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IMX15, imy15, ims15 series data sheet 15 watt dc-dc converters bcd20008-g rev ae, 25-aug-2017 page 1 of 19 melcher the power partners. features ? rohs lead-free-solder and lead-solder-exempted products are available. wide input voltage ranges up to 150 vdc 1 or 2 isolated outputs up to 48 v 1500 to 3000 vac i/o voltage withstand test emissions en 55022 level a immunity to iec/en 61000-4-2,-3,-4,-5, and -6 fire&smoke as per en 45545 high efficiency (typ. 86%) input undervoltage lockout shutdown input, adjustable output voltages flex power: flexible load distribution on outputs outputs no-load, overload, and short-circuit proof operating ambient temperature ?40 to 85 c thermal protection 2" x 1.6" case with 10.5 mm profile supplementary insulation: 20/40IMX15 models, double or reinforced insulation: 110imy15 models description the IMX15, ims15, and imy15 series of board mountable 15 watt dc-dc converters have been designed according to the latest industry requirements and standards. the converters are particularly suitable for use in mobile or stationary applications in transport, railways, industry, or telecommu- nication, where variable input voltages or high transient voltages are prevalent. covering a total input voltage range from 8.4 up to 150 v with different models, the converters are available with single and electrically-isolated double outputs from 3.3 up to 48 v, externally adjustable, with flexible load distribution on double- output models. a shutdown input allows for remote on/off. features include efficient input and output filtering and consistently high efficiency over the entire input voltage range, high reliability, and excellent dynamic response to load and line changes. the converters have been approved by csa. 20ims/20IMX15 and 40ims/40IMX15 models provide supplementary insulation. connected to a secondary circuit, these models provide selv outputs, even if the bus voltage at the converter input exceeds the selv-limit of 60 vdc. the 110imy15 models provide double insulation and are ce marked. they may be connected to a rectified 110 vac source without any further isolation barrier. the circuitry is comprised of integrated planar magnetics. all components are automatically assembled and solidly soldered onto a single pcb without any wire connection. magnetic feedback ensures maximum reliability and repeatability in the control loop over all operating conditions. careful con- sideration of possible thermal stress ensures the absence of hot spots providing long life in environments, where temperature cycles are frequent. the thermal design allows operation at full load up to an ambient temperature of 71 c in free air without using any potting material. for extremely high vibration environments the case has holes for screw mounting. 51 2.0" 40.6 1.6" 10.5 0.42" safety-approved to iec 60950-1 and ul/csa 60950 -1 2 nd edition table of contents page page copyright ? 2017, bel power solutions inc. all rights reserved. description ............................................................................. 1 model selection ..................................................................... 2 functional description ........................................................... 4 electrical input data ............................................................... 5 electrical output data ............................................................ 8 auxiliary functions ............................................................... 13 electromagnetic compatibility (emc) .................................. 14 immunity to environmental conditions ................................ 16 mechanical data .................................................................. 17 safety and installation instructions ...................................... 18 description of options ......................................................... 19 accessories .......................................................................... 19 1 110imy15 models 1
IMX15, imy15, ims15 series data sheet 15 watt dc-dc converters bcd20008-g rev ae, 25-aug-2017 page 2 of 19 melcher the power partners. model selection table 1: model selection output 1 output 2 output input voltage efficiency model options 2 v o nom i o nom 1 v o nom i o nom 1 power v i min to v i max min 6 typ 6 [vdc] [a] [vdc] [a] p o nom [w] [vdc] [%] [%] 3.3 4.5 - - 14.9 8.4 to 36 5 80 82 20IMX15-03-8rg-g sr i, z, non-g 3.3 4.0 - - 13.2 16.8 to 75 3 78 80 40IMX15-03-8rg non-g 3.3 4.5 - - 14.9 16.8 to 75 3 81 83 40IMX15-03-8rg-g sr i, z, non-g 3.3 4.5 - - 14.9 50 to 150 4 77 79 110imy15-03-8rg-g sr i, z, non-g 5.1 3.5 - - 17.5 8.4 to 36 5 83 86 20IMX15-05-8rg-g sr i, z, non-g 5.1 3.5 - - 17.5 16.8 to 75 3 85 87 40IMX15-05-8rg-g sr i, z, non-g 5.1 3.5 - - 17.5 50 to 150 4 79.5 82 110imy15-05-8rg-g sr i, z, non-g 5.1 2.3 - - 11.7 8.4 to 36 5 82 84 20IMX15-05-8rg z, non-g 5.1 2.7 - - 13.8 14 to 36 81.5 84 24ims15-05-9r -- 5.1 2.5 - - 12.8 16.8 to 75 3 81.5 83 40IMX15-05-8rg -- 5.1 2.5 - - 12.8 50 to 150 4 78 81 110imy15-05-8rg z, non-g 5.1 1.35 3.3 1.35 11.3 8.4 to 36 5 82 84 20IMX15-0503-8rg i, z, non-g 5.1 1.6 3.3 1.6 13.5 14 to 36 81 83 24ims15-0503-9r -- 5.1 1.5 3.3 1.5 12.6 16.8 to 75 3 82 84 40IMX15-0503-8rg i, z, non-g 5.1 1.6 3.3 1.6 13.5 36 to 75 79 82 48ims15-0503-9r -- 5.1 1.5 3.3 1.5 12.6 50 to 150 4 79 82 110imy15-0503-8rg i, z, non-g 5 1.3 5 1.3 13.0 8.4 to 36 5 82 85 20IMX15-05-05-8g i, z, non-g 5 1.4 5 1.4 14.0 14 to 36 81 84 24ims15-05-05-9 -- 5 1.4 5 1.4 14.0 16.8 to 75 3 81 84 40IMX15-05-05-8g i, z, non-g 5 1.4 5 1.4 14.0 50 to 150 4 80 82 110imy15-05-05-8g i, z, non-g 12 0.65 12 0.65 15.6 8.4 to 36 5 83 86 20IMX15-12-12-8g i, z, non-g 12 0.7 12 0.7 16.8 14 to 36 83 86 24ims15-12-12-9 -- 12 0.7 12 0.7 16.8 16.8 to 75 3 84 87 40IMX15-12-12-8g i, z, non-g 12 0.7 12 0.7 16.8 50 to 150 4 82 85 110imy15-12-12-8g i, z, non-g 15 0.5 15 0.5 15.0 8.4 to 36 5 85 88 20IMX15-15-15-8g i, z, non-g 15 0.56 15 0.56 16.8 14 to 36 83 86 24ims15-15-15-9 -- 15 0.56 15 0.56 16.8 16.8 to 75 3 83 86 40IMX15-15-15-8g i, z, non-g 15 0.56 15 0.56 16.8 50 to 150 4 82 85 110imy15-15-15-8g i, z, non-g 24 0.32 24 0.32 15.4 8.4 to 36 5 83 86 20IMX15-24-24-8g i, z, non-g 24 0.35 24 0.35 16.8 14 to 36 84 87 24ims15-24-24-9g non-g 24 0.35 24 0.35 16.8 16.8 to 75 3 84 86 40IMX15-24-24-8g i, z, non-g 24 0.35 24 0.35 16.8 50 to 150 4 82 85 110imy15-24-24-8g i, z, non-g 1 flexible load distribution on dual and double outputs possible; up to 75% of the total output power p o nom on one of the 2 outputs. imx/imy15-0503 models have reduced load distribution flexibility; 1.8 a max. on one of the 2 outputs. the total output power s hould not exceed p o nom . 