wall industries, inc. 5 watson brook road exeter, nh 03833 02/24/2010 603-778-2300 www.wallindustries.com fax 603-778-9797 page 1 of 6 dmw ultra wide series single and dual output 4:1 ultra wide input voltage range up to 15.3 watts dc/dc converters rev c features 1500vdc isolation 4:1 ultra wide input range six-sided shielding ul 94v-0 package material efficiency up to 86% ul60950-1 safety approval mtbf > 700,000 hours complies with en55022 class a internal smt construction positive remote on/off control (optional) description the dmw series of dc/dc converters provide up to 15 watts in a 2 x 1 x 0.4 inch package. these converters operate over 4:1 wide input voltage ranges of 9-36vdc and 18-75vdc. this series also has single and dual output models available. these converters feature efficiency up to 86%, posi tive remote on/off (optional), six-sided shielding, 1500vdc isolation, and short circuit protection. this series is ideal for data communication equipment, mo bile battery driven equipment, process/machine control equipment, telecommunication equipment, co mputer peripheral systems, distributed power systems, mixed a nalog/digital subsystems, and industrial robot systems. the en55022 class a conducted noise compliance minimizes design time, cost, and eliminates the need f or external filter components. specifications: dmw ultra wide series all specifications are based on 25c, nominal input volt age, and maximum output current unless otherwise noted. we reserve the right to change specifications based on technological advances. specification test conditions min nom max unit input (v in ) 24v nominal input models 9 24 36 vdc operating voltage range 48v nominal input models 18 48 75 vdc 24v nominal input models 8 8.5 9 vdc start voltage 48v nominal input models 15 17 18 vdc 24v nominal input models 7 8 8.5 vdc under voltage shutdown 48v nominal input models 13 15 17 vdc reverse polarity input current 1 a short circuit input power 3500 mw 24v nominal input models -0.7 50 vdc input surge voltage (1000ms) 48v nominal input models -0.7 100 vdc input filter pi filter output (v o ) output voltage range see table output voltage accuracy 1.0 2.0 % output voltage balance dual output, balanced loads 0.5 2.0 % load regulation io = 10% to 100% 0.5 1.0 % line regulation vin = min. to max. 0.1 0.5 % output power 15 w output current range see table ripple & noise (peak to peak) 20mhz bandwidth 55 80 mv pk-pk ripple & noise (peak to peak) over line, load, and temperature 100 mv pk-pk ripple & noise 15 mvrms transient recovery time (see note 1) 25% load step change 300 500 s transient response deviation 25% load step change 2 4 % positive remote on/off (see note 5) supply on 2.5 to 5.5vdc or open circuit supply off -0.7 0.8 vdc standby input current 10 ma control input current (on) vin ? rc = 5.0v 50 ma control input current (off) vin ? rc = 0v -1 ma control common referenced to negative input protection over power protection 120 % short circuit protection continuous 24v nominal input models 2500ma slow-blow type input fuse recommendation 48v nominal input models 1250ma slow-blow type general efficiency see table switching frequency 290 330 400 khz isolation voltage rated 60 seconds 1500 vdc isolation voltage test flash test for 1 second 1650 vdc isolation resistance 500vdc 1000 m ? isolation capacitance 100khz, 1v 1200 1500 pf internal power dissipation 5,000 mw environmental operating temperature (ambient) -40 +60 c operating temperature (case) -40 +100 c storage temperature -50 +125 c lead temperature 1.5mm from case for 10 seconds 260 c humidity 95 % cooling free air convection rfi six-sided shielding, metal case temperature coefficient 0.01 0.02 %/c mtbf mil-hdbk-217f @ 25c, ground benign 700,000 hours conducted emi en55022 class a physical weight 1.13oz (32g) dimensions 2.0 x 1.0 x 0.4 inches (50.8 x 25.4 x 10.2 mm) case material metal with non-conductive baseplate flammability ul94v-0
wall industries, inc. 5 watson brook road exeter, nh 03833 02/24/2010 603-778-2300 www.wallindustries.com fax 603-778-9797 page 2 of 6 dmw ultra wide series single and dual output 4:1 ultra wide input voltage range up to 15.3 watts dc/dc converters rev c model selection table output current input current model number input voltage output voltage min max no load max load reflected ripple current output power efficiency (typ) max capacitive load dmw24s3.3-3000 3.3 vdc 300ma 3000ma 528ma 9.9w 78% 470 f dmw24s5-3000 5 vdc 300ma 3000ma 762ma 15w 82% 470 f dmw24s5.1-3000 5.1 vdc 300ma 3000ma 735ma 15.3w 81% 470 f dmw24s12-1250 12 vdc 125ma 1250ma 726ma 15w 85% 470 f DMW24S15-1000 15 vdc 100ma 1000ma 771ma 15w 86% 470 f dmw24d5-1500 5 vdc 150ma 1500ma 735ma 15w 81% 220 f dmw24d12-625 12 vdc 62.5ma 625ma 726ma 15w 85% 220 f dmw24d15-500 24 vdc (9 ~ 36 vdc) 15 vdc 50ma 500ma 25ma (typ) 787ma 40ma (typ) 15w 86% 220 f dmw48s3.3-3000 3.3 vdc 300ma 3000ma 26ma 9.9w 78% 470 f dmw48s5-3000 5 vdc 300ma 3000ma 381ma 15w 82% 470 f dmw48s5.1-3000 5.1 vdc 300ma 3000ma 368ma 15.3w 81% 470 f dmw48s12-1250 12 vdc 125ma 1250ma 363ma 15w 85% 470 f dmw48s15-1000 15 vdc 100ma 1000ma 386ma 15w 86% 470 f dmw48d5-1500 5 vdc 150ma 1500ma 368ma 15w 81% 220 f dmw48d12-625 12 vdc 62.5ma 625ma 363ma 15w 85% 220 f dmw48d15-500 48 vdc (18 ~ 75 vdc) 15 vdc 50ma 500ma 15ma (typ) 393ma 30ma (typ) 15w 86% 220 f notes 1. transient recovery time is measured to within 1% error band for a step change in output load of 75% to 100%. 