,airflow from vin - to vin + ) 12 4 c over - temperature shutdown (ntc resistor) refer to figure 21 for ntc resistor location 120 c n ote: please attach thermocouple on ntc resistor to test otp function, the hot spots temperature is just for reference.
ds_e36sr12004_ 10292013 3 electrical character istics curves figure 1: efficiency vs. load current for minimum, nominal, and maximum input voltage at 25c, 300lfm airflow. figure 2: power dissipation vs. load current for minimum, nominal, and maximum input v oltage at 25c, 300lfm airflow. figure 3: typical full load input characteristics at 25c 72 74 76 78 80 82 84 86 88 90 92 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 4.0 4.4 output current(a) efficiency(%). 18v 24v 55v 48 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 4.0 4.4 output current(a) loss(w) 18v 24v 55v 48v 0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 12 17 22 27 32 37 42 47 52 57 input voltage(v) input current(a)
ds_e36sr12004_ 10292013 4 electrical character istics curves for input voltage on/off figure 4: turn - on transient at full rated load curre nt ( 5 ms/div). vin=48v. top trace: inpu t voltage , 20 v/div; bottom trace: vout , 5 v/div figure 5: turn - on transient at min load current ( 5 ms/div). vin=48v. top trace: input voltage , 20 v/div; bottom trace: vou t , 5 v/div for negative on/off logic figure 6 : turn - on transient at full rated load current ( 5 ms/div) for negative on/off mode. vin=48v. top trace: vout , 5 v/div; bottom trace: on/off inpu t, 5 v/div figure 7: turn - on transient at min load current ( 5 ms/div) for negative on/off mode. vin=48v. top trace: vout , 5 v/div; bottom trace: on/off input , 5 v/div
ds_e36sr12004_ 10292013 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. 0 1a/s). load cap: 10f tantalum capacitor and 1f ceramic capacitor. top trace: vout ( 0. 1 v/div , 1ms /div ), bottom trace: iout ( 1 a/div). scope measurement should be made using a bnc cable (length shorter than 20 inches). position the load b etween 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: 47f, 35m ? esr solid electrolytic capacitor and 1f ceramic capacitor. top trace: vout ( 0. 1 v/div, 1m s/div ), bottom trace: iout ( 1 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 f igure 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 inductance (l test ) of 12 h. capacitor cs offset possible b attery impedance. measured current as shown below figure 1 1: input terminal ripple current, i c , at full rated output current and nominal input voltage with 12h source impedance and 33f electrolytic capacitor ( 200 ma/div , 2us/div )
ds_e36sr12004_ 10292013 6 electrical character istics curves figure 1 2: input reflected ripple current, i s , through a 12h source inductor at nominal input voltage and rated load current ( 10 0 ma/div , 2us/div ) figure 1 3: output voltage noise and ripple measurement test setup figure 14 : output voltage ripple at nominal input voltage and rated load current (io= 4 a) ( 2 0 mv/div , 2us /div ) load capacitance: 1f ceramic capacitor and 10f tantalum capacitor. bandwidth: 20 mhz. scope measurements should be made us ing 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 showing typical current limit curves and converter shutdown points 2 3 4 5 6 7 8 9 10 11 12 13 0.4 0.9 1.4 1.9 2.4 2.9 3.4 3.9 4.4 4.9 5.4 5.9 output current(a) output voltage(v) strip copper vo(-) vo(+) 10u 1u scope resistive load
ds_e36sr12004_ 10292013 7 design consideration s input source impedance the impedance of the input source connecting to the dc/dc power modules will interact with the modu les 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 layout and emc considerations deltas dc/dc power modules are designed to operate layout issues, please contact deltas technical su safety considerations the power module must be installed in compliance wit h the spacing and separation requirements of the end - users safety agency standard, modules output to meet selv requirements, all of the ? the input source must be insulated from the ac mains by reinforced or double insulation. ? the input terminals of the module are not operat or 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 voltage does not appear at the modules soldering and cleaning considerations post solder cleaning is usually the final board assembly process before the board or system undergoes electrical testing. in adequate 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 are especially important for un - encapsulated and/or open frame type power modules. for assistance on appropriate soldering and cleaning procedures, please contact deltas technical support
