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  ? bcd20007 rev aa page 1 of 14 www.power-one.com imx7 dc-dc series data sheet 7-watt dc-dc converters input voltage ranges up to 150 vdc 1 or 2 outputs up to 48 vdc 1500 to 2500 vdc i/o electric strength test ? rohs lead-free solder and lead-solder-exempted products are available ? extremely wide input voltage ranges ? electrical isolation, single and dual outputs ? immunity to iec/en 61000-4-2, -3, -4, -5, -6 ? high efficiency (typ. 84%) ? flex power: flexible load distribution on outputs ? outputs no-load and short-circuit proof ? high reliability and no derating ? operating ambient temperature ?40 to +85 c ? 2? 1? case with 10.5 mm profile description the imx7 series of board-mountable 7 watt dc-dc converters has been designed according to the latest industry require- ments and standards. the converters are particularly suitable for use in mobile or stationary applications in transport, railways, industry, or telecom, where variable input voltages or high transient voltages are prevalent. covering a total input voltage range from 8.4 vdc up to 150 vdc with four different types, the converters are available with single and electrically isolated double outputs from 3.3 up to 48 vdc with flexible load distribution on double outputs. features include efficient input and output filtering with unsurpassed transient and surge protection, low output ripple and noise, consistently high efficiency over the entire input voltage range, and high reliability as well as excellent dynamic response to load and line changes. the converters provide supplementary insulation with selv outputs as for instances required in battery-supported systems, where the bus voltage may exceed the selv limit of 60 v. they are designed and built according to the international safety standards iec/en 60950 and approved by tv, ul, and cul. in addition, 70imx7 and 110imx7 models are ce-marked. the circuit is comprised of integral planar magnetics, and all components are automatically assembled and solidly soldered onto a single pcb without any wire connections. magnetic feedback ensures maximum reliability and repeatability in the control loop over all operating conditions. careful con- siderations of possible thermal stresses ensure the absence of hot spots, providing long life in environments where temperature cycles are a reality. the thermal design allows operation at full load up to an ambient temperature of 85 c in free air without using any potting material. for extremely high vibration environments the case has holes for screw mounting. several options such as open-frame provide a high level of application-specific engineering and design-in flexibility. features table of contents page page 50.8 2.0" 25.4 1.0" 10.5 0.42" description ............................................................................. 1 model selection ..................................................................... 2 functional description ........................................................... 3 electrical input data ............................................................... 4 electrical output data ............................................................ 6 auxiliary functions ................................................................. 8 electromagnetic compatibility (emc) .................................. 10 immunity to environmental conditions ................................ 11 safety and installation instructions ...................................... 12 mechanical data .................................................................. 12 description of options ......................................................... 13 ec declaration of conformity .............................................. 14 1 1 70/110imx7 models
