single output a-series, uwr models features high-density, 2" x 1" 1-6 amp, 9-15 watt dc/dc's figure 1. simpli ed schematic the new 1.5v, 1.8v and 2.5v models in datel?s ? agship 9-15 watt a-series can source a continuous 6 amps. this is the most "low-voltage" current available from a standard 1" x 2" package, and these power converters exemplify datel?s relentless drive to bring you more power/current, from standard packages, without compromising reliability or resorting to thermal specmanship. by combining a high-frequency (310khz), high-ef? ciency (to 88%), synchronous- recti? er topology with the newest components and time-tested, fully automated, smt-on-pcb construction, these uwr models are able to bring you 9-15w (@ up to 6a) in the standard 2" x 1" package from which most competitors can only get 5-10w (@ 3-4a). all uwr?s deliver their full output power over ambient temperature ranges from ?40 c to as high as +70 c (model and input voltage dependent) without heat sinks or supplemental forced-air cooling. devices derate to +100 c. output voltages are 1.5, 1.8, 2.5, 3.3, 5, 12 or 15 volts. input voltage ranges are 10-18v ("d12" models), 18-36v ("d24" models) or 36-75v ("d48") models. all models feature input pi ? lters, input undervoltage and overvoltage lockout, input reverse-polarity protection, output overvoltage protection, output current limiting, and continuous short-circuit protection. on/off control, sync, and output-trim functions are optional (see optional functions). all models are certi? ed to iec950, ul1950 and en60950 safety requirements for operational insulation. "d48" models (36-75v inputs) are ce marked. uwr 9-15w dc/dc?s are packaged in low-cost, light-weight, diallyl phthalate (ul94v-0 rated) plastic packages with standoffs. emc compliance is achieved via a low-noise design rather than through expensive metal shielding. a- series innovation and ex c ell e n c e ? ? ?v out +v in ?v in pwm controller opto isolation reference & error amp comparators uvlo & ovlo on/off control or sync ( optional ) trim (optional) +v out switch control 1.5/1.8/2.5v out models source 6 amps 3.3v out models source 4.25 amps 5/12/15v out models deliver full 15 watts 310khz synchronous-recti er topologies guaranteed ef ciencies to 86% choice of 3 input voltage ranges: 10-18v, 18-36v, 36-75v ?0 to +60/70 c ambient w/o derating fully isolated (1500vdc); i/o protected ul1950/en60950 certi ed ce mark (75v in models) standard 2" x 1" packages and pinouts optional v out trim, sync, on/off control pin compatible with lucent lc/lw series 1.5, 1.8, 2.5, 3.3v and 5v-output models use the synchronous-recti er con guration shown above. 12v and 15v-output models employ a standard forward architecture. datel, inc., mans? eld, ma 02048 (usa) tel: (508)339-3000, (800)233-2765 fax: (508)339-6356 email: sales@datel.co m internet: www.datel.com new 1.5, 1.8 & 2.5 volt models
a series 9-15w, single output dc/dc converters r/n (mvp-p) ? regulation (max.) ef ciency package v out i out v in nom. range i in ? (case, model (volts) (ma) typ. max. line load ? (volts) (volts) (ma) min. typ. pinout) 2 performance speci cations and ordering guide ? typical at t a = +25? under nominal line voltage and full-load conditions, unless otherwise noted. ? ripple/noise (r/n) is tested/speciifed over a 20mhz bandwidth. all models are speci ed with two external 0.47? multi-layer ceramic capacitors installed across their output pins. ? uwr-1.5/6000-d12a 1.5 6000 45 65 ?.2% ?.3% 12 10-18 85/914 tbd 82% c14, p22 uwr-1.5/6000-d24a 1.5 6000 45 65 ?.2% ?.3% 24 18-36 50/454 tbd 82.5% c14, p22 uwr-1.5/6000-d48a 1.5 6000 45 65 ?.2% ?.3% 48 36-75 40/226 tbd 83% c14, p22 uwr-1.8/6000-d12a 1.8 6000 50 70 ?.2% ?.3% 12 10-18 85/1084 tbd 83% c14, p22 uwr-1.8/6000-d24a 1.8 6000 50 70 ?.2% ?.3% 24 18-36 50/539 tbd 83.5% c14, p22 uwr-1.8/6000-d48a 1.8 6000 50 70 ?.2% ?.3% 48 36-75 40/268 tbd 84% c14, p22 uwr-2.5/6000-d12a 2.5 6000 60 80 ?.2% ?.3% 12 10-18 80/1489 tbd 84% c14, p22 uwr-2.5/6000-d24a 2.5 6000 60 80 ?.2% ?.3% 24 18-36 45/740 tbd 84.5% c14, p22 uwr-2.5/6000-d48a 2.5 6000 60 80 ?.2% ?.3% 48 36-75 35/367 tbd 85% c14, p22 uwr-3.3/4250-d12a 3.3 4250 85 100 ?.2% ?.5% 12 10-18 80/1375 83% 85% c14, p22 uwr-3.3/4250-d24a 3.3 4250 85 100 ?.2% ?.5% 24 18-36 45/672 84.5% 87% c14, p22 uwr-3.3/4250-d48a 3.3 4250 85 100 ?.2% ?.5% 48 36-75 35/336 85% 87% c14, p22 uwr-5/3000-d12a 5 3000 85 100 ?.2% ?.3% 12 10-18 110/1471 83% 85% c14, p22 uwr-5/3000-d24a 5 3000 85 100 ?.2% ?.3% 24 18-36 55/710 85.5% 88% c14, p22 uwr-5/3000-d48a 5 3000 85 100 ?.2% ?.3% 48 36-75 35/355 85.5% 88% c14, p22 uwr-12/1250-d12a 12 1250 85 100 ?.2% ?.3% 12 10-18 20/1471 82.5% 85% c14, p22 uwr-12/1250-d24a 12 1250 85 100 ?.2% ?.3% 24 18-36 20/718 85% 87% c14, p22 uwr-12/1250-d48a 12 1250 85 100 ?.2% ?.3% 48 36-75 20/359 85% 87% c14, p22 uwr-15/1000-d12a 15 1000 85 100 ?.2% ?.3% 12 10-18 20/1471 82.5% 85% c14, p22 uwr-15/1000-d24a 15 1000 85 100 ?.2% ?.3% 24 18-36 20/718 85% 87% c14, p22 uwr-15/1000-d48a 15 1000 85 100 ?.2% ?.3% 48 36-75 20/359 85% 87% c14, p22 wide range input output con guration: u = unipolar nominal output voltage: 1.5, 1.8, 2.5, 3.3, 5, 12 or 15 volts maximum output current in ma input voltage range: d12 = 10-18 volts (12v nominal) d24 = 18-36 volts (24v nominal) d48 = 36-75 volts (48v nominal) u wr 3000 - / d48 a - 5 optional functions t trim function on pin 5. no pin 3. c on/off control function (positive polarity) on pin 3. no pin 5. ct on/off control function (positive polarity) on pin 3. trim function on pin 5. l1 pin length: 0.110 in. (2.79mm) ?.010 l2 pin length: 0.145 in. (3.68mm) ?.010 n on/off control function (negative polarity) on pin 3. no pin 5. nt on/off control function (negative polarity) on pin 3. trim function on pin 5. s sync function on pin 3. no pin 5. st sync function on pin 3. trim function on pin 5. blank -- no trim function. no on/off control function. * pins 3 and 5 are optional. see optional functions and technical notes for details. case c14 ct a-series high reliability optional functions see below output input part number structure mechanical specifications pin function p22 1 +input 2 ?nput 3 on/off control* 4 +output 5 trim* 6 common i/o connections ? load regulation is speci ed over 10%-100% load conditions. 1.5-5v models are stable and regulate under no-load conditions. 12/15v models have minimum loading requirements. see performance/functional speci cations. ? nominal line voltage, no-load/full-load conditions. preliminary 1 2 4 5 6 plastic case standoff 0.020 (0.51) 3 1.00 (25.40) 2.00 (50.80) 0.20 min (5.08) 0.400 (10.16) 0.800 (20.32) 0.800 (20.32) 0.60 (15.24) 0.49 (12.45) 0.040 0.002 dia. (1.016 0.051) bottom view 0.200 (5.08) 0.100 (2.54) 0.10 (2.54) dimension are in inches (mm) lx pin length option: l1 = 0.110" l2 = 0.145"
uwr models 9-15w, single output dc/dc converters 3 performance/functional speci cations typical @ t a = +25? under nominal line voltage and full-load conditions, unless noted. ?? input voltage: continuous: d12 models 22 volts d24 models 44 volts d48 models 88 volts transient (100msec): d12 models 50 volts d24 models 50 volts d48 models 100 volts input reverse-polarity protection current must be <10 amps. brief duration only. fusing recommended. output overvoltage protection: 1.5/1.8v outputs tbd/tbd volts, unlimited duration 2.5v/3.3v outputs tbd/4.5 volts, unlimited duration 5v/12v/15v outputs 6.8/15/18 volts, unlimited duration output current current limited. devices can withstand sustained output short circuits without damage. case temperature +100? storage