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cp10.241-60 cp-series 24v, 200w, dc/dc c onverter p r e l i m i n a r y dc/dc c onverter ? en 50155 railway compliant ? conformal coated pc-boards ? quick-connect spring-clamp terminals ? 67-154vdc wide-range input ? width only 39mm ? efficiency up to 94.5% ? excellent partial load efficiency ? minimal inrush current surge ? full power between -40c and +70c ? dc-ok relay contact ? reverse input polarity protected ? 3 year warranty 1/27 g eneral d escription the dc/dc converter cp10.241-60 is designed specifically for railway & transportation app lications. it is approved according to the en 501 55 standard, which is an international standard cove ring electronic equipment used on rolling stock for railway applications. the standard covers aspects such as temperature, humidity, shock, vibration, emi and ot her parameters. because of these requirements, the unit is equipped with conformal coated pc-boards. the unit features a dc-ok signal contact for remote monitoring, and quick-conn ect spring-clamp terminals for a reliable connection even when mechanical vibration and shock are involv ed. the unit also covers an extreme wide temperature range from -40c up to +70c with full output current. this dc/dc converter comes in a very compact housing and requires only 39mm space on the din-rail due to the high efficiency and low power losses. the high efficiency is achieved by utilizing cutting edge technology and other unique design techniques. s hort - form d ata output voltage dc 24v adjustment range 24 - 28v output current 8.3 C 7.1a continuous, < +70c 8.3 C 7.1a for 10 minutes, < +85c input voltage dc dc 96 - 110v - 30%/ +40% input voltage range 67.2 C 154v input current dc 2.25 / 1.95a at 96 / 110vdc input inrush current 2.5a pk efficiency 94.3 / 94.5% at 96 / 110vdc losses 12.1 / 11.6w at 96 / 110vdc hold-up time 34ms temperature range -40 to +70c size (wxhxd) 39x124x117mm without din-rail weight 620g / 1.37lb o rder n umbers dc/dc converter cp10.241-60 accessory zm4.wall wall/ panel mount bracket zm12.side side mount bracket yr20.242 redundancy module yr20.246 redundancy module uf20.241 buffer module m arkings ind. cont. e q. ul 508 planned ul 60950-1 planned emc, lvd planned planned may 2017 / rev. 0.1 ds-qs10.241-60-en preliminary all parameters are typical values specified at 24v, 8.3a output, 110vdc input, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone +49 89 9278 0 germany
cp10.241-60 cp-series 24v, 200w, dc/dc c onverter p r e l i m i n a r y i ndex page page 1. intended use .......................................................3 2. installation requirements ...................................3 3. dc-input ...............................................................4 4. ac-input ...............................................................5 5. input inrush current ...........................................5 6. output .................................................................6 7. hold-up time .......................................................7 8. dc-ok relay contact ..........................................8 9. functional diagram .............................................8 10. efficiency and power losses ................................9 11. lifetime expectancy ..........................................10 12. mtbf ..................................................................10 13. terminals and wiring ........................................11 14. front side and user elements ...........................12 15. emc ....................................................................13 16. environment ......................................................14 17. protection features ...........................................15 18. safety features ..................................................15 19. dielectric strength ............................................16 20. approvals and declarations ..............................17 21. rohs, reach and othe r fulfilled standards ...17 22. physical dimensions and weight ..................... 18 23. accessories ........................................................ 19 23.1. zm12.side - side mounting bracket ........19 23.2. zm4.wall C wall/panel mount bracket .20 23.3. uf20.241 buffer module ..........................21 23.4. yr20.242 - redundancy module ..............21 23.5. yr20.246 - redundancy module with automated load sharing ....................................21 24. application notes ............................................. 22 24.1. peak current capability ...........................22 24.2. inductive and capacitive loads ................23 24.3. external input protection .........................23 24.4. charging of batteries ...............................23 24.5. series operation .......................................24 24.6. parallel use to increase output power ....24 24.7. parallel use for redundancy ....................25 24.8. back-feeding loads ..................................26 24.9. use in a tightly sealed enclosure ............26 24.10. mounting orientations ............................27 the information given in this document is correct to the best of our kn owledge and experience at the time of publication. if not expressly agreed othe rwise, this information does not represent a warranty in the legal sense of the word. as the state of our knowledge an d experience is constantly changing, the information in this data sheet is subject to revision. we therefore ki ndly ask you to always use the latest issue of this document (available under www.pulspower.com). no part of this document may be reproduced or utilized in any form without our prior permission in writing. some parts of this unit are patent by puls (us patent no 091662,063, des. 424,529, ). t erminology and a breviations pe and symbol pe is the abbreviation for p rotective e arth and has the same meaning as the symbol . earth, ground this document uses the term earth which is the same as the u.s. term ground. t.b.d. to be defined, value or de scription will follow later. dc 110v a figure displayed with the ac or dc before the value represents a nominal voltage with standard tolerances (usually 15%) included. e.g.: dc 12v describes a 12v battery disregardi ng whether it is full (13.7v) or flat (10v) 110vdc a figure with the unit (vdc) at the end is a momentary figure without any additional tolerances included. may a key word indicating flexibility of choice with no im plied preference. shall a key word indicating a mandatory requirement. should a