2 see description of options. 3 short-time operation down to v i = 14.4 v possible ( p o reduced to approx. 85% of p o nom ) 4 short-time operation down to v i = 43.2 v possible ( p o reduced to approx. 85% of p o nom ) and up to 154 v 5 initial start-up at 9 v, main output voltage regulation down to 8.4 v 6 efficiency at t a = 25 c, v i nom, i o nom . sr models with synchronos rectifier. for the rohs version of such models, add -g ! preferred for new designs. nfnd not for new designs. replace 24ims15 models by 20IMX15 and 48ims15 by 40IMX15; replace 20IMX15-05, 40IMX15-05, 110imy15-05 by models with synchronos rectifier sr ; for new designs, chose always the rohs version !
IMX15, imy15, ims15 series data sheet 15 watt dc-dc converters bcd20008-g rev ae, 25-aug-2017 page 3 of 19 melcher the power partners. rohs-compliant models the type designation of rohs-compliant models (compliant for the restriction of all six substances) for the imx/imy15 series en ds with "g". however, in single-output models with 3.3 v or 5.1 v output an extra hyphen (-) is added after the existing "g", which already signifies a synchronous rectifier sr . this is an exception to our normal nomenclature to identify this type of product, since g is already used to designate products for higher output current fitted with a synchronous rectifier. some examples ? 20IMX15-05-8r-g designates a standard version with rohs compliance for all six substances. ? 20IMX15-05-8rg designates a synchronous rectifier sr version which is not rohs-compliant. ? 20IMX15-05-8rg-g designates a synchronous rectifier sr version and rohs compliant for all six substances. ? 20IMX15-05-05-8g designates a double-output model with rohs compliance for all six substances ? 110imy15-24-24-8rg designates a double-output model with rohs compliance for all six substances. part number description 40 IMX15 - 05 - 8 r g z -g xxix input voltage range v i 8.4 to 36 v ...................................................... 20 14 to 36 v ....................................................... 24 16.8 to 75 v .................................................... 40 36 to 75 v ....................................................... 48 50 to 150 v ................................................... 110 series IMX15, ims15, imy15 output voltage of output 1 ............................ 03, 05, 12, 15, 24 hyphen designating double-output models with two electrically isolated outputs ............................... - 1 output voltage of output 2 ............................ 03, 05, 12, 15, 24 operating ambient temperature range t a ?40 6 to 85 c .................................................. -8 6 ?40 to 71 c ..................................................... -9 2 options and features: r input and magnetic feedback ....................... r 3 synchronous rectification ................................ g inhibit ................................................................. i 4 open frame ...................................................... z rohs-compliant for all 6 substances ........ g or -g 5 1 not applicable to -0503 models. they have a common ground. 2 ims15 models are not recommended for new designs. 3 standard for single-output and -0503 models 4 option i replaces the standard shutdown function; see description of options . 5 rohs models with synchronous rectifier end as an exception with -g. 6 only ?25 c for older -8rg sr models (rev. < ba); see table 7a. note: the sequence of options must follow the order above ! examples: 20 im x15-05-05-8g: dc-dc converter, input 9 to 36 v, 2 galvanically isolated outputs each providing 5 v, 1.3 a, rohs-compliant 110 imy15-0503-8rg: dc-dc converter, input 50 to 150 v, 2 outputs with common return providing +5.1 v, 1.5 a and +3.3 v, 1.5 a, rohs-compliant. converter fitted with magnetic feedback for tight output voltage regulation. product marking the converters without option z are marked with basic type designation, input and output voltages and currents, applicable safe ty approval and recognition marks, patent nos., company logo, date code, and serial number.
IMX15, imy15, ims15 series data sheet 15 watt dc-dc converters bcd20008-g rev ae, 25-aug-2017 page 4 of 19 melcher the power partners. functional description the IMX15/ims15/imy15 series of dc-dc converters are magnetic feedback-controlled flyback converters using current mode pwm (pulse width modulation). the -05- and -0503- output voltage models exhibit an active magnetic feedback loop via a pulse transformer, resulting in very tight regulation of the output voltage (see the block diagrams). the output voltages of these models can be adjusted via the r-input. the r-input is referenced to the secondary side and allows for programming the output voltages in the range of approximately 80 to 105% of v o nom , using either an external resistor or an external voltage source. several single-output models with 3.3 or 5.1 v output exhibit a synchronous rectifier to improve the efficiency. the voltage regulation on the double-output models is achieved with an auxiliary winding of the main transformer. the output voltages can be adjusted via the trim input, which is referenced to the primary side and allows for programming the output voltage in the range of 100 to 105% of v o nom via an external resistor, or within 75 to 105% if using an external voltage source. the load regulation output characteristic allows for paralleling of one or more double-output models with equal output voltage. current limitation is provided by the primary circuit, thus limiting the total output power of double-output models. the shutdown input allows remote converter on/off. overtemperature protection will disable the converter under excessive overload conditions with automatic restart. fig. 1 block diagram of single-output models fig. 2 block diagram of -0503-models fig. 3 block diagram of double-output models pwm 2 x 2200 pf 1 2 3 4 13 15 12 11 vi+ sd vi ? vo1+ go n.c. vo2+ go 03089a 17 r pwm 2 x 2200 pf 1 2 3 4 11 12 15 13 vi+ sd vi ? vo1+ vo1? trim vo2+ vo2? 03090a 17 n.c. pwm 2 x 2200 pf 1500 v 1 2 13 15 vi+ vi? vo+ vo? 03039a 17 r 4 sd 3 n.c.