temperature ?0 to +105? lead temperature (soldering, 10 sec.) +300? these are stress ratings. exposure of devices to any of these conditions may adversely affect long-term reliability. proper operation under conditions other than those listed in the performance/functional speci cations table is not implied. absolute maximum ratings input input voltage range: d12a models 10-18 volts (12v nominal) d24a models 18-36 volts (24v nominal) d48a models 36-75 volts (48v nominal) overvoltage shutdown: d12a models 18.5-21 volts (20v typical) d24a models 37-40 volts (38v typical) d48a models 77-81 volts (78.5v typical) start-up threshold: ? d12a models 9.4-9.8 volts (9.6v typical) d24a models 16.5-18 volts (17v typical) d48a models 34-36 volts (35v typical) undervoltage shutdown: ? d12a models 7.5-8.5 volts (8v typical) d24a models 16-17 volts (16.5v typical) d48a models 32.5-35.5 volts (34v typical) input current: normal operating conditions see ordering guide standby mode (off, ov, uv) 5ma input filter type pi reverse-polarity protection brief duration, 10a maximum on/off control (optional, pin 3): ? ? d12ac, d24ac, & d48ac models on = open or 13v - +v in , i in = 50? max. off = 0-0.8v, i in = 1ma max. d12an, d24an, & d48an models on = 0-0.8v, i in = 2.6ma max. off = open or 3.3-5.5v, i in = 1ma max. sync (optional, pin 3) ? ? input threshold (rising edge active) 1-2.7 volts input voltage low 0-0.9 volts input voltage high 2.8-5 volts input resistance 35k ? minimum output high voltage (100? load) 3.5-4.8 volts output drive current 35ma input/output pulse width 160-360nsec output v out accuracy (50% load): 1.5v/1.8v/2.5v/3.3v outputs ?.5%, maximum 5/12/15v outputs ?%, maximum minimum loading for speci cation: ? 1.5v/1.8v/2.5v/3.3v/5v outputs no load 12v/15v outputs 10% of i out max. minimum loading for stability: ? 1.5v/1.8v/2.5v/3.3v/5v outputs no load 12v/15v outputs 25ma ripple/noise (20mhz bw) ? ? see ordering guide line/load regulation see ordering guide ef ciency see ordering guide isolation voltage: input-to-output 1500vdc minimum isolation capacitance 470pf isolation resistance 100m ? current limiting: 1.5v/1.8v/2.5v/3.3v/5v outputs hiccup technique, auto-recovery 12v/15v outputs power-limiting technique, auto-recovery overvoltage protection zener/transorb clamp, magnetic feedback temperature coef cient ?.04% per ?. dynamic characteristics transient response (50% load step) 200?ec max. to ?.5% of nal value start-up time: ? v in to v out 50msec on/off to v out 30msec switching frequency 310khz (?0khz) environmental operating temperature (ambient): without derating ? ?0 to +60/70? with derating to +100? (see derating curves) case temperature: maximum allowable +100? storage temperature ?0 to +105? physical dimensions 2" x 1" x 0.49" (51 x 25 x 12.45mm) shielding none case material diallyl phthalate, ul94v-0 rated pin material brass, solder coated weight 1.4 ounces (39.7 grams) ? all models are speci ed with two external 0.47? multi-layer ceramic capacitors installed across their output pins. ? see minimum output loading requirements under technical notes. ? see technical notes for details. ? the on/off control, sync and trim functions are optional and must be installed by datel. see optional functions or contact datel for details. ? the on/off control is designed to be driven with open-collector logic or the application of appropriate voltages (referenced to ?nput (pin 2)). applying a voltage to the on/off control pin when no input voltage is applied to the converter may cause permanent damage. see technical notes. ? output noise maybe further reduced with the addition of additional external output capacitors. see technical notes. ? operating temperature range without derating is model and input-voltage dependent. see temperature derating.
