features ?high power density in sip- 8 package ? small footprint: 21.8 x 9.3 mm (0.86x 0.37) ? ultra-wide 4:1 input range ?fully regulated output ? operating temp. range -40c to +85c ?overload protection ? i/o-isolation voltage 1600 vdc ? remote on/off control ? csa/ul/iec/en 60950-1 (approval pending) ? 3 years product warranty product overview the mcwi03 series is a range of isolated 3w dc/dc converter modules featuring fully regulated output and ultra-wide 4:1 input voltage ranges. the product comes in a sip-8 package with a very small footprint occupying only 2.0 cm2 (0.3 square in.) on the pcb. an excellent efficiency allows an operating temperature range of -40c to +85c. further features include remote on/off control and over load protection. the very compact dimensions of these dc/dc converters make them an ideal solution for many space critical applications in battery-powered equipment and instrumentation. model selection guide output current input current efficiency (typ.) input voltage (range) output voltage max. min. @max. load @no load max. capacitive load @max. load model number vdc vdc ma ma ma(typ.) ma(typ.) f % mcwi03-12s033 3.3 700 175 260 1760 74 mcwi03-12s05 5 600 150 320 1000 78 mcwi03-12s12 12 250 63 313 170 80 mcwi03-12s15 15 200 50 313 110 80 MCWI03-12D05 5 300 75 313 470 # 80 mcwi03-12d12 12 125 31 313 100 # 80 mcwi03-12d15 12 (4.5 ~ 18) 15 100 25 313 60 47 # 80 mcwi03-24s033 3.3 700 175 128 1760 75 mcwi03-24s05 5 600 150 156 1000 80 mcwi03-24s12 12 250 63 154 170 81 mcwi03-24s15 15 200 50 154 110 81 mcwi03-24d05 5 300 75 158 470 # 79 mcwi03-24d12 12 125 31 156 100 # 80 mcwi03-24d15 24 (9 ~ 36) 15 100 25 154 25 47 # 81 mcwi03-48s033 3.3 700 175 65 1760 74 mcwi03-48s05 5 600 150 79 1000 79 mcwi03-48s12 12 250 63 79 170 79 mcwi03-48s15 15 200 50 79 110 79 mcwi03-48d05 5 300 75 79 470 # 79 mcwi03-48d12 12 125 31 79 100 # 79 mcwi03-48d15 48 (18 ~ 75) 15 100 25 78 15 47 # 80 # for each output t otal power in total power international, inc toll free: 877-646-0900 www.total-power.com
mcwi03 series dc/d c converter 3w , sip-pack age input specifications parameter model min. typ. max. unit 12v input models -0.7 --- 25 24v input models -0.7 --- 50 input surge voltage (1 sec. max.) 48v input models -0.7 --- 100 12v input models 3 4 4.5 24v input models 4.5 6 9 start-up threshold voltage 48v input models 8.5 12 18 12v input models --- 3.5 4 24v input models --- --- 8 under voltage shutdown 48v input models --- --- 16 vdc reverse polarity input current --- --- 1 a short circuit input power --- --- 2500 mw internal filter type capacitor type internal power dissipation all models --- --- 2600 mw o output specifications parameter conditions min. typ. max. unit output voltage setting accuracy at 50% load and nominal vin --- --- 1.0 %vom. output voltage balance dual output, balanced loads --- 0.5 2.0 % line regulation vin=min. to max. --- 0.3 0.5 % load regulation io=25% to 100% --- 0.5 1.0 % ripple & noise (20mhz) --- 50 75 mv p-p transient recovery time --- 300 500 sec transient response deviation 25% load step change --- 3 5 % temperature coefficient --- --- 0.02 %/ short circuit protection continuous o general specifications parameter conditions min. typ. max. unit i/o isolation voltage (rated) 60 seconds 1600 --- --- vdc i/o isolation resistance 500 vdc 1000 --- --- md i/o isolation capacitance 100khz, 1v --- 200 --- pf switching frequency --- 350 --- khz mtbf (calculated) mil-hdbk-217f@25 , ground benign 800,000 --- --- hours safety approvals(pending) csa 60950-1 recognition,iec/en 60950-1(cb-scheme) o input fuse 12v input models 24v input models 48v input models 1500ma slow-blow type 700ma slow-blow type 350ma slow-blow type remote on/off control parameter conditions min. typ. max. unit converter on under 0.6 vdc or open circuit, drops down to 0vdc by 2mv/ converter off 2.7 --- 15 vdc device standby input current --- 1 2.5 ma control input current ( on ) vin = 0v --- --- 1 ma control input current ( off ) vin = 5.0v --- --- 1 ma control common referenced to negative input environmental specifications parameter conditions min. max. unit operating ambient temperature range (see power derating curve) natural convection -40 +85 case temperature --- 105 storage temperature range -55 +125 humidity (non condensing) --- 95 % rel. h cooling free-air convection lead temperature (1.5mm from case for 10sec.) --- 260 t otal power in total power international, inc toll free: 877-646-0900 www.total-power.com total power international, inc.