key word indicating flexibility of choi ce with a strongly pref erred implementation. may 2017 / rev. 0.1 ds-qs10.241-60-en preliminary all parameters are typical values specified at 24v, 8.3a output, 110vdc input, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone +49 89 9278 0 germany 2/27 cp10.241-60 cp-series 24v, 200w, dc/dc c onverter p r e l i m i n a r y 1. i ntended u se this device is designed for installation in an enclosure a nd is intended for the general professional use such as in rolling stock for railway applications or in industrial control, office, communi cation, and instrument ation equipment. do not use this dc/dc converter in equipment, where ma lfunction may cause severe pe rsonal injury or threaten human life. 2. i nstallation r equirements this device may only be installed and put into opera tion by qualified personnel. this device does not contain serviceable parts. the tripping of an internal fuse is caused by an internal defect. if damage or malfuncti on should occur during installation or operation, i mmediately turn power off and send unit to the factory for inspection. mount the unit on a din-rail so that the input terminals are located on the bottom of the unit. for other mounting orientations see de-rating requirements in this document. see chapter 24.10. this device is designed for convection cooling and does not require an external fan. do not obstruct airflow and do not cover ventilation grid (e.g. cable conduits) by more than 15%! keep the following installation clearance s: 40mm on top, 20mm on the bottom, 5mm on the left and right sides are recommended when the device is loaded permanently with more than 50% of th e rated power. increase this clearance to 15mm in case the adjacent device is a heat source (e.g. another power supply). warning risk of electrical shock, fi re, personal injury or death. - do not use the dc/dc converter wit hout proper grounding (protect ive earth). use the term inal on the input block for earth connection and not one of the screws on the housing. - turn power off before working on the devi ce. protect against inad vertent re-powering. - make sure that the wiring is correct by following all local and national codes. - do not modify or repair the unit. - do not open the unit as high voltages are present inside. - use caution to prevent any foreign objects from enteri ng the housing. - do not use in wet locations or in areas wh ere moisture or condens ation can be expected. - do not touch during power-on, and immediatel y after power-off. hot surfaces may cause burns. may 2017 / rev. 0.1 ds-qs10.241-60-en preliminary all parameters are typical values specified at 24v, 8.3a output, 110vdc input, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone +49 89 9278 0 germany 3/27 cp10.241-60 cp-series 24v, 200w, dc/dc c onverter p r e l i m i n a r y 3. dc-i nput use a battery or a similar dc source. a supply from th e intermediate dc-bus of a frequency converter is not recommended and can cause a malf unction or damage the unit. input voltage nom. dc 96-110v -30%/+40% input voltage range 67-154vdc 57-67vdc short term for 2s, no start at 57vdc input current typ. 2.25a at 8.3a and 96vdc input voltage, see fig. 3-3 typ. 1.95a at 8.3a and 110vdc input voltage, see fig. 3-3 allowed voltage between input to earth (ground) max. 300vdc continuous, iec 62477-1 allowed input ripple voltage max. 15vpp 3vpp 50hz C10khz 10khz C 50khz turn-on voltage typ. 64.5vdc steady-stat e value, temperature independent, see fig. 3-1 shut-down voltage typ. 62.5vdc steady-state value, temperature independent, see fig. 3-1 start-up delay typ. 700ms at 96vdc input, see fig. 3-2 typ. 600ms at 110vdc input, see fig. 3-2 rise time typ. 45ms at 8.3a constant current load, 0mf load capacitance typ. 90ms at 8.3a constant current load, 8mf load capacitance, see fig. 3-2 turn-on overshoot max. 200mv see fig. 3-2 external input protection see recommendations in chapter 24.3 . fig. 3-1 input voltage range fig. 3-2 turn-on behavior, definitions turn-on 67v rated input range max. 500ms v in p out 375vdc 154v shut-down start-up delay rise time overshoot - 5% output voltage input voltage fig. 3-3 input current vs. output load at 24v 8 01234 0 0.5 1.0 1.5 2.5 output current input current, typ. 567 9a 2.0 3a (a) 96vdc, (b) 110vdc (a) (b) may 2017 / rev. 0.1 ds-qs10.241-60-en preliminary all parameters are typical values specified at 24v, 8.3a output, 110vdc input, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone +49 89 9278 0 germany 4/27 cp10.241-60 cp-series 24v, 200w, dc/dc c onverter p r e l i m i n a r y 4. ac-i nput do not operate this dc/dc converter wi th an ac-input voltage. use the cp10.241 or cp10. 241-c1 (when conformal coating is needed) unit instead. 5. i nput i nrush c urrent an active inrush limitation circuit (inrush limiting fixed resistor which is bypasse d by a relay) limits the input inrush current after turn-on of the input voltage. the charging current into emi suppression capacitors is disregarded in th e first microseconds after switch-on. dc 96v dc 110v inrush current max. 8a peak 8a peak at 110vdc, temperature independent typ. 2.5a peak 2.5a peak at 110vdc, temperature independent inrush energy negligible low at 110vdc, temperature independent fig. 5-1 typical input inrush current behaviour at nominal load and 25c ambient 50ms/div input current 0.5a/div input voltage 20v/div output voltage 5v/div may 2017 / rev. 0.1 ds-qs10.241-60-en preliminary all parameters are typical values specified at 24v, 8.3a output, 110vdc input, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone +49 89 9278 0 germany 5/27 cp10.241-60 cp-series 24v, 200w, dc/dc c onverter p r e l i m i n a r y 6. o utput output voltage nom. 24v adjustment range min. 24-28v guaranteed max. 30v *) at clockwise end position of potentiometer factory setting typ. 24.1v 0.2%, at full load, cold unit line regulation max. 10mv 67-154vdc load regulation max. 100mv static value, 0a ? 