IMX15, imy15, ims15 series data sheet 15 watt dc-dc converters bcd20008-g rev ae, 25-aug-2017 page 5 of 19 melcher the power partners. table 2a: input data of IMX15 and imy15 models input 20imx 40imx 110imy unit characteristics conditions min typ max min typ max min typ max v i input voltage range 1 t a min ? t a max 9 5, 7 36 16.8 5, 6 75 50 5 150 8 v v i nom nominal input voltage i o = 0 ? i o nom 20 40 110 v i sur repetitive surge voltage abs. max input (3 s) 40 100 168 t startup converter switch on worst case condition at 0.25 0.5 0.25 0.5 0.5 0.8 s start-up time 2 sd high v i min , i o = i o nom 0.1 0.1 0.1 t rise rise time 2 v i nom , resistive load 5 5 5 ms i o nom , capac. load 10 20 10 20 10 20 i i o no-load input current i o = 0, v i min ? v i max 65 45 15 ma i irr reflected ripple current i o = 0 ? i o nom 30 30 20 ma pp i inr p inrush peak current 3 v i = v i nom 8910a c i input capacitance for surge calculation 1.5 0.75 0.35 f v s ? d ? shut-down voltage converter disabled ?10 to 0.7 ?10 to 0.7 ?10 to 0.7 v converter operating open or 2 ? 20 open or 2 ? 20 open or 2 ? 20 r s ? d ? shut-down input resistance approx. 10 approx. 10 approx. 10 k ? i s ? d ? input current, when v i min ? v i max 10 3 1 ma disabled sd connected to vi? f s switching frequency v i min ? v i max , approx. 300 approx. 300 approx. 300 khz i o = 0 ? i o nom v i rfi input rfi level conducted en 55032 4 aa a 1 if v o is set above v o nom by use of the r or trim input, v i min will be proportionately increased. 2 measured with resistive and max. admissible capacitive load. valid for models with rev. ai or greater. 3 source impedance according to ets 300132-2, version 4.3. 4 measured with a ceramic capacitor c i directly across input; output lead length 0.1 m, leads twisted. double-output models with both outputs in parallel. c i is specified in table 11. 5 input undervoltage lockout at typ. 80% of v i min . 6 short time operation down to v i min >14.4 v possible. p o reduced to approx. 85% of p o nom . 7 initial start-up at v i = 9 v, main output voltage regulation down to 8.4 v 8 short time operation up to 154 v possible for 2 s. electrical input data general conditions: ?t a = 25 c, unless t c is specified. ? shut-down pin left open-circuit. ? trim or r input left open-circuit.
IMX15, imy15, ims15 series data sheet 15 watt dc-dc converters bcd20008-g rev ae, 25-aug-2017 page 6 of 19 melcher the power partners. table 2b: input data of ims15 models; general conditions as in table 2a input 24ims 48ims unit characteristics conditions min typ max min typ max v i input voltage range 1 t a min ? t a max 14 36 36 75 v v i nom nominal input voltage i o = 0 ? i o nom 24 48 v i sur repetitive surge voltage abs. max input (3 s) 50 100 t startup converter switch on worst case condition at 0.25 0.5 0.25 0.5 s start-up time 2 sd high v i min , i o = i o nom 0.1 0.1 t rise rise time 2 v i nom , resistive load 5 5 ms i o nom , capac. load 10 20 10 20 i i o no-load input current i o = 0, v i min ? v i max 20 40 10 20 ma i irr reflected ripple current i o = 0 ? i o nom 30 30 ma pp i inr p inrush peak current 3 v i = v i nom 5 4.5 a c i input capacitance for surge calculation 4 2 f v s ? d ? shut-down voltage converter disabled ?10 to 0.7 ?10 to 0.7 v converter operating open or 2 ? 20 open or 2 ? 20 r s ? d ? shut-down input resistance approx. 10 approx. 10 k ? i s ? d ? input current, when v i min ? v i max 1.2 3 1.2 3 ma disabled sd connected to vi? f s switching frequency v i min ? v i max , approx. 300 approx. 300 khz i o = 0 ? i o nom v i rfi input rfi level conducted en 55022 4 aa 1 if v o is set above v o nom by use of the r or trim input, v i min will be proportionately increased. 2 measured with resistive and max. admissible capacitive load. 3 source impedance according to ets 300132-2, version 4.3. 4 measured with a ceramic capacitor c i directly across input; output lead length 0.1 m, leads twisted. double-output models with both outputs in parallel. c i is specified in table 11. 5 input undervoltage lockout at typ. 80% of v i min .