a series 9-15w, single output dc/dc converters 4 trimming output voltages these converters have a trim capability (pin 5) that allows users to adjust the output voltage ?%. adjustments to the output voltage can be accomplished via a trim pot, figure 2, or a single xed resistor as shown in figures 3 and 4. a single xed resistor can increase or decrease the output voltage depending on its connection. fixed resistors should have an absolute tcr less than 100ppm/? to minimize sensitivity to changes in temperature. a single resistor connected from the trim (pin 5) to the +output (pin 4), see figure 3, will decrease the output voltage. a resistor connected from the trim (pin 5) to output common (pin 6) will increase the output voltage. 20k ? 5-22 tu r n s +input +output common trim ?input on/off control 1 2 3 4 5 load 6 +input +output common trim ?input on/off control 1 2 3 4 5 load 6 r trim down +input +output common trim ?input on/off control 1 2 3 4 5 load 6 r trim up figure 2. trim connections using a trim pot figure 4. trim connections to increase output voltage using fixed resistors figure 3. trim connections to decrease output voltage using fixed resistors ?16.9 down r t (k ? ) = 3.3 ? v o 2.49(v o ? 1.27) uwr-3.3/4250-d12a uwr-3.3/4250-d24a uwr-3.3/4250-d48a ?16.9 up r t (k ? ) = v o ? 3.3 3.16 ?15 down r t (k ? ) = 5 ? v o 2.49(v o ? 2.527) uwr-5/3000-d12a uwr-5/3000-d24a uwr-5/3000-d48a ?15 up r t (k ? ) = v o ? 5 6.292 ?49.9 down r t (k ? ) = 12 ? v o 6.34(v o ? 5.714) uwr-12/1250-d12a uwr-12/1250-d24a uwr-12/1250-d48a ?49.9 up r t (k ? ) = v o ? 12 36.23 ?63.4 down r t (k ? ) = 15 ? v o 7.87(v o ? 7.136) uwr-15/1000-d12a uwr-15/1000-d24a uwr-15/1000-d48a ?63.4 up r t (k ? ) = v o ? 15 56.16 accuracy of adjustment is subject to tolerances or resistor values and factory-adjusted output accuracy. v o = desired output voltage. model trim equation technical notes floating outputs since these are isolated dc/dc converters, their outputs are " oating." designers will usually use the output common (pin 6) as the ground/return of the load circuit. you can, however, use the +output (pin 4) as ground/return to effectively reverse the output polarity. minimum output loading requirements 1.5-5v models employ a synchronous-recti er design topology. all models regulate within spec and are stable under no-load conditions. 12/15v models employ a traditional forward architecture and require 10% loading (125ma for 12v models, 100ma for 15v models) to achieve their listed regulation specs. 12/15v models also have a minimum-load-for-stability requirement (25ma). for 12/15v models, operation between 25ma and 10% loading will result in stable operation but regulation may degrade. operation under no-load conditions will not damage the 12/15v devices; however they may not meet all listed speci cations. filtering and noise reduction all a-series uwr 9-15 watt dc/dc converters achieve their rated ripple and noise speci cations using the external input and output capacitors speci ed in the performance/functional speci cations table. in critical applications, input/output noise may be further reduced by installing additional external i/o caps. input capacitors should be selected for bulk capacitance, low esr and high rms-ripple-current ratings. output capacitors should be selected for low esr and appropriate frequency response. all caps should have appropriate voltage ratings and be mounted as close to the converters as possible. the most effective combination of external i/o capacitors will be a function of your particular load and layout conditions. our applications engineers will be happy to recommend potential solutions and can discuss the possibility of our modifying a given device s internal ltering to meet your speci c require- ments. contact our applications engineering group for additional details. input fusing certain applications and/or safety agencies may require the installation of fuses at the inputs of power conversion components. fuses should also be used if the possibility of sustained, non-current-limited, input-voltage polarity reversals exists. for datel a-series uwr 9-15 watt dc/dc converters, you should use slow-blow type fuses with values no greater than the following. v in range fuse value "d12a" models 3 amps "d24a" models 2 amps "d48a" models 1 amp trim adjustment greater than 5% can have an adverse effect on the convert- er's performance and is not recommended.
