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ds_q36sr12017_12272012 features ? high efficiency: 93% @ 12v/17a ? size: 58.4x36.8x11.7mm (2.30?x1.45?x0.46?) w/o heat-spreader 58.4x36.8x12.7mm (2.30?x1.45?x0.50?) with heat-spreader ? industry standard footprint and pin out ? fixed frequency operation ? input uvlo ? otp and ovp ? output ocp hiccup mode ? output voltage trim down : -10% ? output voltage trim up: +10% at vin>20v ? monotonic startup into normal and pre-biased loads ? 1500v isolation and basic insulation ? no minimum load required ? no negative current during power or enable on/off ? iso 9001, tl 9000, iso 14001, qs 9000, ohsas18001 certified manufacturing facility ? ul/cul 60950-1 (us & canada) applications ? optical transport ? data networking ? communications ? servers options ? negative or positive logic remote on/off ? through hole with heat-spreader delphi series q36sr, quarter brick 204w dc/dc power modules: 18v~75vin,12v, 17aout the delphi series q36sr, quarter brick, 18v~75vin input, single output, isolated dc/dc converters, are the latest offering from a world leader in power systems technology and manufacturing D delta electronics, inc. with creative design technology and optimization of component placement, these converters possess outstanding electrical and thermal performance, as well as extremely high reliability under highly stressful operating conditions. typical efficiency of the 12v/17a module is greater than 93%.
q36sr12017_12272012 2 technical specifications (t a =25c, airflow rate=300 lfm, v in =48vdc, nominal vout unless otherwise noted.) note1: for applications with higher output capacitive load, please contact delta note2: trim down range -10% for 18vin ~75vin, trim up range +10% for 20vin ~ 75vin. parameter notes and conditions q36sr12017(standard) min. typ. max. units absolute maximum ratings input voltage vdc continuous 0 80 vdc transient (100ms) 100ms 100 vdc operating ambient temperature -40 85 c storage temperature -55 125 c input/output isolation voltage 1500 vdc input characteristics operating input voltage 18 48 75 vdc input under-voltage lockout turn-on voltage threshold 16 17 18 vdc turn-off voltage threshold 15 16 17 vdc lockout hysteresis voltage 0.3 1 1.8 vdc maximum input current 100% load, 18vin 15 a no-load input current vin=48v,io=0a 100 ma off converter input current vin=48v 10 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 50 db output characteristics output voltage set point vin=48v, io=io.max, tc=25c 11.82 12.00 12.18 vdc output voltage regulation over load io=io, min to io, max 3 15 mv over line vin=18v to 75v 3 15 mv over temperature tc=-40c to 110c 120 mv total output voltage range over sample load, line and temperature 11.64 12.00 12.36 v output voltage ripple and noise 5hz to 20mhz bandwidth peak-to-peak full load, 1f ceramic, 10f tantalum 100 mv rms full load, 1f ceramic, 10f tantalum mv operating output current range vin=18v to75v 0 17 a operating output current range output over current protection(hiccup model) output voltage 10% low 110 140 % dynamic characteristics output voltage current transient vin=48v, 10f tan & 1f ceramic load cap, 0.1 a / s positive step change in output current 75% io.max to 50% io.max 400 mv negative step change in output current 50% io.max to 75% io.max 400 mv settling time (within 1% vout nominal) 200 s turn-on transient start-up time, from on/off control 28 ms start-up time, from input 28 ms output capacitance (note1) full load; 5% overshoot of vout at startup 0 5000 f efficiency 100% load vin=24v 93.5 % 100% load vin=48v 93.0 % 60% load vin=48v 92.0 % isolation characteristics input to output 1500 vdc isolation resistance 10 m ? isolation capacitance 1000 pf feature characteristics switching frequency 260 khz on/off control, negative remote on/off logic logic low (module on) von/off 0.8 v logic high (module off) von/off 2.4 5 v on/off control, positive remote on/off logic logic low (module off) von/off 0.8 v logic high (module on) von/off 2.4 5 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=5v output voltage trim range(note 2) pout ?? max rated power,io ?? io.max -10 10 % output voltage remote sense range pout ?? max rated power,io ?? io.max 10 % output over-voltage protection over full temp range; % of nominal vout 115 140 % general specifications mtbf io=80% of io, max; ta=25c, normal input,600flm 3.0 m hours weight without heat spreader 45.5 grams weight with heat spreader 61.1 grams over-temperature shutdown ( without heat spreader) refer to figure 19 for hot spot 1 location 135 c over-temperature shutdown (with heat spreader) refer to figure 22 for hot spot 2 location 120 c over-temperature shutdown ( ntc resistor ) refer to figure 19 for ntc resistor location 130 c note: please attach thermocouple on ntc resistor to test otp function, the hot spots? temperature is just for reference.