IMX15, imy15, ims15 series data sheet 15 watt dc-dc converters bcd20008-g rev ae, 25-aug-2017 page 7 of 19 melcher the power partners. input transient voltage protection a built-in suppressor diode provides effective protection against input transients, which typically occur in many installations. table 5: built-in transient voltage suppressor type breakdown peak power peak pulse voltage at 1 ms current v br nom [v] p p [w] i pp [a] 20IMX15 40 1500 22 24ims15 53 600 7.7 40IMX15 100 1500 9.7 48ims15 100 600 4.1 110imy15 168 600 0.5 fuse and reverse polarity protection the built-in suppressor diode also provides for reverse polarity protection at the input by conducting current in the reverse direction. an external fuse is required to limit this current. table 4: recommended external fuses inrush current the inrush current has been made as low as possible by choosing a very small input capacitance. a series resistor may be installed in the input line to further reduce this current. fig. 4 typical inrush current at v i nom , p o nom versus time (40IMX15). source impedance according to ets 300132-2 at v i nom . fig. 5 converter start-up and rise time for very high energy transients as for example to achieve compliance to iec/en 61000-4-5 (see table electromagnetic immunity ), an external inductor and a capacitor are required, see fig. 6. the components are specified in table 6. fig. 6 example for external circuitry to achieve better transient immunity. values of components in the table below. table 6: components for external circuitry for iec/en 61000-4-5, level 3 compliance. model inductor ( l ) capacitor ( c ) 20IMX15 220 h, 2.7 a 2 x 330 f, 63 v 24ims15 220 h, 1.3 a 2 x 330 f, 63 v 40IMX15 220 h, 1.3 a 2 x 330 f, 100 v 48ims15 220 h, 1 a 2 x 330 f, 100 v 110imy15 220 h, 0.4 a 2 x 330 f, 200 v model fuse type 20IMX15 f 4.0 a 24ims15 f 3.15 a 40IMX15, 48ims15 f 2.0 a 110imy15 f 1.0 a v o nom v o t startup t rise t 04008b input undervoltage lockout a special feature of these converters is the accurate undervoltage lockout protection, which protects against large currents caused by operation at low voltages. this ensures easier start-up in distributed power systems. tab. 3: turn on and turn off voltage model turn on turn off unit min max min max 20IMX15 7.5 8 7 7.5 v 24ims15 12.5 13.5 12 13 40IMX15 12.5 13.5 12 13 48ims15 31.5 32.5 31 32 110imy15 40 42.5 38 40.5 t 04022b 0 20 40 60 80 100 s 4 3 2 1 a vi+ vi? c l + jm234 c + 20IMX15 40IMX15 110imy15
IMX15, imy15, ims15 series data sheet 15 watt dc-dc converters bcd20008-g rev ae, 25-aug-2017 page 8 of 19 melcher the power partners. electrical output data we recommend connecting an external 1 f ceramic capacitor across the output pins. general conditions: ? t a = 25 c, unless t c is specified ? shutdown pin and trim or r pin left open-circuit (not connected) table 7a: output data for single-output models -03-8rg 1 and 05-8rg 1 output 3.3 v 5.1 v unit characteristics conditions min typ max min typ max v o output voltage v i nom 3.25 3.35 5.05 5.15 v i o = 0.5 i o nom i o nom output current 20imx v i min to v i max 4.5 3.5 a 40imx /110imy 4.5 3.5 i o l current limit 2 v i nom , t c = 25 c 6.0 4.6 v o 93% v o nom ? v o line/load regulation v i min to v i max , 0.5 0.5 % (0.1 to 1) i o nom v o output voltage noise v i min to v i max 4 100 100 mv pp i o = i o nom 5 60 60 v o l output overvoltage limit. 3 115 130 115 130 % c o ext admissible capacitive load 0 4000 6 0 4000 6 f v o d dynamic voltage deviat. v i nom 250 250 mv t o d load recovery time i o nom ? 1 / 2 i o nom 11ms regulation iec/en 61204 vo temperature coefficient v i min to v i max 0.02 0.02 %/k ? v o / ? t c (0.1 to 1) i o nom 1 sr models -8rg (synchr. rectifier) have a minimum case and operating temperature of ?25 c. if the revision is ba (or later), it i s ?40 c. 2 the current limit is primary side controlled. in the event of a sustained overload condition the thermal protection may cause t he converter to shut down (restart after cooling down). 3 the overvoltage protection is via a primary side second regulation loop. it is not tracking with r control. 4 bw = 20 mhz 5 measured with a probe according to en 61204 6 c o ext is limited to 3000 f, if v i >125 v or t a < 25 c
IMX15, imy15, ims15 series data sheet 15 watt dc-dc converters bcd20008-g rev ae, 25-aug-2017 page 9 of 19 melcher the power partners. table 7b: output data for -05-8r and -0503-8r models; general conditions as in table 7a output 5.1 v 5.1/3.3 v unit characteristics conditions min typ max min typ max v o , v o1 output voltage v i nom 5.05 5.15 5.0 5.12 v v o2 i o = 0.5 i o nom 3.13 3.46 i o nom output current 1 20imx v i min ? v i max 2.3 2 1.35 1.6 4 a 24ims/48ims 2.7 2 1.6 2.0 4 40imx/110imy 2.5 2 1.5 1.8 4 i ol , i o1l current limit 2 20imx v i nom 3.2 2.7 i o2l v o1 93% v o nom 3.8 i ol , i o1l 24ims/48ims 3.5 3.0 i o2l 3.8 i ol / i o1l 40imx/110imy 3.6 2.9 i o2l 4.0 ? v o line/load regulation 5.1 v v i min ? v i max , 0.5 ? % 5.1 v (0.1 ? 1) i o nom ? +3 / ?5 3.3 v ? 4.5 v o1/2 output voltage noise v i min ? v i max 5 70 80 mv pp i o = i o nom 6 40 40 v o l output overvoltage limit 7 115 130 115 130 % c o ext admissible capacitive load 0 4000 0 4000 3 f v o d dynamic voltage deviat. v i nom 250 150 mv t o d load recovery time i o nom ? 1 / 2 i o nom 11ms regulation iec/en 61204 vo temperature coefficient v i min ? v i max 0.02 0.02 %/k ? v o / ? t c (0.1 ? 1) i o nom 1 flexible load distribution: i o max for one of the 2 outputs; however the total load should not exceed p o nom specified in the table model selection . 2 the current limit is primary-side controlled. 3 for -0503-models: total capacitive load of both outputs. 4 for -0503-models: conditions for specified output. other output loaded with constant current i o = 0.5 i o nom . 5 bw = 20 mhz 6 measured with a probe according to en 61204 7 the overvoltage protection is via a primary side second regulation loop. it is not tracking with r control.
