board mountable dc-dc converters imo series edition 5/5.2000 1/7 table of contents page summary .......................................................................... 1 type survey and key data .............................................. 1 type key .......................................................................... 2 functional description ..................................................... 2 electrical input data ........................................................ 2 page electrical output data ...................................................... 3 immunity to environmental conditions ........................... 4 electromagnetic compatibility (emc) ............................. 4 mechanical data .............................................................. 5 safety and installation instructions ................................. 5 50.8 2.0" 25.4 1.0" 12 0.47" 6...12 watt dc-dc converters imo series input voltage range up to 4:1 input filter high efficiency up to 80% outputs short-circuit proof no derating 2" 1" metal case low cost with standard battery voltages. the imo converters fea- ture good efficiency and good dynamic response to load changes and at start-up. the imo modules are short-cir- cuit and no-load proof. summary the imo series of dc-dc converters have been devel- oped for powering commercial type of electronic circuits, e.g. telephone systems components, industrial controllers and small appliances. they are suitable for applications type survey and key data table 1: type survey output 1 output 2 output power input voltage efficiency type designation option u o nom i o nom u o nom i o nom t a = 71 c u i min ... u i max u i nom, i o nom [v] [ma] [v] [ma] p o nom [w] [v dc] h min [%] 3.3 1500 - - 5 10...36 63 24 imo 6-03-2 -7 3.3 1500 - - 5 18...72 63 48 imo 6-03-2 3.3 3000 - - 10 18...60 70 24 imo 12-03-2 3.3 3000 - - 10 35...75 70 48 imo 12-03-2 5 1000 - - 5 10...36 68 24 imo 6-05-2 5 1000 - - 5 18...72 70 48 imo 6-05-2 5 2400 - - 12 18...60 70 24 imo 12-05-2 5 2400 - - 12 35...75 70 48 imo 12-05-2 12 500 - - 6 10...36 73 24 imo 6-12-2 12 500 - - 6 18...72 75 48 imo 6-12-2 12 1000 - - 12 18...60 76 24 imo 12-12-2 12 1000 - - 12 35...75 76 48 imo 12-12-2 15 400 - - 6 10...36 73 24 imo 6-15-2 15 400 - - 6 18...72 76 48 imo 6-15-2 15 800 - - 12 18...60 80 24 imo 12-15-2 15 800 - - 12 35...75 80 48 imo 12-15-2 +5 500 ? 500 5 10...36 68 24 imo 6-0505-2 +5 500 ? 500 5 18...72 70 48 imo 6-0505-2 +12 250 ?2 250 6 10...36 72 24 imo 6-1212-2 +12 250 ?2 250 6 18...72 75 48 imo 6-1212-2 +12 500 ?2 500 12 18...60 80 24 imo 12-1212-2 +12 500 ?2 500 12 35...75 80 48 imo 12-1212-2 +15 200 ?5 200 6 10...36 73 24 imo 6-1515-2 +15 200 ?5 200 6 18...72 76 48 imo 6-1515-2 +15 400 ?5 400 12 18...60 80 24 imo 12-1515-2 +15 400 ?5 400 12 35...75 80 48 imo 12-1515-2 input voltage range up to 72 v dc 1 or 2 outputs up to 30 v dc 1500 v dc i/o electric strength test voltage
board mountable dc-dc converters imo series edition 5/5.2000 2/7 type key type key 24 imo 6 - 12 12 -2 nominal input voltage in volt .................................. 24...48 series .......................................................................... imo nominal output power in watt .................................... 6, 12 nominal output voltage for output 1 in volt ............ 03...15 nominal output voltage for output 2 in volt ............ 05...15 operational ambient temperature range t a standard: ?0...50 c ................................ -2 option: ?5...71 c ................................ -7 vi+ vo vi vo+ control shunt diode, filter com 03035 ref. vi+ vo vi vo+ ref. control shunt diode, filter 03034 fig. 2 dual output converter block diagram fig. 1 single output converter block diagram functional description electrical input data general condition: t a = 25 c unless otherwise specified table 2: input data input 24 imo 6 24 imo 12 48 imo 6 48 imo 12 characteristics conditions min typ max min typ max min typ max min typ max unit u i input voltage range t a min ... t a max 10 36 18 60 18 72 35 75 v dc u i nom nominal input voltage i o = 0... i o nom 24 24 48 48 u i input voltage without 0 75 0 65 0 75 0 80 damage i i 0 no load input current u i nom , i o = 0 25 8 12 8 ma i i l input current limitation u i nom , full load 1.5 p i nom 1.25 p i nom 1.5 p i nom 1.25 p i nom w response u i rev reverse input voltage u i = negative or shunt diode use external fuse protection reverse polarity