? bcd20007 rev aa page 2 of 14 www.power-one.com imx7 dc-dc series data sheet 7-watt dc-dc converters model selection table 1: model selection output 1 output 2 output power input voltage efficiency model options 2 v o1 nom i o1 nom v o2 nom i o2 nom p o nom range typ [ vdc] [a] 1 [ vdc] [a] 1 [w ] [ vdc] [%] 3.3 1.5 - - 5 8.4 ? 36 79 20imx7-03-8 z, g 3.3 1.5 - - 5 16.8 ? 75 3 81 40imx7-03-8 z, g 3.3 1.5 - - 5 40 ? 121 79 70imx7-03-8 z, g 3.3 1.5 - - 5 60 ? 150 79 110imx7-03-8 z, g 5.1 1.2 - - 6.1 8.4 ? 36 80 20imx7-05-8 z, g 5.1 1.2 - - 6.1 16.8 ? 75 3 81 40imx7-05-8 z, g 5.1 1.2 - - 6.1 40 ? 121 80 70imx7-05-8 z, g 5.1 1.2 - - 6.1 60 ? 150 80 110imx7-05-8 z, g 5 0.6 5 0.6 6 8.4 ? 36 82 20imx7-05-05-8 z, g 5 0.6 5 0.6 7 16.8 ? 75 3 83 40imx7-05-05-8 z, g 5 0.6 5 0.6 7 40 ? 121 82 70imx7-05-05-8 z, g 5 0.6 5 0.6 7 60 ? 150 82 110imx7-05-05-8 z, g 12 0.25 12 0.25 6 8.4 ? 36 84 20imx7-12-12-8 z, g 12 0.25 12 0.25 7.2 16.8 ? 75 3 84 40imx7-12-12-8 z, g 12 0.25 12 0.25 7.2 40 ? 121 83 70imx7-12-12-8 z, g 12 0.25 12 0.25 7.2 60 ? 150 84 110imx7-12-12-8 z, g 15 0.2 15 0.2 6 8.4 ? 36 84 20imx7-15-15-8 z, g 15 0.2 15 0.2 7.2 16.8 ? 75 3 84 40imx7-15-15-8 z, g 15 0.2 15 0.2 7.2 40 ? 121 83 70imx7-15-15-8 z, g 15 0.2 15 0.2 7.2 60 ? 150 84 110imx7-15-15-8 z, g 24 0.13 24 0.13 6.2 8.4 ? 36 84 20imx7-24-24-8 z, g 24 0.13 24 0.13 7.2 16.8 ? 75 3 84 40imx7-24-24-8 z, g 24 0.13 24 0.13 7.2 40 ? 121 83 70imx7-24-24-8 z, g 24 0.13 24 0.13 7.2 60 ? 150 84 110imx7-24-24-8 z, g 1 flexible load distribution on double outputs possible. 2 if only one output voltage is required, connect both outputs of double-output models in parallel. 3 operation at low input voltage possible, if p o is reduced to approx. 80% of p o nom at v i min = 14.1 v. part number description input voltage range v i 8.4 ? 36 vdc ......................................... 20 16.8 ? 75 vdc ....................................... 40 40 ? 121 vdc ........................................ 70 60 ? 150 vdc ...................................... 110 series ......................................................................... imx7 output voltage of output 1 ...................... 03, 05, 12, 15, 24 output voltage of output 2 ............................ 05, 12, 15, 24 operating ambient temperature t a ?40 to 85 c ............................................... -8 options: open frame .................................................. z rohs compliant for all six substances ......... g example: 20imx7-05-05-8zg: dc-dc converter, input voltage range 8.4 ? 36 v, 2 outputs providing each 5 v, 600 ma, temperature range ? 40 to 85 c, open frame, rohs compliant for all six substances. obsolete options (nfnd: not for new designs; contact power-one for availability): t a = ?25 to 71 c ....................................... -9 surface mount version ............................... m c-pinout ...................................................... c 20 imx7 - 05 - 05 -8 z g
? bcd20007 rev aa page 3 of 14 www.power-one.com imx7 dc-dc series data sheet 7-watt dc-dc converters functional description the imx7 series dc-dc converters are feedback-controlled flyback converters using current mode pwm (pulse width modulation). in the case of single-output models, the output is directly sensed and fed back to the primary control circuit via a pulse transformer, resulting in tight regulation of the output voltage. the r input is referenced to the secondary side and allows for programming the output voltages in the range 75 to 105% v o nom , using either an external resistor or an external voltage source. fig. 2 block diagram for dual-output models with standard pinout. fig. 1 block diagram for single-output models with standard pinout. pwm 2 2200 pf 13 1 2 3 4 11 10 12 vi+ i vi? n.c. vo+ vo ? r 03041a pwm 2 2200 pf 14 1 2 3 4 11 10 12 13 vi+ trim (r) i vi ? vo1+ vo1? vo2+ vo2? n.c. 03042a for double-output models, the output voltage is sensed by a separate transformer winding close to the secondary and fed back to the primary control circuit. the close magnetic coupling provided by the planar construction ensures very good regulation and allows for flexible load distribution. the trim input (r) is referenced to the primary side of double-output models, and allows for programming the output voltages in the range 100 to 105% v o nom by means of an external resistor, or within 75 to 100% v o nom , using an external voltage source. current limitation is provided by the primary circuit, thus limiting the total output current ( i o nom for the single- and the sum of i o1 nom and i o2 nom for the double-output models). the inhibit input i allows remote control of the outputs; pin i must be connected to vi? to activate the converter.
