wall industries, inc. 3 7 industrial drive exeter, nh 03833 603- 778- 2300 www.wallindustries.com fax 603 - 778- 9797 page 1 of 6 MDHU100 series 4000vac i/o isolation single and dual outputs 2 watt medical dc/dc converter rev b features low cost single and dual outputs rohs compliant mtbf > 2,000,000 hours efficiency up to 75% internal smt construction low leakage current operating temperature: - 25c to +60c 4000vac i/o isolation medical & industrial safety: ul60601 - 1 and ul60950-1 description the MDHU100 series power modules are 2w dc/dc converters that are specially designed to provide ultra - high levels of isolation (4000vac) in a miniature dip package. these converters operate over input voltage ranges of 4.5~5.5vdc, 10.8~13.2vdc, and 21.6~26.4vdc. this series also has single and dual output voltages of 5, 12, 15, 12, and 15vdc. these converters have both medical (ul60601 - 1) and industrial (ul60950- 1) safety approvals and are useful for a variety of appl ications including distributed power systems, mixed analog/digital subsystems, portable test equipment, local power networks, and battery - backed systems. specifications: MDHU100series all specifications are based on 25c, nominal input voltage, and maxi mum 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 ) input voltage range 5v nominal input models 4.5 5 5.5 vdc 12v nominal input models 10.8 12 13.2 24v nominal input models 21.6 24 26.4 reverse polarity input current all models 0.3 a input surge voltage (1000ms) 5v nominal input models - 0.7 9 vdc 12v nominal input models - 0.7 18 24v nominal input models - 0.7 30 input filter all models internal capacitor leakage current 240vac, 60hz 2 a output (v o ) output voltage see rating chart output voltage accuracy 2.0 4.0 % output voltage balance dual output, balanced loads 0.1 1.0 % load regulation io = 20% to 100% see rating chart line regulation vin = min. to max. 1.2 1.5 % output power 2 w output current range see rating chart ripple & noise (20mhz) 100 150 mv pk - pk ripple & noise (20mhz) over line, over load, and over temperature 200 mv pk - pk ripple & noise (20mhz) 15 mvrms protection short circuit protectio n 0.5 seconds max. input fuse recommendation 5v nominal input models 1000ma slow - blow type 12v nominal input models 500ma slow - blow type 24v nominal input models 200ma slow - blow type general efficiency see rating chart switching frequency 50 80 100 khz isolation voltage rated 60 seconds 4000 vac isolation voltage test flash test for 1 second 6000 vdc isolation resistance 500vdc 10 g environmental operating temperature (ambient) ambient - 25 +60 c operating temperature (case) case - 25 +90 c storage temperature - 40 +125 c lead temperature 1.5mm from case for 10 seconds 260 c humidity 95 % cooling fre e air convection temperature coefficient 0.01 0.02 %/c mtbf mil - hdbk - 217f @ 25c, ground benign 2000 khours physical weight 0.18oz (5.1g) dimensions (l x w x h) 0.94 x 0.54 x 0.34 inches 23.8 x 13.7 x 8.62 mm case material non - conductive b lack plastic flammability ul94v - 0 safety industrial approvals ul60950 - 1 medical approvals ul60601 - 1
wall industries, inc. 3 7 industrial drive exeter, nh 03833 603- 778- 2300 www.wallindustries.com fax 603 - 778- 9797 page 2 of 6 MDHU100 series 4000vac i/o isolation single and dual outputs 2 watt medical dc/dc converter rev b model selection guide single output models model number input voltage output voltage output current input current max. load regulation efficienc y (typ) maximum capacitive load min max no load max load mdhu505n2 5 vdc (4.5 ~ 5.5 vdc) 5 vdc 8ma 400ma 60ma 606ma 12% 66% 330 f mdhu512n2 12 vdc 3ma 165ma 600ma 10% 66% 330 f mdhu515n2 15 vdc 2.5ma 133ma 605ma 10% 66% 330 f mdhu1205n2 12 vdc (10.8 ~ 13.2 vdc) 5 vdc 8ma 400ma 30ma 253ma 12% 66% 330 f mdhu1212n2 12 vdc 3ma 165ma 250ma 10% 66% 330 f mdhu1215n2 15 vdc 2.5ma 133ma 252ma 10% 66% 330 f mdhu2405n2 24 vdc (21.6 ~ 26.4 vdc) 5 vdc 8ma 400ma 15ma 126ma 12% 66% 330 f mdhu2412n2 12 vdc 3ma 165ma 125ma 10% 66% 330 f mdhu2415n2 15 vdc 2.5ma 133ma 126ma 10% 66% 330 f dual output models model num ber input voltage output voltage output current input current max. load regulation efficiency (typ) maximum capacitive load min max no load max load mdhu512nd2 5 vdc (4.5 ~ 5.5 vdc) 12 vdc 1.5ma 83ma 60ma 553ma 10% 72% 100 f mdhu515nd2 15 vdc 1ma 66ma 542ma 10% 73% 100 f mdhu1212nd2 12 vdc (10.8 ~ 13.2 vdc) 12 vdc 1.5ma 83ma 30ma 224ma 10% 74% 100 f mdhu1215nd2 15 vdc 1ma 66ma 220ma 10% 75% 100 f mdhu2412nd2 24 vdc (21.6 ~ 26.4 vdc) 12 vdc 1.5ma 83ma 15ma 112ma 10% 74% 100 f mdhu2415nd2 15 vdc 1ma 66ma 110ma 10% 75% 100 f notes 1. the MDHU100 series requires a minimum output loading to maintain specified regulations. operation under no - load conditions will not damage these devices, however they may not me et all listed specifications. 2. all dc/dc converters should be externally fused at the front end for protection. 3. other input and output voltages may be available, please contact factory. *due to advances in technology, specifications are subject to change without notice. block diagrams single output dual output +vo bipolar push-pull inverter +vin -vin -vo +vo bipolar push-pull inverter +vin -vin com. -vo