8.3a ripple and noise voltage max. 50mvpp 20hz to 20mhz, 50ohm output current nom. 8.3a at 24v , ambient temperature <70c, see fig. 6-1 nom. 7.1a at 28v, ambien t temperature <70c, see fig. 6-1 typ. 30a up to 12ms, output voltage stays above 20v, see fig. 6-2 and fig. 24-3 , this peak current is available once every five seconds (firmware controlled). output power nom. 200w continuously available overload behaviour cont. current output voltage > 13vdc, see fig. 6-1 hiccup plus mode **) output voltage < 13vdc, see fig. 6-1 short-circuit cu rrent min. 9.5a ***) load impedance 50mohm, see fig. 6-1 max. 13.5a ***) load impedance 50mohm, see fig. 6-1 max. 4.3a average (r.m.s.) cu rrent, load impedance 50mohm, see fig. 6-3 min. 28a up to 12ms, load impedance 50mohm, see fig. 6-2 typ. 30.5a up to 15ms, load impedance 50mohm, see fig. 6-2 output capacitance typ. 4 400f included inside the power supply *) this is the maximum output voltage which can occur at the clockwise end position of the potentiometer due to tolerances. it is not a guaranteed value, which can be achieved. the typical value is 28.6v. **) hiccup plus mode at heavy overloads (when output voltage falls below 13v), the power supply delivers continuous output current for 2s. after thi s, the output is switched off for approx. 18s before a new start attempt is automatically performed. this cycle is repeated as long as the overload exists. if the overload has been cleared, the device will operate normally. see fig. 6-3 ***) discharge current of output capacitors is not included. fig. 6-1 output voltage vs. output current, typ. fig. 6-2 dynamic output current capability, typ. output voltage 0 01 4 8 12 28v 16 20 24 0 12a 6 2 4 8 adjustment range output current continuous current factory setting hiccup plus mode output voltage (dynamic behavior, < 12ms) 0 0 4 8 12 28v 16 20 24 50a 20 10 30 40 515253545 adjustment range output current may 2017 / rev. 0.1 ds-qs10.241-60-en preliminary all parameters are typical values specified at 24v, 8.3a output, 110vdc input, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone +49 89 9278 0 germany 6/27 cp10.241-60 cp-series 24v, 200w, dc/dc c onverter p r e l i m i n a r y fig. 6-3 short-circuit on output, hiccup plus mode, typ. output current 0 11.5a 18s 18s 18s 2s 2s 2s t short -circuit normal operation normal operation 7. h old - up t ime the internal capacitor, which supplies th e energy for the hold-up time is isolat ed by a diode to the input voltage. a short on the input line does not discha rge the internal hold-up capacitor. dc 96v dc 110v hold-up time typ. 89 ms 89ms at 4.15a, see fig. 7-1 min. 67ms 67ms at 4.15a, see fig. 7-1 typ. 45ms 45ms at 8.3a, see fig. 7-1 min. 37ms 37ms at 8.3a, see fig. 7-1 fig. 7-1 hold-up time vs. input voltage fig. 7-2 shut-down behavior, definitions 0 20 40 60 80 100ms 70 90 110 130 150vdc input voltage hold-up time at 8.3a, typ. at 4.14a, min. at 4.15a, typ. at 8.3a, min. - 5% hold-up time output voltage input voltage may 2017 / rev. 0.1 ds-qs10.241-60-en preliminary all parameters are typical values specified at 24v, 8.3a output, 110vdc input, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone +49 89 9278 0 germany 7/27 cp10.241-60 cp-series 24v, 200w, dc/dc c onverter p r e l i m i n a r y 8. dc-ok r elay c ontact this feature monitors the output voltage on the output terminals of a running power supply. contact closes as soon as the output voltage reaches typ. 90% of the adjusted output voltage level. contact opens as soon as the output voltage dips more than 10% belo w the adjusted output voltage. short dips will be extended to a signal length of 100ms. dips shorter th an 1ms will be ignored. contact ratings maximal 60vdc 0.3a, 30v dc 1a, 30vac 0.5a, resistive load minimal permissible load: 1ma at 5vdc isolation voltage see dielec tric strength table in section 18. fig. 8-1 dc-ok relay contact behavior 100ms 0.9* v adj < 1ms 10% open v out = v adj open closed closed > 1ms 9. f unctional d iagram fig. 9-1 functional diagram + + - - dc-ok contact output over- voltage protection boost converter (pre conditioning) output voltage regulator output filter dc-ok relay output voltage monitor output power manager temper- ature shut- down dc-ok led input fuse input filter active inrush limiter v out power converter + - reverse polarity and back-feeding protection - may 2017 / rev. 0.1 ds-qs10.241-60-en preliminary all parameters are typical values specified at 24v, 8.3a output, 110vdc input, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone +49 89 9278 0 germany 8/27 cp10.241-60 cp-series 24v, 200w, dc/dc c onverter p r e l i m i n a r y 10. e fficiency and p ower l osses dc 96v dc 110v efficiency typ. 94.3% 94.5% at 24v, 8.3a average efficiency *) typ. 93.1% 93.5% 25% at 2.1a, 25% at 4.2a, 25% at 6.2a. 25% at 8.3a power losses typ. 2.8w 2.6w at 24v, 0a typ. 7.2w 6.8w at 24v, 4.2a (= 50% load) typ. 12.1w 11.6w at 24v, 8.3a *) the average efficiency is an assumption for a typical application where the dc/dc converter is loaded with 25% of the nomin al load for 25% of the time, 50% of the nominal load for another 25% of the time, 75% of the nominal load for another 25% of the time and w ith 100% of the nominal load for the rest of the time. fig. 10-1 efficiency vs. output current, at 24v, typ. fig. 10-2 losses vs. output current, at 24v, typ. efficiency 123456789 a 87 88 89 90 91 92 output current 93 94 95% (a) 96vdc, (b) 110vdc (a) (b) power losses 01234567 9a 0 2 8 10 output current 12w 8 4 6 (a) 96vdc, (b) 110vdc (a) (b) may 2017 / rev. 0.1 ds-qs10.241-60-en preliminary all parameters are typical values specified at 24v, 8.3a output, 110vdc input, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone +49 89 9278 0 germany 9/27 cp10.241-60 cp-series 24v, 200w, dc/dc c onverter p r e l i m i n a r y 11. l ifetime e xpectancy the lifetime expectancy shown in the table indicates the minimum operating hou rs (service life) a nd is determined by the lifetime expectancy of the built-in el ectrolytic capacitors. lifetime expectan cy is specified in operational hours and is calculated according to the capaci tors manufacturer sp ecification. the manufacturer of the electrolytic capacitors only guarantees a maximum life of up to 15 years (131 400h ). any number exceeding th is value is a calculated theoretical lifetime which can be used to compare devices. dc 96v dc 110v lifetime expectancy 171 000h 194 000h at 24v, 4.2a and 40c 485 000h 549 000h at 24v, 4.2a and 25c 112 000h 119 000h at 24v, 8.3a and 40c 316 000h 336 000h at 24v, 8.3a and 25c 12. mtbf mtbf stands for mean t ime between f ailure, which is calculated according to statistical device fa ilures, and indicates reliability of a device. it is the statisti cal representation of the li kelihood of a unit to fail and does not necessarily represent the life of a product. the mtbf figure is a statistica l representation of the likeli hood of a device to fail. a mt bf figure of e.g. 1 000 000h means that statistically one unit will fail every 100 hours if 10 000 units are installed in the fi eld. however, it can not be determined if the failed unit has b een