? bcd20007 rev aa page 4 of 14 www.power-one.com imx7 dc-dc series data sheet 7-watt dc-dc converters electrical input data general conditions: ?t a = 25c, unless t c is specified. ? connector pin i connected with vi?. ? trim or r input not connected. table 2: input data input 20imx7 40imx7 70imx7 110imx7 characteristics conditions min typ max min typ max min typ max min typ max unit v i input voltage range 1 t c min ? t c max 8.4 36 16.8 6 75 40 121 60 150 vdc v i nom nominal input voltage i o = 0 ? i o nom 20 40 70 110 v i sur repetitive surge voltage abs. max input (3 s) 50 5 100 150 t start up converter 2 switch on worst case condition at 0.25 0.5 0.25 0.5 0.25 0.5 0.25 0.5 s start-up time inh. release v i min and full load 0 .1 0 .1 0 .1 0 .1 t rise rise time 2 v i nom resistive load 5 5 5 5 ms i o nom capacitive load 12 12 12 12 i i o no load input current i o = 0, v i min ? v i max 15 30 8 15 8 15 8 15 ma c i input capacitance (for surge calculation) 4.7 0.5 0.2 0.2 f v inh inhibit voltage converter operating ?10 0.8 ?10 0.8 ?10 0.8 ?10 0.8 v converter inhibited 2.4 v i max 2.4 v i max 2.4 v i max 2.4 v i max or open or open or open or open i inh inhibit current converter operating ?0.5 ?0.5 ?0.5 ? 0.5 ma converter inhibited 1 1 1 1 i i inh input current when the v i min ? v i max 3.0 3.0 3.0 3.0 converter is inhibited i inr p inrush peak current v i = v i nom 4 3.8 3.7 4.2 5.6 a f s switching frequency v i min ? v i max , i o = 0 ? i o nom approx. 400 approx. 400 approx. 400 approx. 300 khz i i rr reflected ripple current i o = 0 ? i o nom 50 30 20 10 ma pp v i rfi input rfi level en 55022 3 bbbb conducted and radiated 1 v i min will not be as stated, if v o is increased above v o nom by use of the r or trim input. if the output voltage is set to a higher value, v i min will be proportionally increased. 2 measured with a resistive and the max. admissible capacitive load. 3 measured with a lead lenght of 0.1 m, leads twisted. double output units with both outputs in parallel. 70/110 imx7 types need an external capacitor at the input. (e.g. 1 f film or ceramic) 4 source impedance according to prets 300132-2, version 4.3, at v i nom . 5 the dc-dc converter shuts down automatically at approx. 38 v. 6 operation at lower input voltage possible: p o approx. 80% of p o nom at v i min = 14.4 v. fig. 3 converter start-up and rise time v o nom v o t start up t rise t 04008a
? bcd20007 rev aa page 5 of 14 www.power-one.com imx7 dc-dc series data sheet 7-watt dc-dc converters input transient voltage protection in many applications transient voltages on the input of the converter are always possible caused, for example by short circuits between vi+ and vi?, where the network inductance may cause high energy pulses. in order to protect the converters, transient suppressors are fitted to the input; see table below: table 3: built-in transient voltage suppressor model breakdown peak power peak pulse voltage at 1 ms current v br nom p p i pp 20imx7 1 overvoltage lockout at approx. 38 v 40imx7 2 100 v 1500 w 11 a 70imx7 2 144 v 600 w 2.9 a 110imx7 2 167 v 600 w 2.5 a 1 the built-in overvoltage trigger shuts down the converter at approx. 38 v protecting the input up to 50 v. for higher transient voltages an external suppressor or voltage limiting circuit as, e.g., for iec/en 61000-4-5, level 2 compliance should be provided. 2 if transients generating currents above the peak pulse current are possible, an external limiting network such as the circuit recommended for iec/en 61000-4-5, level 2 compliance is necessary. table 4: components for external circuitry to comply with iec/en 61000-4-5 circuit ref. 20imx7 40imx7 70imx7 1 10imx7 l 330 h, 0.115 ? 330 h, 0.42 ? 1000 h, 2.9 ? 