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| uei30 series 30w isolated wide-range dc/dc converters for full details go to www.murata-ps.com/rohs www.murata-ps.com www.murata-ps.com email: sales@murata-ps.com 14 dec 2009 mdc_uei series 30w.a13_long page 1 of 16 featuring a full 30 watt output in 1.8 square inches of board area, the uei series isolated dc/dc converter family offers efficient regulated dc power for printed circuit board mounting. simplified schematic gate drive opto isolation control reference, trim & error amplifier +v in +v out Cv out Cv in on/off control trim isolation barrier typical topology is shown. typical unit wide range 4:1 inputs on the 0.92" x 1.92" x 0.35" converter are either 9 to 36 volts dc (q12 models) or 18 to 75 volts dc (q48 models), ideal for battery-powered and telecom equipment. fixed output voltages from 3.3 vdc to 15 vdc are tightly regulated and may be trimmed within 10% of nominal output. applications include small instruments, computer-based systems, data com- munications equipment, remote sensor systems, vehicle and portable electronics. the uei 30w series includes full magnetic and optical isolation up to 2250 volts dc (basic insulation), q48 models. for connection to digital systems, the outputs offer fast settling to current step loads and tolerance of higher capacitive loads. excellent ripple and noise speci? cations assure compatibility to circuits using cpus, asics, programmable logic and fpgas. no minimum load is required. for systems requiring controlled startup/shutdown, an external switch, transistor or digital logic may be used to activate the remote on/off control. remote sense inputs compensate for resistive line drops at high currents. a wealth of self-protection features avoid both converter and external circuit problems. these include input undervoltage lockout and overtem- perature shutdown. the outputs current limit using the hiccup autorestart technique and the outputs may be short-circuited inde? nitely. additional features include output overvoltage and reverse conduction elimination. the synchronous recti? er forward topology offers high ef? ciency for minimal heat buildup and no fan operation. product overview features small footprint dc/dc converter, ideal for high current applications 0.92" x 1.92" x 0.35" open frame package wide range input voltages 9-36 and 18-75vdc assembly and attachment for rohs-6 hazard- ous substance compliance isolation up to 2250 vdc (basic), q48 models up to 30w total output power with overtemperature shutdown high ef? ciency synchronous recti? er forward topology stable no-load operation with no required external components C40 to +85c temperature range; see derating certi? ed to ul60950-1, csa-c22.2 no. 234, en60950-1 safety approvals extensive self-protection shut down features rohs-6 hazardous substance compliant t yp i ca l un i t contents page description, photograph, connection diagram 1 ordering guide, model numbering, soldering guidelines 2 mechanical specs, input/output pinout 3 detailed electrical speci? cations 4 application notes 6 performance data 11 $
uei30 series 30w isolated wide-range dc/dc converters www.murata-ps.com email: sales@murata-ps.com part number structure 14 dec 2009 mdc_uei series 30w.a13_long page 2 of 16 please refer to the part number structure for additional options and complete ordering part numbers. all speci? cations are at nominal line voltage and full load, +25 deg.c. unless otherwise noted. see detailed speci? cations. output capacitors are 1 f ceramic in parallel with 10 f electrolytic. input cap is 22 f, low esr. these i/o caps are necessary for our test equipment and may not be needed for your application. sense input is not included for 12 vout and higher models. sense is optional for 5 vout and lower. nominal output voltage in tenths of a volt uei30 - q48 - 050 input voltage range: q12 = 9-36v q48 = 18-75v c rohs-6 hazardous substance compliance (does not claim eu rohs exemption 7bClead in solder) - n on/off control polarity: p = positive n = negative positive p polarity is standard for q12 models and optional special order for q48 models. negative n polarity is standard for q48 models and optional special order for q12 models. note: not all model number combinations are available. contact murata power solutions. performance specifications and ordering guide part number output input ef? ciency open frame package, c80 v out (v) i out (a) power r/n (mvp-p) regulation (max.) v in nom. (v) range (v) i in , no load (ma) i in , full load (a) (w) typ. max. line load min. typ. case pinout uei30-033-q12p-c 3.3 9 29.7 25 35 0.2% 0.25% 24 9-36 130 1.39 87.3% 89% c80 p21 uei30-033-q48n-c 3.3 9 29.7 50 75 0.2% 0.25% 48 18-75 50 0.69 87% 89.5% c80 p21 UEI30-050-Q12P-C 5 6 30 35 50 0.2% 0.2% 24 9-36 130 1.4 88% 89.5% c80 p21 uei30-050-q48n-c 5 6 30 50 75 0.2% 0.2% 48 18-75 130 0.69 89.5% 91% c80 p21 uei30-120-q12p-c 12 2.5 30 60 120 0.2% 0.1% 24 9-36 75 1.4 87.5% 89% c80 p21 uei30-120-q48n-c 12 2.5 30 30 60 0.2% 0.1% 48 18-75 40 0.7 87.5% 89% c80 p21 uei30-150-q12p-c 15 2 30 40 65 0.2% 0.1% 24 9-36 95 1.4 