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for more information, please visit the product page. ????????? ?????????????????? cui .com 05/20/2016 1 of 13 series : prd25 description: dc-dc converter features ? up to 25 w isolated output ? industry standard 1 x 1 package ? 2:1 input range ? low ripple & noise ? over voltage, over current, short circuit, and over temperature protections ? remote on/off control ? output trim ? -40 to 85 c temperature range ? efficiency up to 91% ? ul/cul safety approval model input voltage output voltage output current output power ripple & noise 1 effciency typ (vdc) range (vdc) (vdc) min (a) max (a) max (w) max (mvp-p) typ (%) prd25-d48-s3 48 36~75 3.3 0.75 7.5 25 80 89.5 prd25-d48-s5 48 36~75 5 0 5 25 80 91 PRD25-D48-S12 48 36~75 12 0 2.1 25.2 120 87.5 notes: 1. at full load, nominal input, 20 mhz bandwidth oscilloscope, input terminated with a 4.7 f capacitor. output terminated with 1 f and 10 f low esr capacitors. 2. all specifcations are measured at ta=25c, nominal input voltage, and rated output load unless otherwise specifed. all models are tested and specifed with a 4.7 f on the input, and with 1 f and 10 f low esr capacitors on the output. part number key base number packaging style: d = dip m = smt prd25 - d xx - s xx - x - x - x output voltage input voltage remote on/off control: p = positive logic n = negative logic package options: blank = standard (through hole models only) tr = tape & reel (smt models only) date page
for more information, please visit the product page. ?????????????????? cui .com date 05/20/2016 page 2 of 13 cui inc series : prd25 description: dc-dc converter input parameter conditions/description min typ max units operating input voltage 36 48 75 vdc current at nominal vin 3.3 vdc output models 5 vdc output models 12 vdc output models 0.81 0.79 0.842 a a a start-up voltage rising input voltage 3.3, 12 vdc output models 5 vdc output models 34 34 35.2 35 36 36 vdc vdc under voltage shutdown falling input voltage 3.3, 12 vdc output models 5 vdc output models 32 32 34 33.5 35.2 34.5 vdc vdc remote on/off 1 3.3 vdc output models positive logic on (10~15 vdc or open circuit) off (-0.7~1.2 vdc) negative logic on (-0.7~1.2 vdc) off (10~15 vdc or open circuit) 5, 12 vdc output models positive logic on (10~15 vdc or open circuit) off (-0.7~0.7 vdc) negative logic on (-0.7~0.8 vdc) off (10~15 vdc or open circuit) flter 3.3, 5 vdc output models: lc flter 12 vdc output models: capacitance flter input reverse polarity protection no input fuse recommended to add 1.5 a fast blow fuse notes: 1. on/off current is 1 ma. output parameter conditions/description min typ max units maximum capacitive load low esr <0.02 ?, full load 3.3, 5 vdc output models 12 vdc output models 2,000 470 f f line regulation 50% load, input voltage from low to high 3.3, 5 vdc output models 12 vdc output models 0.1 0.075 % % load regulation at nominal vin, 0~100% load 3.3, 5 vdc output models 12 vdc output models 0.2 0.05 % % voltage accuracy at 50% load 1 % start-up time 50 ms adjustability see application notes 10 % switching frequency 3.3, 5 vdc output models 12 vdc output models 300 295 330 325 360 355 khz khz dynamic load response 50-75-50% load change to 2% vout 3.3 vdc output models 5 vdc output models 180 200 250 s s 50-75-50% load change to 1% vout 12 vdc output models 100 200 s temperature coeffcient 0.02 %/c
