mkw50 series dc/dc converter 50w, highest power density e-mail:sales@minmax.com.tw tel:886-6-2923150 2013/01/28 rev:10 page 1 of 9 ? features ? smallest encapsulated 50w converter! ? package size 2.0?x 1.0?x 0.4? ? wide 2:1 lnput range ? excellent efficiency up to 92% ? over-temperature protection ? i/o-isolation voltage 1500vdc ? remote on/off control ? shielded metal case with isolated baseplate ? heatsink (optional) ? csa/ul/iec/en 60950-1 (approval pending) ? 3 years product warranty product overview the minmax mkw50 series is the latest generation of high performance dc-dc convert er modules setting a new standard concerning power density. the product offers fully 50w in an encapsulated, shielded metal packa ge with dimensions of just 2.0?x1.0?x0.4?.all models provide w ide 2:1 input voltage range and precisely regulated output voltages. advanced circuit topology provides a very high efficiency up to 92% which allows an operating temperature range of -40c to +80 c . further features include remote on/off, trimmabl e output voltage, under-vol tage shutdown as well as overload and ove r-temperature protection. typical applications for these converters are battery operated equipment, instrumentat ion, distributed power architectures in c ommunication and industrial electronics and many other space critical applications. model selection guide output current input current efficiency (typ.) input voltage (range) output voltage max. @max. load @no load reflected ripple current over voltage protection max. capacitive load @max. load model number vdc vdc ma ma(typ.) ma(typ.) ma(typ.) vdc f % mkw50-12s033 3.3 10000 3090 85 3.9 25800 89 mkw50-12s05 5 10000 4630 110 6.2 17000 90 mkw50-12s12 12 4170 4580 160 15 2900 91 mkw50-12s15 15 3330 4580 160 18 1900 91 mkw50-12s24 12 ( 9 ~ 18 ) 24 2080 4570 250 50 30 750 91 mkw50-24s033 3.3 10000 1550 50 3.9 25800 89 mkw50-24s05 5 10000 2260 70 6.2 17000 92 mkw50-24s12 12 4170 2260 85 15 2900 92 mkw50-24s15 15 3330 2260 85 18 1900 92 mkw50-24s24 24 ( 18 ~ 36 ) 24 2080 2290 110 40 30 750 91 mkw50-48s033 3.3 10000 770 35 3.9 25800 89 mkw50-48s05 5 10000 1130 45 6.2 17000 92 mkw50-48s12 12 4170 1130 50 15 2900 92 mkw50-48s15 15 3330 1130 50 18 1900 92 MKW50-48S24 48 ( 36 ~ 75 ) 24 2080 1150 60 30 30 750 91 input specifications parameter model min. typ. max. unit 12v input models -0.7 --- 25 24v input models -0.7 --- 50 input surge voltage (100ms. max) 48v input models -0.7 --- 100 12v input models --- --- 9 24v input models --- --- 18 start-up threshold voltage 48v input models --- --- 36 12v input models --- 8.3 --- 24v input models --- 16.5 --- under voltage lockout 48v input models --- 33 --- vdc input polarity protection none power up --- --- 30 ms start up time remote on/off nominal vin and constant resistive load --- --- 30 ms internal filter type all models lc filter (for en55022,class a compliance see note 7) short circuit current --- (hiccup mode 1.5 hz typ, 24v output model:0.3 hz typ.)