mcwi03 series dc/d c converter 3w , sip-pack age power derating curve output power (%) notes 1 specifications typical at ta=+25 , resistive load, nominal input voltage and rated output current unless otherwise noted. 2 transient recovery time is measured to within 1% error band for a step change in output load of 75% to 100%. 3 ripple & noise measurement bandwidth is 0-20 mhz measured with a 1f m/c. 4 these power converters require a minimum output loading to maintain specified regulation, operation under no-load conditions will not damage these modules; however, they may not meet all specifications listed. 5 all dc/dc converters should be externally fused at the front end for protection. 6 other input and output voltage may be available, please contact factory. 7 that natural convection is about 20lfm but is not equal to still air (0 lfm). 8 specifications are subject to change without notice. package specifications mechanical dimensions pin connections pin single output dual output 1 -vin -vin 2 +vin +vin 3 remote on/off remote on/off 5 nc nc 6 +vout +vout 7 -vout common 8 nc -vout nc: no connection e ? all dimensions in mm (inches) ? tolerance: x.x0.5 (x.xx0.02) x.xx0.25 ( x.xxx0.01) ? pins 0.1(0.004) physical characteristics case size : 21.8x9.3x11.2 mm (0.86x0.37x0.44 inches) case mat erial : non-conductive black plastic (flammability to ul 94v-0 rated) pin material : alloy 42 weight : 4.8g 2x2.54 [2x0.10] 5.08 [0.20] [3x0.10] 3x2.54 0.5 [0.02] 0.5 [0.02] 11.2 [0.44] 3.2 [0.13] 21.8 [0.86] 20.8 [0.82] 0.50 [0.02] 0.25 [0.01] 2.7 [0.11] 9.3 [0.37] 1 2 3 5 6 7 8 bottom view 2.0 [0.08] t otal power in total power international, inc toll free: 877-646-0900 www.total-power.com total power international, inc.
mcwi03 series dc/d c converter 3w , sip-pack age test setup peak-to-peak output noise measurement test use a cout 0.47f ceramic capacitor. scope measurement should be made by using a bnc socket, measurement bandwidth is 0-20 mhz. position the load between 50 mm and 75 mm from the dc/dc converter. +out -out +vin -vin cout single output dc / dc converter copper strip copper strip scope 330pf resistive load +out -out +vin -vin cout com. dual output dc / dc converter copper strip copper strip copper strip cout scope scope 330pf resistive load technical notes remote on/off negative logic remote on/off turns the module off during a logic high voltage on the remote on/off pin, and on during a logic low. to turn the power module on and off, the user must supply a switch to control the voltage between the on/off terminal and the -vin terminal. the switch can be an open collector or equivalent. a logic high is 2.7v to 15v. a logic low is under 0.6 vdc or open circuit, drops down to 0vdc by 2mv/ . the maximum sink current at on/off terminal during a logic low is 1 ma. the maximum allowable leakage current of the switch at on/off terminal= (under 0.6vdc or open circuit) is 1ma. maximum capacitive load the mcwi03 series has 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. the maximum capacitance can be found in the data e sheet. overcurrent protection to provide protection in a fault (output overload) 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 control. the unit operates normally once the output current is brought back into its specified range. 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 applications 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 commended to use a good quality low equivalent series resistance (esr < 1.0d at 100 khz) capacitor of a 3.3f for the 12v input devices and a 1.5f for the 24v and 48v devices. + +out -out +vin -vin dc / dc converter load dc power source + - cin output ripple reduction a good quality low esr capacitor placed as close as practicable across the load will give the best ripple and noise performance. to reduce output ripple, it is recommended 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 load cout thermal considerations many conditions affect the thermal performance of the power module, such as orientation, airflow over the module and board spacing. to avoid exceeding the maximum temperature rating of the components inside the power module, the case temperature must be kept below 105 . the derating curves are determined from measurements obtained in a test setup. dut position of air velocity probe and thermocouple 50mm / 2in air flow 15mm / 0.6in t otal power in total power international, inc toll free: 877-646-0900 www.total-power.com total power international, inc.
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