a: 2.5v, 3.3v, 5v and 5.1v-output models use the synchronous-rectifier conf iguration shown as above. 12v and 15v-output models employ a standard, diode-rectification architecture. +vo pwm isolation ref.amp +vin -vin -vo on/off trim ovp lc filter lc filter uvlo comparators a block diagram en55022 emi i/o isolation 1500 vdc wide range 2:1 more power high power density remote on/off protection ovp minmax's mkw5000-series power modules are low-profile dc-dc converters that operate over input voltage ranges of 18-36vdc and 36-75vdc which provide precisely regulated output voltages of 2.5v, 3.3v, 5v, 5.1v, 12v and 15vdc, specially addressing data communication equipments, mobile ba ttery driven equipments, distributed power systems, telecommunicati on equipments, mixed analog/digital subsystems, process/machine control equipments, computer peripheral systems and industrial robot systems. packing up to 30w of power into a 2x1x0.4inch package, with efficiencies as high as 88%, the mkw5000 includes continuous short circuit protection, overvoltage protection, output trim function, remote on/off, six-sided shielded case and en55022 class a conducted noise compliance minimize design-in time, cost and eliminate the need for external filtering. y output trim y over voltage protection y soft start y remote on/off control y six-sided shielding y complies with en55022 class a y ul1950 safety approval y 2:1 wide input range y mtbf > 600,000 hours y 1500vdc isolation y efficiency up to 88% key features 25-30w, wide input range, singl e output dc/dc converters mkw5000 series rev:0 2005/04 minmax 1
88 6.8 50 604 0 5000 5.1 mkw5049 88 18 10 710 133 2000 15 mkw5044 88 15 10 710 166 2500 12 mkw5043 88 6.8 50 604 0 5000 5 mkw5042 86 3.9 40 480 0 6000 3.3 mkw5041 84 3 50 40 372 0 6000 2.5 48 ( 36 ~ 75 ) mkw5040 88 6.8 70 1207 0 5000 5.1 mkw5039 88 18 20 1420 133 2000 15 mkw5034 88 15 20 1420 166 2500 12 MKW5033 88 6.8 70 1185 0 5000 5 mkw5032 86 3.9 50 959 0 6000 3.3 mkw5031 84 3 100 50 744 0 6000 2.5 24 ( 18 ~ 36 ) mkw5030 % (typ.) vdc ma (typ.) ma (typ.) ma (typ.) ma ma vdc vdc @max. load @no load @max. load min. max. efficiency over voltage protection reflected ripple current input current output current output voltage input voltage model number model selection guide en55022 class a conducted emi six-sided shielded, metal case rfi free-air convection cooling % 95 --- humidity ] +125 -50 storage temperature ] +105 -40 case operating temperature ] +50 -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 5500 --- 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 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. 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 modules; however, they may not meet all specifications listed. 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. to order the converter with remote on/off function, please add a suffix -rc (e.g. mkw5030-rc). 9.to order the converter with en55022 class a function, please add a suffix a (e.g. mkw5030a). 10. specifications subjec t to change without notice. absolute maximum ratings mkw5000 series 2 minmax rev:0 2005/04
k hours --- --- 600 mil-hdbk-217f @ 25], ground benign mtbf khz 400 350 280 switching frequency pf 1500 1200 --- 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 % {5 {2 --- transient response deviation us 500 200 --- 25% load step change transient recovery time % 160 --- 110 over power protection mv rms 10 --- --- ripple & noise (20mhz) mv p-p 120 --- --- over line, load & temp. ripple & noise (20mhz) mv p-p 100 75 --- ripple & noise (20mhz) % {1.0 {0.5 --- io=10% to 100% load regulation (12/15vout) % {1.0 {0.5 --- io=0% to 100% load regulation (2.5/3.3/5/5.1vout) % {0.3 {0.1 --- vin=min. to max. line regulation % {1.0 {0.5 --- output voltage accuracy unit max. typ. min. conditions parameter output specifications pi filter input filter mw 4500 --- --- short circuit input power a 2 --- --- all models reverse polarity input current 84 82 80 48v input models 44 42 40 24v input models over voltage shutdown 34 33 32 48v input models 17 16.5 16 24v input models under voltage shutdown 36 35 34 48v input models vdc 18 17.5 17 24v input models start voltage unit max. typ. min. model parameter input specifications referenced to negative input control common ua -100 --- --- vin-rc=0v control input current ( off ) ua 5 --- --- vin-rc=5.0v control input current ( on ) ma 5 2 --- device standby input current vdc 1 --- -1 supply off 2.5 to 100vdc or open circuit supply on unit max. typ. min. conditions parameter remote on/off control mkw5000 series rev:0 2005/04 minmax 3
