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 500 vdc low cost $ MIW1100-series power modules are low-profile dc-dc converters that operat e over input voltage ranges of 4.5-9vdc, 9-18vdc, 18-36vdc and 36-75vdc and provide precisely regulated output voltages of 5v, 12v, 15v, {12v and {15v. the -40] 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 per ipheral systems and industrial robot systems. the modules have a maximum power rating of 3w and a typical full-load efficiency of 81%, cont inuous short circuit, 60ma output ripple, built-in filtering for bot h input and output minimizes the need for external filtering. y mtbf > 1,000,000 hours y emi complies with en55022 class a y short circuit protection y smt technology y industry standard pinout y i/o isolation 500vdc y 2:1 input range y high efficiency up to 81% key features single and dual outputs 3 watts 2 :1 wide input range dc/dc converters MIW1100 series
81 77 {10 {100 {15 miw1145 81 77 {12.5 {125 {12 miw1144 81 77 20 200 15 miw1143 81 77 25 250 12 miw1142 77 10 3 81 60 600 5 48 ( 36 ~ 75 ) miw1141 81 154 {10 {100 {15 miw1135 81 154 {12.5 {125 {12 miw1134 81 154 20 200 15 miw1133 81 154 25 250 12 miw1132 77 15 5 162 60 600 5 24 ( 18 ~ 36 ) miw1131 80 313 {10 {100 {15 miw1125 80 313 {12.5 {125 {12 miw1124 80 313 20 200 15 miw1123 80 313 25 250 12 miw1122 76 30 20 329 60 600 5 12 ( 9 ~ 18 ) miw1121 74 811 {10 {100 {15 miw1115 74 811 {12.5 {125 {12 miw1114 74 811 20 200 15 miw1113 74 811 25 250 12 miw1112 70 100 40 857 60 600 5 5 ( 4.5 ~ 9 ) miw1111 % (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 -40 case operating temperature ] +71 -40 ambient operating temperature unit max. min. conditions parameter environmental specifications exceeding these values can damage t he module. these are not continuous 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 vdc 11 -0.7 5vdc input models input surge voltage ( 1000 ms ) unit max. min. parameter note : 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. ripple & noise measurement bandwidth is 0-20 mhz. 4. these power converte rs require a minimum output loading to maintain specified regulation. 5. operation under no-load conditions will not damage these devices; however they may not meet all listed specifications. 6. all dc/dc converters s hould be externally fused at the front end for protection. 7. other input and output voltage may be available, please contact factory. 8. specifications subjec t to change without notice. absolute maximum ratings MIW1100 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 --- --- 550 flash tested for 1 second isolation test voltage vdc --- --- 500 60 seconds isolation voltage unit max. typ. min. conditions parameter general specifications continuous output short circuit %/] {0.02 {0.01 --- temperature coefficient % {5 {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 balance load output voltage balance % {2.0 {0.5 --- output voltage accuracy unit max. typ. min. conditions parameter output specifications pi filter input filter mw 1500 1000 --- short circuit input power a 1 --- --- all models reverse polarity input current 34 22 --- 48v input models 17 11 --- 24v input models 8.5 6.5 --- 12v input models 4 3.5 --- 5v input models under voltage shortdown 36 24 16 48v input models 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 1000 1000 2000 2000 2000 maximum capacitive load unit { 15v # { 12v # 15v 12v 5v models by vout capacitive load MIW1100 series
135ma slow - blow type 350ma slow - blow type 700ma slow - blow type 1500ma slow - blow type 48v input models 24v input models 12v input models 5v 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 5vdc input models input voltage transient rating MIW1100 series
derating curve ?
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 MIW1100 series has limitation of maximum connected capacitance 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 1000uf maximum capacitive load for dual outputs and 2000 u f capacitive load for single outputs. the maximum capacitance can be found in the data . 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 8.2uf for t he 5v input devices, a 3.3uf for 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. MIW1100 series +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 are det ermined from measurements obtained in an exper imental apparatus. MIW1100 series dut position of air velocity probe and thermocouple 50mm / 2in air flow 15mm / 0.6in
units are encapsulated in a low thermal resistance molding co mpound which has excellent chem ical resistance and electrical properties in high humidity environment and over a wide operating temperature range. the encapsulant and outer shell of the unit have ul94v-0 ratings. the leads are golden plated for better soldering. nc: no connection +vin +vin 24 -vout nc 23 common nc 22 common -vout 15 +vout +vout 14 ul94v-0 : flammability -vin -vin 13 -vin -vin 12 12.4g : weight +vout +vout 11 common -vout 10 non-conductive black plastic : case material common nc 3 -vout nc 2 1.25*0.8*0.4 inches +vin +vin 1 31.8*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 123 11 10 12 15 14 13 24 22 23 2.3 [0.09] 0.50 [0.020] 2.54 [0.100] 15.22 [0.600] 2.5 [0.10] connecting pin patterns top view ( 2.54 mm / 0.1 inch grids ) mechanical data miw 1100 series
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