87.5% 89% c80 p21 uei30-150-q48n-c 15 2 30 50 100 0.2% 0.1% 48 18-75 50 0.7 87.5% 89.5% c80 p21 soldering guidelines murata power solutions recommends the speci? cations below when installing these converters. these speci? cations vary dependin g on the solder type. exceeding these speci? ca- tions may cause damage to the product. your production environment may differ; therefore please thoroughly review these guideli nes with your process engineers. wave solder operations for through-hole mounted products (thmt) for sn/ag/cu based solders: for sn/pb based solders: maximum preheat temperature 115 c. maximum preheat temperature 105 c. maximum pot temperature 270 c. maximum pot temperature 250 c. maximum solder dwell time 7 seconds maximum solder dwell time 6 seconds uei30 series 30w isolated wide-range dc/dc converters www.murata-ps.com email: sales@murata-ps.com mechanical specifications 14 dec 2009 mdc_uei series 30w.a13_long page 3 of 16 physical characteristics pin material copper alloy with gold plate over nickel underplate pin diameter 0.04" (1.016mm) pin finish gold plate weight 0.53 oz (15g) electromagnetic interference en55022/cispr22 (requires external ? lter) flammability rating ul 94v-0 safety designed to meet iec/en/ul/cul 60950-1, csa-c22.2 no. 60950-1 third angle projection dimensions are in inches (mm shown for ref. only). components are shown for reference only. tolerances (unless otherwise speci?ed): .xx 0.02 (0.5) .xxx 0.010 (0.25) angles 2? input/output connections pin function p21 pin function p21 1 + vin 4 + vout 2 - vin 5 - vout 3 remote on/off* 6 trim * the remote on/off can be provided with either positive (p suf? x) or negative (n suf? x) polarity. 0.35 (8.9) 0.25 (6.4) ref 0.900 (22.86) 0.400 (10.16) 0.100 (2.54) .0300 (7.62) 0.300 (7.62) .0400 (10.16) top view pin #1 1.92 (48.8) 0.92 (23.4) 0.040 0.002 pin with 0.071 0.002 shoulder 6x at pins 1-6 mounting plane side view end view c l bottom view c l #3 #5 #1 #2 #4 #6 c l 1.800 (45.72) uei30 open frame 30w package c80 uei30 series 30w isolated wide-range dc/dc converters www.murata-ps.com email: sales@murata-ps.com 14 dec 2009 mdc_uei series 30w.a13_long page 4 of 16 input characteristics model family start-up threshold under- voltage shut- down re? ected (back) ripple current 2 input current recom- mended fuse internal input filter type reverse polarity protection remote on/off control inrush tran- sient output short circuit low line standby mode on/off current positive logic negative logic v v ma pk-pk a 2 sec ma a ma a ma p model suf? x n model suf? x uei30-033-q12p-c 9.5 8.5 30 0.05 50 3.75 1 6 l-c none, install external fuse 1 off=gnd pin or C0.7 to +1.2v max. on=open pin or +10 to +15v max. off=open pin or +10 to +15v max. on=gnd pin or C0.7 to +1.2v max. uei30-033-q48n-c 17.3 16.0* 1.89 6 UEI30-050-Q12P-C 9.5 8.0 3.75 6 uei30-050-q48n-c 17.0 16.2 1.89 6 uei30-120-q12p-c 9.5 8.3 3.75 3 6 3.5 uei30-120-q48n-c 17.0 16.5 1.85 1 4 1 uei30-150-q12p-c 9.5 8.3 80 3.72 6 uei30-150-q48n-c 16.9 16.3 50 1.83 4 *speci? ed at half load output characteristics model family v out accuracy adjustment range temperature coef? cient capacitive loading max. overvoltage protection minimum loading ov protection method ripple/noise (20 mhz bandwidth) 8 line/load regulation ef? ciency 50% load low esr <0.02 max, resistive load hiccup auto-start after fault removal % of v nom % of v nom % of v out /oc f v uei30-033-q12p-c 2 10 0.02 2,000 5.0 no magnetic feedback see ordering guide uei30-033-q48n-c 1 5.0 UEI30-050-Q12P-C 7.0 uei30-050-q48n-c 7.3 uei30-120-q12p-c 15.5 uei30-120-q48n-c 14.1 uei30-150-q12p-c 18.5 uei30-150-q48n-c 24 absolute maximum ratings input voltage q12 models volts, max. continuous 0-36 vdc to rated speci? cations volts, transient, 100 msec 50 vdc, no damage q48 models volts, max. continuous 0-75 vdc to rated speci? cations volts, transient, 100 msec 100 vdc, no damage on/off control, referred to Cvin -0.7 v. min to +15v max. input reverse polarity protection none, install external fuse output overvoltage v out nom. +20% max. output current current-limited. devices can withstand sustained short circuit without damage. the outputs are not intended to accept appreci- able reverse current. overtemperature protection device includes electronic over- temperature shutdown protection under normal operation. storage temperature -55 to +125 c. lead temperature see soldering speci? cations absolute maximum ratings absolute maximums are stress ratings. exposure of devices to greater than 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 nor recommended. maximum ratings notes the transient speci? cations indicate that sample lots were success- fully tested for 100 ms at the transient stress voltage and were not damaged. as a practical matter in your application, it is often dif? cult to determine how long an input overvoltage was applied. therefore, do not exceed the continuous voltage rating. uei30 series 30w isolated wide-range dc/dc converters www.murata-ps.com email: sales@murata-ps.com 14 dec 2009 mdc_uei series 30w.a13_long page 5 of 16 miscellaneous characteristics