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 3:1 en55022 emi i/o isolation 1000 vdc low cost $ miw1300-series power modules are low-profile dc-dc converters that operate over an input voltage range of 10-30vdc and provide precisely regul ated output voltages of 5v and 12v in both single and dual output configurations. the -25] to +75] 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 peri pheral systems and industrial robot systems. the modules have a maximum power rating of 3w and a typical full-load efficiency of 80%, cont inuous short circuit, 60ma output ripple, built-in filtering for both 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 i/o isolation 1000vdc y smt technology y industry standard pinout y 3:1 input range y high efficiency up to 81% key features single and dual outputs 3 watts 3 :1 wide input range dc/dc converters miw1300 series
80 188 {10 {100 {15 miw1327 80 188 {12.5 {125 {12 miw1326 80 188 20 200 15 miw1324 80 188 25 250 12 miw1323 80 20 5 188 60 600 5 20 ( 10 ~ 30 ) miw1322 % (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 ] +75 -25 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 50 -0.7 input surge voltage 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 converters 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 should 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 pi filter input filter mw 1500 1000 --- short circuit input power a 1 --- --- reverse polarity input current 8.5 6.5 --- under voltage shortdown vdc 9 7 4.5 all models start voltage unit max. typ. min. model parameter input specifications miw1300 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 --- --- 1100 flash tested for 1 second isolation test voltage vdc --- --- 1000 60 seconds isolation voltage unit max. typ. min. conditions parameter general specifications continuous output short circuit %/] {0.05 {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. 28 --- --- ripple & noise (20mhz) mv p-p 80 --- --- 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 note: # for each output . uf 470 470 4000 4000 4000 maximum capacitive load unit { 15v # { 12v # 15v 12v 5v models by vout capacitive load vin ( vdc ) 10us 50 45 40 100us 1ms 10ms 100ms 35 30 25 20 15 10 input voltage transient rating 600ma slow - blow type all models input fuse selection guide miw1300 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 miw1300 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 470uf maximum capacitive load for dual outputs and 4000 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 3.3uf for the 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. miw1300 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. miw1300 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 2.0 [0.08] 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 miw1300 series
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