dual output +vo pfm isolation ref.amp lc filter +vin -vin com. -vo single output pfm isolation ref.amp lc filter +vin -vin -vo +vo block diagram wide range 2:1 en55022 emi i/o isolation 1500 vdc low cost $ miw1500-series power modules are low-profile dc-dc converters that operate over input voltage ranges of 4.5-9vdc, 9-18vdc, 18-36vdc and provide precisely regulated output voltages of 5v, 12v, {12v and {15v. the - 25 ] to +71] operating temperature range makes it ideal for data communication equipments, mobile battery driven equipments, distributed power systems, telecommunication equipments, mixed analog/digital subsystems, process/machine control equipments, computer peripheral systems and industrial robot systems. the modules have a maximum power rating of 3w and a typical full-load efficiency of 8 2 %, continuous short circuit, 60ma output ripple, built-in filtering for both input and output minimizes the need for external filtering. ? mtbf > 1,000,000 hours ? emi complies with en55022 class a ? short circuit protection ? smt technology ? industry standard pinout ? i/o isolation 1 500vdc ? 2:1 input range ? high efficiency up to 8 2 % key features single and dual outputs 3 watts 2 :1 wide input range dc/dc converters total power int'l miw1500 series
8 2 15 2 {10 {100 {15 miw1 5 3 7 8 2 15 2 {12.5 {125 {12 miw1 5 3 6 8 2 15 2 25 250 12 miw1 5 3 3 7 8 15 5 16 0 60 600 5 24 ( 18 ~ 36 ) miw1 5 3 2 80 313 {10 {100 {15 miw1 5 2 7 80 313 {12.5 {125 {12 miw1 5 2 6 80 313 25 250 12 miw1 5 2 3 76 30 20 329 60 600 5 12 ( 9 ~ 18 ) miw1 5 2 2 7 7 779 {10 {100 {15 miw1 517 7 7 779 {12.5 {125 {12 miw1 516 7 6 789 25 250 12 miw1 5 1 3 7 2 100 40 833 60 600 5 5 ( 4.5 ~ 9 ) miw1 5 1 2 % ( typ. ) ma ( typ. ) ma ( typ. ) ma ( typ. ) ma ma vdc vdc @max. load @no load @max. load min. max. efficiency reflected ripple current input current output current output voltage input voltage model number model selection guide en55022 class a conducted emi free-air convection cooling % 95 --- humidity ] +125 -40 storage temperature ] +90 - 25 case operating temperature ] +71 -25 ambient operating temperature unit max. min. conditions parameter environmental specifications exceeding the absolute maximum ratings of the unit could cause damage. these are not continuous operating ratings. mw 2,500 --- internal power dissipation ] 260 --- lead temperature (1.5mm from case for 10 sec.) vdc 50 -0.7 24 vdc input models vdc 25 -0.7 12vdc input models vdc 11 -0.7 5 vdc input models input surge voltage ( 1000 ms ) unit max. min. parameter note : 1. specifications typical at ta = +2 5] , resistive load, nominal input voltage, rated output current unless otherwise noted. 2. transient recovery time is measured to within 1% error band for a step chang e in output load of 75% to 100%. 3. ripple & noise measurement bandwidth is 0-20 mhz. 4 . these power converters require a minimum output loading to maintain specified regulation. 5 . operation at no-load will not damage these units. however, they may not meet all specifications. 6 . all dc/dc converters should be externally fused at the front end for protection. 7 . other input and output voltage may be available, p lease contact factory. 8 . specifications subject to change without notice . absolute maximum ratings t otal power int ' l miw1500 series
k hours --- --- 1000 mil-hdbk-217f @ 25], ground benign mtbf khz --- 300 --- switching frequency pf 500 --- --- 100khz,1v isolation capacitance m[ --- --- 1000 500vdc isolation resistance vdc --- --- 16 50 flash tested for 1 second isolation voltage test vdc --- --- 1500 60 seconds isolation voltage rated unit max. typ. min. conditions parameter general specification s continuous output short circuit % /] {0.02 {0.01 --- temperature coefficient % {6 {3 --- transient response deviation us 500 300 --- 25% load step change transient recovery time % --- --- 120 over power protection mv rms. 15 --- --- ripple & noise (20mhz) mv p-p 100 --- --- over line,load & temp ripple & noise (20mhz) mv p-p 60 45 --- ripple & noise (20mhz) % {0.5 {0.2 --- io= 10 % to 100% load regulation % {0.5 {0.2 --- vin=min. to max. line regulation % {2.0 {0.5 --- dual output , balanced loads output voltage balance % {2.0 {0.5 --- output voltage accuracy unit max. typ. min. conditions parameter output specifications pi filter input filter mw 2000 1000 --- short circuit input power a 1 --- --- all models reverse polarity input current 17 11 --- 24v input models 8.5 6.5 --- 12v input models 4 3.5 --- 5v input models under voltage shutdown 18 12 8 24v input models 9 7 4.5 12v input models vdc 4.5 4 3.5 5v input models start voltage unit max. typ. min. model parameter input specifications note: # for each output . uf 220 220 470 470 maximum capacitive load unit { 15v # { 12v # 12v 5v models by vout capacitive load t otal power int ' l miw1500 series