model family output current limit inception output short circuit protection method output short circuit current output short circuit duration (output shorted to ground) output pre-biased setup operating temperature range storage temperature range thermal protection/ shutdown relative humidity, non- condensing 98% of v out , after warmup a a oc oc oc uei30-033-q12p-c 11.5 current limiting, hiccup auto restart 0.3 max. continuous monotonic (external v out < v set ) C40 to +85oc; with derating (see notes) C55 to 125oc 115 to +85oc/ 85% rh uei30-033-q48n-c 11.2 0.3 max. UEI30-050-Q12P-C 7.9 3.0 uei30-050-q48n-c 7.0 0.3 max. uei30-120-q12p-c 4.1 1.5 uei30-120-q48n-c 3.65 0.75 uei30-150-q12p-c 3.0 0.5 uei30-150-q48n-c 3.25 0.1 max. dynamic characteristics model family dynamic load response (50-75-50% load step) start-up time switching frequency v in to v out regulated (max.) remote on/off to v out regulated (max.) sec msec msec khz uei30-033-q12p-c 120 to 2% 50 50 275 uei30-033-q48n-c 180 to 2% 280 UEI30-050-Q12P-C 80 to 2% 275 uei30-050-q48n-c 100 to 1% 275 uei30-120-q12p-c 200 to 1% 275 uei30-120-q48n-c 150 to 1% 275 uei30-150-q12p-c 150 to 1% 275 uei30-150-q48n-c 150 to 1% 275 isolation characteristics model family input to output. isolation resistance isolation capacitance insulation safety rating min min vdc m pf uei30-033-q12p-c 2000 10 1000 basic uei30-033-q48n-c 2250 1000 UEI30-050-Q12P-C 2000 1000 uei30-050-q48n-c 2250 1000 uei30-120-q12p-c 2000 1500 uei30-120-q48n-c 2250 1500 uei30-150-q12p-c 2000 1500 uei30-150-q48n-c 2250 2000 speci? cation notes: (1) all models are tested and speci? ed with external 1 f and 10 f parallel output capacitors and a 22 f external input capacitor. all capacitors are low esr types. these capacitors are necessary to accommodate our test equipment and may not be required to achieve speci? ed performance in your applications. all models are stable and regulate within spec under no-load conditions. all speci? cations are typical unless noted. general conditions for speci? cations are +25 deg.c, vin=nominal, vout=nominal, full load. adequate air? ow must be supplied for extended testing under power. (2) input back ripple current is tested and speci? ed over a 5 hz to 20 mhz bandwidth. input ? ltering is cin=33 f, 100v, cbus=220 f, 100v, lbus=12 h. (3) note that maximum power derating curves indicate an average current at nominal input voltage. at higher temperatures and/or lower air? ow, the dc/dc converter will tolerate brief full current outputs if the total rms current over time does not exceed the derating curve. all derating curves are presented at sea level altitude. be aware of reduced power dissipation with increasing density altitude. (4) refer to page 10 for mtbf values. (5) the on/off control is normally selected by a switch or an open collector or open drain transistor. but it may also be driven with external logic or by applying appropriate external voltages which are referenced to input common and do not exceed the on/off voltage speci? cations. (6) output current limiting begins when the output voltage degrades approximately 2% from the selected setting. (7) the outputs are not intended to sink appreciable reverse current. (8) output noise may be further reduced by adding an external ? lter. low voltage logic circuits may have a small voltage margin between logic zero and logic one, requiring noise suppression. use only as much output ? ltering as needed to achieve your noise requirements. excessive output capacitance can retard transient response or possibly cause instability. low esr ceramic capacitors may degrade dynamic performance. be sure to thoroughly test your system under full load with all components installed. (9) all models are fully operational and meet published speci? cations, including cold start at C40 c. (10) regulation speci? cations describe the deviation as the line input voltage or output load current is varied from a nominal midpoint value to either extreme. (11) the output overvoltage protection is automatic recovery. the overvoltage may occur either from internal failure or from an external forcing voltage as in a shared power system. (12) output overvoltage and short circuit protection is non-latching. when the overvoltage fault is removed, the converter will immediately recover. after an output overcurrent or short circuit, hiccup operation repeatedly attempts to restart the converter with a brief, full-current output. if the overcur- rent condition still exists, the restart current will be removed and then tried again. this short current pulse prevents overheating and damaging the converter. once the fault is removed, the converter immediately resumes normal operation. (13) do not exceed maximum power speci? cations when adjusting the output trim. (14) at zero output current, the output may contain low frequency components which exceed the ripple speci? cation. the output may be operated inde? nitely with no load. (15) if reverse polarity is accidentally applied to the input, to ensure reverse input protection with full output load, always connect an external input fuse in