rev e lan k series 2~4 watts dc/dc converter single and dual output 1/9/2018 wall industries, inc. ? 37 industrial drive, exeter, nh 03833 ? tel: 603 - 778 - 2300 ? toll free: 888 - 597 - 9255 ? fax 603 - 778 - 9797 website: www.wallindustries.com ? e - mail: s ales@wallindustries.com page 1 of 7 size: 1.25in x 0.80in x 0.40in (31.8mm x 20.3mm x 10.2mm) options features ? input voltage ? output voltage ? single or dual ? ? ? ? ? ? ? ? ? ? ? ? ? ? mobile batt ery driven systems ? distributed power systems ? telecommunication equipment ? mixed analog/digital subsystems ? process/machine control equipment ? computer peripheral systems ? model selection table 2:1 input models model number input voltage range output voltage output current output power lank53.3w2 5vdc (4.5~9vdc) 3.3 vdc 600ma 2w lank505w3 5 vdc 500ma 2.5w lank51 2w3 12 vdc 250ma 3w lank515w3 15 vdc 200ma 3w lank505dw3 5 vdc 250ma 2.5w lank512dw3 12 vdc 125ma 3w lank515dw3 15 vdc 100ma 3w lank123.3w2 12vdc (9~18vdc) 3.3 vdc 600ma 2w lank1205w3 5 vdc 500ma 2.5w lank1212w3 12 vdc 250ma 3w lank121 5w3 15 vdc 200ma 3w LANK1205DW3 5 vdc 250ma 2.5w lank1212dw3 12 vdc 125ma 3w lank1215dw3 15 vdc 100ma 3w lank243.3w2 24vdc (18~36vdc) 3.3 vdc 600ma 2w lank2405w3 5 vdc 500ma 2.5w lank2412w3 12 vdc 250ma 3w lank2415w3 15 vdc 200ma 3w la nk2405dw3 5 vdc 250ma 2.5w lank2412dw3 12 vdc 125ma 3w lank2415dw3 15 vdc 100ma 3w lank483.3w2 48vdc (18~75vdc) 3.3 vdc 600ma 2w lank4805w3 5 vdc 500ma 2.5w lank4812w3 12 vdc 250ma 3w lank4815w3 15 vdc 200ma 3w lank4805dw3 5 vdc 250ma 2.5w lank4812dw3 12 vdc 125ma 3w lank4815dw3 15 vdc 100ma 3w
rev e lan k series 2~4 watts dc/dc converter single and dual output 1/9/2018 wall industries, inc. ? 37 industrial drive, exeter, nh 03833 ? tel: 603 - 778 - 2300 ? toll free: 888 - 597 - 9255 ? fax 603 - 778 - 9797 website: www.wallindustries.com ? e - mail: s ales@wallindustries.com page 2 of 7 model selection table 4:1 input models model number input voltage range output voltage output current output power lank243.3uw3 24vdc (9~36vdc) 3.3 vdc 900ma 3w lank2405uw3 5 vdc 660ma 3w lank2412uw4 12 vdc 333ma 4w lank2415uw4 15 vdc 267ma 4w lank2405duw3 5 vdc 300ma 3w lank2412duw4 12 vdc 167ma 4w lank2415duw4 15 vdc 133ma 4w lank483.3uw3 48vdc (18~75vdc) 3.3 vdc 900ma 3w lank4805uw3 5 vdc 660ma 3w lank4812uw4 12 vdc 333ma 4w lank4815uw4 15 vdc 267ma 4w lank4805duw3 5 vdc 300ma 3w lank4812duw4 12 vdc 167ma 4w lank4815duw4 15 vdc 133ma 4w specifications all specifications are based on 25c, nominal input voltage, and maximum output current unle ss 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 (2:1 input models) 5v input models 4.5 5 9 vdc 12v input models 9 12 18 24v input models 18 24 36 48v input models 36 48 75 input voltage range (4:1 input models) 24v input models 9 24 36 vdc 48v input models 18 48 75 input filter pi filter output specifications output voltage see table output voltage balance 0.5 2.0 % output voltage accuracy dual output, balanced loads 0.5 1.0 % line regulation vin=min. to max. 0.2 0.5 % load regulation io=10% to 100% 0.2 0.5 % output power see table output current see table ripple & noise (20mh z bandwidth) 1% mv pk - pk transient recover time 50% load step change 300 500 s transient response deviation 5% load step change 3 5 % temperature coefficient 0.01 0.02 %/ o c protection over power protection 120 % short circuit protection continuous environmental specifications operating ambient temperature - 25 +85 o c operating case temperature - 25 +90 oc storage temperature - 40 120 o c lead temperature 1.5mm from case for 10 seconds 260 o c humidity non - condensing 95 % rh cooling free air convection mtbf mil - hdbk - 217f @25 o c, ground benign 1,000,000 hours
rev e lan k series 2~4 watts dc/dc converter single and dual output 1/9/2018 wall industries, inc. ? 37 industrial drive, exeter, nh 03833 ? tel: 603 - 778 - 2300 ? toll free: 888 - 597 - 9255 ? fax 603 - 778 - 9797 website: www.wallindustries.com ? e - mail: s ales@wallindustries.com page 3 of 7 specifications all specifications are based on 25c, nominal input voltage, and maximum output current unless otherwise noted. we reserve the right to chan ge specifications based on technological advances. specification test conditions min typ max unit general specifications efficiency 80 % switching frequency 300 khz isolation voltage rated 60 seconds 1500 vdc isolation voltage test flash test ed for 1 second 1650 vdc isolation resistance 500vdc 1000 m notes (1) transient recov ery time is measured to within 1% error for a step change in output load of 50% to 100%. (2) the lan k series requires a 10% minimum load on the output to maintain specified regulation. operation under no - load conditions 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) due to advances in technology, specifications are subject to change without notice. derating curves 2:1 input voltage range derating curve