2. the dmw series requires a minimum output load to maintain specified regulations. operati on under no-load condition will not damage these devices; however they may not meet all listed specifications. 3. all dc/dc converters should be externally fused at the front end for protection. 4. other input and output voltages may be available, please contact factory. 5. only positive control logic remote on /off is available. to order the converter with positive remote on/off add the suffix ? rc? to the part number. 6. to order the converter with en55022 class a f unction, please add the suffix ?a? to the part number. 7. to order the converter with a heatsink please add the suffix ?hs? to the part number. block diagrams single output dual output input voltage transient rating +vo -vo ref.amp isolation + vin lc filter -vin pwm filter +vo com. -vo isolation + vin lc -vin pwm ref.amp 130 125 120 115 110 105 100 80 75 70 65 60 55 50 45 40 10s 100s 1ms 10ms 100ms vin (vdc) ~ 24vdc input models 48vdc input models
wall industries, inc. 5 watson brook road exeter, nh 03833 02/24/2010 603-778-2300 www.wallindustries.com fax 603-778-9797 page 3 of 6 dmw ultra wide series single and dual output 4:1 ultra wide input voltage range up to 15.3 watts dc/dc converters rev c efficiency vs input voltage (single output) efficiency vs input voltage (dual output) efficiency vs output load (single output) efficiency vs output load (dual output) derating curve without heatsink derating curve with heatsink low nom high efficiency (%) 100 90 80 70 60 50 input voltage (v) low nom high efficiency (%) 100 90 80 70 60 50 input voltage (v) 90 80 70 60 50 40 30 10 20 40 60 80 100 load current (%) efficiency (%) 60 50 40 40 60 10 20 80 100 efficiency (%) load current (%) 30 70 80 90 output power ( %) 400lfm 100lfm 200lfm n a t ura l convection 100 80 60 40 20 0 ~ -40 50 60 70 80 90 100 110 ambient temperature (c) 100 80 60 40 20 0 ~ -40 50 60 70 80 90 100 110 ambient temperature (c) 400 lf m 100lfm 200 lf m nat ura l convection output power ( %)
wall industries, inc. 5 watson brook road exeter, nh 03833 02/24/2010 603-778-2300 www.wallindustries.com fax 603-778-9797 page 4 of 6 dmw ultra wide series single and dual output 4:1 ultra wide input voltage range up to 15.3 watts dc/dc converters rev c mechanical drawing standard with heatsink unit: inches (mm) unit: inches (mm) *add the suffix ?rc? to the part number for remote on/off option the dmw series converter is encapsulated in a low thermal resistance molding compound that has excellent resistance/electrical characteristics over a wide temperature range or in high humidity environments. the enc apsulant and unit case are both rated to ul 94v-0 flammability specifications. leads are tin plated for improved solderability. pin connections pin single output dual output 1 +vin +vin 2 -vin -vin 3 +vout +vout 4 no pin common 5 -vout -vout 6 * positive remote on/off (optional) 1. tolerance: x.xx0.01 (x.x0.25) x.xxx0.005 (x.xx0.13) 2. pin: 0.002 (0.05) the advantages of adding a heatsink: 1. to help heat dissipation and increase the stability and reliability of dc/dc converters at high operating temperature atmosphere. 2. to upgrade the operating temperature of dc/dc converters, please refer to the derating curve. 0.402 (10.20) 0.14 (3.5) x 4 ?0.039 (?1.00) 2.00 (50.8) side 0.24 (6.0) 0.40 (10.2) 3 4 5 bot t om 1 2 6 0.200 ( 50.8 ) 0.40 ( 10.2 ) 1.00 ( 25.4 ) 0.402 (10.20) 0.1 (2.5) 0.800 (20.30) 0.60 (15.2) 0.91 (23.0) 1.22 (31.0) max heatsink thermal pad clamp converter 0.68 (17.2) max 1. tolerance: x.xx0.01 (x.x0.25) x.xxx0.005 (x.xx0.13) 2. pin: 0.002 (0.05) heatsink specifications heatsink material: aluminum finish: anodic treatment (black) weight: 0.07oz (2g)