330 h 1 a 600 ma 290 ma 200 ma c 68 f, 63 v 68 f, 100 v 47 f, 150 v 200 f, 200 v d 1.5ke39a n.a. n.a. n.a. fig. 4 example for external circuitry to comply with iec/en 61000-4-5, level 2 (transzorb d only for 20imx7). to achieve iec/en 61000-4-5, level 2 compliance, an additional inductor and capacitor should be provided externally as shown in the figure below. the components should have similar characteristics as listed in table 4. note : the suppressor diode d is only necessary for 20imx7 models. to withstand 150 v transients according to 19 pfl 1, applicable for 40 imx7 models, the same external circuitry with similar components as for iec/en 61000-4-5, level 2 compliance can be used. vi+ vi? 07064 c l d + i input fuse and reverse polarity protection the suppressor diode on the input also provides for reverse polarity protection by conducting current in the reverse direction, thus protecting the converter. an external fuse is required to limit this current. we recommend: ? for 20imx7 a fast 2 a (f2a) fuse ? for 40imx7 a fast 1 a (f1a) fuse ? for 70imx7 a fast 0.63 a (f.63a) fuse ? for 110imx7 a fast 0.63 a (f.63a) fuse inrush current the inrush current has been kept as low as possible by choosing a very small input capacitance. a series resistor may be inserted in the input line to limit this current further. fig. 5 typical inrush current at v i nom , p o nom measured according to ets 300132-2 (40imx7). 0 1 2 3 a 0 20 40 60 80 s 04030a 4
? bcd20007 rev aa page 6 of 14 www.power-one.com imx7 dc-dc series data sheet 7-watt dc-dc converters electrical output data general conditions: ?t a = 25c, unless t c is specified. ? pin i connected with vi ?; trim or r input left open-circuit. table 5a: output data for single-output models output v o nom 3.3 v 5.1 v characteristics conditions min typ max min typ max unit v o output voltage setting v i nom 3.28 3.32 5.07 5.13 v i o nom output current (nom.) v i min ? v i max 1.5 1.2 a i o l current limit 2 v i nom 3.0 2.4 ? v o line and load regulation v i min ? v i max 1 1 % i o = (0.05 ? 1) i o nom v o output voltage noise v i min ? v i max 5 70 70 mv pp 20/40/70imx7 i o = i o nom 6 20 40 20 40 110imx7 40 50 40 50 v o clp output overvoltage limit 7 minimum load 1% 115 130 115 130 % c o ext admissible capacitive load 2500 2000 mf v o d dynamic voltage deviat. v i nom 250 250 mv t d load recovery time i o nom ? 1 / 2 i o nom 11ms regulation vo temperature coefficient v i min ? v i max 0.02 0.02 %/k ? v o / ? t c ( t c min to t c max ) i o = (0.05 ? 1) i o nom table 5b: output data for double-output models output v o nom 2 5 v 2 12 v 2 15 v 2 24 v characteristics conditions min typ max min typ max min typ max min typ max unit v o1 output voltage setting v i nom 4.96 5.04 11.90 12.10 14.88 15.12 23.81 24.19 vdc v o2 i o1 = i o2 = 0.5 i o nom 4.95 5.05 11.88 12.12 14.85 15.15 23.75 24.25 i o nom output 20imx7 v i min ? v i max 2 0.6 2 0.25 2 0.2 2 0.13 a current 1 40/70/110imx7 2 0.7 2 0.3 2 0.24 2 0.15 i o l current 20imx7 v i nom 2.4 1.0 0.95 0.5 limit 2 3 40/70/110imx7 2.8 1.2 1.1 0.6 ? v o1 line regulation v i min ? v i max , i o nom 1 1 1 1 % ? v o l load regulation 4 v i nom , (0.1 ? 1) i o nom 3 3 3 3 v o1, 2 output voltage noise v i min ? v i ma 5 80 120 150 240 mv pp i o = i o nom 6 20 40 25 50 30 60 50 100 v o clp output overvoltage limit 7 minimum load 1% 115 130 115 130 115 130 115 130 % c o ext admissible capacitive load 3 2000 300 200 100 f v o d dynamic voltage deviat. v i nom 150 330 350 600 mv t d load recovery time i o nom ? 1 / 2 i o nom 111 1ms regulation vo temperature coefficient v i min ? v i max 0.02 0.02 0.02 0.02 %/k ? v o / ? t c ( t c min to t c max ) i o = (0.05 ? 1) i o nom 1 each output is capable of delivering full output power p o nom according to 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 not tracking with the r control.
