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 profile i/o isolation 1500 vdc en55022 emi low cost $ low noise mdw1000-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 36-72vdc and provide precisely regulated output voltages of 3.3v, 5v, 12v, 15v, {5v, {12v and {15v. the -40 ]+65 ] 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 pow er rating of 2 and a typical full-load efficiency of 80 ] , c ontinuous short circuit, 60mv output ripple, built-in filtering for bot h input and output minimizes the need for external filtering. y emi complies with en55022 class a y low ripple and noise y mtbf > 1,000,000 hours y short circuit protection y smt technology y industry standard pinout y i/o isolation 1500vdc y 2:1 input range y high efficiency up to 80% key features single and dual outputs 2 watts 2 :1 wide input range dc/dc converters mdw1000 series
77 57 {17 {67 {15 mdw1047 77 57 {21 {83 {12 mdw1046 71 62 {50 {200 {5 mdw1045 79 55 33 134 15 mdw1044 79 53 42 167 12 mdw1043 73 57 100 400 5 mdw1042 71 10 8 49 125 500 3.3 48 ( 36 ~ 72 ) mdw1041 80 110 {17 {67 {15 mdw1037 78 112 {21 {83 {12 mdw1036 74 119 {50 {200 {5 mdw1035 81 108 33 134 15 mdw1034 80 109 42 167 12 mdw1033 77 109 100 400 5 MDW1032 72 15 10 96 125 500 3.3 24 ( 18 ~ 36 ) mdw1031 78 226 {17 {67 {15 mdw1027 78 224 {21 {83 {12 mdw1026 73 242 {50 {200 {5 mdw1025 80 220 33 134 15 mdw1024 80 209 42 167 12 mdw1023 77 217 100 400 5 mdw1022 73 25 20 184 125 500 3.3 12 ( 9 ~ 18 ) mdw1021 71 598 {17 {67 {15 mdw1017 69 615 {21 {83 {12 mdw1016 64 667 {50 {200 {5 mdw1015 73 582 33 134 15 mdw1014 75 534 42 167 12 mdw1013 73 548 100 400 5 mdw1012 70 100 40 471 125 500 3.3 5 ( 4.5 ~ 9 ) mdw1011 % (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 ] +65 -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 1,800 --- 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 50% 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 on 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 mdw1000 series
k hours --- --- 1000 mil-hdbk-217f @ 25], ground benign mtbf khz --- 300 --- switching frequency pf 420 250 --- 100khz,1v isolation capacitance m[ --- --- 1000 500vdc isolation resistance vdc --- --- 1650 flash tested for 1 second isolation test voltage vdc --- --- 1500 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 300 100 --- 25% load step change transient recovery time % --- --- 120 over power protection mv rms. 15 --- --- ripple & noise (20mhz) mv p-p 75 --- --- over line,load & temp ripple & noise (20mhz) mv p-p 50 30 --- ripple & noise (20mhz) % {0.75 {0.5 --- io=25% to 100% load regulation % {0.5 {0.3 --- vin=min. to max. line regulation % {2.0 {1.0 --- dual output balance load output voltage balance % {2.0 {1.0 --- output voltage accuracy unit max. typ. min. conditions parameter output specifications pi filter input filter mw 1500 --- --- 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 47 100 470 110 170 1000 2200 maximum capacitive load unit { 15v # { 12v # { 5v # 15v 12v 5v 3.3v models by vout capacitive load mdw1000 series
120ma slow - blow type 250ma slow - blow type 500ma slow - blow type 1000ma 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 mdw1000 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 simulated source impedance. capacitor cin, offsets possible battery impedance. current ripple is measured at the input terminals of the module, measurement bandwidth is 0-500khz. 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 mdw1000 series has limitation of maximum connected capacitanc e on the output. the power module may operate in current limiting mode during start-up, affecting the ramp-up and the startup time. for optimum performance we recommend maximum 1000 u f capacitive load for dual outputs and 4000 u f capacitive load for single outputs. connect capacitors at the point of load for best performance. 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 on the input to insure startup. by using a good quality low equivalent series resistance (esr < 1.0[ at 100 khz) capacit or of a 8.2uf for the 5v input devices, a 3.3uf for the 12v i nput devices and a 1.5uf for the 24v and 48v devices, capacitor mounted close to the power module helps ensure stability of the unit. 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 that 3.3uf capacitors are used on output. mdw1000 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 were determined from measurements obtained in an exper imental apparatus. mdw1000 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 environments and over a wide operating temperature range. the encapsulant and outer shell of the unit have ul94v-0 ratings. lead is solder plated surface to allow ease of solderability. nc:no connection. ul94v-0 : flammability +vin +vin 16 5.1g : weight -vout -vout 10 +vout +vout 9 non-conductive black plastic : case material common nc 8 nc nc 7 0.94*0.54*0.3inches -vin -vin 1 23.8*13.7*7.62 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 23.8[0.94] 7.62[0.3] 3.8[0.15] 0.5[0.02] 0.5[0.02] 2.54[0.1] 13.7[0.54] 10.16[0.4] 1 7 8 9 10 16 bottom side connecting pin patterns top view ( 2.54 mm / 0.1 inch grids ) mechanical data mdw1000 series
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