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datasheet ds_s36se3r305_10082013 features ? high efficiency: 8 6.5% @ 3.3 v/ 5 a ? industry standard 1x 1 pinout ? size: 27.9x 24.4x8. 7 mm (1.10 x 0.96 x 0. 3 4 ) ? fixed fr equency operation ? 4 :1 ultra wide input voltage range ? input uvlo ? output ocp , ovp and otp ? monotonic startup into normal and pre - bias loads ? output voltage trim 10% ? 2250v isolation and b asic insulation ? no minimum load required ? smt and through - hole versions ? is o 900 1 , tl 9000, iso 14001, qs9000, ohsas18001 certified manufacturing facility ? ul/cul 60950 - 1 (us & canada) recognized applications ? optical transport ? data networking ? communications, including wireless and traditional telecom ? servers options ? positive , negative, or no on/off ? otp and output ovp , ocp mode, auto - re start (default) or latch - up ? surface mounted pins ? short pin lengths delphi s 36 se, 1 7 w 1x1 brick series dc/dc power modules: 18~75v in, 3.3 v/ 5 a out the delphi s 36 s e series , 1x1 sized, 18~7 5vin, single output , isolated dc/dc converters are the latest offering from a world leader in power systems technology and manufacturing inc. this product family is available in either a surface mount or through - hole package and provides up to 17 watts of power or 5 a of output current ( 3.3 v and below ) in a standard 1x1 form factor (1.1 0 x0.96x0.3 3 ). the pinout is com patible with the popular industry standard 1x 2 sized products. with c reative design technology and optimization of component placement , these converters possess outstanding electrical and thermal performance, as well as extremely high reliability under hig hly stressful operating conditions. the s36se 3.3 v module could provide full output power without any airflow up to 85 ? c ambient temperature while keeping the component junction temperatures under most derating guidelines. typical efficiency of 3.3v/5a mod ule is better than 86.5% and all modules are fully protected from abnormal input/output voltage, current, and temperature conditions.
ds_s36se3r305_10082013 2 technical specificat ions t a = 25c, airflow rate = 3 00 lfm, v in = 48 v dc, nominal vout unless otherwise noted. parameter notes and cond itions s 36 se 3r305 (standard) min. typ. max. units absolute maximum ratings input voltage continuous 80 vdc transient(100ms) 100ms 100 vdc operating temperature refer to figure 20 for measuring point - 40 123 c storage temperature - 55 125 c input/output isolation voltage 2250 vdc input characteristics operating input voltage 18 75 vdc input under - voltage lockout turn - on voltage threshold 16 17 18 vdc turn - off voltage threshold 15 16 17 vdc lockout hysteresi s voltage 0.5 1 1.5 vdc maximum input current 100% load, 18vin 1.3 a no - load input current 20 ma off converter input current 5 ma inrush current (i 2 t) 1 a 2 s input reflected - ripple current p - p thru 12h inductor, 5hz to 20mhz 8 ma input voltage ripple rejection 120 hz 60 db output characteristics output voltage set point vin=48v, io=io.max, tc=25c 3.25 3.3 3.35 vdc output voltage regulation over load io=io, min to io, max 3 10 mv over line vin= 18 v to 75v 3 10 mv o ver temperature tc= - 40c to 100c 33 mv total output voltage range over sample load, line and temperature 3.2 3.4 v output voltage ripple and noise 5hz to 20mhz bandwidth peak - to - peak full load, 1f ceramic, 10f tantalum 