board mountable dc-dc converters imo series edition 5/5.2000 3/7 electrical output data general condition: t a = 25 c unless otherwise specified table 3a: output data for single output types output imo 6-03 imo 6-05 imo 6-12 imo 6-15 characteristics conditions min typ max min typ max min typ max min typ max unit u o output voltage u i nom , i o nom 3.24 3.36 4.90 5.10 11.76 12.24 14.70 15.30 v i o nom nominal output current u i min ... u i max 1500 1000 500 400 ma u o output voltage noise u i nom 100 150 100 150 100 150 100 150 mv pp i o nom (bw = 20 mhz) d u o u static line regulation u i min ... u i max 1 1 1 1% i o nom d u o i static load regulation u i nom 2 2 2 2 i o nom ...0 t r transient recovery time i o nom ? 1 / 2 500 500 500 500 s a uo temperature coefficient u i nom 0.02 0.02 0.02 0.02 %/k f s switching frequency i o nom 200 200 200 200 khz table 3b: output data for single output types output imo 12-03 imo 12-05 imo 12-12 imo 12-15 characteristics conditions min typ max min typ max min typ max min typ max unit u o output voltage u i nom , i o nom 3.24 3.36 4.90 5.10 11.76 12.24 14.70 15.30 v i o nom nominal output current u i min ... u i max 3000 2400 1000 800 ma u o output voltage noise u i nom 150 150 240 300 mv pp i o nom (bw = 20 mhz) d u o u static line regulation u i min ... u i max 1 1 1 1% i o nom d u o i static load regulation u i nom 2 2 2 2 i o nom ...0 t r transient recovery time i o nom ? 1 / 2 500 500 500 500 s a uo temperature coefficient u i nom 0.02 0.02 0.02 0.02 %/k f s switching frequency i o nom 200 200 200 200 khz table 3c: output data for dual output types output imo 6-0505 imo 6-1212 imo 6-1515 characteristics conditions min typ max min typ max min typ max unit u o output voltage u i nom , i o nom 4.90 5.10 11.76 12.24 14.70 15.30 v i o nom nominal output current u i min ... u i max 500 250 200 ma u o output voltage noise u i nom 100 150 100 150 100 150 mv pp i o nom (bw = 20 mhz) d u o u static line regulation u i min ... u i max 1 1 1% i o nom d u o i static load regulation u i nom 5 5 5 i o nom ...0 t r transient recovery time i o nom ? 1 / 2 500 500 500 s a uo temperature coefficient u i nom 0.02 0.02 0.02 %/k f s switching frequency i o nom 200 200 200 khz
board mountable dc-dc converters imo series edition 5/5.2000 4/7 connection in series the outputs of one or more units can be connected in se- ries. no suppressor diodes are required. power-one how- ever recommends to protect each individual output with a zener diode or preferably a suppressor diode, to avoid re- verse polarity that may occur if the output voltages do not rise simultaneously. thermal considerations if a converter is operated, the relationship between the ambient temperature t a and the case temperature t c de- pends heavily on the conditions of operation and integra- tion 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. the specified maximum ambi- ent temperature t a max is therefore only an indicative value and under practical operating conditions, the ambient tem- perature t a may be higher or lower than this value. caution: the case temperature t c measured at the measuring point of case temperature t c (see: mechani- cal 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 specifica- tions. connection in parallel the outputs of several units can be connected in parallel. however, the use of a single unit with a higher power rat- ing is a better choice