running for 50 000h or only for 100h. for these types of units the mttf ( mean t ime t o f ailure) value is the same value as the mtbf value. dc 96v dc 110v mtbf sn 29500, iec 61709 t.b.d. t.b.d. at 24v, 8.3a and 40c t.b.d. t.b.d. at 24v, 8.3a and 25c mtbf mil hdbk 217f t.b.d. t.b.d. at 24v, 8.3a and 40c, ground benign gb40 t.b.d. t.b.d. at 24v, 8.3a and 25c, ground benign gb25 t.b.d. t.b.d. at 24v, 8.3a and 40c, ground fixed gf40 t.b.d. t.b.d. at 24v, 8.3a and 25c, ground fixed gf25 may 2017 / rev. 0.1 ds-qs10.241-60-en preliminary all parameters are typical values specified at 24v, 8.3a output, 110vdc input, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone +49 89 9278 0 germany 10/27 cp10.241-60 cp-series 24v, 200w, dc/dc c onverter p r e l i m i n a r y 13. t erminals and w iring the terminals are ip20 finger safe con structed and suitable for field- and fa ctory wiring. shipped in open position. input and output dc-ok-signal type bi-stable, quick-connect spring-clamp terminals push-in terminals solid wire max. 6mm 2 max. 1.5mm 2 stranded wire max. 4mm 2 max. 1.5mm 2 american wire gauge awg 20-10 max. awg 28-16 max. wire diameter 2.8mm (including ferru les) max. 1.6mm (including ferrules) wire stripping length 10mm / 0.4inch 7mm / 0.28inch screwdriver not required not required recommended tightening torque no t applicable not applicable fig. 13-1 connecting a wire instructions: a) use appropriate copper cables that are designed for minimum operating temperatures of: 60c for ambient up to 45c and 75c for ambient up to 60c minimum 90c for ambient up to 70c minimum. b) follow national installation c odes and installation regulations! c) ensure that all strands of a stranded wire enter the terminal connection! d) ferrules are allowed. 11/27 1. insert the wire 2. close the lever to disconnect wire: reverse the procedure daisy chaining: daisy chaining (jumping from one dc/dc c onverter output to the next) is allo wed as long as the average output current through one terminal pin does not exceed 25a. if the current is higher, use a se parate distribution terminal block as shown in fig. 13-3 . fig. 13-2 daisy chaining of outputs fig. 13-3 using distribution terminals dc/dc converter + + - - input output load + - max 25a! dc/dc converter + + - - input output load + - distribution terminals dc/dc converter + + - - input output dc/dc converter + + - - input output may 2017 / rev. 0.1 ds-qs10.241-60-en preliminary all parameters are typical values specified at 24v, 8.3a output, 110vdc input, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone +49 89 9278 0 germany cp10.241-60 cp-series 24v, 200w, dc/dc c onverter p r e l i m i n a r y 14. f ront s ide and u ser e lements fig. 14-1 front side a input terminals (quick-connect spring-clamp terminals) + positive input C negative (return) input pe (protective earth) input b output terminals (quick-connect spring-clamp terminals, two positive pins and th ree negative pins) + positive output C ne gative (return) output c output voltage potentiometer open the flap to adjust the output voltage. factory set: 24.1v d dc-ok led (green) on, when the output voltage is >90% of the adjusted output voltage e dc-ok relay contact (push-in terminals) the dc-ok relay contact is sync hronized with the dc-ok led. see chapter 8 for details. may 2017 / rev. 0.1 ds-qs10.241-60-en preliminary all parameters are typical values specified at 24v, 8.3a output, 110vdc input, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone +49 89 9278 0 germany 12/27 cp10.241-60 cp-series 24v, 200w, dc/dc c onverter p r e l i m i n a r y 15. emc the dc/dc converter is suitable for rollin g stock railway applications, for applicat ions in industrial environment as well as in residential commercia l and light industry environment without any restrictions. emc immunity according generic standards: en 61000-6-1 and en 61000-6-2 and according to en 50121-3-2 electrostatic disc harge en 61000-4-2 contact discharge air discharge 8kv 15kv criterion a criterion a electromagnetic rf field en 61000-4-3 80mhz-2.7ghz 5.1-6ghz 20v/m 10v/m criterion a criterion a fast transients (burst) en 61000-4-4 input lines output lines dc-ok signal (coupling clamp) 4kv 2kv 2kv criterion a criterion a criterion a surge voltage on input en 61000-4-5 + ? - + ? pe, - ? pe 2kv 4kv criterion a criterion a surge voltage on output en 61000-4-5 + ? - + / - ? pe 1kv 2kv criterion a criterion a surge voltage on dc-ok en 61000-4-5 dc-ok signal ? pe 1kv criterion a conducted disturbance en 61000-4- 6 0.15-80mhz 10v criterion a power C frequency magnetic field en 61000-4-8 16.7hz, 50hz 0hz 100a/m 300a/m criterion a criterion a pulsed magnetic field en 61000-4-9 300a/m criterion b criterions: a: dc/dc converter shows normal operation behavior within the defined limits. b: during the test the output voltage can slightly drift below or above the specified limits. emc emission according generic standards: en 61000-6-3 and en 61000-6-4 and according to en 50121-3-2 conducted emission input lines cispr 16-1-2, cispr 16-2-1 limits for en 50121-3-2 fulfilled, limits for dc power port according en 61000-6-3 fulfilled conducted emission output lines cispr 16-1-2, cispr 16-2-1 limits for en 50121-3-2 fulfilled, limits for dc power port according en 61000-6-3 fulfilled radiated emission en 55011, en 55022, en 50121-3-2 class b this device complies with fcc part 15 rules. operation is subjected to fo llowing two conditions: (1) this device may not cause ha rmful interference, and (2) this device must accept any interferenc e received, including interference that may cause undesired operation. switching frequencies the power supply has three converters with three different switching frequencies included. two are nearly constant. the other one is input voltage and load dependent. switching frequency 1 100khz boost converter switching frequency 2 110khz to 140khz main conve rter, input voltage and output power dependent switching frequency 3 60kh z auxiliary converter may 2017 / rev. 0.1 ds-qs10.241-60-en preliminary all parameters are typical values specified at 24v, 8.3a output, 110vdc input, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone +49 89 9278 0 germany 13/27 cp10.241-60 cp-series 24v, 200w, dc/dc c onverter p r e l i m i n a r y 16. e nvironment conformal coating yes all pc- boards are conformal coated operational temperature *) -40c to +70c (-40f to 158f) continuous operation, see fig. 16-1 +70c to +85c (185f to 185f) for maximal 10 minutes every hour storage temperature -40 to +85c (-40 f to 