wall industries, inc. 3 7 industrial drive exeter, nh 03833 603- 778- 2300 www.wallindustries.com fax 603 - 778- 9797 page 3 of 6 MDHU100 series 4000vac i/o isolation single and dual outputs 2 watt medical dc/dc converter rev b 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
wall industries, inc. 3 7 industrial drive exeter, nh 03833 603- 778- 2300 www.wallindustries.com fax 603 - 778- 9797 page 4 of 6 MDHU100 series 4000vac i/o isolation single and dual outputs 2 watt medical dc/dc converter rev b mechanical drawing unit: inches (mm) design & feature consideratons input source impedance the power module should be connected to a low ac - impedance input source. highly inductive source impedances can affect the stability of the power module. in applications where power is supplied over long li nes and output loading is high, it may be necessary to use a capacitor 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 quality low equivalent series resistan ce (esr < 1.0 at 100khz) capacitor of 2.2f for the 5v input models, a 1.0f for the 12v input models, and a 0.47f for the 24v input models. + +out -out +vin -vin dc / dc converter load dc power source + - cin +out -out +vin -vin load dc power source + - cout single output dc / dc converter 1. tolerance: x.x 0.25 [x.xx 0.01] x.x x 0. 13 [x.x x x 0. 005] 2. pin: 0.05 [0. 0 02] pin connections pin single output dual output 1 - vin - vin 7 nc nc 8 nc common 9 +vout +vout 10 - vout - vout 16 +vin +vin nc: no connection
wall industries, inc. 3 7 industrial drive exeter, nh 03833 603- 778- 2300 www.wallindustries.com fax 603 - 778- 9797 page 5 of 6 MDHU100 series 4000vac i/o isolation single and dual outputs 2 watt medical dc/dc converter rev b maximum capacitive load the mdhu 100 series has a limit of maximum connected capacitance at the output. the power module may be operated in current limiting mode during start - up, affecting the ramp - up and the startup time. for optimal performance we recommend 100f maximum capacitive lo ad for dual outputs and 330f 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 induct or lin (4.7h) and cin (220f, esr < 1.0 at 100khz) to simulate source impedance. +out -out +vin -vin dc / dc converter load battery + lin + cin to oscilloscope current probe capacitor cin offsets possible battery impedance. current ripple is measured at the input terminals of the module. measurement bandwidth is 0 ~ 500khz. 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 ~ 20mhz. position the load between 50mm and 75mm from the dc/dc converter. +out -out +vin -vin single output dc / dc converter resistive load scope copper strip cout +out -out +vin -vin dual output dc / dc converter resistive load scope copper strip cout com. scope cout output ripple reduction a good quality low esr capacitor placed as close as possible across the load will give the best ripple and noise performance. to reduce output ripple, it is recommended to use 3.3 f capacitors at the output. +out -out +vin -vin load dc power source + - cout single output dc / dc converter +out -out +vin -vin load dc power source + - cout com. dual output dc / dc converter copper strip copper strip copper strip
wall industries, inc. 3 7 industrial drive exeter, nh 03833 603- 778- 2300 www.wallindustries.com fax 603 - 778- 9797 page 6 of 6 MDHU100 series 4000vac i/o isolation single and dual outputs 2 watt medical dc/dc converter rev b thermal considerations many conditions affect the thermal performance of the power module, such as orientation, airflow over the module, and board spacing. to avoid exceeding the maximum temperature rating of the components inside the power module, the case temperature must be kept below 90c. the derating curves are determined from measurements obtained in an experimental apparatus. dut position of air velocity probe and thermocouple 50mm / 2in air flow 15mm / 0.6in company information: wall industries, inc. has created custom and modified units for over 40 years. our in - house research and development engineers will provide a solution that exceeds your performance requirements on time and on bu dget. our iso9001 - 2000 certification is just one example of our commitment to producing a high quality, well - documented product for our customers. our past projects demonstrate our commitment to you, our customer. wall industries, inc. has a reputation fo r working closely with its customers to ensure each solution meets or exceeds form, fit and function requirements. we will continue to provide ongoing support for your project above and beyond the design and production phases. give us a call today to disc uss 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
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