q36sr12017_12272012 3 electrical characteristics 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 maximum input voltage at 25c. 0.5 5.5 10 .5 15 .5 15 20 25 30 35 40 45 50 55 60 65 70 75 input voltage(v) input current(a) figure 3: typical full load input characteristics at room temperature
q36sr12017_12272012 4 electrical characteristics curves for negative remote on/off logic figure 4: turn-on transient at full rated load current (resistive load) (10 ms/div). vin=48v. top trace: vout, 3.0v/div; bottom trace: on/off input, 3v/div figure 5: turn-on transient at zero load current (10 ms/div). vin=48v. top trace: vout: 3.0v/div, bottom trace: on/off input, 3v/div figure 6: output voltage response to step-change in load current (50%-75%-50% of io, max; di/dt = 0.1a/s; vin is 24v). load cap: 10f tantalum capacitor and 1f ceramic c apacitor. top trace: vout (0.5v/div, 500us/div), bottom trace:iout (5a/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 7: output voltage response to step-change in load current (50%-75%-50% of io, max; di/dt = 0.1a/s; vin is 48v). load cap: 10f tantalum capacitor and 1f ceramic capacitor. top trace: vout (0.5v/div, 500us/div), bottom trace: iout (5a/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 0 0 0 0 0 0
q36sr12017_12272012 5 electrical characteristics curves figure 8: 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 battery impedance. measure current as shown above figure 9: input terminal ripple current, i c , at full rated output current and nominal input voltage (vin=48v) with 12h source impedance and 33f electrolytic capacitor (1a/div, 5us/div) figure 10: input reflected ripple current, i s , through a 12h source inductor at nominal input voltage (vin=48v) and rated load current (2 0 ma/div, 5us/ div) figure 11: output voltage noise and ripple measurement test setup figure 12: output voltage ripple at nominal input voltage (vin=48v) and rated load current (50 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 13: output voltage vs. load current showing typical current limit curves and converter shutdown points (vin=48v) strip copper vo(-) vo(+) 10u 1u scope resistiv e load 0 0 0
q36sr12017_12272012 6 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 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 module?s output to meet selv requirements, all of the following must be met: ? 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 voltage does not appear at the module?s 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 fast-acting fuse with 50a 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 important for un-encapsulated and/or open frame type power modules. for assistance on appropriate soldering and cleaning procedures, please contact delta?s technical support team. design considerations 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 100 f electrolytic capacitor (esr < 0.7 ? at 100 khz) mounted close to the input of the module to improve the stability. layout and emc considerations delta?s dc/dc power modules are designed to operate in a wide variety of systems and applications. for design assistance with emc compliance and related pwb layout issues, please contact delta?s technical support team. an external input filter module is available for easier emc compliance design. below is the reference design for an input filter tested with q36sr12017 to meet class a in cisspr 22. schematic test result: 25c, 48vin, full load, green line is quasi peak mode and blue line is average mode. safety considerations the power module must be installed in compliance with the spacing and separation requirements of the end-user?s safety agency standard, i.e., ul60950-1,
q36sr12017_12272012 7 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 vi(-) terminal. the switch can be an open collector or open drain. for negative logic if the remote on/off feature is not used, please short the on/off pin to vi(-). for positive logic if the remote on/off feature is not used, please leave the on/off pin floating. figure 14: 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 output voltage sense range given here: [vo(+) ? vo(?)] ? [sense(+) ? sense(?)] 10% ?? vout this limit includes any increase in voltage due to remote sense compensation and output voltage set point adjustment (trim). figure 15: effective circuit configuration for remote sense operation
q36sr12017_12272012 8 features descriptions (con.) if the remote sense feature is not used to regulate the output at the point of load, please connect sense(+) to vo(+) and sense(?) to vo(?) at the module. 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 power does not exceed the maximum rated power. output voltage adjustment (trim) to increase or decrease the output voltage set point, connect an external resistor between the trim pin and the sense(+) or sense(-). the trim pin should be left open if this feature is not used. figure 16: 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. the external resistor value required to obtain a percentage of output voltage change ? % is defined as: () ? ? ? ? ? ? ? ? ? = ? k down rtrim 2 . 10 511 ex. when trim-down -10% (12v0.9=10.8v) () () ? = ? ? ? ? ? ? ? ? = ? k k down rtrim 9 . 40 2 . 10 10 511 figure 17: 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. the external resistor value required to obtain a percentage output voltage change ? % is defined as: () ? ? ? ? ? ? + = ? k up rtrim 2 . 10 511 1.225 ) (100 vo 11 . 5 ex. when trim-up +10% (12v1.1=13.2v) () ? = ? ? + = ? k up rtrim 3 . 489 2 . 10 10 511 10 225 . 1 ) 10 100 ( 12 11 . 5 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 power of the module remains at or below the maximum rated power.