because of uneven power distribu- tion among the outputs connected in parallel. it is recom- mended to select converters to be connected in parallel with very small output voltage differences at full load (i.e. < 1%). a decoupling diode is not required but recom- mended. table 3d: output data for dual output types output imo 12-1212 imo 6-1515 characteristics conditions min typ max min typ max unit u o output voltage u i nom , i o nom 11.76 12.24 14.70 15.30 v i o nom nominal output current u i min ... u i max 500 400 ma u o output voltage noise u i nom 240 300 mv pp i o nom (bw = 20 mhz) d u o u static line regulation u i min ... u i max 1 1% i o nom d u o i static load regulation u i nom 5 5 i o nom ...0 t r transient recovery time i o nom ? 1 / 2 500 500 s a uo temperature coefficient u i nom 0.02 0.02 %/k f s switching frequency i o nom 200 200 khz unit 1 unit 2 + u o u o vo+ com vo vo+ com vo 05090 fig. 3 outputs connected in series
board mountable dc-dc converters imo series edition 5/5.2000 5/7 immunity to environmental conditions table 5: temperature specifications, valid for air pressure of 800...1200 hpa (800...1200 mbar) temperature standard -2 option -7 characteristics conditions min max min max unit t a ambient temperature u i nom 10 50 25 71 c t c case temperature i o = 0... i o nom 25 80 25 80 t s storage temperature non operational 25 80 40 100 electromagnetic compatibility (emc) filter recommendations for compliance with cispr 22/en 55022, class b electromagnetic emission requirements according to en 55022, class b can be easely achieved by adding an ex- ternal input filter consisting of additional capacitors and a choke. the filter components should be placed as close as possi- ble to the input of the converter. fig. 5 input filter arrangement for 48 v dc types table 4: input filter components types c 1 c 2 type l 1 type c i type 24 imo 6 2.2 f2.2 f siemens 2.2 mh siemens 2.2 f siemens 100 v 100 v b 32522- b 82722- 100 v b 32522- c1225-k a2202-n1 c1225-k 48 imo 6 1 f 1 1 f 1 siemens 0.5 mh ticomel 100 v 100 v b 32522- so 17-0.63 c1105-k 500 24 imo 12 3.3 f3.3 f siemens 5.6 mh siemens 3.3 f siemens 50 v 50 v b 32529- b 82723 50 v b 32529- c5335-k a2202-n1 c5335-k 48 imo 12 2.2 f 1 2.2 f 1 siemens 2.2 mh siemens 1 f siemens 100 v 100 v b 32522- b 82722 100 v b 32522- c1225-k a2202-n1 c1105-k 1 only valid for input voltages up to 60 v dc. c 1 c 2 l 1 vi+ vi c i 07028 c 1 c 2 l 1 vi+ vi 07029 fig. 4 input filter arrangement for 24 and 40 v dc types
board mountable dc-dc converters imo series edition 5/5.2000 6/7 fig. 6 case 2" 1" weight: 50 g mechanical data dimensions in mm. tolerances 0.3 mm unless otherwise specified. european projection safety and installation instructions installation instruction installation of the dc-dc converters must strictly follow the national safety regulations in compliance with the en- closure, mounting, creepage, clearance, casualty, mark- ings and segregation requirements of the end-use appli- cation. connection to the system shall be made via a printed cir- cuit board according to: mechanical data . the units should be connected to a secondary circuit. check for hazardous voltages before altering any connec- tions. ensure that a unit failure (e.g. by an internal short-circuit) does not result in a hazardous condition. see also: safety of operator accessible output circuit. standards and approvals the units have been evaluated for: building in operational insulation input to output the use in a pollution degree 2 environment connecting the input to a secondary circuit which is subject to a maximum transient rating of 1500 v. input fuse to prevent excessive current flowing through the input supply line in case of a short-circuit across the converter input an external fuse should be installed in a non earthed input supply line. we recommend a fast acting fuse f1.6a for 24 imo 6 f0.8a for 48 imo 6 f3.15a for 24 imo 12 f1.6a for 48 imo 