series with the +vin input. use approximately twice the full input current rating with nominal input voltage. caution: this product is not internally fused. to comply with safety agency certi? cations and to avoid injury to personnel or equipment, the user must connect an external fast-blow fuse to the input terminals. see fuse information. uei30 series 30w isolated wide-range dc/dc converters www.murata-ps.com email: sales@murata-ps.com 14 dec 2009 mdc_uei series 30w.a13_long page 6 of 16 input fusing certain applications and/or safety agencies may require fuses at the inputs of power conversion components. fuses should also be used when there is the possibility of sustained input voltage reversal which is not current-limited. for greatest safety, we recommend a fast blow fuse installed in the ungrounded input supply line. the installer must observe all relevant safety standards and regulations. for safety agency approvals, install the converter in compliance with the end-user safety standard. input reverse-polarity protection if the input voltage polarity is reversed, an internal diode will become forward biased and likely draw excessive current from the power source. if this source is not current-limited or the circuit appropriately fused, it could cause perma- nent damage to the converter. input under-voltage shutdown and start-up threshold under normal start-up conditions, converters will not begin to regulate properly until the rising input voltage exceeds and remains at the start-up threshold voltage (see speci? cations). once operating, converters will not turn off until the input voltage drops below the under-voltage shutdown limit. subsequent restart will not occur until the input voltage rises again above the start-up threshold. this built-in hysteresis prevents any unstable on/off operation at a single input voltage. users should be aware however of input sources near the under-voltage shutdown whose voltage decays as input current is consumed (such as capaci- tor inputs), the converter shuts off and then restarts as the external capacitor recharges. such situations could oscillate. to prevent this, make sure the operat- ing input voltage is well above the uv shutdown voltage at all times. start-up delay assuming that the output current is set at the rated maximum, the vin to vout start- up delay (see speci? cations) is the time interval between the point when the rising input voltage crosses the start-up threshold and the fully loaded regulated output voltage enters and remains within its speci? ed regulation band. actual measured times will vary with input source impedance, external input capacitance, input volt- age slew rate and ? nal value of the input voltage as it appears at the converter. these converters include a soft start circuit to moderate the duty cycle of the pwm controller at power up, thereby limiting the input inrush current. the on/off remote control interval from inception to v out regulated assumes that the converter already has its input voltage stabilized above the start-up threshold before the on command. the interval is measured from the on command until the output enters and remains within its speci? ed accuracy band. the speci? cation assumes that the output is fully loaded at maximum rated current. input source impedance these converters will operate to speci? cations without external components, assuming that the source voltage has very low impedance and reason- able input voltage regulation. since real-world voltage sources have ? nite impedance, performance is improved by adding external ? lter components. application notes sometimes only a small ceramic capacitor is suf? cient. since it is dif? cult to totally characterize all applications, some experimentation may be needed. note that external input capacitors must accept high speed switching currents. because of the switching nature of dc/dc converters, the input of these converters must be driven from a source with both low ac impedance and adequate dc input regulation. performance will degrade with increasing input inductance. excessive input inductance may inhibit operation. the dc input regulation speci? es that the input voltage, once operating, must never degrade below the shut-down threshold under all load conditions. be sure to use adequate trace sizes and mount components close to the converter. i/o filtering, input ripple current and output noise all models in this converter series are tested and speci? ed for input re? ected ripple current and output noise using designated external input/output compo- nents, circuits and layout as shown in the ? gures below. external input capaci- tors (c in in the ? gure) serve primarily as energy storage elements, minimizing line voltage variations caused by transient ir drops in the input conductors. users should select input capacitors for bulk capacitance (at appropriate frequencies), low esr and high rms ripple current ratings. in the ? gure below, the c bus and l bus components simulate a typical dc voltage bus. your speci? c system con? guration may require additional considerations. please