60 mv rms full load, 1f ceramic, 10f tantalum 10 mv operating output current range 0 5 a output dc current - limit inception output voltage 10% low 110 120 130 % dynamic characteristics output voltage current transient 48v, 10f tan & 1f ceramic load cap, 0.1a/ s positive step change in output current 50% io.max to 75% io.max 150 mv negative step change in output current 75% io.max to 50% io.max 150 mv settling time (within 1% vout nominal) 300 u s turn - on transient start - up time, from on/off control 16 25 ms start - up time, from input 16 25 ms maximum output capacitance full load; 5% overshoot of vout at startup 1000 f efficiency 100% load 86.5 % 60% load 8 5 .5 % isolation characteristics input to output 2250 vdc isolation resistance 10 m isolation capacitance 1000 pf feature characteristics switching frequency 450 khz on/off control, negative remote on/off logic logic low (module on) von/off - 0.7 0.8 v logic high (module off) von/off 2 18 v on/off control, pos itive remote on/off logic logic low (module off) von/off - 0.7 0.8 v logic high (module on) von/off 2 18 v on/off current (for both remote on/off logic) ion/off at von/off=0.0v 0.25 ma leakage current (for both remote on/off logic) logic high , von/off=15v 30 ua output voltage trim range across trim pin & +vo or C vo, pout Q max rated - 10% 10% % output over - voltage protection over full temp range; 3.79 5 v general specifications mtbf io=80% of io, max; t a = 25 c , 300lfm 5.04 m hours weight 9 grams over - temperature shutdown refer to figure 20 for measuring poin t 128 c
ds_s36se3r305_10082013 3 electrical character istics curves figure 1 : efficiency vs. load current for minimum, nominal, and maximum input voltage at 25c . figure 2 : power dissipation vs. load current for minimum, nominal, and m aximum input voltage at 25c . figure 3 : typical full load input characteristics at room temperature . figure 4 : (for negative remote on/off logic) turn - on transient at full rated load current (5 ms/di v). vin=48v. top trace: vout , 1 v/div; bottom trace: on/off input, 5 v/div . fig ure 5 : (for negative remote on/off logic) turn - on transient at zero load current ( 5 ms/div). vin=48v. top trace: vout , 1 v/div , bottom tr ace: on/off input , 5v/div . figure 6 : (for positive remote on/off logic) turn - on transient at full rated load current ( 5 ms/div). vin=48v. top trace: vout , 1 v/div; bottom trace: on/off input , 5v/div . 0 0.2 0.4 0.6 0.8 1 1.2 1.4 15 20 25 30 35 40 45 50 55 60 65 70 75 input voltage(v) input current(a)
ds_s36se3r305_10082013 4 e lectrical characteri stics curves (con.) figure 7: (for positive remote on/off logic) turn - on transient at zero load current ( 5 ms/div). vin=48v. top trace: vout , 1 v/div; bottom trace: on/off input , 5v/div . figure 8 : output voltage response to step - change in load cur rent (75% - 50% of io, max; di/dt = 0.1a/s). load cap: 10f tantalum capacitor and 1f ceramic capacitor. top trace: vout ( 2 00 mv/div, 1 00 us /div ), bottom trace: iout ( 2 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 ( 50 % - 75 % of io, max; di/dt = 0.1a/s). load cap: 10f tantalum capacitor and 1f c eramic capacitor. top trace: vout ( 2 00 mv/div, 1 00 us /div ), bottom trace: iout (2a/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 . fig ure 1 0 : 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 bat tery impedance. measure current as shown below.