35 0ma slow - blow type 7 00ma slow - blow type 15 00ma slow - blow type 24v input models 12v input models 5 v input models input fuse selection guide vin ( vdc ) 10us 150 140 130 120 110 100 90 80 70 60 100us 1ms 10ms 100ms 50 40 30 20 10 0 24vdc input models 12vdc input models 5vdc input models input voltage transient rating t otal power int ' l miw1500 series
derating curve ?? ] ambient temperature output power (%) 0 20 40 60 80 100 -25 50 60 80 100 110 90 70 400lfm 200lfm 100lfm natural convection efficiency vs output load ( dual output ) efficiency vs output load ( single output ) 20 30 40 50 60 70 80 90 load current (%) 100 60 40 20 10 80 efficiency (%) 20 30 40 50 60 70 80 90 efficiency (%) load current (%) 100 60 40 20 10 80 efficiency vs input voltage ( dual output ) efficiency vs input voltage ( single output ) 50 60 70 80 90 100 input voltage (v) nom low high efficiency (%) 50 60 70 80 90 100 input voltage (v) nom low high efficiency (%) t otal power int ' l miw1500 series
test configurations input reflected-ripple current test setup input reflected-ripple current is measured with a inductor lin (4.7uh) and cin (220uf, esr < 1.0[ at 100 k hz) 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 0.47 uf 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. design & feature considerations maximum capacitive load the miw1 5 00 series has limitation of maximum connected capacitance at the output. the power module may be operate d in current limiting mode during start-up, affecting the ramp-up and th e startup time. for optimum performance we recommend 220uf maximum capacitive load for dual outputs and 47 0 u f capacitive load for single outputs. the maximum capacitance can be found in the data . 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 e nsure startup. capacitor mounted close to the power module helps ensure stability of the unit, it is recommended to use a good quality low equivalent series resistance ( esr < 1.0[ at 100 k hz) capacitor of a 8.2uf for the 5v input devices, a 3.3uf for the 12v input devices and a 1.5uf for the 24v devices . 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 3.3uf capacitors at the output. +out -out +vin -vin dc / dc converter load battery + lin + cin to oscilloscope current probe +out -out +vin -vin dual output dc / dc converter resistive load scope copper strip cout com. scope cout +out -out +vin -vin single output dc / dc converter resistive load scope copper strip cout + +out -out +vin -vin dc / dc converter load dc power source + - cin +out -out +vin -vin load dc power source + - cout com. dual output dc / dc converter +out -out +vin -vin load dc power source + - cout single output dc / dc converter t otal power int ' l miw1500 series
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 90 c. the derating curves a re determined from measurements obtained in an experimental apparatus . dut position of air velocity probe and thermocouple 50mm / 2in air flow 15mm / 0.6in t otal power int ' l miw1500 series
the miw1500 converter is encapsulated in a low thermal resistance molding compound that has excellent resistance/electrical characteristics over a wide temperature range or in high humidity environments. the encapsulant and unit case are both rated to ul 94v-0 flammability specifications. leads are tin plated for improved solderability. nc: no connection +vin +vin 23 ul94v-0 : flammability +vin +vin 22 common -vout 16 1 2 .4g : weight +vout +vout 14 -vout nc 11 non-conductive black plastic : case material common no pin 9 -vin -vin 3 1. 25 * 0.8 *0. 4 inches -vin -vin 2 3 1.8 * 20. 3 * 10.2 mm : case size dual output single output pin physical characteristics pin connections {0.002 {0.05 pin .xxx{0.01 .xx{0.25 .xx{0.01 .x{0.25 inches millimeters tolerance dual output single output 31.8 [1.25] 10.2 [0.40] 20.3 [0.80] bottom 4.5 [0.18] side 2 3 11 14 22 23 16 9 0.50 [0.020] 2.54 [0.100] 15.22 [0.600] 2.5 [0.10] 4.5 [0.18] connecting pin patterns top view ( 2.54 mm / 0.1 inch grids ) mechanical d imensions t otal power int ' l miw1500 series
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