12 12 5 1 50.8 15.1 20.3 25.4 5 1 2 3 4 5 20.2 09112 isolation the electric strength test is performed as factory test in ac- cordance with iec/en 60950 and ul 1950 and should not be repeated in the field. power-one will not honour any guarantee claims resulting from electric strength field tests. table 7: electric strength test voltages, clearance and creepage distances characteristic input to output unit electric strength test voltage 1 s 1100 v rms 1500 v dc coupling capacitance imo 6 types 320 pf imo 12 types 2200 insulation resistance at 500 v dc >1000 m ? table 8: pin allocation pin single output units dual output units 1vi+ vi+ 2vi vi 3vo+ vo+ 4 no pin com 5vo vo cleaning agents in order to avoid possible damage, any penetration of cleaning fluids is to be prevented, since the power sup- plies are not hermetically sealed. protection degree the protection degree of the dc-dc converters is ip 40.
board mountable dc-dc converters imo series edition 5/5.2000 7/7 safety of operator accessible output circuit if the output circuit of a dc-dc converter is operator ac- cessible, it shall be an selv circuit according to iec/en 60950 related safety standards the following table shows some possible installation con- figurations, compliance with which causes the output cir- cuit of the dc-dc converter to be an selv circuit accord- ing to iec/en 60950 up to a configured output voltage (sum of nominal voltages if in series or +/ configuration) of 30 v. however, it is the sole responsibility of the installer to as- sure the compliance with the relevant and applicable safety regulations. more information is given in: technical information: safety . table 9: insulation concept leading to an selv output circuit conditions front end dc-dc converter result supply minimum required grade maximum minimum required safety measures to achieve the safety status of voltage of isolation, to be provided dc output status of the front end specified safety status of the the dc-dc by the ac-dc front end, voltage output circuit output circuit converter output including mains supplied from the circuit battery charger front end 1 mains basic 60 v earthed selv circuit 2 operational insulation, pro- selv circuit 250 v ac vided by the dc-dc converter elv circuit input fuse 3 output suppressor earthed selv >60 v hazardous voltage diodes 4 , and earthed circuit secondary circuit output circuit 2 double or reinforced 60 v selv circuit operational insulation, pro- selv circuit vided by the dc-dc converter >60 v tnv-2 circuit earthed output circuit 2 earthed selv double or reinforced insu- input fuse 3 and output selv circuit lated unearthed hazardous suppressor diodes 4 voltage secondary circuit 5 1 the front end output voltage should match the specified input voltage range of the dc-dc converter. 2 the earth connection has to be provided by the installer according to the relevant safety standard, e.g. iec/en 60950. 3 the installer shall provide an approved fuse (type with the lowest rating suitable for the application) in a non-earthed input conduc- tor directly at the input of the dc-dc converter (see fig.: schematic safety concept ). for ul s purpose, the fuse needs to be ul- listed. see also: input fuse . 4 each suppressor diode should be dimensioned in such a way, that in the case of an insulation fault the diode is able to limit t he output voltage to selv (<60 v) until the input fuse blows (see fig.: schematic safety concept ). 5 has to be insulated from earth by double or reinforced insulation according to the relevant safety standard, based on the maxim um output voltage from the front end. ac-dc front end dc-dc con- verter mains fuse battery earth connection suppressor diode selv earth connection + ~ ~ 10004 fig. 7 schematic safety concept. use fuse, suppressor diode and earth connection as per table safety concept leading to an selv output circuit .
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