ds_s36se3r305_10082013 5 electrical character istics curves figure 11 : input terminal ripple current, i c , at full rated output current and nominal input voltage with 12h source impedance and 33f electrolytic capacitor ( 10 0 m a /div , 2 us /div ) figure 1 2: input reflected ripple current, i s , through a 12h source inductor at nominal input voltage and rated load current (20 ma/div , 2us /div ) figure 1 3: output voltage noi se and ripple measurement test setup figure 14 : output voltage ripple at nominal input voltage and rated load current (io= 5 a) (5 0 mv/div , 5us /div ).load capacitance: 1f ceramic capacitor and 10f tantalum capacitor. bandwidth: 20 mhz. scope measurements s hould 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 showing typical current limit curves and con verter shutdown points strip copper vo(-) vo(+) 10u 1u scope resistive load
ds_s36se3r305_10082013 6 design consideration s input source impedance the impedance of the input source connecting to the dc/dc power modules will interact with the modules 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 capacit or (esr < 0.7 at 100 khz) mounted close to the input of the module to improve 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 em c compliance and related pwb layout issues, please contact deltas technical support team. an external input filter module is available for easier emc compliance design. below is the example of using delta latest fl75 l07 a input filter tested with s36se se ries to meet class b in cisspr 22. schematic and components list c1 is 22 uf/100v, low esr aluminum cap; c2 is 2.2 uf ceramic cap; c3 is 22n f ceramic capacitor; fl75 l07 a is delta input emi filter module. test resu lt test result is in compliance with cispr 22 class b, which is shown as below: vin=48v, po=15w, average mode safety considerations the power module must be installed in compliance with the spacing and separation requirements of the end - users safet y agency standard, i.e., ul60950, can/csa - c22.2 no. 60950 - 00 and en60950: 2000 and iec60950 - 1999, 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 in put 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 additional 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 and less than or equal to 75 vdc, for the modules output to meet selv requirements, all of the f ollowing must be met: c 3 s 36 se series c 1 c 2 fl 75 l 07 a l o a d vin
ds_s36se3r305_10082013 7 ? 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. ? if the metal baseplate is grounded , o ne vi pin and one vo pin shall also be grounded. ? 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 testi ng. 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 important for un - encapsulated and/or open frame type power modules . for assistance on appropriate soldering and cleaning procedures, please contact deltas technical
ds_s36se3r305_10082013 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 t he output current exceeds the ocp set point, the modules will automatically shut down, and enter hiccup mode or latch mode, which is optional. for hiccup mode, the module will try to restart after shutdown. if the overload condition still exists, the modu le will shut down again. this restart trial will continue until the overload condition is corrected. for latch mode, the module will latch off once it shutdown. the latch is reset by either cycling the input power or by toggling the on/off signal for one second. over - voltage protection the modules include an internal output over - voltage protection circuit, which monitors the voltage on the output terminals. if this voltage exceeds the over - voltage set point, the module will shut down, and enter in hiccup mode or latch mode, which is optional. for hiccup mode, the module will try to restart after shutdown. if the overload condition still exists, the module will shut down again. this restart trial will continue until the over - voltage condition is corrected . for latch mode, the module will latch off once it shutdown. the latch is reset by either cycling the input power or by toggling the on/off signal for one second. over - temperature protection the over - temperature protection consists of circuitry that pr ovides protection from thermal damage. if the temperature exceeds the over - temperature threshold the module will shut down, and enter in hiccup mode or latch mode, which is optional. for auto - restart mode, the module will monitor temperature after shut d own. once the temperature is within the specification, the module will be auto - restarted. for latch mode, the module will latch off once it shutdown. the latch is reset by either cycling the input power or by toggling the on/off signal for one second. 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 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. t he 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 floating . f igure 16 : remote on/off implementation vi(+) vi( - ) on/off vo(+) trim vo( - ) r load vi(+) vi( - ) on/off vo(+) trim vo( - ) r load
ds_s36se3r305_10082013 9 features description s (con.) output voltage adjustment to increase or decrease the output voltage set point, the modules may be connected with an external resistor between the trim pin and either the vo (+) or vo ( - ). the trim pin should be left open i f this feature is not used. figure 17 : circuit configuration for trim - down (decrease output voltage) if the external resistor is connected between the trim and vo(+) pins, the output voltage set point decreases (fig. 1 7). the external resistor value required to obtain an output voltage change from 3.3v to the desired vo_adj is defined as: ex. when trim - down - 1 0% vo_adj= 3.3 v(1 - 10%)= 2.97 v ohm figure 18 : circuit configuration for trim - up (increase o utput voltage) if the external resistor is connected between the trim and vo( - ) the output voltage set point increases (fig. 18 ). the external resistor value require d to obtain an output voltage change from 3.3v to the desired vo_adj is defined as: ex. when trim - up +10% vo_adj=3.3 v(1+10%)= 3.63 v ohm when using trim function, 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 of the module remains at or below the maximum rated power. r load vo (+) trim vo ( - ) r trim - down vi (+) vi ( - ) on/off r load vo (+) trim vo ( - ) r trim - down vi (+) vi ( - ) on/off vo (+) trim vo ( - ) r trim - down vi (+) vi ( - ) on/off rtrim_down vo_adj 2.5 ? ( ) 5110 ? 3.3 vo_adj ? 2050 ? rtrim_down 2.97 2.5 ? ( ) 5110 ? 3.3 2.97 ? 2050 ? rtri m_down 5.228 10 3 ? ? vo (+) trim vo ( - ) r load r trim - up vi (+) vi ( - ) on/off vo (+) trim vo ( - ) r load r trim - up vi (+) vi ( - ) on/off rtrim_up 2.5 5110 ? vo_adj 3.3 ? 2050 ? rtrim_up 2.5 5110 ? 3.63 3.3 ? 2050 ? rtrim_up 3.666 10 4 ? ?