ds_e36sr12004_ 10292013 8 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 restart after shutdown. if the overload condition still ex ists, 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 protection circuit, which monitors the voltage on the output te rminals. 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 fault condition still exists, the module will shut down again. this restart trial will continue un til the fault 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 try to restart after shutdown. if the over - temperature condition still exists during restart, the module will shut down again. this restart trial will continue until 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 the module on during a logic low and off during logic high. positive logic turns the modules on during logic high and off during logic low. remote on/off can be controll ed 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 re mote on/off feature is not used, please leave the on/off pin floating . figure 1 6 : 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 voltag e between the remote sense pins and the output terminals must not exceed the output 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 figure 1 7 : effective circuit configuration for remote sense operation if the remote sense feature is not used to regulate the output at the point of load, pl ease connect sense(+) to vo(+) and sense( C ) to vo( C ) at the module . the output voltage can be increased by the remote sense; when using the remote sense 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 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_e36sr12004_ 10292013 9 output voltage adjustment (trim) to increase or decrease the output voltage set point, connect an external 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 1 8 : cir cuit 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 v oltage change % is defined as: ex. when trim - down - 2 0% ( 12 v0. 8 = 9.6 v) figure 1 9 : circuit configuration for trim - up (increase output voltage if the external resistor is connected between the trim an d sense ( + ) the output voltage set point increases (fig. 19 ). the external resistor value require d to obtain a percentage output voltage change % is defined as: ex. when trim - up +10% ( 12 v1.1= 13.2 v) the out put 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 incre ased, which increases the power output of the module with the same output current. care should be taken to ensure that the maximum output power of the module remains at or below the maximum rated power. ? ? ? ? ? ? ? k down rtrim 10 510 ? ? ? ? ? ? ? k down rtrim 5 . 15 10 20 510 ? ? ? ? ? ? ? ? ? ? ? k up rtrim 10 510 1.225 ) (100 vo 1 . 5 ? ? ? ? ? ? ? ? ? ? ? ? k up rtrim 55 . 488 10 10 510 10 1.225 ) 10 (100 12 1 . 5
ds_e36sr12004_ 10292013 10 thermal consideratio ns thermal management is an important part of the system design. to ensure proper, reliable operati on, sufficient cooling of the power module is needed over the entire temperature 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 mod ule is a wind tunnel. thermal testing setup deltas dc/dc power modules are characterized in 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 & ntc resistor temperature measured point s . f igure 2 2 : output c urrent vs. a mbient t emperature and air velocity@vin= 24 v ( transverse o rientation ,a irflow from vin - to vin+ ) figure 2 3 : output c urrent vs. a mbient t emperature and air velocity@vin= 48 v ( transverse o rientation , a irflow from vin - to vin+ ) air flow module pwb 50.8(2.00") air velocity and ambient temperature sured below the module fancing pwb note: wind tunnel test setup figure dimensions are in millimeters and (inches) hot spot ntc resistor airflow e36sr12004(standard) output current vs. ambient temperature and air velocity @vin = 24v (transverse orientation) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 25 30 35 40 45 50 55 60 65 70 75 80 85 ambient temperature ( ) output current (a) natural convection 100lfm 200lfm 300lfm 400lfm e36sr12004(standard) output current vs. ambient temperature and air velocity @vin = 48v (transverse orientation) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 25 30 35 40 45 50 55 60 65 70 75 80 85 ambient temperature ( ) output current (a) natural convection 100lfm 200lfm 300lfm
ds_e36sr12004_ 10292013 11 mechanical drawing (without heat spreader) note: have a typical height of the lowest component (who ha s to dissipate) of 7.25mm with a tolerance plus max height module/minus 0 mm. pin no. name function 1 2 3 4 5 6 7 8 +vin on/off - vin - vout - 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 pin specificat ion: pins 1 - 3 , 5 - 7 1.0 0 mm (0.040) diameter pins 4 & 8 2. 1.50 mm (0.0 59 ) diameter note all pins are copper alloy with matte - tin(pb free) plated over nickel underplating.
ds_e36sr12004_ 10292013 12 part numbering system e 36 s r 120 0 4 n k f a form factor input voltage numb er of outputs product s e ries output voltage output current on/off logic pin length o ption c ode e - eig h th brick 24/ 48 - 18 v~ 60 v s - single r C regular product 12 v 4 a n - negative k - 0.11 space - rohs 5/6 f - rohs 6/6 (lead free) a - standard functions c ontact: www.deltaww.com/dcdc usa: telephone: east coast: 978 - 656 - 3993 west coast: 510 - 668 - 5100 fax: (978) 656 3964 email: dcdc@delta - corp.com europe: p hone: +31 - 20 - 655 - 0967 fax: +31 - 20 - 655 - 0999 email: dcdc @ delta - es.com asia & the rest of world : telephone: +886 3 4526107 x 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 it s use, nor for any infringements of paten ts 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 specificatio ns at any time, without notice .

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