185f) for storage and transportation humidity **) 5 to 95% r.h. iec 60068-2-30 vibration sinusoidal 2-17.8h z: 1.6mm; 17.8-500hz: 2g ***) 2 hours / axis iec 60068-2-6; dc/dc converter in operation vibration broadband 1.01grms for 10 minutes; 5-150hz ***) iec 60068-2-64, dc/dc c onverter in operation; tests limits according to en 61373 vibration broadband 5.72grms for 300 minutes; 5-150hz ***) iec 60068-2-64, dc/dc converter not in operation; tests limits according to en 61373 shock 30g 6ms, 20g 11ms, 50g 30ms ***) 3 bumps / direction, 18 bumps in total iec 60068-2-27; dc/dc c onverter in operation shock 50g 30ms ***) 3 bumps / direction, 18 bumps in total iec 60068-2-27, dc/dc converter not in operation; tests limits according to en 61373 altitude 0 to 2000m (0 to 6 560ft) without any restrictions 2000 to 6000m (6 560 to 20 000ft) reduce output power or ambient temperature, see fig. 15-2 iec 62477-1, overvoltage category ii altitude de-rating 12w/1000m or 5c/1000m > 2000m (6500ft), see fig. 15-2 over-voltage category iii iec 62477- 1, altitudes up to 2000m ii for altitudes from 2000m to 6000m degree of pollution 2 iec 62477-1, not conductive labs compatibility the unit does not re lease any silicone or other labs-criti cal substances and is suitable for use in paint shops. *) operational temperature is the same as the ambient temperature and is defined as the air temperature 2cm below the unit. **) do not energize while condensation is present ***) tested in combination with din-rails according to en 60715 with a height of 15mm and a thickness of 1.3mm and standard orientation. fig. 16-1 output current vs. ambient temp. at 24v output voltage fig. 16-2 output current vs. altitude at 24v output voltage allowed output current 0 -40 0 20 40 85c 2 4 6 8 8.3a 10a 60 -20 70 a b ambient temperature a... continuous b... for maximal 10 minutes 0 0 2000m 4000m 6000m 2 4 6 8 10a 8.3a allowable output current altitude b c a . . . t a m b < 7 0 c b . . . t a m b < 6 0 c c . . . t a m b < 5 0 c a may 2017 / rev. 0.1 ds-qs10.241-60-en preliminary all parameters are typical values specified at 24v, 8.3a output, 110vdc input, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone +49 89 9278 0 germany 14/27 cp10.241-60 cp-series 24v, 200w, dc/dc c onverter p r e l i m i n a r y 17. p rotection f eatures output protection electronically protected against overload , no-load and short-circuits *) output over-voltage pr otection typ. 30.5vdc max. 32vdc in case of an internal dc/dc converter defect, a redundant circuit limits the maximum output voltage. the output shuts down and automatically attempts to restart. degree of protection ip 20 en/iec 60529 penetration protection > 4mm e.g. screws, small parts over-temperature protection **) yes output shut-down with au tomatic restart, no signalling input transient protection mo v (metal oxide varistor) internal input fuse dc suitable fuse included not user replaceable reverse input polarity protection yes unit does not start, no signalling *) in case of a protection event, audible noise may occur. **) the temperature sensor is installed close to critical components inside the unit and turns the unit off in safety critical situations (e.g. customer does not care about de-rating requirements, ambien t temperature too high, obstructs the airflow or install the unit in unsuitable mounting orientation) there is no correlation between the operating temperature and turn-off temperature since this is dependent on input voltage, lo ad and installation methods. 18. s afety f eatures classification of output voltage selv iec/en 60950-1 pelv iec/en 60204-1 double or reinforced isolation to the input voltage class of protection i pe (protect ive earth) connection required isolation resistance > 500mohm at delivered conditi on between input and output, measured with 500vdc > 500mohm at delivered condi tion between input and pe, measured with 500vdc > 500mohm at delivered condi tion between output and pe, measured with 500vdc > 500mohm at delivered conditi on between output and dc-ok contacts, measured with 500vdc pe resistance < 0.1ohm resistance between pe terminal and the housing in the area of the din-rail mounting bracket. touch current (leakage current) the leakage current which is produced by th e dc/dc converter itself depends on the input voltage ripple and need to be in vestigated in the final application. for a smooth dc input voltage, the pro duced leakage current is less than 100a. may 2017 / rev. 0.1 ds-qs10.241-60-en preliminary all parameters are typical values specified at 24v, 8.3a output, 110vdc input, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone +49 89 9278 0 germany 15/27 cp10.241-60 cp-series 24v, 200w, dc/dc c onverter p r e l i m i n a r y 19. d ielectric s trength the output voltage is floating and has no ohmic connection to the ground. type and factory tests are conducted by the manufacturer. field tests may be c onducted in the field using the appropr iate test equipment which applies the voltage with a slow ramp (2s up and 2s down). connect all input-terminals togeth er as well as all ou tput poles before conducting the test. when testing, set the cut-off current settings to the value in the table below. fig. 19-1 dielectric strength a b c d type test 60s 2500vac 3000vac 500vac 500vac factory test 5s 2500vac 2500vac 500vac 500vac field test 5s 2000vac 2000vac 500vac 500vac cut-off current setting > 15ma > 15ma > 50ma > 5ma ad c b b *) - + input dc-ok earth, pe output - + to fulfil the pelv requirements acco rding to en 60204-1 6.4.1, we recommend that either the + pole, the C pole or any other part of the output circuit shall be conne cted to the protective earth system. this helps to avoid si tuations in which a load starts unexpectedly or can not be swit ched off when unnoticed earth faults occur. b*) when testing input to dc-ok ensure that the maximum voltage between dc-ok and the output is not exceeded (column d). we recommend connecting dc-ok pins and the output pins together when performing the test. may 2017 / rev. 0.1 ds-qs10.241-60-en preliminary all parameters are typical values specified at 24v, 8.3a output, 110vdc input, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone +49 89 9278 0 germany 16/27 cp10.241-60 cp-series 24v, 200w, dc/dc c onverter p r e l i m i n a r y 20. a pprovals and d eclarations ec declaration of conformity planned the ce mark indicates conformance with the - emc directive and the - low-voltage directive iec 60950-1 2 nd edition planned cb scheme, information technology equipment ul 