wall industries, inc. 5 watson brook road exeter, nh 03833 603-778-2300 www.wallindustries.com fax 603-778-9797 cmdmw series 15 watt single outpu t chassis mount dc/dc converte r 4:1 ultra wide input voltage range rev. b features 1500vdc isolation six-sided shielding mtbf>700,000 hours remote on/off control ul1950 safety approval internal smt construction 4:1 ultra wide input range ul 94v-0 package material complies with en55022 class a call factory for more output power options chassis mount options: open frame, u channel, and enclosed types available specifications: cmdmw series all specifications are based on 25c, nominal input voltage, 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 ) operating voltage range 9-36, 18-75 vdc 24v input models 8 8.5 9 vdc start voltage 48v input models 15 17 18 vdc 24v input models 7 8 8.5 vdc under voltage shutdown 48v input models 13 15 17 vdc reverse polarity input current 1 a short circuit input power 3500 mw 24v input models -0.7 50 vdc input surge voltage (1000ms) 48v input models -0.7 100 vdc output (v o ) output voltage range see rating chart output voltage accuracy 1.0 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 rating chart ripple & noise (peak to peak) 20mhz 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 25% load step change 300 500 s transient response deviation 25% load step change 2 4 % remote on/off 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 general efficiency see rating chart 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 khours conducted emi en55022 class a physical weight approximately 6oz dimensions 4.00(l) x 2.25(w) x 0.81(h) inches flammability ul94v-0 heatsink material aluminum heatsink finish anodic treatment (black)
wall industries, inc. 5 watson brook road exeter, nh 03833 603-778-2300 www.wallindustries.com fax 603-778-9797 cmdmw series 15 watt single outpu t chassis mount dc/dc converte r 4:1 ultra wide input voltage range rev. b output voltage / current rating chart output current input current model number input voltage output voltage min max no load max load reflected ripple current efficiency (typ) max capacitive load cmdmw24s3.3-3000 3.3 vdc 300 ma 3000ma 528 ma 78% 470 f cmdmw24s5-3000 5 vdc 300 ma 3000 ma 762 ma 82% 470 f cmdmw24s5.1-3000 5.1 vdc 300 ma 3000 ma 735 ma 81% 470 f cmdmw24s12-1250 12 vdc 125 ma 1250 ma 726 ma 85% 470 f CMDMW24S15-1000 24 vdc (9 - 36 vdc) 15 vdc 100 ma 1000 ma 25ma (typ) 771 ma 40ma (typ) 86% 470 f cmdmw48s3.3-3000 3.3 vdc 300 ma 3000 ma 26 ma 78% 470 f cmdmw48s5-3000 5 vdc 300 ma 3000 ma 381 ma 82% 470 f cmdmw48s5.1-3000 5.1 vdc 300 ma 3000 ma 368 ma 81% 470 f cmdmw48s12-1250 12 vdc 125 ma 1250 ma 363 ma 85% 470 f cmdmw48s15-1000 48 vdc (18 - 75 vdc) 15 vdc 100 ma 1000 ma 15ma (typ) 386 ma 30ma (typ) 86% 470 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. ripple and noise measured at 20mhz bandwidth. 3. the cmdmw series requires a minimum 10% load on the output to maintain specified regulation. operation under no-load conditi on will not damage these devices, however they may not meet all listed specifications. 4. other input and output voltages may be available, please contact factory. 5. on/off control is optional, please contact factory. control voltage referenced to negative input (-vin). 6. heat-sink is optional, consult factory. 7. chassis mount options: no suffix fo r open frame, ?u? suffix for u channel , and ?e? suffix for enclosed type. block diagram input voltage transient rating
wall industries, inc. 5 watson brook road exeter, nh 03833 603-778-2300 www.wallindustries.com fax 603-778-9797 cmdmw series 15 watt single outpu t chassis mount dc/dc converte r 4:1 ultra wide input voltage range rev. b mechanical drawing unit: inches [mm] + v i n - v i n c n t l - o u t t r m + o u t 4.00 [101.6] .81 [20.6] 2.25 [57.2] 3.66 [93.0] 1.13 [28.6] . 1 7 [ 4 . 3 ] label .16 [4.06] 2x model name
wall industries, inc. 5 watson brook road exeter, nh 03833 603-778-2300 www.wallindustries.com fax 603-778-9797 cmdmw series 15 watt single outpu t chassis mount dc/dc converte r 4:1 ultra wide input voltage range rev. b design & feature consideratons remote 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 l ow. to turn the power module on and off, the user must supply a switch to c ontrol the voltage betwe en the on/off terminal a nd the -vin terminal . the switch can 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 50ua. over current protection to provide protection in a fault (output ov erload) 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, the unit shifts from voltage control to current co ntrol. the unit operates normally once the ou tput current is brought ba ck into its specified range . efficiency vs input voltage efficiency vs output load derating curve without heatsink derating curve with heatsink
wall industries, inc. 5 watson brook road exeter, nh 03833 603-778-2300 www.wallindustries.com fax 603-778-9797 cmdmw series 15 watt single outpu t chassis mount dc/dc converte r 4:1 ultra wide input voltage range rev. b test configurations input reflected-ripple current test setup input reflected-ripple current is measured with an inductor lin (4.7uh) and cin (220uf, esr < 1.0 ? at 100 khz) 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. peak-to-peak output noise measurement test use a cout 0.47uf ceramic capacitor. scope measurement should be made by using a bnc socket; measur ement bandwidth is 0-20 mhz. position the load between 50 mm and 75 mm from the dc/dc converter. thermal considerations many conditions affect the thermal performan ce of the power module, such as orientat ion, airflow over the module, and board spa cing. to avoid exceeding the maximum temperature rati ng of the components inside the power module , the case temperature must be kept bel ow 100c. the derating curves are determined from m easurements obtained in an experimental apparatus.
wall industries, inc. 5 watson brook road exeter, nh 03833 603-778-2300 www.wallindustries.com fax 603-778-9797 cmdmw series 15 watt single outpu t chassis mount dc/dc converte r 4:1 ultra wide input voltage range rev. b 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 budget. 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 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 sup port 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)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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