note that the values of c in , l bus and c bus will vary according to the speci? c converter model. in critical applications, output ripple and noise (also referred to as periodic and random deviations or pard) may be reduced by adding ? lter elements such as multiple external capacitors. be sure to calculate component tempera- ture rise from re? ected ac current dissipated inside capacitor esr. in ? gure 3, the two copper strips simulate real-world printed circuit impedances between the power supply and its load. in order to minimize circuit errors and standard- ize tests between units, scope measurements should be made using bnc connectors or the probe ground should not exceed one half inch and soldered directly to the ? xture. floating outputs since these are isolated dc/dc converters, their outputs are ? oating with respect to their input. the essential feature of such isolation is ideal zero current flow between input and output. real-world converters however do exhibit tiny leakage currents between input and output (see speci? cations). c in v in c bus l bus c in = 33f, esr < 700m @ 100khz c bus = 220f, esr < 100m @ 100khz l bus = 12h 1 2 +input ?input current probe to oscilloscope + C + C figure 2. measuring input ripple current uei30 series 30w isolated wide-range dc/dc converters www.murata-ps.com email: sales@murata-ps.com 14 dec 2009 mdc_uei series 30w.a13_long page 7 of 16 these leakages consist of both an ac stray capacitance coupling component and a dc leakage resistance. when using the isolation feature, do not allow the isolation voltage to exceed speci? cations. otherwise the converter may be damaged. designers will normally use the negative output (-output) as the ground return of the load circuit. you can however use the positive output (+output) as the ground return to effectively reverse the output polarity. minimum output loading requirements these converters employ a synchronous recti? er design topology. all models regulate within speci? cation and are stable under no load to full load conditions. operation under no load might however slightly increase output ripple and noise. thermal shutdown to protect against thermal over-stress, these converters include thermal shut- down circuitry. if environmental conditions cause the temperature of the dc/ dcs to rise above the operating temperature range up to the shutdown tem- perature, an on-board electronic temperature sensor will power down the unit. when the temperature decreases below the turn-on threshold, the converter will automatically restart. there is a small amount of hysteresis to prevent rapid on/off cycling. caution: if you operate too close to the thermal limits, the converter may shut down suddenly without warning. be sure to thoroughly test your application to avoid unplanned thermal shutdown. temperature derating curves the graphs in the next section illustrate typical operation under a variety of condi- tions. the derating curves show the maximum continuous ambient air temperature and decreasing maximum output current which is acceptable under increasing forced air? ow measured in linear feet per minute (lfm). note that these are average measurements. the converter will accept brief increases in temperature and/or current or reduced air? ow as long as the average is not exceeded. note that the temperatures are of the ambient air? ow, not the converter itself which is obviously running at higher temperature than the outside air. also note that natural convection is de? ned as very ? ow rates which are not using fan-forced air? ow. depending on the application, natural convection is usually about 30-65 lfm but is not equal to still air (0 lfm). murata power solutions makes characterization measurements in a closed cycle wind tunnel with calibrated air? ow. we use both thermocouples and an infrared camera system to observe thermal performance. as a practical matter, it is quite dif? cult to insert an anemometer to precisely measure air? ow in most applications. sometimes it is possible to estimate the effective air? ow if you thoroughly understand the enclosure geometry, entry/exit ori? ce areas and the fan ? owrate speci? cations. caution: if you exceed these derating guidelines, the converter may have an unplanned over temperature shut down. also, these graphs are all collected near sea level altitude. be sure to reduce the derating for higher altitude. output overvoltage protection (ovp) this converter monitors its output voltage for an over-voltage condition using an on-board electronic comparator. the signal is optically coupled to the pri- mary side pwm controller. if the output exceeds ovp limits, the sensing circuit will power down the unit, and the output voltage will decrease. after a time-out period, the pwm will automatically attempt to restart, causing the output volt- age to ramp up to its rated value. it is not necessary to power down and reset the converter for the this automatic ovp-recovery restart. if the fault condition persists and the output voltage climbs to excessive levels, the ovp circuitry will initiate another shutdown cycle. this