IMX15, imy15, ims15 series data sheet 15 watt dc-dc converters bcd20008-g rev ae, 25-aug-2017 page 10 of 19 melcher the power partners. able 7c: output data for double-output models; general conditions as in table 7a output 2 5 v 2 12 v 2 15 v 2 24 v unit characteristics conditions min typ max min typ max min typ max min typ max v o1 output 1 24ims/48ims v i nom 4.95 5.05 11.88 12.12 14.85 15.15 23.70 24.30 v other models i o = 0.5 i o nom 4.95 5.05 11.90 12.10 14.88 15.12 23.80 24.20 v o2 output 2 24ims/48ims 4.94 5.06 11.84 12.16 14.80 15.20 23.64 24.36 other models 4.94 5.06 11.88 12.12 14.85 15.15 23.75 24.25 i o nom output current 1 20imx v i min ? v i max 2 1.3 2 0.65 2 0.50 2 0.32 a other models 2 1.4 2 0.70 2 0.56 2 0.35 i ol current limit 2, 4 20imx v i nom 3.0 1.6 1.3 0.85 24ims/48ims v o1 93% v o nom 3.5 1.9 1.6 0.95 40imx/110imy 3.2 1.7 1.4 0.90 ? v o1 line/load regulation 8 output 1 v i min ? v i max , i o nom 1 1 1 1 % ? v o2 output 2 v i nom , (0.1 ? 1) i o nom 3 3 3 3 v o1/2 output voltage noise v i min ? v i max 5 80 120 150 240 mv pp i o = i o nom 6 40 60 70 120 v o l output overvoltage limit 7 8 min. load 1% 115 130 115 130 115 130 115 130 % c o ext admissible capacitive load 3 0 4000 0 680 0 470 0 180 f v o d dynamic voltage deviat. v i nom 250 300 300 600 mv t o d load recovery time i o nom ? 1 / 2 i o nom 11 1 1ms regulation vo temperature coefficient v i min ? v i max 0.02 0.02 0.02 0.02 %/k ? v o / ? t c (0.1 ? 1) i o nom 1 flexible load distribution: each output of double-output models is capable of delivering 75% of the total output power; however the total load should not exceed p o nom specified in the table model selection . 2 the current limit is primary-side controlled. 3 measured with both outputs connected in parallel. 4 conditions for specified output. other output loaded with constant current i o = 0.5 i o nom . 5 bw = 20 mhz 6 measured with a probe according to en 61204 7 the overvoltage protection is via a primary side second regulation loop, not tracking with trim or r control. 8 at start-up occurs a short overshoot at the output.
IMX15, imy15, ims15 series data sheet 15 watt dc-dc converters bcd20008-g rev ae, 25-aug-2017 page 11 of 19 melcher the power partners. thermal considerations if a converter, mounted on a pcb, is located in free, quasi- stationary air (convection cooling) at the indicated maximum ambient temperature t a max (see table temperature specifications ) and is operated at its nominal input voltage and output power, the case temperature measured at the measuring point of case temperature t c (see mechanical data ) will approach the indicated value t c max after the warm- up phase. however, the relationship between t a and t c depends heavily on the conditions of operation and integration into a system. the thermal conditions are influenced by input voltage, output current, airflow, temperature of surrounding components and surfaces, and the properties of the printed circuit board. t a max is therefore only an indicative value. caution: the case temperature t c measured at the measuring point of case temperature t c (see mechanical data ) may under no circumstances exceed the specified maximum value. the installer must ensure that under all operating conditions t c remains within the limits stated in the table temperature specifications. overtemperature protection the converters are protected from possible overheating by means of an internal temperature monitoring circuit. it shuts down the converter above the internal temperature limit, and attempts to automatically restart in short intervals. this feature helps protect against excessive internal temperatures, which could occur during heavy overload conditions. output overvoltage protection the output of single-output models as well as -0503- and -05- 05-models are protected against overvoltage by a second control loop. in the event of an overvoltage on one of the outputs, the converter will shut down and attempt to restart in short intervals. doubel-output models (except -0503- and -05-05-models) are protected against overvoltage by a zener diode across the second output. under worst case conditions the zener diode will become a short circuit. since with double-output models both outputs track each other, the protection diode is only provided in one of the outputs. the main purpose of this feature is to protect against possible overvoltage, which could occur due to a failure in the control logic. this protection circuit is not designed to withstand externally applied overvoltages. fig. 9 v o versus i o (typ) of converters with v o = 5.1 v (110imy15-05-8r) 5.5 5.0 4.5 4.0 3.5 3.0 00.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 4 a v 05166a fig. 8 overload switch-off (hiccup mode); typical values 1.0 0.8 0.6 0.4 0 0.2 20 40 60 80 100 c p o / p o max jm017 t a 0.5 m/s = 100 lfm natural cooling short circuit behavior the current limit characteristic shuts down the converter, whenever a short circuit is applied to its output. it acts self- protecting, and automatically recovers after removal of the overload condition (hiccup mode). parallel and series connection the outputs of one or several single- or double-output models fig. 7 maximum output power versus ambient temperature can be connected in series without any precautions, taking into consideration that the highest output voltage should remain below 42 v to ensure that the output remains selv. both outputs of the same converter with equal voltage (e.g. 5 v / 5 v) can be connected in parallel and will share their output currents equally. parallel operation of single or double outputs of two or more converters with the same output voltage may cause start-up problems at initial start-up. this is only advisable in applications, where one converter is able to deliver the full load current as, for example, required in true redundant systems. note: if the 2 nd output of double-output models (except 0503) is not used, connect it in parallel to the 1 st output. typical performance curves general conditions: ? t a = 25 o c, unless t c is specified. ? shutdown pin left open-circuit. ? trim or r input not connected. 70 100 v o [%] t 05041c 0.3 s overload condition switch-off 0