508 planned ind. cont. e q. listed for use as industri al control equipment; u.s.a. (ul 508) and canada (c22.2 no. 107-1-01); e-file: e198865 ul 60950-1 2 nd edition planned recognized for use as information technology equipment, level 5; u.s.a. (ul 60950-1) and canada (c22.2 no. 60950-1); e-file: e137006 applicable for altitudes up to 2000m. railway applications - electronic equipment used on rolling stock. en 50155:2007 planned the manufacturers declaration indicate conformance with the following characteristics: - altitude category: ax (en 50125-1 4.2.1) - environmental category: tx (en 50155 4.1.2) - interruption of voltage supply: s2 (en 50155 5.1.1.2) - supply change over: c2 (en 50155 5.1.3) - shock and vibration: category 1, class a and b (en 61373) - emi: en 50121-3-2 - fire classification: hl3 (en 45545-2) eac tr registration registration for the eurasian customs union market (russia, kazakhstan, belarus) 21. r o hs, reach and o ther f ulfilled s tandards rohs directive directive 2011/65/eu of the european parliament and the council of june 8 th , 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment. reach directive directive 1907/2006/eu of the european parliament and the council of june 1 st , 2007 regarding the registration, evaluation, authorisation a nd restriction of chemicals (reach) may 2017 / rev. 0.1 ds-qs10.241-60-en preliminary all parameters are typical values specified at 24v, 8.3a output, 110vdc input, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone +49 89 9278 0 germany 17/27 cp10.241-60 cp-series 24v, 200w, dc/dc c onverter p r e l i m i n a r y 22. p hysical d imensions and w eight width 39mm 1.54 height 124mm 4.88 depth 117mm 4.61 the din-rail height must be added to the unit depth to calculate the total required installation depth. weight 620g / 1.37lb din-rail use 35mm din-rails according to en 60715 or en 50022 with a height of 7.5 or 15mm. housing material body: aluminium alloy cover: zinc-plated steel installation clearances see chapter 2 fig. 22-1 front view fig. 22-2 side view may 2017 / rev. 0.1 ds-qs10.241-60-en preliminary all parameters are typical values specified at 24v, 8.3a output, 110vdc input, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone +49 89 9278 0 germany 18/27 cp10.241-60 cp-series 24v, 200w, dc/dc c onverter p r e l i m i n a r y 23. a ccessories 23.1. zm12.side - s ide m ounting b racket this bracket is used to mount the power suppl y sideways with or without utilizing a din-rail. the two aluminum brackets and the bl ack plastic slider of the unit have to be detached, so that the steel brackets can be mounted. for sideway din-rail mounting, the re moved aluminum brackets and the bl ack plastic slider need to be mounted on the steel bracket. fig. 23-1 side mounting without din- rail brackets fig. 23-2 side mounting with din-rail brackets fig. 23-3 mounting dimensions side mounting bracket note: the isometric picture shows a unit with screw terminals note: the isometric picture shows a unit with screw terminals may 2017 / rev. 0.1 ds-qs10.241-60-en preliminary all parameters are typical values specified at 24v, 8.3a output, 110vdc input, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone +49 89 9278 0 germany 19/27 cp10.241-60 cp-series 24v, 200w, dc/dc c onverter p r e l i m i n a r y 23.2. zm4.wall C w all /p anel m ount b racket this bracket is used to mount the devices on a wall/panel without utilizing a din-rail. the bracket can be mounted without detaching the din-rail brackets. fig. 23-4 isometric view fig. 23-5 isometric view fig. 23-6 isometric view fig. 23-7 wall/panel mounting, front view fig. 23-8 hole pattern for wall mounting fig. 23-9 wall/panel mounting, side view note: the picture shows a unit with screw terminals note: the picture shows a unit with screw terminals may 2017 / rev. 0.1 ds-qs10.241-60-en preliminary all parameters are typical values specified at 24v, 8.3a output, 110vdc input, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone +49 89 9278 0 germany 20/27 cp10.241-60 cp-series 24v, 200w, dc/dc c onverter p r e l i m i n a r y 23.3. uf20.241 b uffer m odule this buffer unit is a supplementary device for dc 24v power supplies. it delivers power to bridge typi cal mains failures or extends the hold-up time after turn-off of the input power. in times when the power supply provides sufficient voltag es, the buffer unit stores energy in integrated electroly tic capacitors. in case of input voltage fault, this ener gy is released again in a regulated process. one buf fer module can deliver 20a additional current. dc buffer unit(s) power supply load ac + - the buffer unit does not require an y control wiring. it can be a dded in parallel to the load circuit at any given point. buffer units can be added in pa rallel to increase the output ampacity or the hold-up time. 23.4. yr20.242 - r edundancy m odule the yr20.242 is equipped with two input channels, which are indivi dually decoupled by utilizing mosfet technology. using mosfetss instead of diodes reduces the h eat generation and the voltage drop between input and output. the yr20.242 does not requi re an additional auxiliary voltage and is self-powered even in ca se of a short circuit across the output. due to the low power losses, the unit is very sl ender and only requires 32mm width on the din-rail. the yr20.242 can be used for n+1 and 1+1 redundancy systems. further information and wiring configur ations can be found in chapter 24.7 . 23.5. yr20.246 - r edundancy m odule with a utomated l oad s haring the yr20.246 is equipped with two input channels, which are indivi dually decoupled by utilizing mosfet technology. using mosfetss instead of diodes reduces the h eat generation and the voltage drop between input and output. the yr20.246 does not requi re an additional auxiliary voltage and is self-powered even in ca se of a short circuit across the output. 21/27 due to the low power losses, the unit is very sl ender and only requires 32mm width on the din-rail. the yr20.246 is optimized fo r 1+1 redundancy systems. compared to the yr20.242, the yr20. 