for more information, please visit the product page. ?????????????????? cui .com date 05/20/2016 page 3 of 13 cui inc series : prd25 description: dc-dc converter protections parameter conditions/description min typ max units over voltage protection via magnetic feedback 3.3 vdc output models 5 vdc output models 12 vdc output models 4.2 6 14 5 6.5 19 5.7 7.5 22 vdc vdc vdc over current protection current limiting 3.3 vdc output models 5 vdc output models 12 vdc output models 8.5 5.3 2.3 10 6.8 3 11 7.3 3.4 a a a short circuit protection current limiting, hiccup auto restart 0.3 a over temperature protection 3.3, 5 vdc output models 12 vdc output models 110 130 115 135 120 150 c c safety and compliance parameter conditions/description min typ max units isolation voltage input to output, continuous, basic insulation 2,250 vdc isolation resistance 10 m? isolation capacitance 3.3 vdc output models 5 vdc output models 12 vdc output models 1,000 2,000 1,700 pf pf pf safety approvals ul 60950-1, 2nd edition lvd 2006/95/ec (ce mark) conducted emissions 1 en55022/cispr22, class b (external circuit required, see figure 3) radiated emissions 1 en55022/cispr22, class b (external circuit required, see figure 3) mtbf as per telcordia sr-332 method 1, case 3, ground fxed conditions, ta=40c 2,000,000 hours rohs 2011/65/eu notes: 1. layout and the environment play an infuential role with the flters performance. performance will depend on the users pcb layout, the chassis shielding environment, choice of external components, and other circuits present. environmental parameter conditions/description min typ max units operating temperature see derating curves -40 85 c storage temperature -55 125 c operating humidity non-condensing 10 90 % altitude derates 1% /1000 ft -500 -152 10,000 3048 ft m
for more information, please visit the product page. ?????????????????? cui .com date 05/20/2016 page 4 of 13 cui inc series : prd25 description: dc-dc converter mechanical parameter conditions/description min typ max units dimensions through hole: 1.10 x 0.96 x 0.33 [27.9 x 24.4 x 8.4 mm] surface mount: 1.10 x 0.96 x 0.33 [27.9 x 24.4 x 8.4 mm] inches inches weight 9.07 g 260 240 220 180 160 140 120 100 80 60 40 20 time (minutes) t emper ature (c) 0 1 2 3 4 5 6 7 optimal peak 245 ?c, max peak 260 ?c t al at 60 seconds (r ange 45-75 seconds) sac305 liquidus at 219 c ra mp at 1 c/second across liquidu s adjust ra mp for so a k if required keep ra mp ra t es under 2 c/secon d cooling ra te 2-3 c/second solderability parameter conditions/description min typ max units wave soldering for sn/ag/cu based solders (for through hole models): preheat temperature solder pot temperature solder dwell time 115 270 7 c c s refow soldering refow solder profle below is suitable for sac305 type lead-free solders (for surface mount models) 245 260 c
for more information, please visit the product page. ?????????????????? cui .com date 05/20/2016 page 5 of 13 cui inc series : prd25 description: dc-dc converter mechanical drawing ( through hole ) units: inches [mm] tolerance: x.xx 0.02 [0.5] x.xxx 0.010 [0.25] 0.33 8.4 side view mounting plane .040.002 pin diameter .071 .002 shoulder diameter 6x at pins 1-6 0.41 [10.4] 0.30 [7.62] 0.400 10.1 6 typ 0.15 [3.8] 0.58 [14.7] bottom view #5 #4 #3 c l c l c l #6 #2 #1 recommended pri-sec barrier 0.400 10.16 0.400 10.16 0.100 2.54 0.200 5.08 0.800 20.3 2 top view pin #1 1.10 27.9 0.96 24.4 end view 0.475 [12.07] re f 0.25 6.3 pin connections pin function 1 +vin 2 -vin 3 +vout 4 output trim 5 -vout 6 on/off control
for more information, please visit the product page. ?????????????????? cui .com date 05/20/2016 page 6 of 13 cui inc series : prd25 description: dc-dc converter mechanical drawing ( surface mount ) units: inches [mm] tolerance: x.xx 0.02 [0.5] x.xxx 0.010 [0.25] top view 1.10 27.9 0.96 24.4 pin #1 side view mounting plane 0.093 [2.4] typ 0.41 [10.4] 0.30 [7.62] 0.400 10.1 6 typ 0.15 [3.8] 0.58 [14.7] bottom view #5 #4 #3 c l c l c l #6 #2 #1 recommended pri-sec barrier 0.400 10.1 6 0.400 10.1 6 0.100 2.54 0.200 5.08 0.800 20.3 2 end view 0.13 [3.3] re f 0.093 [2.4] 0.33.03 [8.40.8] [10.16] 0.400 0.400 [10.16] [2.54] 0.100 [2.54] [20.32] 0.800 .010 .102 0.25] [2.60 6x 0.100 1.00 [25.4] 1 2 6 4 5 3 1.14 [29.0] c l c l recommended pcb layout top view pin connections pin function 1 +vin 2 -vin 3 +vout 4 output trim 5 -vout 6 on/off control