uf 680 680 6800 6800 6800 6800 maximum capacitive load unit 15v 12v 5.1v 5v 3.3v 2.5v models by vout capacitive load 1500ma slow - blow type 3000ma slow - blow type 48v input models 24v input models input fuse selection guide % {11.0 {10.0 {9.0 % of nominal output voltage trim up / down range unit max. typ. min. conditions parameter output voltage trim 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 input voltage transient rating mkw5000 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 efficiency vs input voltage 20 30 40 50 60 70 80 90 100 efficiency (%) load current (%) 100 60 40 20 10 80 50 60 70 80 90 100 efficiency (%) input voltage (v) nom low high mkw5000 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 1.0uf 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 remote on/off positive logic remote on/off turns the module on during a logic high voltage on the remote on/off pin, and off during a logic low. to turn the power module on and off, the user must supply a switch to control the volt age between the on/off terminal and the -vin terminal. the switch can be an open collector or equivalent. a logic low is -1v to 1.0v. a logic high is 2.5v to 100v. the maximum sink current at the on/off terminal (pin 3) during a logic low is -100ua. the maximum allowable leakage current of a switch connected to the on/off terminal (pin 3) at logic high (2.5v to 100v) is 5ua. output voltage trim output voltage trim allows the user to increase or decrease the output voltage set point of a module. the output voltage can be adjus ted by placing an external resistor (radj) between the trim and +vout or -vout terminals. by adjusting radj, the output voltage can be change by {10% of the nominal output voltage. a 10k, 1 or 10 turn trimpot is usually specified for continuous trimming. trim pin may be safely left floating if it is not used. connecting the external resistor (radj-up) between the trim and -vout pins increases the output voltage to set the point as defined in the following equation: vadj - vout (33*vout)- (30*vadj) radj-up = connecting the external resistor (radj-down) between the trim and +vout pins decreases the output voltage set point as defined in the following equation: vout-vadj (36.667*vadj) - (33*vout) radj-down = vdc/ k[ : units adjusted output voltage : vadj nominal output voltage : vout 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. overvoltage protection the output overvoltage clamp cons ists of control circuitry, which is independent of the pr imary regulation loop, that monitors the voltage on the output terminals. the control loop of the cl amp has a higher voltage set point than the primary loop. this provides a redundant volt age control that reduces the risk of output overvoltage. the ovp level can be f ound in the output data . mkw5000 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 single output dc / dc converter resistive load scope copper strip cout +out -out +vin -vin trim up enable trim trim down 10k trim up/down
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 33uf for the 12v input devices and a 10uf 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 4.7uf capacitors at the output. maximum capacitive load the mkw5000 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 680uf maximum capacitive load for 12v & 15v outputs and 6800uf capacitive load for the other outputs. the maximum capacitance can be found in the data sheet. 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 105c. the derating curves are det ermined from measurements obtained in an exper imental apparatus. . mkw5000 series rev:0 2005/04 minmax 7 + +out -out +vin -vin dc / dc converter load dc power source + - cin +out -out +vin -vin load dc power source + - cout single output dc / dc converter dut position of air velocity probe and thermocouple 50mm / 2in air flow 15mm / 0.6in
the mkw5000 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. 32g : weight trim 6 -vout 5 +vout 4 aluminum anodizing treatment in black : case material remote on/off 3 -vin 2 2.0*1.0*0.4 inches +vin 1 50.8*25.4*10.2 mm : case size function 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 45.72 [1.8] 50.80 [2.0] 25.4 [1.0] 10.16 [0.4] 15.24 [0.6] 5.08 [0.2] 10.20 [0.4] 10.16 [0.4] 20.32 [0.8] 1 2 3 4 5 6 1.0[0.04] connecting pin patterns top view ( 2.54 mm / 0.1 inch grids ) mechanical dimensions mkw5000 series 8 minmax rev:0 2005/04
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