246 is featured with an automa ted load sharing between the connected power supplies. the yr20.246 monitors the f unction of the redundancy circuitry and provides a signal in case of too high of output current, whic h could prevent redundancy, if one power supply fails. further information and wiring configur ations can be found in chapter 24.7 . may 2017 / rev. 0.1 ds-qs10.241-60-en preliminary all parameters are typical values specified at 24v, 8.3a output, 110vdc input, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone +49 89 9278 0 germany cp10.241-60 cp-series 24v, 200w, dc/dc c onverter p r e l i m i n a r y 24. a pplication n otes 24.1. p eak c urrent c apability the unit can deliver peak currents (up to several milliseconds) which are higher than the sp ecified short term currents. this helps to start current demanding loads. solenoids, contactors and pneumatic modules often have a steady state coil and a pick-up coil. the inrush current demand of the pick-up coil is several times higher than the steady-state current and usually exceeds the nominal output current. the same situation applies when sta rting a capacitive load. the peak current capability also ensures the safe operati on of subsequent circuit breakers of load circ uits. the load branches are often individually protected with circuit breakers or fuses. in ca se of a short or an overload in one branch circuit, the fuse or circuit breaker need a certain amount of over-current to open in a timely manner. this avoids voltage loss in adjacent circuits. the extra current (peak current) is supplie d by the power converter and the built -in large sized output capacitors of the power supply. the capacito rs get discharged during such an event, which causes a vo ltage dip on the output. the following examples show typical voltage dips: fig. 24-1 peak load with 2x the nominal current for 50ms, typ. fig. 24-2 peak load with 5x the nominal current for 5ms, typ. output voltage 10ms/div output current 24v 0a 16.6a 15.5v 1ms/div output voltage output current 24v 0a 41.5a 15.5v 16.6a peak load (resistive) for 50ms output voltage dips from 24v to 15.5v. 41.5a peak load (resistive) for 5ms output voltage dips from 24v to 15.5v. fig. 24-3 25a peak load, typ. 10ms/div output voltage output current 24v 0a 14ms 30a 10v please note: the dc-ok relay triggers when the voltage dips more than 10% for longer than 1ms. high overload current (typ. 25a for 12ms) enables easy fuse tripping peak current voltage dips typically from 24v to 15.5v at 16.6a for 50ms, resistive load typically from 24v to 17v at 41.5a for 2ms, resistive load typically from 24v to 15.5v at 41.5a for 5ms, resistive load may 2017 / rev. 0.1 ds-qs10.241-60-en preliminary all parameters are typical values specified at 24v, 8.3a output, 110vdc input, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone +49 89 9278 0 germany 22/27 cp10.241-60 cp-series 24v, 200w, dc/dc c onverter p r e l i m i n a r y 24.2. i nductive and c apacitive l oads the unit is designed to supply any kind of loads, including capacitive and inductive loads. if extreme large capacitors, such as edlcs (electric double layer capa citors or ultracaps) with a capacitanc e larger than 1.25f are connected to the output, the unit might charge the capacitor in the hiccup plus mode (see chapter 6 ). 24.3. e xternal i nput p rotection the unit is tested and approved for bran ch circuits up to 20a. an external pr otection is only required if the supplying branch has an ampacity greater than this. check also local codes and local requirements. in so me countries local regulations might apply. if an external fuse is necessary or utilized, minimum requirements need to be considered to avoid nuisance tripping of the circuit breaker. a mi nimum value of 6a b- or 4a c-characteristic breaker should be used. 24.4. c harging of b atteries the dc/dc converter can be used to ch arge lead-acid or maintena nce free batteries. (two 12v batteries in series) instructions for charging batteries: a) set output voltage (measured at no load and at the battery end of the cable) very precisely to the end-of-charge voltage. end-of-charge voltage 27. 8v 27.5v 27.15v 26.8v battery temperature 10c 20c 30c 40c b) use a 15a or 16a circuit breaker (or blocking di ode) between the dc/dc c onverter and the battery. c) ensure that the output current of th e dc/dc converter is below the allowed charging current of the battery. d) use only matched batteries when putting 12v types in series. e) the return current to the power supply (battery discharge current) is typ. 3ma when the power supply is switched off (except in case a bloc king diode is utilized). may 2017 / rev. 0.1 ds-qs10.241-60-en preliminary all parameters are typical values specified at 24v, 8.3a output, 110vdc input, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone +49 89 9278 0 germany 23/27 cp10.241-60 cp-series 24v, 200w, dc/dc c onverter p r e l i m i n a r y 24.5. s eries o peration dc/dc converters of the same type can be connected in series for higher output vo ltages. it is possible to connect as many units in series as needed, providing the sum of th e output voltage does not exceed 150vdc. voltages with a potential above 60vdc are not selv any more and can be da ngerous. such voltages must be installed with a protection against touching. avoid return voltage (e.g. from a de celerating motor or battery) which is applied to the output terminals. fig. 24-4 parallel use to increase the output power instructions for series use: unit a input output unit b - + - + load + - input output - keep an installation clearance of 15mm (left / right) between two dc/dc converters and avoid installing the dc/dc converters on top of each other. - do not use dc/dc converte rs in series in mounting orientations other than the standard mounti ng orientation (input terminals on bottom of the unit). - pay attention that emi and inrush current will increase when using multiple dc/dc converters. 24.6. p arallel u se to i ncrease o utput p ower dc/dc converters can be para lleled to increase the output power. the output voltage shall be adjusted to the same value (100mv) with the same load condi tions on all units, or the units can be left with the factory settings. the ambient temperature is not allowed to exceed +60c. if more than three units are connected in parallel, a fuse or circui t breaker with a rating of 15a or 16a is required on each output. alternatively, a diode or redundancy module can also be utilized. fig. 24-5 parallel use to increase the output power instructions for parallel use: unit a unit b - + - + load + - input output input output - keep an installation clearance of 15mm (left / right) between two dc/dc converters and avoid installing the dc/dc converters on top of each other. - do not parallel dc/dc conve rters in orient ations other than the standard mounting orientation (input terminals on bottom of the unit) or in any other condition where a derating of the output current is required (e.g. altitude, temperature, input