on/off cycling is referred to as hiccup mode. output fusing the converter is extensively protected against current, voltage and temperature extremes. however, your application circuit may need additional protection. in the extremely unlikely event of output circuit failure, excessive voltage could be applied to your circuit. consider using an appropriate external protection. output current limiting as soon as the output current increases to approximately its overcurrent limit, the dc/dc converter will enter a current-limiting mode. the output voltage will decrease proportionally with increases in output current, thereby maintaining a somewhat constant power output. this is commonly referred to as power limiting. current limiting inception is de? ned as the point at which full power falls below the rated tolerance. see the performance/functional speci? cations. note particularly that the output current may brie? y rise above its rated value. this enhances reliability and continued operation of your application. if the output current is too high, the converter will enter the short circuit condition. output short circuit condition when a converter is in current-limit mode, the output voltage will drop as the output current demand increases. if the output voltage drops too low, the magnetically coupled voltage used to develop pwm bias voltage will also drop, thereby shutting down the pwm controller. following a time-out period, the pwm will restart, causing the output voltage to begin rising to its appropriate value. if the short-circuit condition persists, another shutdown cycle will initi- ate. this on/off cycling is called hiccup mode. the hiccup cycling reduces the average output current, thereby preventing excessive internal temperatures. trimming the output voltage the trim input to the converter allows the user to adjust the output voltage over the rated trim range (please refer to the speci? cations). in the trim equations and circuit diagrams that follow, trim adjustments use either a trimpot or a single ? xed resistor connected between the trim input and either the +sense or Csense terminals. (on some converters, an external user-supplied precision dc voltage figure 3 C measuring output ripple and noise (pard) c1 c1 = 0.1f ceramic c2 = 10f low es load 2-3 inches (51-76mm) from module c2 r load copper strip copper strip scope +output ?output uei30 series 30w isolated wide-range dc/dc converters www.murata-ps.com email: sales@murata-ps.com 14 dec 2009 mdc_uei series 30w.a13_long page 8 of 16 may also be used for trimming). trimming resistors should have a low tempera- ture coef? cient (100 ppm/deg.c or less) and be mounted close to the converter. keep leads short. if the trim function is not used, leave the trim unconnected. with no trim, the converter will exhibit its speci? ed output voltage accuracy. there are two cautions to observe for the trim input: caution: to avoid unplanned power down cycles, do not exceed either the maximum output voltage or the maximum output power when setting the trim. be particularly careful with a trimpot. if the output voltage is excessive, the ovp circuit may inadvertantly shut down the converter. if the maximum power is exceeded, the converter may enter current limiting. if the power is exceeded for an extended period, the converter may overheat and encounter overtempera- ture shut down. caution: be careful of external electrical noise. the trim input is a senstive input to the converters feedback control loop. excessive electrical noise may cause instability or oscillation. keep external connections short to the trim input. use shielding if needed. trim equations trim up trim down uei30 series 30w isolated wide-range dc/dc converters www.murata-ps.com email: sales@murata-ps.com 14 dec 2009 mdc_uei series 30w.a13_long page 9 of 16 negative: models with negative polarity are on (enabled) when the on/off is grounded or brought to within a low voltage (see speci? cations) with respect to Cv in . the device is off (disabled) when the on/off is left open or is pulled high to +15v dc max. with respect to Cv in . dynamic control of the on/off function should be able to sink the speci- ? ed signal current when brought low and withstand appropriate voltage when brought high. be aware too that there is a ? nite time in milliseconds (see speci? cations) between 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. there are two cautions for the on/off control: caution: 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 or a relay (which can thereupon be controlled by logic). the on/off prefers to be set at approx. +15v (open pin) for the on state, assuming positive logic. caution: do not apply voltages to the on/off pin when there is no input power voltage. otherwise the converter may be permanently damaged. figure 7 C driving the on/off control pin (suggested circuit) 1 3 on/off control -input +vcc on/off enable control ground bounce protection to improve reliability, if you use a small signal transistor or other external circuit to select the remote on/off control, make sure to return the lo side directly