for more information, please visit the product page. ?????????????????? cui .com date 05/20/2016 page 7 of 13 cui inc series : prd25 description: dc-dc converter derating curves ambient t emper ature ( c) output current (a ) -40 40 45 50 55 60 65 70 75 80 85 7 6 0 7.5 0.33 m/s (65 lfm ) 0.5 m/s (100 lfm) 0.33 to 2.0 m/s (65 to 400 lfm ) vin=36v , 48v , 60v 1.0 to 2.0 m/s (200 to 400 lfm ) vin=75v prd25-d48-s3 derating curves @ sea level (airfow from input to output) output current (a ) ambient t emper ature ( c) -40 40 45 50 55 60 65 70 75 80 85 0.33 to 2.0 m/s (65 to 400 lfm) 0 4.6 4.7 4.8 4.9 5.0 prd25-d48-s5 derating curves @ sea level (airfow from input to output) -40 70 75 80 85 0.33 m/s (65 lfm) 0.5 m/s (100 lfm) 1.0 m/s (200 lfm) ambient t emper ature ( c) output current (a ) 1.95 2.0 2.05 2.1 0 PRD25-D48-S12 derating curves @ sea level (vin=36v, airfow from input to output) -40 70 75 80 85 0 ambient t emper ature ( c) output current (a ) 2.025 2.05 2.075 2.1 0.33 m/s (65 lfm) 0.5 m/s (100 lfm) PRD25-D48-S12 derating curves @ sea level (vin=48v, airfow from input to output) ambient t emper ature ( c) output current (a ) -40 0 70 75 80 85 2.025 2.05 2.075 2.1 0.33 m/s (65 lfm) 0.5 m/s (100 lfm) 1.0 m/s (200 lfm) PRD25-D48-S12 derating curves @ sea level (vin=60v, airfow from input to output) ambient t emper ature ( c) output current (a ) -40 70 75 80 85 0 1.95 2.0 2.05 2.1 0.33 m/s (65 lfm) 0.5 m/s (100 lfm) 1.0 m/s (200 lfm) PRD25-D48-S12 derating curves @ sea level (vin=75v, airfow from input to output)
for more information, please visit the product page. ?????????????????? cui .com date 05/20/2016 page 8 of 13 cui inc series : prd25 description: dc-dc converter 7 12 17 22 27 32 37 42 47 52 57 62 67 72 77 82 87 92 0. 20 .7 1. 21 .7 2. 22 .7 3.2 3.7 4.24 .7 5.2 5.7 6.2 6.7 7.2 7. 7 vin = 36v vin = 48v vin = 60v vin = 75v load current (a mps) ef ?c ie ncy (% ) efficiency curves prd25-d48-s3 effciency curve (effciency vs. line voltage and load current @ 25c) 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 1. 01 .4 1. 82 .2 2.63 .0 3.4 3.8 4.24 .6 5.0 vin = 36v vin = 48v vin = 60v vin = 75v load current (a mps) ef ?c ie ncy (% ) prd25-d48-s5 effciency curve (effciency vs. line voltage and load current @ 25c) 78 79 80 81 82 83 84 85 86 87 88 89 vin = 36v vin = 48v vin = 60v vin = 75v load current (a mps) ef ? ci ency (% ) 0.4 0.6 0.8 0.9 1.1 1.3 1.4 1.6 1.8 1.9 2. 1 PRD25-D48-S12 effciency curve (effciency vs. line voltage and load current @ 25c)
for more information, please visit the product page. ?????????????????? cui .com date 05/20/2016 page 9 of 13 cui inc series : prd25 description: dc-dc converter packaging ( through hole ) section a- a depth pocket 9.5 [.38 in] 19.1 [.75 in] typ ty p r 28.4 177. 8 [9.92] 252.0 typ 6.4 ty p 6.4 6.4 ty p 18.0 5x ref 38. 1 22.9 190. 5 ref 252.0 [9.92] 25.4 4x 44.5 a a 19.1 ref 252. 0 ref 252. 0 ref 9.5 deep ref anti-static foam label label each tray is 6 x 5 units (30 units per tray) units: mm [inches] tolerance: +1/-0 mm tray material: dow 220 anti-static ethafoam tray size: 252 x 252 x 19.1 mm qty: 30 pcs per tray (6 x 5)
for more information, please visit the product page. ?????????????????? cui .com date 05/20/2016 page 10 of 13 cui inc series : prd25 description: dc-dc converter packaging ( surface mount ) units: inches [mm] tape & reel: conforms to eia-481 reel size: ?13 qty: 100 pcs per reel note: the smt package has an msl 2 rating