? bcd20007 rev aa page 7 of 14 www.power-one.com imx7 dc-dc series data sheet 7-watt dc-dc converters thermal considerations if a converter, mounted on a pcb, is located in free, quasi- stationary air (convection cooling) at the maximum ambient temperature t a max (see table temperature specifications) and is operated at nominal input voltage and output power, the case temperature t c 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 depend on 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, and under practical operating conditions, the ambient temperature t a may be higher or lower. 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. the installer must ensure that under all operating conditions t c remains within the limits stated in the table temperature specifications. short-circuit behavior the current limitation shuts down the converter, when a short circuit is applied to the output. it acts self-protecting, and automatically recovers after removal of the overload condition. fig. 7 v o versus i o (typ.) of single-output models with v o = 5.1 v fig. 8 v o versus i o (typ.) of double-output models (2 12 v) with both outputs in parallel fig. 9 cross load regulation (typ.) of double-output models (2 12 v). the cross-load effect is negligible. output overvoltage protection the outputs are protected against overvoltages by zener diodes. in the event of an overvoltage, the converter will shut down and attempt to restart automatically. the main purpose of this feature is to protect against possible overvoltages, which could occur due to a failure in the feedback control circuit. the converters are not designed to withstand external overvoltages applied to the outputs. connection in series or parallel the outputs of single or double-output models can be connected in series without any precautions, taking into consideration that the output voltage should remain below 60 v for selv operation. both outputs of double-output models can be connected in parallel without any precautions. several converters (single- or double-output models) with equal output voltage can be put in parallel and will share their output current quite equally. however, this may cause start-up problems and is only recommended in applications, where one converter is able to deliver the full load current, e.g., in true redundant systems. typical performance curves fig. 6 overload switch-off (hiccup mode). 70 100 v o [%] t 05041a 0.3 s overload short-circuit condition switch-off 0 7 8 9 10 11 12 13 v o [v] 0.2 0.4 0.6 0.8 i o total [a] 0 05086a 5.5 5.0 4.5 4.0 3.5 3.0 0 0.4 0.8 1.2 1.6 i o [a] v o [v] 05087a 11 11.5 12 12.5 13 13.5 v o1 [v] 0.10 0.15 0.20 0.25 0.3 i o1 [a] 0.05 05088a i o2 = 0.3 a i o2 = 0.03 a
? bcd20007 rev aa page 8 of 14 www.power-one.com imx7 dc-dc series data sheet 7-watt dc-dc converters fig. 11 efficiency versus input voltage and load. typical values (40imx7-12-12-8). fig. 10 flexible load distribution on double-outputs models (2 12 v) with load variation from 0 to 150% of p o1 nom on output 1. output 2 loaded with 25% of p o2 nom . v o1 , v o2 [v] i o1 i o1 nom 05059a 12.8 12.4 12 11.6 11.2 030 60 90 120 150 [%] v o2 v o1 40 50 60 70 80 90 05052a 25 50 75 100 % p o p o nom v i nom v i max v i min [%] auxiliary functions inhibit function the output(s) of the converter may be enabled or disabled by means of a logic signal (ttl, cmos, etc.) applied to the inhibit pin. no output voltage overshoot will occur when the unit 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). converter operating: ?10 v to 0.8 v converter inhibited or inhibit pin i left open: 2.4 v to v i max (20/40imx7) 2.4 v to 75 v (70/110imx7) adjustable output voltage as a standard feature, all imx7 converters offer adjustable output voltage(s) by using a control pin. if this pin is left open- circuit, the output voltage is set to v o nom . the output voltage is adjustable in the range 75 to 105% v o nom .the circuit works for single- and double-output models in a different way. 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 r-input: the r input (pin 13) 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. a) adjustment by means of an external resistor: depending upon the value of the required output voltage, a resistor r ext1 or r ext2 shall be connected as shown in the figure below: fig. 12 if the inhibit is not used, the inhibit pin should be connected to vi? vi+ vi ? i 06070 r vo+ vo? vi+ vi? r ext2 r ext1 06131a fig. 13 output voltage control with external resistor
