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 low cost $ i/o isolation 1500 vdc low profile smd minmax's msiw1000 3w dc/dc's are in "gull-wing" smt package and meet 245]/10sec in solder-r eflow for lead free process. the series consists of 21 models t hat operate over input voltage ranges of 9-18vdc, 18-36vdc and 36-75vdc which provide precisely regulated output voltages of 3.3v, 5v, 12v, 15v, {5v, {12v and {15vdc. the -40] to +71] operating temper ature range makes it ideal for data communication equipments, mobile ba ttery driven equipments, distributed power systems, telecommunication equipments, mixed analog/digital subsystems, process/machine cont rol equipments, computer peripheral systems and industrial robot systems. the modules have a maximum power rating of 3w and a typical full-load efficiency of 83%, continuous short circui t, 50mv output ripple, built-in filtering for both input and output minimize the need for external filtering. the msiw1000 units are available in tape and reel package. y internal smd construction y ul 94v-0 package material y industry standard pinout y temperature performance -40] to +71] y short circuit protection y ul1950 safety approval y 2:1 wide input range y mtbf > 1,000,000 hours y 1500vdc isolation y efficiency up to 83% key features 3w, wide input range smd, single & dual output dc/dc converters msiw1000 series rev:0 2005/04 minmax 1
82 76 {10 {100 {15 msiw1047 82 76 {12.5 {125 {12 msiw1046 79 79 {30 {300 {5 msiw1045 83 75 20 200 15 msiw1044 83 75 25 250 12 msiw1043 80 78 60 600 5 msiw1042 76 10 3 63 70 700 3.3 48 ( 36 ~ 75 ) msiw1041 82 152 {10 {100 {15 msiw1037 82 152 {12.5 {125 {12 MSIW1036 79 158 {30 {300 {5 msiw1035 83 151 20 200 15 msiw1034 83 151 25 250 12 msiw1033 80 156 60 600 5 msiw1032 76 15 5 127 70 700 3.3 24 ( 18 ~ 36 ) msiw1031 81 309 {10 {100 {15 msiw1027 81 309 {12.5 {125 {12 msiw1026 78 321 {30 {300 {5 msiw1025 82 305 20 200 15 msiw1024 82 305 25 250 12 msiw1023 79 316 60 600 5 msiw1022 75 25 20 257 70 700 3.3 12 ( 9 ~ 18 ) msiw1021 % (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 free-air convection cooling % 95 --- humidity ] +125 -40 storage temperature ] +90 -40 case operating temperature ] +71 -40 ambient operating temperature unit max. min. conditions parameter environmental specifications exceeding the absolute maximum rati ngs of the unit could cause damage. these are not conti nuous operating ratings. mw 2,500 --- internal power dissipation ] 260 --- lead temperature (1.5mm from case for 10 sec.) vdc 100 -0.7 48vdc input models vdc 50 -0.7 24vdc input models vdc 25 -0.7 12vdc input models input surge voltage ( 1000 ms ) unit max. min. parameter notes : 1. specifications typical at ta=+25], 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 change in output load of 75% to 100%. 3. these power converte rs require a minimum output loading to maintain specified regulation. 4. operation under no-load conditions will not damage these modules; however, they may not meet all specifications listed. 5. all dc/dc converters s hould be externally fused at the front end for protection 6. other input and output voltage may be available, please contact factory. 7. specifications subjec t to change without notice. absolute maximum ratings msiw1000 series 2 minmax rev:0 2005/04
k hours --- --- 1000 mil-hdbk-217f @ 25], ground benign mtbf khz --- 300 --- switching frequency pf 100 65 --- 100khz,1v isolation capacitance m[ --- --- 1000 500vdc isolation resistance vdc --- --- 1650 flash tested for 1 second isolation voltage test vdc --- --- 1500 60 seconds isolation voltage rated unit max. typ. min. conditions parameter general specifications continuous output short circuit %/] {0.02 {0.01 --- temperature coefficient % {6 {2 --- transient response deviation us 500 200 --- 25% load step change transient recovery time % --- --- 120 over power protection mv rms 10 --- --- ripple & noise (20mhz) mv p-p 100 --- --- over line, load & temp. ripple & noise (20mhz) mv p-p 75 50 --- ripple & noise (20mhz) % {1.0 {0.3 --- io=10% to 100% load regulation % {0.3 {0.1 --- vin=min. to max. line regulation % {2.0 {0.5 --- dual output, balanced loads output voltage balance % {1.0 {0.5 --- output voltage accuracy unit max. typ. min. conditions parameter output specifications pi filter input filter mw 1500 --- --- short circuit input power a 0.5 --- --- all models reverse polarity input current 32 --- --- 48v input models 16 --- --- 24v input models 8 --- --- 12v input models under voltage shutdown 36 24 16 48v input models 18 12 8 24v input models vdc 8 6 4.5 12v input models start voltage unit max. typ. min. model parameter input specifications # for each output uf 180 180 180 4700 4700 4700 4700 maximum capacitive load unit {15v # {12v # {5v # 15v 12v 5v 3.3v models by vout capacitive load msiw1000 series rev:0 2005/04 minmax 3