voltages). - pay attention that emi and inrush current will increase when using multiple dc/dc converters. may 2017 / rev. 0.1 ds-qs10.241-60-en preliminary all parameters are typical values specified at 24v, 8.3a output, 110vdc input, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone +49 89 9278 0 germany 24/27 cp10.241-60 cp-series 24v, 200w, dc/dc c onverter p r e l i m i n a r y 24.7. p arallel u se for r edundancy dc/dc converters can be para lleled for redundancy to gain higher system availability. redundant systems require a certain amount of extra power to support the load in case one dc/dc converter unit fails. the simplest way is to put two dc/dc converters in para llel. this is called a 1+1 redunda ncy. in case one dc/dc conv erter unit fails, the other one is automatically able to su pport the load current withou t any interruption. redundant systems for a higher power demand are usually built in a n+1 method. e.g. five power supplies, each rated fo r 8.3a are paralleled to build a 33.2a redundant system. for n+1 redundancy the same restrict ions apply as for increasing the output power, see also section 0 . please note: this simple way to build a redundant system does not cover failures such as an internal short circuit in the secondary side of the dc/dc converter. in such a ca se, the defective unit becomes a load for the other power supplies and the output voltage can not be maintained any more. this can be avoided by using redundancy modules. recommendations for building redundant power systems: - use separate input fuses for each dc/dc converter. - monitor the individual dc/dc conve rter units. use the dc-ok relay cont act of the cp10 dc/dc converter. - it is desirable to set the output voltag es of all units to the same value ( 100m v) or leave it at the factory setting. fig. 24-6 redundant power design utilizing the yr20.242 redundancy module fig. 24-7 redundant power design utilizing the yr20.246 redundancy module with automated load sharing + - pe max. 8.3a load failure monitor i yr20.242 redundancy module output input 1 input 2 + + - - + - optional dc/dc converter 24v, 8.3a dc- ok ++ -- pe output input o o + - i dc/dc converter 24v, 8.3a dc- ok ++ -- pe output input o o + - max. 8.3a load load share warning i optional dc/dc converter 24v, 8.3a ++ -- lnpe output input dc- ok o o i yr20.246 redundancy module output 1 input 2 input + + - - + - load share ok o o redudnadcy ok o o failure monitor dc/dc converter 24v, 8.3a ++ -- lnpe output input dc- ok o o + - pe may 2017 / rev. 0.1 ds-qs10.241-60-en preliminary all parameters are typical values specified at 24v, 8.3a output, 110vdc input, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone +49 89 9278 0 germany 25/27 cp10.241-60 cp-series 24v, 200w, dc/dc c onverter p r e l i m i n a r y 24.8. b ack - feeding l oads loads such as decelerating motors and in ductors can feed voltage back to the dc /dc converter. this feature is also called return voltage immunity or resistance against back- e.m.f. ( e lectro m agnetic f orce). this dc/dc converter is resistant and does not show malfunctioning when a lo ad feeds back voltage to the dc/dc converter. it does not matter whether the dc/dc converter is on or off. the maximum allowed feed-back-voltage is 35vdc. the maximum allowed f eed-back-voltage is 35vdc. the maximum allowed feed-back peak current is 40a. higher currents can temporarily shut-dow n the output voltage. the absorbing energy can be calculated according to the built-in larg e sized output capacitor whic h is specified in chapter 6 . 24.9. u se in a t ightly s ealed e nclosure when the dc/dc converter is installed in a tightly sealed enclosure, the temp erature inside the enclosure will be higher than outside. in such situati ons, the inside temperature defines th e ambient temperature for the dc/dc converter. the following measurement results can be used as a reference to estimate the temperature rise inside the enclosure. the dc/dc converter is placed in th e middle of the box, no other heat producing items are inside the box test 1: 80% load enclosure: rittal typ ip66 box pk 9519 100, plastic, 180x180x165mm load: 24v, 6.6a; (=80%) load is placed outside the box input: 110vdc temperature inside enclosure: 46.3c (i n the middle of the right side of the dc /dc converter with a distance of 2cm) temperature outside enclosure: 27.8c temperature rise: 18.5k test 2: 100% load enclosure: rittal typ ip66 box pk 9519 100, plastic, 180x180x165mm load: 24v, 8.3a; (=100%) lo ad is placed outside the box input: 110vdc temperature inside enclosure: 49.7c (i n the middle of the right side of the dc /dc converter with a distance of 2cm) temperature outside enclosure: 28.1c temperature rise: 21.6k may 2017 / rev. 0.1 ds-qs10.241-60-en preliminary all parameters are typical values specified at 24v, 8.3a output, 110vdc input, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone +49 89 9278 0 germany 26/27 cp10.241-60 cp-series 24v, 200w, dc/dc c onverter may 2017 / rev. 0.1 ds-qs10.241-60-en preliminary all parameters are typical values specified at 24v, 8.3a output, 110vdc input, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone +49 89 9278 0 germany p r e l i m i n a r y 24.10. m ounting o rientations mounting orientations ot her than all terminals on the bottom require a reduction in continuous output power or a limitation in the maximum allowed ambien t temperature. the amount of reduction influences the lifetime expectancy of the dc/dc converter. therefore, tw o different derating curves for cont inuous operation can be found below: curve a1 recommended output current. curve a2 max allowed output current (res ults in approximately half the lifetime expectancy of a1). fig. 24-8 mounting orientation a (standard orientation) dc/dc converter output input output current 0 20 30 40 50 70c 2 4 6 8a 60 a 1 ambient temperature 8.3a fig. 24-9 mounting orientation b (upside down) dc/dc converter output input output current 0 20 30 40 50 70c 2 4 6 8a 60 a 2 ambient temperature a 1 8.3a fig. 24-10 mounting orientation c (table-top mounting) output current 0 20 30 40 50 70c 2 4 6 8a 60 ambient temperature a 1 a 2 8.3a fig. 24-11 mounting orientation d (horizontal cw) dc/dc converter output input output current 0 20 30 40 50 70c 2 4 6 8a 60 ambient temperature a 1 a 2 8.3a fig. 24-12 mounting orientation e (horizontal ccw) dc/dc converter output input output current 0 20 30 40 50 70c 2 4 6 8a 60 ambient temperature a 1 a 2 8.3a 27/27 |
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