rev a dcwim20 series 20 watts dc/dc chassis & din - rail dc/dc power module single outputs 3/7/2017 wall industries, inc. ? 37 industrial drive, exeter, nh 03833 ? tel: 603 - 778 - 2 300 ? toll free: 888 - 597 - 9255 ? fax 603 - 778 - 9797 website: www.wallindustries.com ? e - mail: sales@wallindustries.com page 1 of 6 size: 3.78in x 2.13in x 0.92in (96mm x 54mm x 23.3mm) features ? ? ? ? ? ? ? ? ? model selection table model number (1) in put voltage range output voltage output current input current maximum capacitive load efficiency ripple & noise output power no load max. load dcwim20 - 24s51c 24vdc (9~36vdc) 5.1vdc 4000ma 70ma 944ma 6800 f 90% 100mvp - p 20w dcwim20 - 24s12c 12vdc 1670ma 918ma 1160 f 91% 150mvp - p dcwim20 - 24s24c 24vdc 835ma 918ma 300 f 91% 150mvp - p dcwim20 - 24s48c 48vdc 420ma 944ma 75 f 89% 200mvp - p dcwim20 - 48s51c 48vdc (18~75vdc) 5.1vdc 4000ma 35ma 472ma 6800 f 90% 100mvp - p 20w dcwim20 - 48s12c 12vdc 1670 ma 459ma 1160 f 91% 150mvp - p dcwim20 - 48s24c 24vdc 835ma 459ma 300 f 91% 150mvp - p dcwim20 - 48s48c 48vdc 420ma 472ma 75 f 89% 200mvp - p specifications all specifications are based on 25c, resistive load, nominal input voltage, and rated output cu rrent unless otherwise noted. we reserve the right to change specifications based on technological advances. specification test conditions min typ max unit input specifications input voltage range 24v input models 9 36 vdc 48v input models 18 75 s tart - up threshold voltage 24v input models 9 vdc 48v input models 18 under voltage shutdown 24v input models 7.5 vdc 48v input models 16 input surge voltage (100ms max.) 24v input models - 0.7 50 vdc 48v input models - 0.7 100 input fil ter all models internal pi type output specifications output voltage see table voltage accuracy 2.0 %vnom line regulation vin=min. to max. @full load 0.5 % load regulation io=0% to 100% 0.5 % output power see table output current see table minimum load no minimum load requirement maximum capacitive load see table ripple & nois e 20mhz bandwidth see table transient recovery time (2) 25% load step change 250 sec transient response deviation 25% load step change 3 5 % start - u p time power up nominal vin and constant resistive load 30 ms remote on/off 30 temperature coefficient 0.02 %/ o c
rev a dcwim20 series 20 watts dc/dc chassis & din - rail dc/dc power module single outputs 3/7/2017 wall industries, inc. ? 37 industrial drive, exeter, nh 03833 ? tel: 603 - 778 - 2 300 ? toll free: 888 - 597 - 9255 ? fax 603 - 778 - 9797 website: www.wallindustries.com ? e - mail: sales@wallindustries.com page 2 of 6 specifications all specifications are based on 25c, resistive load, nominal input voltage, and rated output current unless ot herwise noted. we reserve the right to change specifications based on technological advances. specification test conditions min typ max unit remote on/off control converter on 3.5v~12v or open circuit converter off 0v~1.2v or short circuit control i nput current (on) vctrl=5.0v 0.5 ma control input current (off) vctrl=0v - 0.5 ma control common referenced to negative input standby input current supply off & nominal vin 3 ma protection short circuit protection hiccup mode 0.25hz typ. automat ic recovery over load protection hiccup 150 % over voltage protection zener diode clamp 120 % of vo environmental specifications operating ambient temperature natural convection, nominal vin, load 100% inom. 12v & 24v output models - 40 +87 o c 5 .1v output models - 40 +86 48v output models - 40 +85 storage temperature - 50 +125 o c thermal impedance natural convection 3.9 o c/w 100lfm convection 3.3 200lfm convection 3.1 400lfm convection 2.5 humidity non - condensing 95 % rh case temperature +95 o c cooling (3) natural convection mtbf (calculated) mil - hdbk - 217f @25 o c, ground benign 775,200 hours general specifications efficiency @max load see table switching frequency 285 khz i/o isolation voltage 60 seconds 2 500 vdc isolation resistance 500vdc 1000 m notes 1. din rail mounting is available for this series. to indicate din rail bracket add ? d to model number. ex. dcwim20 - 24s51c - d 2. transient recovery time is measured to within 1% error band for a step change in output load of 75% to 100%. 3. natural convection is about 20lfm but is no t equal to still air (0 lfm) . 4. it is recommended to protect the converter by a slow blow fuse in the input supply line. 5. other input and output voltages may be available, please contact factory. * due to advances in technology, specifications subject to chang e without notice.