mkw50 series dc/dc converter 50w, highest power density e-mail:sales@minmax.com.tw tel:886-6-2923150 2013/01/28 rev:10 page 2 of 9 ? output specifications parameter conditions min. typ. max. unit output voltage setting accuracy at 50% load and nominal vin --- --- 1.0 %vnom. line regulation vin=min. to max. @ full load --- --- 0.5 % load regulation min. load to full load --- --- 0.5 % minimum load no minimum load requirement 3.3v & 5v models (3) --- 100 --- mv p-p ripple & noise (20mhz bandwith) 12v, 15v & 24v models (3) --- 150 --- mv p-p transient recovery time 25% load step change (2) --- 250 --- sec temperature coefficient --- --- 0.02 %/ over load protection current limitation at 150% typ. of iout max., hiccup short circuit protection hi ccup automatic recovery over voltage protection for shutdown voltage see model selection guide general specifications parameter conditions min. typ. max. unit i/o isolation voltage (rated) 60 seconds 1500 --- --- vdc i/o isolation resistance 500 vdc 1000 --- --- m ? i/o isolation capacitance 100khz, 1v --- --- 2200 pf 24vo models --- 285 --- khz switching frequency other models --- 320 --- khz mtbf(calculated) mil-hdbk-217f@25 , ground benign 227,100 --- --- hours safety approvals(pending) ul/cul 60950-1 recognition(csa certificat e), iec/en 60950-1(cb-scheme) input fuse 12v input models 24v input models 48v input models 10000ma slow-blow type 5000ma slow-blow type 2500ma slow-blow type remote on/off control parameter conditions min. typ. max. unit converter on 3.5v ~ 12v or open circuit converter off 0v ~ 1.2v or short circuit control input current (on) vctrl = 5.0v --- 0.5 --- ma control input current (off) vctrl = 0v --- -0.5 --- ma control common referenced to negative input standby input current nominal vin --- 2.5 --- ma output voltage trim parameter conditions min. typ. max. unit % of nominal output voltage ( 24vo models) +20 / -10 --- --- % trim up / down range (9) % of nominal output voltage (other models) 10 --- --- % environmental specifications max. parameter model min. without heatsink with heatsink unit mkw50-xxs033 56 64 mkw50-24s05, mkw50-24s12 mkw50-24s15, mkw50-48s05 mkw50-48s12, mkw50-48s15 53 62 mkw50-12s12, mkw50-12s15 mkw50-12s24, mkw50-24s24 MKW50-48S24 46 56 operating ambient temperature range (natural convection, see derating) mkw50-12s05 -40 38 49 natural convection wit hout heatsink 12.1 --- /w natural convection with heatsink 9.8 --- /w 100lfm convection without heatsink 9.2 --- /w 100lfm convection with heatsink 5.4 --- /w 200lfm convection without heatsink 7.8 --- /w 200lfm convection with heatsink 4.5 --- /w 400lfm convection without heatsink 5.2 --- /w thermal impedance 400lfm convection with heatsink 3.0 --- /w case temperature --- +105 thermal protection shutdown temperature 110 typ. storage temperature range -50 +125 humidity (non condensing) --- 95 % rel. h rfi six-sided shielded, metal case lead temperature (1.5mm from case for 10sec.) --- 260
mkw50 series dc/dc converter 50w, highest power density e-mail:sales@minmax.com.tw tel:886-6-2923150 2013/01/28 rev:10 page 3 of 9 ? emc specifications parameter standards & level performance emi en55022 class a (see note 7) esd en61000-4-2 air 8kv , contact 6kv perf. criteria a radiated immunity en61000-4-3 10v/m perf. criteria a fast transient (see note 8) en61000-4-4 2kv perf. criteria a surge (see note 8) en61000-4-5 1kv perf. criteria a conducted immunity en61000-4-6 10v/m perf. criteria a power derating curve mkw50-12s033, mkw50-24s033, mkw50-48s033 derating curve without heatsink mkw50-12s033, mkw50-24s033, mkw50-48s033 derating curve with heatsink mkw50-24s05, mkw50-24s12, mkw50-24s15, mkw50-48s05, mkw50-48s12, mkw50-48s15 derating curve without heatsink mkw50-24s05, mkw50-24s12, mkw50-24s15, mkw50-48s05, mkw50-48s12, mkw50-48s15 derating curve with heatsink mkw50-12s12, mkw50-12s15, mkw50-12s24, mkw50-24s24, MKW50-48S24 derating curve without heatsink mkw50-12s12, mkw50-12s15, mkw50-12s24, mkw50-24s24, MKW50-48S24 derating curve with heatsink mkw50-12s05 derating curve without heatsink mkw50-12s05 derating curve with heatsink