ds_s36se3r305_10082013 10 thermal derating heat can be removed by increasing airflow over the module. to enhance system reliability, the power module should alway s 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 20 : temperature measurement location the allowed maximum hot spot temperatur e is defined at 123 . figure 21: output c urrent vs. a mbient t emperature and air velocity@ v in = 24 v (either orientation ) figure 21: output c urrent vs. a mbient t emperature and air velocity@ v in =48 v (either orientation ) 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 temperature range of the module. convection cooling is usually the dominant mode of heat transfer. hence, the choice of equipment to characterize the thermal perf ormance 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 com monly uses vertically mounted circuit cards in cabinet racks in which the power modules are mounted. 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 19: wind tunnel test setup s36se3r305(standard) output current vs. ambient temperature and air velocity @vin = 24v (either orientation) 0 1 2 3 4 5 60 65 70 75 80 85 ambient temperature ( ) output current(a) natural convection s36se3r305(standard) output current vs. ambient temperature and air velocity @vin = 48v (either orientation) 0 1 2 3 4 5 60 65 70 75 80 85 ambient temperature ( ) output current(a) natural convection 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
ds_s36se3r305_10082013 11 pick and place locat ion surface - mount tape & reel recommended pad layo ut (smd)
ds_s36se3r305_10082013 12 lea ded (sn/ pb ) process recommend temp. profile note: the temperature refers to the pin of s3 6se, measured on the pin +vout joint. lead free (sac) proc ess recommend temp. profile note: the temperature refers to the pin of s36se, 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_s36se3r305_10082013 13 mechanical drawing s urface - mount module t hrough - hole module pin no. name function 1 2 3 4 5 6 +vin - vin on/off (optional) - vout trim (optional) +vout positive input voltage negative input voltage remote on/off (optional) negative output voltage output voltage trim (optional) positive output voltage
ds_s36se3r305_10082013 14 part numbering syste m s 36 s e 3r3 0 5 n r f b product type input voltage number of outputs product series output voltage output curr ent on/off logic pin length/type option code s - small power 18v~75v s - single 1x1, 17w 3r3 - 3.3 v 0 5 - 5 a n - negative (default) p - positive e - no remote o n/off control pin r - 0.170 (default) n - 0.145 k - 0.110 m - smd f - rohs 6/6 (lead free ) a - no trim pin b - with trim pin (default) model list model name input output eff @ 100% load s 36 se3r305nr fb 18v~75v 1.3a 3.3v 5 a 8 6.5 % s 36 se050 03 nrfb 18 v~75v 1.1 a 5.0v 3a 8 3 .5 % S36SE12001NRFB 18 v~75v 1.1 a 12v 1.3a 8 7 .0 % note: 1. default remote on/of f logic is negative; 2. default p in length is 0.170; 3. default otp and output ovp, ocp mode is auto - restart 4. for different options, please refer to part numbering system above or contact your local sales office . 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 ext 6220 ~6224 fax: +886 3 45 27314 email: dcdc@delta.com.tw warranty delta offers a two ( 2) year limited wa rranty. 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 infrin gements 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 n otice .

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