rev a dcwim20 series 20 watts dc/dc chassis & din - rail dc/dc power module single outputs 3/7/2017 wall industries, inc. ? 37 industrial drive, exeter, nh 03833 ? tel: 603 - 778 - 2 300 ? toll free: 888 - 597 - 9255 ? fax 603 - 778 - 9797 website: www.wallindustries.com ? e - mail: sales@wallindustries.com page 3 of 6 derating curves 12v & 24v output models 5.1v output models 48v output models e xternal filter external filter meets radiated emi en55022 class a; fcc part 15 level a model l1 c1 c2 c3 dcwim20 - 24sxx 120 h/120 h 4.7 f/50v none 220pf dcwim20 - 48sxx 120 h/120 h 3.3 f/100v 220pf 220pf
rev a dcwim20 series 20 watts dc/dc chassis & din - rail dc/dc power module single outputs 3/7/2017 wall industries, inc. ? 37 industrial drive, exeter, nh 03833 ? tel: 603 - 778 - 2 300 ? toll free: 888 - 597 - 9255 ? fax 603 - 778 - 9797 website: www.wallindustries.com ? e - mail: sales@wallindustries.com page 4 of 6 mechanical drawing s chassis mounting connections pin function 1 remote on/off 2 - vin 3 +vin 4 nc 5 - vout 6 nc 7 - vout 8 nc nc: no connection notes: all dimensions in mm (inches) tolerance: 0.5 (0.02) din rail mounting bracket ( - d suffix) mechanical dimensions din - rail mounting kit
rev a dcwim20 series 20 watts dc/dc chassis & din - rail dc/dc power module single outputs 3/7/2017 wall industries, inc. ? 37 industrial drive, exeter, nh 03833 ? tel: 603 - 778 - 2 300 ? toll free: 888 - 597 - 9255 ? fax 603 - 778 - 9797 website: www.wallindustries.com ? e - mail: sales@wallindustries.com page 5 of 6 test setup peak - t o - peak output noise measurement test 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. te chnical notes re mote on/off positive logic remote on/off turns the module on during a logic high voltage on the remote on/off pin, and off during a logic low. to turn the power module on and off, the user must supply a switch to control the voltage between the on/o ff terminal and the ? vin terminal . the switch can be an open collector or equivalent. a logic low is 0v to 1.2v. a logic high is 3.5v to 12v. the maximum sink current at the on/off terminal (pin 1) d uring a logic low is - 100 a. overload protection to provide hiccup mode protection in a fault (output overload) condition, the unit is equipped with internal current limiting circuitry and can endure overload for an unlimited duration. overvoltage pro tection the output overvoltage clamp consists of control circuitry, which is independent of the primary regulation loop that monitors the voltage on the output terminals. the control look of the clamp has a higher voltage set point than the primary loop. this provides a redundant voltage control that reduces the risk of output overvoltage. ovp can be found in data sheet. 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 lines and output loading is high, it may be necessary to use a capacitor at the input to ensure startup. capacitor mounted cl ose to the power module helps ensure stability of the unit, it is recommended to use a good quality low equivalent series resistor (esr <1.0 at 100khz) capacitor of a 10f for the 24v and 48v devices. output ripple reduction a good quality low esr capacitor placed as close as practicable across the load will give the best ripple and noise performan ce. to reduce output ripple it is recommended to use 4.7f capacitors at the output. maximum c apacitive load the dcwim20 series has limitation 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. the maximum capacitance can be fo und in datasheet. thermal considerations many conditions affect the thermal performance of the power module, such as orientation, airflow over the module, and board s pacing. to avoid exceeding the maximum temperature ratin g of the components inside the power module, the case temperature must be kept below 95oc. the derating curves are determined from measurements obtained in a test setup.
rev a dcwim20 series 20 watts dc/dc chassis & din - rail dc/dc power module single outputs 3/7/2017 wall industries, inc. ? 37 industrial drive, exeter, nh 03833 ? tel: 603 - 778 - 2 300 ? toll free: 888 - 597 - 9255 ? fax 603 - 778 - 9797 website: www.wallindustries.com ? e - mail: sales@wallindustries.com page 6 of 6 company information wall industries, inc. has created c ustom and modified units for over 50 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 commitment to pr oducing 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 for working closely with its customers to ensure each solution meets or exceeds fo rm, 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 discuss your future projects. contact wall industries for further information: pho ne: ? (603)778- 2300 toll free: ? (888)597 - 9255 fax: ? (603)778- 9797 e - mail: sales@wallindustries.com web: www.wallindustries.com address: 37 industrial drive exeter, nh 03833
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