200ma slow - blow type 350ma slow - blow type 750ma slow - blow type 48v input models 24v input models 12v 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 48vdc input models 24vdc input models 12vdc input models input voltage transient rating msiw1000 series 4 minmax rev:0 2005/04
derating curve ? ] ambient temperature output power (%) 0 20 40 60 80 100 -40 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 (%) efficiency (%) 100 60 40 20 10 80 20 30 40 50 60 70 80 90 load current (%) efficiency (%) 100 60 40 20 10 80 efficiency vs input voltage ( dual output ) efficiency vs input voltage ( single output ) 50 60 70 80 90 100 efficiency (%) input voltage (v) nom low high 50 60 70 80 90 100 efficiency (%) input voltage (v) nom low high msiw1000 series rev:0 2005/04 minmax 5
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 khz) 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 0.47uf 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 msiw1000 series has limitation of maximum connected capacitanc e at the output. the power module may be oper ated in current limiting mode during start-up, affecti ng the ramp-up and the startup time. for optimum performance we recommend 180uf maximum capacitive load for dual outputs and 4700 u f capacitive load for single outputs. the maximum capacitance can be found in the data sheet. overcurrent protection to provide protection in a f ault (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 incepti on, the unit shifts from voltage control to current control. t he unit operates normally once the output current is brought ba ck 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 st ability 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 recommended to use a good quality low equivalent series resistance (esr < 1.0[ at 100 khz) capacitor of a 3.3uf fo r the 12v input devices and a 1.5uf for the 24v and 48v 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. msiw1000 series 6 minmax rev:0 2005/04 +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
thermal considerations many conditions affect the thermal performance of the power module, such as orientat ion, airflow over the module and board spacing. to avoid exceeding the maximum temperature rating of t he components inside the power module, the case temperatur e must be kept below 90c. the derating curves were determined from measurements obtained in an exper imental apparatus. msiw1000 series rev:0 2005/04 minmax 7 dut position of air velocity probe and thermocouple 50mm / 2in air flow 15mm / 0.6in
nc: no connection +vin +vin 24 +vin +vin 23 nc nc 22 common -vout 15 nc nc 14 ul94v-0 : flammability +vout +vout 13 -vout nc 12 5.75g : weight nc nc 11 common nc 10 non-conductive black plastic : case material nc nc 3 -vin -vin 2 1.27*0.58*0.40 inches -vin -vin 1 32.3*14.8*10.2 mm : case size dual output single output pin physical characteristics pin connections {0.002 {0.05 pin x.xxx{0.005 x.xx{0.13 x.xx{0.01 x.x{0.25 inches millimeters tolerance 2.54mm 1.0mm 2.8mm 17.78mm 20.0mm 27.94mm 14.8 [0.58] 16.1 [0.63] 18.8 [0.74] 10.2 [0.40] 32.3 [1.27] 0.5 [0.02] 2.2 [0.09] 123 12 11 10 14 15 13 24 23 22 0.15 top side 17.82 [0.702] 2.54 [0.100] 0.5 [0.020] connecting pin patterns top view ( 2.54 mm / 0.1 inch grids ) mechanical dimensions the msiw1000 converter is encapsul ated in a low thermal resistance molding com pound that has excellent resistance/electrical characteristics over a wide temperatur e 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. msiw1000 series 8 minmax rev:0 2005/04
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