mkw50 series dc/dc converter 50w, highest power density e-mail:sales@minmax.com.tw tel:886-6-2923150 2013/01/28 rev:10 page 4 of 9 ? efficiency curve @25 mkw50-12s033 efficiency vs load current mkw50-12s05 efficiency vs load current mkw50-12s12 efficiency vs load current mkw50-12s15 efficiency vs load current mkw50-12s24 efficiency vs load current mkw50-24s033 efficiency vs load current mkw50-24s05 efficiency vs load current mkw50-24s12 efficiency vs load current 60 65 70 75 80 85 90 95 10 20 30 40 50 60 70 80 90 100 % of full load efficiency(%) 9v 12v 18v 60 65 70 75 80 85 90 95 10 20 30 40 50 60 70 80 90 100 % of full load efficiency(%) 9v 12v 18v 60 65 70 75 80 85 90 95 10 20 30 40 50 60 70 80 90 100 % of full load efficiency(%) 9v 12v 18v 60 65 70 75 80 85 90 95 10 20 30 40 50 60 70 80 90 100 % of full load efficiency(%) 9v 12v 18v 60 65 70 75 80 85 90 95 10 20 30 40 50 60 70 80 90 100 % of full load efficiency(%) 18v 24v 36v 60 65 70 75 80 85 90 95 10 20 30 40 50 60 70 80 90 100 % of full load efficiency(%) 18v 24v 36v 60 65 70 75 80 85 90 95 10 20 30 40 50 60 70 80 90 100 % of full load efficiency(%) 18v 24v 36v 60 65 70 75 80 85 90 95 10 20 30 40 50 60 70 80 90 100 % of full load efficiency(%) 9v 12v 18v
mkw50 series dc/dc converter 50w, highest power density e-mail:sales@minmax.com.tw tel:886-6-2923150 2013/01/28 rev:10 page 5 of 9 ? efficiency curve @25 mkw50-24s15 efficiency vs load current mkw50-24s24 efficiency vs load current mkw50-48s033 efficiency vs load current mkw50-48s05 efficiency vs load current mkw50-48s12 efficiency vs load current mkw50-48s15 efficiency vs load current MKW50-48S24 efficiency vs load current 60 65 70 75 80 85 90 95 10 20 30 40 50 60 70 80 90 100 % of full load efficiency(%) 36v 48v 75v 60 65 70 75 80 85 90 95 100 10 20 30 40 50 60 70 80 90 100 % of full load efficiency(%) 18v 24v 36v 60 65 70 75 80 85 90 95 10 20 30 40 50 60 70 80 90 100 % of full load efficiency(%) 36v 48v 75v 60 65 70 75 80 85 90 95 10 20 30 40 50 60 70 80 90 100 % of full load efficiency(%) 36v 48v 75v 60 65 70 75 80 85 90 95 10 20 30 40 50 60 70 80 90 100 % of full load efficiency(%) 36v 48v 75v 60 65 70 75 80 85 90 95 10 20 30 40 50 60 70 80 90 100 % of full load efficiency(%) 36v 48v 75v 60 65 70 75 80 85 90 95 10 20 30 40 50 60 70 80 90 100 % of full load efficiency(%) 18v 24v 36v
mkw50 series dc/dc converter 50w, highest power density e-mail:sales@minmax.com.tw tel:886-6-2923150 2013/01/28 rev:10 page 6 of 9 ? notes 1 specifications typical at ta=+25 , resistive load, nominal input voltage and ra ted 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 0-20mhz, measured with a 1 f mlcc and a 10 f tantalum capatitor. 4 all dc/dc converters should be externally fused at the front end for protection. 5 other input and output voltage may be av ailable, please contact factory. 6 to order the converter with heatsink, please add a suffix -hs (e.g. mkw50-12s05-hs) to order code. 7 the mkw50 series can meet en55022 class a with paralle l an external capacitor to the input pins. (12vin: 22 f/25v 1210 mlcc, 24vin: 3.3 f/50v 1210 mlcc, 48vin: 2.2 f/100v 1210 mlcc. 8 the mkw50 series can meet en61000-4-4 & en 61000-4-5 by adding a capacitor across the i nput pins.suggested capacitor: chemi-con ky 330 f/100v. 9 do not exceed maximum power specification when adjusting output voltage. 10 that ?natural convection? is about 20lfm but is not equal to still air (0 lfm). 11 specifications are subject to change without notice.