IMX15, imy15, ims15 series data sheet 15 watt dc-dc converters bcd20008-g rev ae, 25-aug-2017 page 12 of 19 melcher the power partners. fig. 10 v o versus i o (typ.) of double-output models (2 x 12 v), with both outputs in parallel (110 imy15-12-12-8) 7 8 9 10 11 12 13 v 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 a i o 0 05020a fig. 12a efficiency versus input voltage and load. typical values (40IMX15-12-12-8). fig. 11 cross load regulation v o1 versus i o1 (typ.) for various i o2 (2 x 12 v) . fig. 13 flexible load distribution on double-outputs models with option r (110imy15-12-12-8r): load variation from 0 to 150% of i o1 nom on output 1; output 2 loaded with 50% of i o2 nom . fig. 12b efficiency versus input voltage and load. typical values (110imy15-12-12-8) 11 11.5 12 12.5 13 13.5 v 0.2 0.3 0.4 0.5 0.6 0.7 a i o1 0.1 05021a i o2 = 0.35 a i o2 = 0.035 a 60 70 80 90 % 0.5 0.75 1 p o / p o nom 0.25 05167a v i min v i nom v i max 60 70 80 90 % 0.5 0.75 0.25 05168a v i min v i nom v i max 1 p o / p o no m fig. 12c efficiency versus input voltage and load. typical values (48ims15-12-12-9) 50 60 70 80 90 % 05040a 0.25 0.5 0.75 1 i o1 / i o1 nom v i nom v i max v i min v i o1 / i o1 nom 05039-x15b 14 13 12 11 10 0 0.25 0.5 0.75 1 1.5 v o2 v o1 1.25
IMX15, imy15, ims15 series data sheet 15 watt dc-dc converters bcd20008-g rev ae, 25-aug-2017 page 13 of 19 melcher the power partners. table 8: v o versus v ext approximate values v o nom typ. values of r ext1 typ. values of r ext2 [v] v o [% of v o nom ] r ext1 [k ? ? ? ? ? ] v o [% of v o nom ] r ext2 [k ? ? ? ? ? ] 3.3 90 0.47 100 95 2.7 105 15 100 110 6.8 5.1 90 3.3 100 95 8.2 105 9.1 100 110 3.9 auxiliary functions shutdown function the outputs of the converters may be enabled or disabled by means of a logic signal (ttl, cmos, etc.) applied to the shut- down pin. if this function is not required, the shut-down pin should be left open-circuit. ? converter operating: 2.0 to 20 v converter disabled: ?10 to +0.7 v adjustable output voltage r input for single-output models and -0503-models trim input for double-output models as a standard feature, the single- and double-output models offer adjustable output voltage(s) by using the control input r or trim. if the control input is left open-circuit, the output voltage is set to v o nom . for output voltages v o > v o nom , the minimum input voltage v i min (see electrical input data ) increases proportionally to v o / v o nom . single-output models with synchronous rectifier (g) : the r input is referenced to the secondary side of the converter. adjustment of the output voltage is possible by means of an external resistor connected between the r pin and either vo+ or vo?. note: for models with synchronous rectifier the logic for v o adjustment differs from other models with r input. double-output models with trim input: the trim input is referenced to the primary side. the figure below shows the topology. adjustment is possible trough either an external resistor or an external voltage source v ext . fig. 16 output voltage control for double-output models (with trim input) by means of the trim input. fig. 15 output voltage control for single-output models, -0503-models, and double-output models by means of the r input. all other models fitted with r-input: the r input is referenced to the secondary side of the converter. adjustment of the output voltage is possible by means of either an external resistor or a voltage source. fig. 14 output voltage control for single-output models with synchronous rectifier. a) adjustment by means of an external resistor r ext . depending upon the value of the required output voltage, the resistor shall be connected: either: between the r pin and vo? to achieve an output voltage adjustment range of v o 80 to 100 % of v o nom . v o r ext1 4 k ? ????????? v o nom ? v o or: between the r pin and vo+ to achieve an output voltage range of v o 100 to 105 % of v o nom . ( v o ? 2.5v) r ext2 4 k ? ?????????????????? 2.5 v ( v o / v o nom ? 1) b) adjustment by means of an external voltage v ext between vo? and r pin. the control voltage range is 1.96 to 2.62 v and allows for adjustment in the range of v o 80 to 105% of v o nom . v o 2.5 v v ext ???????? v o nom attempting to adjust the output below this range will cause the converter to shut down (hiccup mode). note: applying an external control voltage >2.75 v may damage the converter. r vo+ vo? vi+ vi? r ext2 r ext1 06131 trim vo1+ vo2? + v ext ? vi+ vi? r ext vo1? vo2+ 06089a control circuit v ref 2.5 v r vo+ vo? + v ex t ? 4 k ? v ref = 2.5 v control logic r ext1 r ext 2 06029e vi? vi+ +
IMX15, imy15, ims15 series data sheet 15 watt dc-dc converters bcd20008-g rev ae, 25-aug-2017 page 14 of 19 melcher the power partners. table 9b: v o versus v ext for v o = 75 to 105% v o nom ; typical values (v i nom , i o1/2 = 0.5 i o1/2 nom ) v o [% v o nom ] v ext [v] 105 0 102 1.6 95 4.5 85 9 75 13 table 9a: r ext for v o > v o nom ; approximate values (v i nom , i o1, 2 = 0.5 i o1/2 nom ) v o [% v o nom ] r ext [k ? ? ? ? ? ] 105 to 108 (107 typically) 0 105 1.5 104 5.6 103 12 102 27 101 68 100 a) adjustment by means of an external resistor r ext : programming of the output voltage by means of an external resistor r ext is possible within 100 to 105% of v o nom . r ext should be connected between the trim pin and vi?. connection of r ext to vi+ may damage the converter. the table below indicates suitable resistor values for typical output voltages under nominal conditions ( v i nom , i o = 0.5 i o nom ) with either parallel-connected outputs or equal-load conditions on both outputs. b) adjustment by an external voltage source v ext : for programming the output voltage in the range 75 to 105% of v o nom , a source v ext (0 to 20 v) is required, connected between the trim pin and vi?. the table below indicates values v o versus v ext (nominal conditions v i nom , i o = 0.5 i o nom ), with either parallel-connected outputs or equal load conditions on both outputs. applying a control voltage >20 v will set the converter into a hiccup mode. direct paralleling of the trim pins of parallel connected converters is possible. typically occur in many installations, but especially in battery- driven mobile applications. electromagnetic compatibility (emc) a suppressor diode together with an input filter forms an effective protection against high input transient voltages, which table 10: immunity type tests phenomenon standard class coupling value waveform source test in perf. level mode 2 applied imped. procedure oper. crit. 3 electrostatic iec/en 2 contact discharge 4000 v p 1/50 ns 330 ? 