for more information, please visit the product page. ?????????????????? cui .com date 05/20/2016 page 11 of 13 cui inc series : prd25 description: dc-dc converter test configurations input ripple current & output noise all models are tested and specifed for input refected ripple current and output noise as per layouts shown in figures 1 & 2. the cbus and lbus components simulate a typical dc voltage bus. however, your specifc system confguration may require additional considerations. figure 1 measuring input ripple current table 1 c in 33f, esr < 700m? @ 100khz c bus 220f, esr < 100m? @ 100khz l bus 12h c in vi n c bus l bus 1 2 +vin ?vin current probe to oscilloscope + ? + ? figure 2 measuring output ripple and noise (pard) table 2 c1 1f c2 10f load 2-3 inches (51-76mm) from module c1 c2 r load scope +vout ?vout emc recommended circuit dc source uut v+ v- vin-v out- vin+ resistive load inside a metal container v out+ black c1 l1 c2 l2 6 c 3 c c4 c5 resistive load recommended external circuit components l1 1 mh, 6 a l2 4.7 h, 3.6 a c1, c2 electrolytic capacitor 22 fd, 100 v c3 qty. 2 - electrolytic capacitor 22 fd, 100 v c4, c5 3.3 nf, 1500 v c6 electrolytic capacitor 22 fd, 100 v table 3 figure 3 conducted emissions test circuit
for more information, please visit the product page. ?????????????????? cui .com date 05/20/2016 page 12 of 13 cui inc series : prd25 description: dc-dc converter output voltage trimming the output voltage can be adjusted by using the trim pin and a single fxed resistor (see figures 4 & 5). trimming resistors should have a low temperature coeffcient ( 100 ppm/c or less) and be mounted close to the converter. if the trim function is not needed, leave the trim pin open. application notes +vout trim on/off control ?vin load r trim up ?vout +vin figure 4 trim adjustments to decrease output voltage using a fixed resistor load r trim down +vout trim on/off control ?vin ?vout +vin figure 5 trim adjustments to increase output voltage using a fixed resistor figure 6. driving the on/off control pin (suggested circuit) note: r trim-up is the external resistor in ? r trim-down is the external resistor in ? v o, nom is the nominal output voltage v o is the desired output voltage on/of f contro l -vin +vcc vout a b c 3.3 12775 2050 5110 5 12775 2050 5110 12 25000 5110 10000 remote on/off control the dc-dc converter can be ordered with either positive or negative logic. see page 2 for enable/disable details for both positive and negative logic options. dynamic control of the on/off function should be able to sink appropriate signal current when brought low and withstand appropriate voltage when brought high. be aware that there is a fnite time in milliseconds between the the time of on/off control activation and stable, regulated output. this time will vary slightly with output load type and current and input conditions. cautions when using the on/off control: 1. to retain full output circuit isolation, control the on/off from the input side only. 2. while it is possible to control the on/off with external logic if you carefully observe the voltage levels, the preferred circuit is either an open drain/open collector transistor, a switch, or a relay. 3. do not apply voltages to the on/off pin when there is no input power voltage, otherwise the converter may be permanently damaged.
for more information, please visit the product page. ????????? date 05/20/2016 page 13 of 13 cui inc series : prd25 description: dc-dc converter cui offers a two (2) year limited warranty. complete warranty information is listed on our website. cui reserves the right to make changes to the product at any time without notice. information provided by cui is believed to be accurate and reliable. however, no responsibility is assumed by cui for its use, nor for any infringements of patents or other rights of third parties which may result from its use. cui products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. a critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safet y or effectiveness. headquarters 20050 sw 112th ave. tualatin, or 97062 800.275.4899 fax 503.612.2383 cui .com techsupport@cui.com rev. description date 1.0 initial release 05/20/2016 the revision history provided is for informational purposes only and is believed to be accurate. revision history

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