? bcd20007 rev aa page 9 of 14 www.power-one.com imx7 dc-dc series data sheet 7-watt dc-dc converters fig. 14 output voltage adjust for single-output models either: r ext1 between the r pin and vo? to achieve an output voltage adjustment range of v o = 75 to 100% v o nom (85 to 100% for 3.3 v outputs): v o r ext1 4 k ? ? ????????? v o nom ? v o or: r ext2 between the r pin and vo+ to achieve an output voltage range of approximately v o = 100 to 105 % v o nom : ( v o ? 2.5 v) 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 is 1.96 to 2.62 v and allows for adjustment in the range of 75 to 105% v o nom . v o ? 2.5 v v ext ???????? v o nom caution: applying an external voltage >2.75 v may damage the converter. note: attempting to adjust the output below this range will cause the converter to shut down (hiccup mode). r vo+ vo? + v ext 4 k ? v ref = 2.5 v control circuit vi+ vi? r ext1 r ext2 06029a ? + ? double-output models with trim input: the trim input (pin 4) of double-output models is referenced to the primary side. the figure below shows the circuit topology. adjustment of the output voltage is possible in the range of 100 to 105% v o nom using an external resistor, or in the range of 75 to 105% v o nom using an external voltage source. trim vo1+ vo2? + v ext ? vi+ vi? r ext vo1? vo2+ 06089a control circuit v ref =2.5 v a) adjustment by means of an external resistor r ext . programming of the output voltage by means of an external resistor r ext1 is possible within a limited range of 100 to 105% v o nom . r ext should be connected between pin 4 and vi ?. the following table indicates suitable resistor values for typical output voltages under nominal conditions ( v i nom , i o = 0.5 i o nom ), with paralleled outputs or equal load conditions on each output. caution: connection of r ext to vi+ may damage the converter. b) adjustment by means of an external voltage source v ext . for external output voltages in the range of 75 to 105% v o nom a voltage source v ext (0 to 20 v) is required, connected to the trim-input (pin 4) and vi?. the table below indicates typical v o versus v ext values under nominal conditions ( v i nom , i o = 0.5 i o nom ), with paralleled outputs or equal load conditions on each output. direct paralleling of the trim-inputs of converters connected in parallel is feasible. note: applying a control voltage greater than 20 v will set the converter into a hiccup mode. fig. 15 output voltage adjust for double-output models table 6: 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 [ kw] 105 to 108 (107 typically) 0 105 1.5 104 5.6 103 12 102 27 101 68 100 table 7: 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
? bcd20007 rev aa page 10 of 14 www.power-one.com imx7 dc-dc series data sheet 7-watt dc-dc converters electromagnetic emissions occur in many installations, but especially in battery-driven mobile applications. electromagnetic compatibility (emc) a suppressor diode together with an input filter form an effective protection against high input transient voltages which typically fig. 16 typical conducted emissions (quasi-peak) at the input at v i nom and i o nom according to en 55011/22. output leads 0.1 m, twisted. (40imx7-15-15). external capacitor (1 f ceramic or film) required at the input for 70imx7, 110imx7 models. electromagnetic immunity table 8: immunity type tests phenomenon standard class coupling value waveform source test in per- level mode 1 applied imped. procedure oper. form. 2 electrostatic iec/en 2 contact discharge 4000 v p 1/50 ns 330 ? 10 positive and yes b discharge 61000-4-2 3 air discharge 8000 v p 10 negative to case 5 discharges electromagnetic iec/en 3 3 antenna 10 v/m am 80% n.a. 80 ? 1000 mhz yes a field 61000-4-3 1 khz 3 antenna 10 v/m pm, 50% duty n.a. 900 mhz yes a cycle, 200 hz repetition frequ. electrical fast iec/en 4 direct +i/?i 4000 v p bursts of 5/50 ns 50 ? 