uwr models 9-15w, single output dc/dc converters temperature derating the thermal performance of a-series uwr 15 watt dc/dc converters is depicted in the derating curves shown below. all devices, when operated at full load, in still ambient air, over their full speci ed input voltage range, can safely operate to +60?. all models, other than the d12a models (10-18 volt input range), can operate at higher ambient temperatures if the input range is narrowed. for example, model uwr-5/3000-d48a can operate safely to +70? if the input range is kept between 36 and 48 volts. contact datel's applications engineering group if you need additional details. 5 start-up threshold and undervoltage shutdown under normal start-up conditions, devices will not begin to regulate until the ramping-up input voltage exceeds the start-up threshold voltage (35v for "d48a" models). once operating, devices will not turn off until the input volt- age drops below the undervoltage shutdown/lockout limit (34v for "d48a" models). subsequent re-start will not occur until the input is brought back up to the start-up threshold. this built-in hysteresis obviously avoids any indeterminate on/off situations at a single voltage. start-up time the v in to v out start-up time is the interval between the time at which a ramping input voltage crosses the turn-on threshold point and the fully- loaded output voltage enters and remains within its speci ed accuracy band. actual measured times will vary with input source impedance, external input capacitance, and the slew rate and nal value of the input voltage as it appears to the converter. the on/off to v out start-up time assumes the converter is turned off via the on/off control with the nominal input voltage already applied to the converter. the speci cation de nes the interval between the time at which the converter is turned on and the fully-loaded output voltage enters and remains within its speci ed accuracy band. output power (watts) ambient temperature ( c) 15.0 13.5 12.0 10.5 9.0 7.5 6.0 4.5 3 1.5 0 ?400 404550556065707580859095100 v out = 5v, 12v and 15v v out = 3.3v d12a (10-18v) temperature derating curves output power (watts) ambient temperature ( c) 15.0 13.5 12.0 10.5 9.0 7.5 6.0 4.5 3 1.5 0 ?400 404550556065707580859095100 v in = 18v-27v v in = 18v-30v v in = 18v-36v d24a temperature derating curves for 5v, 12v and 15v output models output power (watts) ambient temperature ( c) d24a and d48a temperature derating curves for 3.3v output models 14 12 10 8 6 4 2 0 ?400 404550556065707580859095100 v in = 18v-27v (d24a) v in = 36v-48v (d48a) v in = 18v-30v (d24a) v in = 36v-60v (d48a) v in = 18v-36v (d24a) v in = 36v-75v (d48a) output power (watts) ambient temperature ( c) 15.0 13.5 12.0 10.5 9.0 7.5 6.0 4.5 3 1.5 0 ?400 404550556065707580859095100 v in = 36v-48v v in = 36v-60v v in = 36v-75v d48a temperature derating curves for 5v, 12v and 15v output models