10 positive and yes b discharge 61000-4-2 (r pin open) 150 pf 10 negative to case 3 air discharge 8000 v p discharges (r pin open) electromagnetic iec / en x 5 antenna 20 v/m 5 am 80% n.a. 80 to 1000 mhz yes a field 61000-4-3 3 6 3 v/m 6 1 khz env 50204 3 antenna 10 v/m pm, 50% duty n.a. 900 mhz yes a cycle, 200 hz repetition frequ. electrical fast iec / en 3 4 direct +i/?i 2000 v p 4 bursts of 5/50 ns 50 ? 60 s positive yes a transients/burst 61000 -4-4 5 khz rep. rate 60 s negative transients with transients per 15 ms burst coupling mode duration and a 300 ms period surges iec/en 2 +i/?i 1000 v p 1.2/50 s 2 ? 5 pos. and 5 neg. yes b 61000-4-5 3 1 2000 v p 1 18 f surges rf conducted iec/en 3 +i/?i 10 vac am modulated 150 ? 0.15 to 80 mhz yes a immunity 61 000-4-6 2 6 3 vac 6 80%, 1 khz 1 external components required; see fig. 6 and table 6. 2 i = input, o = output. 3 a = normal operation, no deviation from specs., b = temporary deviation from specs. possible. 4 corresponds to the railway standard en 50121-3-2:2006, table 9.3. 5 corresponds to the railway standard en 50121-3-2:2006, table 9.1. 6 valid for 24ims15 and 48ims15 electromagnetic immunity
IMX15, imy15, ims15 series data sheet 15 watt dc-dc converters bcd20008-g rev ae, 25-aug-2017 page 15 of 19 melcher the power partners. 20IMX15-12-12-8 peak pmm 8000 plus name: 20d12_1 date: 24.04.06 time: 16:23 20IMX15d12-con-p en 55022 a dbv 80 60 20 40 0 0.2 0.5 1 2 5 10 20 mhz fig. 19 example for external circuitry to comply with en 55011/ en 55032, class b, conducted. this filter was designed for a 40IMX15-12-12-8. all capacitors are rated to 100 v, the chokes to 1.5 a. conducted emissions fig. 17a typ. disturbance voltage (peak) at pos. input according to en 55011/032, measured at v i nom and i o nom . output leads 0.1 m, twisted, input capacitors see table 11 (20IMX15-12-12-8) fig. 17c typ. disturbance voltage (peak) at pos. input according to en 55011/032, measured at v i nom and i o nom . output leads 0.1 m, twisted, input capacitors see table 11 (110imy15-12-12-8) fig. 17b typ. disturbance voltage (peak) at pos. input according to en 55011/032, measured at v i nom and i o nom . output leads 0.1 m, twisted, input capacitors see table 11 (40IMX15-12-12-8) table 11: external capacitors across the input to comply with en 55011/en 55032, class a, conducted; see fig. 17. model ceramic ml electrolytic capacitor 20IMX15, 24ims15 0.47 f/50 v 220 f/50 v 40IMX15, 48ims15 0.33 f/100 v 220 f/100 v 110imy15 0.15 f/ 200 v 4.7 f/200 v fig. 18 typ. disturbance voltage (peak) at input according to en 55011/022, measured at v i nom and i o nom . output leads 0.1 m, twisted, input filter as in fig. 19 (40IMX15-12-12-8) 40IMX15-12-12-8-peak pmm 8000 plus name: 40d12_4 date: 02.05.06 time: 09:58 en 55022 b dbv 60 20 40 0 40IMX15d12-f 0.2 0.5 1 2 5 10 20 mhz 40IMX15-12-12-8 peak pmm 8000 plus name: 40d12_1 date: 24.04.06 time: 15:2 40IMX15d12-con-p en 55022 a dbv 80 60 20 40 0 0.2 0.5 1 2 5 10 20 mhz dbv 80 60 20 40 0 110imy15-12-12-9 peak pmm 8000 plus name: 110d12_1 date: 25.04.06 time: 08:07 0.2 0.5 1 2 5 10 20 mh z 110imy15-d12-con-p en 55022 a 40IMX15 22 h 22 nf 47 f 330 nf 47 f vi+ vi? jm126
IMX15, imy15, ims15 series data sheet 15 watt dc-dc converters bcd20008-g rev ae, 25-aug-2017 page 16 of 19 melcher the power partners. temperatures table 14: temperature specifications valid for air pressure of 800 to 1200 hpa (800 to 1200 mbar) temperature -9 -8 unit characteristics conditions min max min max t a ambient temperature operational 1 ?40 71 ?40 2, 3 85 c t c case temperature ?40 95 ?40 2, 3 105 t s storage temperature non operational ?55 85 ?55 85 1 see thermal considerations 2 start-up at ?55 c, except models with synchronous rectifier sr 3 ?25 c for all models with synchronous rectifier sr with revision < ba. immunity to environmental conditions table 12: mechanical and climatic stress test method standard test conditions status cab damp heat iec/en 60068-2-78 t emperature: 40 2 c converter steady state mil-std-810d sect. 507.2 relative humidity: 93 +2/-3 % not duration: 56 days operating ea shock iec/en 60068-2-27 acceleration amplitude: 50 g n = 490 m/s 2 converter (half-sinusoidal) mil-std-810d sect. 516.3 bump du ration: 11 ms operating number of bumps: 18 (3 each direction) fc vibration iec/en 60068-2-6 acceleration amplitude: 0.35 mm (10 to 60 hz) converter (sinusoidal) 5 g n = 49 m/s 2 (60 to 2000 hz) operating frequency (1 oct/min): 10 to 2000 hz test duration: 7.5 h (2.5 h each axis) fda random vibration iec/en 60068-2-35 acceleration spectral density: 0.05 g n 2 /hz converter wide band frequency band: 20 to 500 hz operating reproducibility acceleration magnitude: 4.9 g n rms high test duration: 3 h (1 h each axis) -- salt mist test en 50155:2007, t emperature: 35 2 c converter sodium chloride clause 12.2.10 duration: 16 h not (nacl) solution class st2 operating reliability table 13: mtbf model standard ground benign ground fixed ground mobile unit t c = 40 c t c = 40 c t c = 70 c t c = 50 c 20IMX15-12-12-8 mil-hdbk-217f 697 000 366 000 229 000 312 000 h 20IMX15-15-15-8 belcore 2 345 000 1 172 000 632 000 317 000 48ims15-05-05-9 mil-hdbk-217f 535 000 283 000 179 000 245 000 110imy15-05-8r mil-hdbk-217f 485 000 255 000 167 000 223 000 belcore 1 547 000 774 000 394 000 206 000
IMX15, imy15, ims15 series data sheet 15 watt dc-dc converters bcd20008-g rev ae, 25-aug-2017 page 17 of 19 melcher the power partners. mechanical data dimensions in mm (inches). tolerances 0.3 mm, unless otherwise noted. fig. 20 case IMX15, ims15, imy15 material: fortron 1140l6 weight: <35 g fig. 21 open frame (option z) european projection 50.9 (2") 40.8 (1.6") 10.5 0.3 (0.41") 45.72 (1.8") s09011c 1 4 47 (1.85") 36.83 (1.45") fixing hole for m2 or ka 22 self-tapping screws 5.08 (0.2") measuring point of case temperature t c 2 3 bottom view 3 x 5.08 (0.2") 2.54 (0.1") 5 (0.19") 12 11 17 12 13 15 0.8 (0.03") for holes with ? 1.4 mm 12 48.3 (1.9") 8.9 0.3 (0.35") 45.72 (1.8") s90011c 1 4 11 17 38.8 (1.52") 3 x 5.08 (0.2") 6 x 5.08 (0.2") 2 3 12 13 15 bottom view 2.54 (0.1") 5 (0.19") 0.8 (0.03") for holes with ? 1.4 mm