60 s positive, yes b transients/burst 61000-4-4 5 khz repet. rate, 60 s negative transients with transients per 15 ms burst coupling mode duration, and 300 ms period surges iec/en 3 4 +i/?i 2000 v p 1.2/50 s 2 ? 5 pos. and 5 neg. yes b 61000-4-5 surges rf conducted iec/en 3 +i/?i 3 vac am modul. 80% 50 ? 0.15 to 80 mhz yes a immunity 61000-4-6 (140 dbv) 1 khz 150 ? 1 i = input, o = output 2 performance criterion: a = normal operation, no deviation from specifications, b = temporary deviation from specs possible. 3 corresponds to the railway standard en 50121-3-2:2000, table 9.1 4 external components required. 5 r or trim pin open, i pin connected with vi?. 07023a en 55022 a en 55022 b 80 70 60 50 40 30 20 10 0 0.01 0.05 0.1 0.5 1 2 5 10 20 30 [dbv] mh z 0.02 fig. 17 typical radiated emissions at v i nom , i o nom , measured according to en 55011/22 with an antenna (distance 10 m). output leads 0.1 m, twisted (70imx-7-15-15). 35 30 25 20 15 10 0 30 40 50 100 200 300 60 80 [mhz] [dbv/m] 400 500 600 800 07024a en 55022 b
? bcd20007 rev aa page 11 of 14 www.power-one.com imx7 dc-dc series data sheet 7-watt dc-dc converters immunity to environmental conditions table 9: 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 section 507.2 relative humidity: 93 +2/-3 % not duration: 56 days operating ea shock iec/en 60068-2-27 1 acceleration amplitude: 100 g n = 981 m/s 2 converter (half-sinusoidal) mil-std-810d section 516.3 bump duration: 6 ms operating number of bumps: 18 (3 each direction) eb bump iec/en 60068-2-29 acceleration amplitude: 40 g n = 392 m/s 2 converter (half-sinusoidal) mil-std-810d section 516.3 bump duration: 6 ms operating number of bumps: 6000 (1000 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) fh vibration, iec/en 60068-2-64 acceleration spectral density: 0.05 g n 2 /hz converter broad-band frequency band: 10 to 500 hz operating random acceleration magnitude: 4.9 g n rms (digital control) test duration: 3 h (1 h each axis) kb salt mist, cyclic iec/en 60068-2-52 concentration: 5% (30 c) converter (sodium chloride duration: 2 h per cycle not nacl solution) storage: 40 c, 93% rel. humidity operating storage duration: 22 h per cycle number of cycles: 3 table 10: temperature specifications, valid for air pressure of 800 to 1200 hpa (800 to 1200 mbar) temperature -9 -8 (standard) characteristics conditions min max min max unit t a ambient temperature operational 1 ?40 71 ?40 85 c t c case temperature ?40 95 ?40 105 t s storage temperature non operational ?55 100 ?55 105 1 see thermal considerations table 11: mtbf and device hours mtbf ground benign ground fixed ground mobile t c = 40 c t c = 40 c t c = 70 c t c = 50 c 40imx7-05-8 (mil-hdbk-217f) 1 672 000 h 248 000 h 83 800 h 84 800 h 40imx7-15-15-8 (mil-hdbk-217f) 1 640 000 h 214 000 h 83 000 h 77 000 h temperatures 1 covers also en50155/en61373 category 1, class b, body mounted (= chassis of coach) failure rates
? bcd20007 rev aa page 12 of 14 www.power-one.com imx7 dc-dc series data sheet 7-watt dc-dc converters mechanical data dimensions in mm. weight: <20 g fig. 18 case imx7 with standard pinout fig. 19 open frame (option z) safety and installation instructions installation instruction installation of the converters 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. connection to the system shall be made via a printed circuit board; see mechanical data . the converters should be connected to a secondary circuit. do not open the converter. ensure that a converter failure does not result in a hazardous condition. to prevent excessive current flowing through the input lines in case of a short-circuit, an external fuse specified in section input fuse and reverse polarity protection should be installed in the non-earthed input supply line. european projection 50.8 (2") 3.81(0.15") 3.81(0.15") 3.81(0.15") 5 3.81 (0.15") 20.3 (0.8") 3 5.08 (0.2") pt 2.2 self tapping screws 1 4 10 14 0.8 1.2 (0.03 0.05") pins ? 1.6 (0.06) pcb holes 10.5 (0.41") 3.4 (0.13") 45.7 (1.8") 25.4 (1") 4.6 (0.18") s09030a measuring point of case temperature t c pin allocation fig. 20 footprint table 12: pin allocation (standard pinout and option z) pin single output double output 1vi+ vi+ 2vi? vi? 3i i 4 n.c. trim 10 vo? vo1? 11 vo+ vo1+ 12 vo? vo2? 13 r vo2+ 14 n.c. n.c. bottom view 1 4 10 14 10011 2 3 11 12 13 43.2 (1.7") s90002a 48 (1.9") 5 x 3.81 (0.15") 1.27 (0.05") 23 (0.9") 8.25 (0.32") 3 x 5.08 (0.2") 1 4 10 14 3.5 (0.14") 1.2 (0.5")