a series 9-15w, single output dc/dc converters 90 85 80 75 70 65 60 55 50 45 uwr-3.3/4250-d12a efficiency vs. line and load load current (amps) efficiency ( % ) v in = 10v v in = 12v v in = 18v 0.4 0.9 1.4 1.8 2.3 2.8 3.3 3.8 4.3 90 85 80 75 70 65 60 55 50 45 uwr-3.3/4250-d24a efficiency vs. line and load load current ( am p s ) efficiency ( % ) v in = 18v v in = 24v v in = 36v 0.4 0.9 1.4 1.8 2.3 2.8 3.3 3.8 4.3 90 85 80 75 70 65 60 55 50 45 uwr-3.3/4250-d48a efficiency vs. line and load 0.4 0.9 1.4 1.8 2.3 2.8 3.3 3.8 4.3 load current (amps) efficiency ( % ) v in = 36v v in = 48v v in = 75v 90 85 80 75 70 65 60 55 50 45 40 uwr-5/3000-d12a efficiency vs. line and load load current (amps) efficiency ( % ) v in = 10v v in = 12v v in = 18v 0.3 0.6 1.0 1.3 1.7 2 2.3 2.7 3 90 85 80 75 70 65 60 55 50 45 40 uwr-5/3000-d24a efficiency vs. line and load load current (amps) efficiency ( % ) v in = 18v v in = 24v v in = 36v 0.3 0.6 1.0 1.3 1.7 2 2.3 2.7 3 90 85 80 75 70 65 60 55 50 45 40 uwr-5/3000-d48a efficiency vs. line and load 0.3 0.6 1.0 1.3 1.7 2 2.3 2.7 3 load current (amps) efficiency ( % ) v in = 36v v in = 48v v in = 75v efficiency vs. line and load 6
uwr models 9-15w, single output dc/dc converters 90 85 80 75 70 65 60 55 50 uwr-12/1250-d12a efficiency vs. line and load load current ( am p s ) efficiency ( % ) v in = 10v v in = 12v v in = 18v 0.1 0.2 0.4 0.5 0.7 0.8 1.0 1.1 1.3 90 85 80 75 70 65 60 55 50 uwr-12/1250-d24a efficiency vs. line and load load current (amps) efficiency ( % ) v in = 18v v in = 24v v in = 36v 0.1 0.2 0.4 0.5 0.7 0.8 1.0 1.1 1.3 90 85 80 75 70 65 60 55 50 uwr-12/1250-d48a efficiency vs. line and load 0.1 0.2 0.4 0.5 0.7 0.8 1.0 1.1 1.3 load current (amps) efficiency ( % ) v in = 36v v in = 48v v in = 75v 90 85 80 75 70 65 60 55 uwr-15/1000-d12a efficiency vs. line and load 0.1 0.2 0.3 0.4 0.6 0.7 0.8 0.9 1 load current (amps) efficiency ( % ) v in = 10v v in = 12v v in = 18v 90 85 80 75 70 65 60 55 uwr-15/1000-d24a efficiency vs. line and load load current (amps) efficiency ( % ) v in = 18v v in = 24v v in = 36v 0.1 0.2 0.3 0.4 0.6 0.7 0.8 0.9 1 90 85 80 75 70 65 60 55 uwr-15/1000-d48a efficiency vs. line and load load current (amps) efficiency ( % ) v in = 36v v in = 48v v in = 75v 0.1 0.2 0.3 0.4 0.6 0.7 0.8 0.9 1 7 efficiency vs. line and load
a series 9-15w, single output dc/dc converters 8 20mv/div, 20mhz bw output ripple and noise (pard) (v in = nominal, 12v @ 1.25a, two external 0.47f output capacitors.) output ripple and noise (pard) (v in = nominal, 15v @ 1a, two external 0.47f output capacitors.) 20mv/div, 20mhz bw 20mv/div, 20mhz bw output ripple and noise (pard) (v in = nominal, 3.3v @ 4.25a, two external 0.47f output capacitors.) 20mv/div, 20mhz bw output ripple and noise (pard) (v in = nominal, 5v @ 3a, two external 0.47f output capacitors.) datel makes no representation that the use of its products in the circuits described herein, or the use of other technical info rmation contained herein, will not infringe upon existing or future patent rights. the descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. speci? cations are subject to change without notice. the datel logo is a registered datel, inc. trademark. datel (uk) ltd. tadley, england tel: (01256)-880444 datel s.a.r.l. montigny le bretonneux, france tel: 01-34-60-01-01 datel gmbh mnchen, germany tel: 89-544334-0 datel kk tokyo, japan tel: 3-3779-1031, osaka tel: 6-6354-2025 ds-0426b 9/01 datel, inc. 11 cabot boulevard, mans? eld, ma 02048-1151 tel: (508) 339-3000 (800) 233-2765 fax: (508) 339-6356 internet: www.datel.com email: sales@datel.com data sheet fax back: (508) 261-2857 innovation and ex c ell e n c e ? ? iso-9001 registered typical performance curves
|