to the Cvin power input on the dc/dc converter. to avoid ground bounce errors, do not connect the on/off return to a distant ground plane or current-carrying bus. if necessary, run a separate small return wire directly to the Cvin terminal. there is very little current (typically 1-5 ma) on the on/off control however, large current changes on a return ground plane or ground bus can accidentally trigger the converter on or off. if possible, mount the on/off transistor or other control circuit adjacent to the converter. figure 8 C on/off enable control ground bounce protection preferred location of on/off control adjacent to -vin terminal dc/dc converter install separate return wire for on/off control with remote transistor on/off control transistor do not connect control transistor through remote power bus ground plane or power return bus + vin on/off enable -vin return uei30 series 30w isolated wide-range dc/dc converters www.murata-ps.com email: sales@murata-ps.com 14 dec 2009 mdc_uei series 30w.a13_long page 10 of 16 mean time before failure (mtbf) table these ? gures use a standard mtbf probability calculation as an indication of component parts stress and life derating. the cal culaton is based on separate mtbf values for all internal parts in addition to stated environmental conditions. two mtbf values are presented. the telcordia meth od is widely used in industry, partic- ularly telecom. the united states mil-hdbk method is for military and industrial applications. please refer to a quali? ed reli ability engineer for more background. model number mtbf (hours) method [1,2] uei30-033-q12n-c 2,676,902 telcordia uei30-033-q12n-c 2,123,124 mil-hdbk uei30-033-q12p-c 2,733,781 telcordia uei30-033-q12p-c 2,142,206 mil-hdbk uei30-033-q48n-c 3,416,592 telcordia uei30-033-q48n-c 3,172,548 mil-hdbk uei30-033-q48p-c 3,427,027 telcordia uei30-033-q48p-c 3,193,652 mil-hdbk uei30-050-q12n-c 2,531,509 telcordia uei30-050-q12n-c 2,207,508 mil-hdbk UEI30-050-Q12P-C 2,554,127 telcordia UEI30-050-Q12P-C 2,229,031 mil-hdbk uei30-120-q48n-c 3,072,461 telcordia uei30-120-q48n-c 2,510,927 mil-hdbk uei30-120-q48p-c 2,900,319 telcordia uei30-120-q48p-c 2,495,846 mil-hdbk uei30-150-q48n-c 2,833,366 telcordia uei30-150-q48n-c 2,408,836 mil-hdbk uei30-150-q48p-c 2,776,615 telcordia uei30-150-q48p-c 2,421,938 mil-hdbk notes: [1] mean time before failure is calculated using the telcordia (belcore) sr-332 method 1, case 3, issue 2, ground ? xed controlled conditions, tambient=+25c, full output load, natural air convection. [2] mean time before failure is calculated using mil-hdbk-217fn2, gb ground benign, tambient=+25c, full output load, natural air convection. uei30 series 30w isolated wide-range dc/dc converters www.murata-ps.com email: sales@murata-ps.com 14 dec 2009 mdc_uei series 30w.a13_long page 11 of 16 performance data ef? ciency vs. line voltage and load current @ 25c ef? ciency vs. line voltage and load current @ 25c uei30-033-q12 uei30-033-q48 uei30-033-q48 maximum current temperature derating @sea level (v in = 12v, air? ow is from input to output) maximum current temperature derating @sea level (v in = 24v, air? ow is from input to output) maximum current temperature derating @sea level (v in = 48v, air? ow is from input to output) 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 7 7.2 7.4 7.6 7.8 8 8.2 8.4 8.6 8.8 9 natural convection 100 lfm 200 lfm 300 lfm 400 lfm output current (amps) ambient temperature (oc) 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 8.5 8.6 8.7 8.8 8.9 9 9.1 natural convection 100 lfm 200 lfm output current (amps) ambient temperature (oc) 9 8.5 8.6 8.7 8.8 8.9 9.1 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 natural convection 100 lfm 200 lfm output current (amps) ambient temperature (oc) 60 65 70 75 80 85 90 123456789 0 vin = 24 v vin = 36 v vin = 9 v vin = 12 v load current (amps) ef?ciency (%) 20 30 40 50 60 70 80 90 100 123456789 0 vin = 48 v vin = 75 v vin = 18 v vin = 24 v load current (amps) ef?ciency (%) uei30 series 30w isolated wide-range dc/dc converters www.murata-ps.com email: sales@murata-ps.com 14 dec 2009 mdc_uei series 30w.a13_long page 12 of 16 performance data ef? ciency vs. line voltage and load current @ 25c uei30-050-q12 maximum current temperature derating @sea level (v in = 12 or 24v, air? ow is from input to output) 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 5.50 5.60 5.70 5.80 5.90 6.00 6.10 natural convection output current (amps) ambient temperature (oc) 0 1.00 2.00 3.00 4.00 5.00 6.00 20 30 40 50 60 70 80 90 100 vin = 24 v vin = 36 v vin = 10 v vin = 12 v load current (amps) ef?ciency (%) ef? ciency vs. line voltage and load current @ 25c maximum current temperature derating @sea level (v in = 18v, transverse air? ow) uei30-050-q48 uei30-050-q48 maximum current temperature derating @sea level (v in = 48v, transverse air? ow) maximum current temperature derating @sea level (v in = 24v, transverse air? ow) 0 1.00 2.00 3.0 0 4.00 5.00 6.00 20 30 40 50 60 70 80 90 100 vin = 48 v vin = 75 v vin = 18 v vin = 24 v load current (amps) ef?ciency (%) 5.5 5.6 5.7 5.8 5.9 6.0 