IMX15, imy15, ims15 series data sheet 15 watt dc-dc converters bcd20008-g rev ae, 25-aug-2017 page 18 of 19 melcher the power partners. safety and installation instructions pin allocation the converters have been evaluated for: building in supplementary insulation input to output, based on their maximum input voltage (IMX15, ims15) reinforced insulation input to output, based on their maximum input voltage (imy15 models) pollution degree 2 environment (not option z) connecting the input to a secondary circuit subject to a maximum transient rating of 1500 v (IMX15, ims15) connecting the input to a secondary circuit subject to a maximum transient rating of 2500 v (imy15) the converters are subject to manufacturing surveillance in accordance with the above mentioned ul standards and with iso9001:2008. railway applications to comply with railway standards, all components are coated with a protective lacquer (except option z). protection degree and cleaning liquids the protection degree of the converters is ip 40, except open- frame models (option z). in order to avoid possible damage, any penetration of cleaning fluids should be prevented, since the power supplies are not hermetical sealed. however, open-frame models (option z) leave the factory unlacquered; they may be lacquered by the customer, for instance together with the mother board. cleaning liquids are not permitted ? except washing at room temperature with isopropyl alcohol. if necessary, the mother board must be cleaned, before fitting the open-frame converter. note: cleaning liquids may damage the adhesive joints of the ferrite cores. isolation the electric strength test is performed in the factory as routine test in accordance with en 50514 and iec/en 60950. the company will not honor any warranty claims resulting from incorrectly executed electric strength field tests. fig. 22 footprint 1000 5 1 2 3 4 11 12 13 15 17 bottom view installation instructions installation must strictly follow the national safety regulations in compliance with the enclosure, mounting, creepage, clearance, casualty, markings and segregation requirements of the end-use application. the converter must be connected to a secondary circuit. do not open the converter. ensure that a converter failure (e.g., by an internal short-circuit) does not result in a hazardous condition. input fuse to prevent excessive current flowing through the input supply lines in case of a malfunction an external fuse should be installed in a non-earthed input supply line; see table 4 . standards and approvals the converters are approved according to iec 60950 -1 and ul/ csa 60950-1 2 nd edition. 1 10imy models are fitted with a ce mark. table 15: pin allocation pin standard and option z sing le double -0503- 1 vi+ vi+ vi+ 2 vi? vi? vi? 3 - trim n.c. 4sd sd sd 5- - - 6- - - 11 - vo1+ vo2+ 12 - vo1? go 13 vo+ vo2+ vo1+ 15 vo? vo2? go 17 r n.c. r table 16: electric strength test voltages characteristic input to output output tounit ims15 IMX15 imy15 output factory test 1 s 1.2 1.5 1 3.0 0.1 kvac equivalent dc voltage (1.7) (2.1) (4.2) 0.15 kvdc insulation resistance >100 >100 >100 - m ? at 500 vdc partial discharge consult the company - kv extinction voltage 1 1.5 kvac according to iec 60950, sect. 6.2, telecom equipment; type test with 1.5 kvac / 60 s (iee 802.3). IMX15 units produced before 2013 were tested only with 1.2 kvac. 2 the test voltage between outputs is not applied as routine test.
IMX15, imy15, ims15 series data sheet 15 watt dc-dc converters bcd20008-g rev ae, 25-aug-2017 page 19 of 19 melcher the power partners. description of options table 17: survey of options option function of option characteristic -9 temperature range, nfnd see table temperatures specifications i inhibit rep laces the shutdown function with inverted logic z open frame see mechanical data option -9 versus -8 IMX15 and imy15 models with -9 (not for new designs) have a limited temperature range. standard models with suffix -8 are rated up to t a = 85 c; see table temperature specifications . option i: inhibit replaces the shut-down function with inverted logic. the output(s) of the converter may be enabled or disabled by fig. 23 if the inhibit function is not used, the inhibit pin should be connected to vi?. vi+ vi ? i 06070 nuclear and medical applications - these products are not designed or intended for use as critical components in life support s ystems, equipment used in hazardous environments, or nuclear control systems. technical revisions - the appearance of products, including safety agency certifications pictured on labels, may change dependi ng on the date manufactured. specifications are subject to change without notice. copyright ? 2017, bel power solutions inc. all rights reserved. belfuse.com/power-solutions accessories supports are available for chassis mounting cmbIMX15 (hzz00626) and for din-rail mounting dmbIMX15 (hzz00625). they exhibit the connectors and allow for placing different external components. for details see our mounting supports data sheet bcd20007 on our website. fig. 24 din-rail mounting support dmbIMX15 means of a logic signal (ttl, cmos, etc.) applied to the inhibit pin. no output voltage overshoot will occur, when the converter is turned on. if the inhibit function is not required, the inhibit pin should be connected to vi ? to enable the output (active low logic, fail safe). voltage on pin i: converter operating: ?10 v to 0.8 v converter inhibited: 2.4 v to v i max (<75 v) or pin i left open-circuit. option z open frame and not lacquered. this option can be chosen for mounting onto a mother board, which is subject to be lac- quered. see protection degree and cleaning liquids (page 18). option g or -g products rohs-compliant for all 6 substances. see rohs- compliant models (page 3) for the correct denotation.

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