? bcd20007 rev aa page 13 of 14 www.power-one.com imx7 dc-dc series data sheet 7-watt dc-dc converters standards and approvals the converters are approved by ul and tv according to ul 60950, can/csa c22.2 no. 950-95 and iec/en 60950-1:2000. the converters have been evaluated for: ? building in ? supplementary insulation input to output, based on their maximum input voltage ? pollution degree 2 environment ? connecting the input to a secondary circuit, which is subject to a maximum transient rating of 1500 v for 20imx4 and 40imx7, 2000 v for 70imx7, and 2500 for 110imx7 models. the converters are subject to manufacturing surveillance in accordance with the above mentioned standards. railway applications to comply with railway standards, all components are coated with a protective lacquer (except option z). protection degree the protection degree of the converters is ip 30, except open- frame models (option z). cleaning agents in order to avoid possible damage, any penetration of cleaning fluids should be prevented, since the power supplies are not hermetical sealed. however, the open-frame models (option z) leave the factory unlacquered and may be cleaned and lacquered by the customer, for instance together with the mother board. consult power-one for suitable cleaning agents. nuclear and medical applications - power-one products are not designed, intended for use in, or authorized for use as critical components in life support systems, equipment used in hazardous environments, or nuclear control systems without the express wr itten consent of the respective divisional president of power-one, inc. 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. description of options option z: open frame for applications, where the protection of the case is not necessary or in the case that the motherboard should be cleaned and lacquered with the converter fitted. table 12: electric strength test voltages characteristic input to output 20/40imx 70imx 110imx o/o 1 unit factory test >1 s 1.2 1.5 2.0 0.1 kvac equivalent dc volt. 1.5 2.0 2.5 0.15 kvdc coupling 1.2 1.2 1.2 - nf capacitance insulation resist. >100 >100 >100 - m ? at 500 vdc 1 between outputs of double-output models isolation the electric strength test is performed in the factory as routine test in accordance with en 50116 and iec/en 60950, and should not be repeated in the field. power-one will not honor any warranty claims resulting from electric strength field tests.
? bcd20007 rev aa page 14 of 14 www.power-one.com imx7 dc-dc series data sheet 7-watt dc-dc converters ec declaration of conformity we power-one ag ackerstrasse 56, ch-8610 uster declare under our sole responsibility that imx7 series dc-dc converters carrying the ce- mark are in conformity with the provisions of the low voltage directive (lvd) 73/23/eec of the european communities. conformity with the directives is presumed by conformity with the following harmonised standards: en 61204:1995 (= iec 61204:1993, modified) low-voltage power supply devices, dc output - performance characteristics and safety requirements en 60950-1:2000 (= iec 60950-1:2000) safety of information technology equipment. the installation instructions given in the corresponding data sheet describe correct installation leading to the presumption of conformity of the end product with the lvd. all imx7 dc-dc converters are components, intended exclusively for inclusion within other equipment by an industrial assembly operation or by professional installers. they must not be operated as standalone products. hence conformity with the electromagnetic compatibility directive 89/336/eec (emc directive) needs not to be declared. nevertheless, guidance is provided in the data sheets on how conformity of the end product with emc standards under the responsibility of the installer can be achieved, from which conformity with the emc directive can be presumed. uster, 10 june 2006 power-one ag rolf baldauf johann milavec vice president engineering director projects and ip


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