6.1 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 natural convection 100 lfm 200 lfm 300 lfm output current (amps) ambient temperature (oc) 5.5 5.6 5.7 5.8 5.9 6.0 6.1 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 natural convection output current (amps) ambient temperature (oc) 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 5.5 5.6 5.7 5.8 5.9 6.0 6.1 natural convection 100 lfm output current (amps) ambient temperature (oc) uei30 series 30w isolated wide-range dc/dc converters www.murata-ps.com email: sales@murata-ps.com 14 dec 2009 mdc_uei series 30w.a13_long page 13 of 16 performance data ef? ciency vs. line voltage and load current @ 25c uei30-120-q12 power dissipation vs. load current @ 25c maximum current temperature derating @sea level (v in = 36v, transverse air? ow) uei30-120-q12 maximum current temperature derating @sea level (v in = 9-24v, transverse air? ow) 0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 68 70 72 74 76 78 80 82 84 86 88 90 vin = 24 v vin = 36 v vin = 9 v vin = 12 v load current (amps) ef?ciency (%) 0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 vin = 24 v vin = 36 v vin = 9 v vin = 12 v load current (amps) power dissipation (watts) 20 25 30 35 40 45 50 55 60 65 70 75 80 85 2.30 2.35 2.40 2.45 2.50 2.55 100 lfm output current (amps) ambient temperature (oc) 2.20 2.25 2.30 2.35 2.40 2.45 2.50 2.55 20 25 30 35 40 45 50 55 60 65 70 75 80 85 100 lfm 200 lfm output current (amps) ambient temperature (oc) uei30 series 30w isolated wide-range dc/dc converters www.murata-ps.com email: sales@murata-ps.com 14 dec 2009 mdc_uei series 30w.a13_long page 14 of 16 performance data ef? ciency vs. line voltage and load current @ 25c uei30-120-q48 power dissipation vs. load current @ 25c maximum current temperature derating @sea level (v in = 75v, transverse air? ow) uei30-120-q48 maximum current temperature derating @sea level (v in = 18-48v, transverse air? ow) 0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 68 70 72 74 76 78 80 82 84 86 88 90 vin = 48 v vin = 75 v vin = 18 v vin = 24 v load current (amps) ef?ciency (%) 0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 vin = 48v vin = 75v vin = 18v vin = 24v load current (amps) power dissipation (watts) 20 25 30 35 40 45 50 55 60 65 70 75 80 85 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 100 lfm output current (amps) ambient temperature (oc) 20 25 30 35 40 45 50 55 60 65 70 75 80 85 2.20 2.25 2.30 2.35 2.40 2.45 2.50 2.55 2.60 100 lfm 200 lfm output current (amps) ambient temperature (oc) uei30 series 30w isolated wide-range dc/dc converters www.murata-ps.com email: sales@murata-ps.com 14 dec 2009 mdc_uei series 30w.a13_long page 15 of 16 performance data ef? ciency vs. line voltage and load current @ 25c uei30-150-q12 power dissipation vs. load current @ 25c uei30-150-q12 maximum current temperature derating @sea level (v in = 36v, transverse air? ow) maximum current temperature derating @sea level (v in = 9-24v, transverse air? ow) 0.4 0.5 0.7 0.9 1.0 1.2 1.4 1.5 1.7 1.8 2.0 68 70 72 74 76 78 80 82 84 86 88 90 vin = 24 v vin = 36 v vin = 9 v vin = 12 v load current (amps) ef?ciency (%) 0.4 0.5 0.7 0.9 1.0 1.2 1.4 1.5 1.7 1.8 2.0 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 load current (amps) power dissipation (watts) vin = 24 v vin = 36 v vin = 9 v vin = 12 v 20 25 30 35 40 45 50 55 60 65 70 75 80 85 1.80 1.85 1.90 1.95 2.00 2.05 100 lfm output current (amps) ambient temperature (oc) 20 25 30 35 40 45 50 55 60 65 70 75 80 85 1.80 1.85 1.90 1.95 2.00 2.05 100 lfm 200 lfm 300 lfm output current (amps) ambient temperature (oc) uei30 series 30w isolated wide-range dc/dc converters murata power solutions, inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. the descriptions contained her ein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. speci? cations are subject to cha nge without notice. ? 2009 murata power solutions, inc. www.murata-ps.com/locations email: sales@murata-ps.com murata power solutions, inc. 11 cabot boulevard, mans? eld, ma 02048-1151 u.s.a. iso 9001 and 14001 registered 14 dec 2009 mdc_uei series 30w.a13_long page 16 of 16 performance data ef? ciency vs. line voltage and load current @ 25c uei30-150-q48 power dissipation vs. load current @ 25c uei30-150-q48 maximum current temperature derating @sea level (v in = 75v, transverse air? ow) maximum current temperature derating @sea level (v in = 18-48v, transverse air? ow) 0.7 0.8 1.0 1.1 1.2 1.3 1.5 1.6 1.7 1.9 2.0 72 74 76 78 80 82 84 86 88 90 92 vin = 48 v vin = 75 v vin = 18 v vin = 24 v load current (amps) ef?ciency (%) 0.7 0.8 1.0 1.1 1.2 1.3 1.5 1.6 1.7 1.9 2. 0 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 vin = 48v vin = 75v vin = 18v vin = 24v load current ( am p s ) power dissipation (watts) 20 25 30 35 40 45 50 55 60 65 70 75 80 85 1.0 1.2 1.4 1.6 1.8 2.0 2.2 natural convection output current (amps) ambient temperature (oc) 20 25 30 35 40 45 50 55 60 65 70 75 80 85 1.0 1.2 1.4 1.6 1.8 2.0 2.2 100 lfm 200 lfm 300 lfm output current (amps) ambient temperature (oc) |
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