rev e lan k series 2~4 watts dc/dc converter single and dual output 1/9/2018 wall industries, inc. ? 37 industrial drive, exeter, nh 03833 ? tel: 603 - 778 - 2300 ? toll free: 888 - 597 - 9255 ? fax 603 - 778 - 9797 website: www.wallindustries.com ? e - mail: s ales@wallindustries.com page 4 of 7 efficiency graphs 2:1 input voltage range efficiency graphs efficiency vs input voltage (single output) efficiency vs input voltage (dual output) efficiency vs output load (single output) efficiency vs output load (dual output)
rev e lan k series 2~4 watts dc/dc converter single and dual output 1/9/2018 wall industries, inc. ? 37 industrial drive, exeter, nh 03833 ? tel: 603 - 778 - 2300 ? toll free: 888 - 597 - 9255 ? fax 603 - 778 - 9797 website: www.wallindustries.com ? e - mail: s ales@wallindustries.com page 5 of 7 mechanical drawing s pin single output dual output 2 - vin - vin 3 - vin - vin 9 no pin common 11 nc - vout 14 +vout +vout 16 - vout common 22 +vin +vin 23 +vin +vin 1. tolerance: x.xx 0.01 (x.x 0.25) x.xxx 0.005 (x.xx 0.13) 2. pin tolerance: 0.002 ( 0.05) design & feature considerations 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 applicat ions 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 close to the power module helps ensure stability of the unit, it is recommended to use a good quality low equivalent series resistance (esr <1.0 at 100 khz) capacitor of 8.2f for the 5v input devices, a 3.3f for the 12v input devices, and maximum capacitive load t he lan k series has a 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. for optimum performance we recommend 1000f maximum cap acitive load for dual outputs and 4000f capacitive load for single outputs. over current protection to provide protection in a fault (output over load) condition, the unit is equipped with internal current limiting circuitry and can endure c urrent limiting for an unlimited duration. at the point of current - limit inception, the shifts from voltage control to current control. the unit operates normally once the output current is brought back into its specific range.
rev e lan k series 2~4 watts dc/dc converter single and dual output 1/9/2018 wall industries, inc. ? 37 industrial drive, exeter, nh 03833 ? tel: 603 - 778 - 2300 ? toll free: 888 - 597 - 9255 ? fax 603 - 778 - 9797 website: www.wallindustries.com ? e - mail: s ales@wallindustries.com page 6 of 7 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 input terminals of the module. measurement bandwidth is 0 - 500 khz. +out -out +vin -vin dc / dc converter load battery + lin + cin to oscilloscope current probe peak -to - peak output n oise measurement test use cout 0.47f ceramic capacitor. scope measurement should be made by using 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 recommende d to use 3.3f 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 thermal considerations many conditions affect the thermal performance of the power module, such as orientation, airflow over th e module, and board spacing. to avoid exceeding the maximum temperature rating of the components inside the power module, the case temperature must be kep t below 90oc. the derating curves are determined from measurements obtained in an experimental apparat us. dut position of air velocity probe and thermocouple 50mm / 2in air flow 15mm / 0.6in
rev e lan k series 2~4 watts dc/dc converter single and dual output 1/9/2018 wall industries, inc. ? 37 industrial drive, exeter, nh 03833 ? tel: 603 - 778 - 2300 ? toll free: 888 - 597 - 9255 ? fax 603 - 778 - 9797 website: www.wallindustries.com ? e - mail: s ales@wallindustries.com page 7 of 7 company information wall industries, inc. has created custom and modified units for over 50 years. our in - house research and development engineers will provide a solution that exceeds your perf ormance requirements on - time and on budget. our iso9001 - 2008 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. wal l industries, inc. has a reputation for 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 discuss your future projects. contact wall industries for further information: phone: ? (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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