wall industries, inc. 5 watson brook road exeter, nh 03833 02/24/2010 603-778-2300 www.wallindustries.com fax 603-778-9797 page 5 of 6 dmw ultra wide series single and dual output 4:1 ultra wide input voltage range up to 15.3 watts dc/dc converters rev c + dc power source - +vin +out dc / dc converter -vin -out + load cin design & feature considerations remote on/off positive logic remote on/off turns the module on during a logi c high voltage on the remote on/off pin, and off during a logic l ow. to turn the power module on and off, the user must supply a switch to control the voltage betw een the on/off terminal and the -vin terminal. the switch ca n be an open collector or equivalent. a logic low is -0.7v to 0.8v. a logic high is 2.5v to 5.5v. the maximum sink current at on/off terminal during a logic low is -1ma. the maximum allowable leakage current of the switch at on/off terminal (2.5 to 5.5v) is 50a. over current protection to provide protection in a fault (output overload) condition, the unit is equipped with internal current limiting circuitry and can endure current limiting for an unlimited duration. at the point of current-limit inception, t he unit shifts from voltage control to current control. the unit operates normally once the output current is brought back into its specified range. input source impedance the power module should be connected to a lo w ac-impedance input source. highly inductive source im pedances can affect the sta bility of the power module. in applications where power is s upplied over long lines and output loading is hi gh, it may be necessary to use a capaci tor at the input to ensure startup. a capacitor mounted close to the power module helps ensure stability of the unit, it is recommended to use a good qual ity low equivalent series resistance (esr < 1.0 ? at 100khz) capacitor of a 6.8 f for the 24v and 48v input devices. maximum capacitive load the dmw series has a limitation of maximum connected capacitanc e at the output. the power module may be operated in current lim iting mode during start-up, affecting the ramp-up and the startup time. for op timum performance we recommend 220f maximum capacitive load for d ual outputs and 470f capacitive load for single outputs. the maximum capacitance can be found in the model selection guide. test configurations input reflected-ripple current test setup input reflected-ripple current is measured with an inductor lin (4.7h) and cin (220f, esr < 1.0 ? at 100khz) to simulate source impedance. capacitor cin offsets possible battery impedance. current ripple is measured at the i nput terminals of the module. measurement bandwidth is 0-500 khz. peak-to-peak output noise measurement test use a cout 0.47f ceramic capacitor. scope measurement should be made by using a bnc socket; measurement bandwidth is 0-20 mhz. position the load between 50 mm and 75 mm from the dc/dc converter. to oscilloscope + + lin battery cin +vin +out dc / dc converter -vin -out current probe load scope +vin +out dual output dc / dc com. converter -vin -out copper strip scope cout cout resistive load copper strip copper strip +vin +out single output dc / dc converter -vin -out copper strip cout copper strip scope resistive load
wall industries, inc. 5 watson brook road exeter, nh 03833 02/24/2010 603-778-2300 www.wallindustries.com fax 603-778-9797 page 6 of 6 dmw ultra wide series single and dual output 4:1 ultra wide input voltage range up to 15.3 watts dc/dc converters rev c probe and thermocouple position of air velocity 50mm / 2in air flow 15mm / 0.6in dut output ripple reduction a good quality low esr capacitor placed as cl ose as possible across the load will give the best ripple and noise performance. to reduce output ripple, it is recommended to use 4.7f capacitors at the output. thermal considerations many conditions affect the thermal performance of the power module, such as orientation, airflow over the module, and board spa cing. to avoid exceeding the maximum temperature rating of the components inside the power module, the case temperature must be kept below 100c. the d erating curves are determined from measurements obtai ned in an experimental apparatus. company information: wall industries, inc. has created custom and modified units fo r over 40 years. our in-house research and development engineers will provide a solution that exceeds your performance requirements on time and on budget. our iso9001-2008 certification is just one example of our commitme nt to producing a high quality, well documented product for our customers. our past projects demonstrate our commitment to you, our custom er. wall industries, inc. has a reputation for working closely w ith its customers to ensure each solution meets or exceeds form, fit and function requirements. we will continue to provide ongoing support for your projec t above and beyond the design and production phases. gi ve us a call today to discuss your future projects. contact wall industries for further information: phone: ? (603)778-2300 toll free: ? (888)587-9255 fax: ? (603)778-9797 e-mail: sales@wallindustries.com web: www.wallindustries.com address: 5 watson brook rd. exeter, nh 03833 load load + dc power source - +vin +out dual output dc / dc com. converter -vin -out cout cout dc / dc load + dc power source - +vin +out single output converter -vin -out cout
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