q36sr12017_12272012 9 thermal considerations 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 performance of the power module is a wind tunnel. thermal testing setup delta?s 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 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??). air flow modu le pw b 50.8(2.00") air velocity a nd am bi e nt temperature sured below the module fan cing pw b note: wind tunnel test setup figure dimensions are in millimeters and (inches) figure 18: 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.
q36sr12017_12272012 10 * thermal curves (with heat spreader) hot spot 2 airflow figure 22: temperature measurement location.* the allowed maximum hot spot 2 temperature is defined at 110 j q36sr12017(standard) output current vs. ambient temperature and air velocity @vin = 24v (transverse orientation,with heatspreader) 0 3 6 9 12 15 18 25 30 35 40 45 50 55 60 65 70 75 80 85 ambient temperature ( j ) output current (a) natural convection 600lfm 500lfm 400lfm 300lfm 200lfm 100lfm figure 23: output current vs. ambient temperature and air velocity @vin=24v(transverse orientation, airflow direction from vin+ to vin-,with heat spreader) q36sr12017(standard) output current vs. ambient temperature and air velocity @vin = 48v (transverse orientation,with heatspreader) 0 3 6 9 12 15 18 25 30 35 40 45 50 55 60 65 70 75 80 85 ambient temperature ( j ) output current (a) natural convection 100lfm 200lfm 300lfm 400lfm 500lfm 600lfm figure 24: output current vs. ambient temperature and air velocity @vin=48v(transverse orientation, airflow direction from vin+ to vin-,with heat spreader) thermal curves (without heat spreader) hot spot 1 airflow ntc resistor figure 19: temperature measurement location.* the allowed maximum hot spot1 temperature is defined at 125 j q36sr12017(standard) output current vs. ambient temperature and air velocity @vin = 24v (transverse orientation) 0 3 6 9 12 15 18 25 30 35 40 45 50 55 60 65 70 75 80 85 ambient temperature ( j ) output current (a) natural convection 600lfm 500lfm 400lfm 300lfm 200lfm 100lfm figure 20: output current vs. ambient temperature and air velocity @vin=24v(transverse orientation, airflow direction from vin+ to vin-,without heat spreader) q36sr12017(standard) output current vs. ambient temperature and air velocity @vin = 48v (transverse orientation) 0 3 6 9 12 15 18 25 30 35 40 45 50 55 60 65 70 75 80 85 ambient temperature ( j ) output current (a) natural convection 100lfm 200lfm 300lfm 400lfm 500lfm 600lfm figure 21: output current vs. ambient temperature and air velocity @vin=48v(transverse orientation, airflow direction from vin+ to vin-,without heat spreader)
q36sr12017_12272012 11 mechanical drawing (with heat-spreader) for modules with through-hole pins and the optional heatspreader, they are intended for wave soldering assembly onto system boards; please do not subject such modules through reflow temperature profile.
q36sr12017_12272012 12 mechanical drawing (without heat-spreader) 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 specification: pins 1-3,5-7 1.00mm (0.040?) diameter pins 4 & 8 1.50mm (0.060?) diameter note o all pins are copper alloy with matte tin(pb free) plated over ni under-plating.
q36sr12017_12272012 13 recommended pad layout(through-hole module)
q36sr12017_12272012 14 part numbering system q 36 s r 120 17 n r f a type of product input voltage number of outputs product series output voltage output current on/off logic pin length/type option code q - 1/4 brick 36 - 18v~75v s - single r - regular 120 - 12v 17 - 17a n- negative p- positive r - 0.170? n - 0.146? k - 0.110? space - rohs 5/6 f - rohs 6/6 (lead free) a - standard functions h-with heat spreader model list model name input output eff @ 100% load q36sr12017nrfa 18v~75v 15a 12v 17a 93.0% @ 48vin q36sr12017nnfa 18v~75v 15a 12v 17a 93.0% @ 48vin default remote on/off logic is negative and pin length is 0.170? * for modules with through-hole pins and the optional heatspreader, they are intended for wave soldering assembly onto system boards; please do not subject such modules through reflow temperature profile. contact: 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: phone: +41 31 998 53 11 fax: +41 31 998 53 53 email: dcdc@delta-es.com asia & the rest of world: telephone: +886 3 4526107 ext 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 grante d 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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