mkw50 series dc/dc converter 50w, highest power density e-mail:sales@minmax.com.tw tel:886-6-2923150 2013/01/28 rev:10 page 7 of 9 ? package specifications mechanical dimensions pin connections pin function 1 +vin 2 -vin 3 remote on/off 4 +vout 5 -vout 6 trim ? all dimensions in mm (inches) ? tolerance: x.x0.25 (x.xx0.01) x.xx0.13 ( x.xxx0.005) ? pin diameter ? 1.0 0.05 (0.040.002) physical characteristics case size : 50.8x25.4x11mm (2.0x1.0x0.43 inches) case material : aluminium alloy, black anodized coating base material : fr4 pcb (flammability to ul 94v-0 rated) pin material : copper alloy with gold plate over nickel subplate potting material : epoxy (ul94-v0) weight : 30g heatsink (option ?hs) physical characteristics heatsink material : aluminum finish : black anodized coating weight : 9g ? the advantages of adding a heatsink are: 1. to help heat dissipation and increase the stability and reliability of dc/dc converters at high operating temperature atmosphere. 2. to upgrade the operating tem perature of dc/dc converters, please refer to derating curve. 10.16 25.4 [1.00] [0.40] 10.16 [0.40] 2.54 [0.10] 10.16 [0.40] 5.08 [0.20] bottom view 45.72 [1.80] 50.8 [2.00] 11.0 [0.43] 5.5 [0.22] 1.00 [ 0.04] 6 54 1 2 3 3.6 [0.14] 1.1 [0.04] 31.0 [1.22]max heat-sink thermal pad clamp converter 31.1 [1.22] 18.0 [0.71]max
mkw50 series dc/dc converter 50w, highest power density e-mail:sales@minmax.com.tw tel:886-6-2923150 2013/01/28 rev:10 page 8 of 9 ? external output trimming output can be externally trimmed by using the method shown below mkw50-xxs033 trim table trim down 1 2 3 4 5 6 7 8 9 10 % vout= vox0.99 vox0.98 vox0.97 vox0.96 vox0.95 vox0.94 vox0.93 vox0.92 vox0.91 vox0.90 volts rd= 63.59 30.28 18.19 11.95 8.13 5.56 3.70 2.31 1.21 0.34 kohms trim up 1 2 3 4 5 6 7 8 9 10 % vout= vox1.01 vox1.02 vox1.03 vox1.04 vox1.05 vox1.06 vox1.07 vox1.08 vox1.09 vox1.10 volts ru= 70.50 29.28 16.87 10.90 7.38 5.06 3.42 2.20 1.25 0.49 kohms mkw50-xxs05 trim table trim down 1 2 3 4 5 6 7 8 9 10 % vout= vox0.99 vox0.98 vox0.97 vox0.96 vox0.95 vox0.94 vox0.93 vox0.92 vox0.91 vox0.90 volts rd= 45.53 20.61 12.31 8.15 5.66 4.00 2.81 1.92 1.23 0.68 kohms trim up 1 2 3 4 5 6 7 8 9 10 % vout= vox1.01 vox1.02 vox1.03 vox1.04 vox1.05 vox1.06 vox1.07 vox1.08 vox1.09 vox1.10 volts ru= 36.57 16.58 9.92 6.59 4.59 3.25 2.30 1.59 1.03 0.59 kohms mkw50-xxs12 trim table trim down 1 2 3 4 5 6 7 8 9 10 % vout= vox0.99 vox0.98 vox0.97 vox0.96 vox0.95 vox0.94 vox0.93 vox0.92 vox0.91 vox0.90 volts rd= 394.50 179.74 106.08 68.86 46.39 31.36 20.60 12.51 6.21 1.17 kohms trim up 1 2 3 4 5 6 7 8 9 10 % vout= vox1.01 vox1.02 vox1.03 vox1.04 vox1.05 vox1.06 vox1.07 vox1.08 vox1.09 vox1.10 volts ru= 368.92 161.92 94.97 61.86 42.12 29.00 19.66 12.66 7.23 2.89 kohms mkw50-xxs15 trim table trim down 1 2 3 4 5 6 7 8 9 10 % vout= vox0.99 vox0.98 vox0.97 vox0.96 vox0.95 vox0.94 vox0.93 vox0.92 vox0.91 vox0.90 volts rd= 572.67 248.63 145.60 94.97 64.87 44.92 30.72 20.10 11.86 5.28 kohms trim up 1 2 3 4 5 6 7 8 9 10 % vout= vox1.01 vox1.02 vox1.03 vox1.04 vox1.05 vox1.06 vox1.07 vox1.08 vox1.09 vox1.10 volts ru= 392.98 182.12 108.73 71.43 48.85 33.71 22.86 14.69 8.33 3.23 kohms mkw50-xxs24 trim table trim down 1 2 3 4 5 6 7 8 9 10 % vout= vox0.99 vox0.98 vox0.97 vox0.96 vox0.95 vox0.94 vox0.93 vox0.92 vox0.91 vox0.90 volts rd= 318.05 146.05 85.8 55.51 37.415 25.625 16.515 9.81 4.9785 0.9185 kohms trim up 2 4 6 8 10 12 14 16 18 20 % vout= vox1.02 vox1.04 vox1.06 vox1.08 vox1.1 vox1.12 vox1.14 vox1.16 vox1.18 vox1.20 volts ru= 247.2 109.255 63.38 39.025 27.52 18.39 11.77 7.29 3.308 0.3658 kohms mkw50 module bottom view mkw50 module bottom view
mkw50 series dc/dc converter 50w, highest power density 18, sin sin road, an-ping industr ial district, tainan 702, taiwan tel: 886-6-2923150 fax: 886-6-2923149 e-mail: sales@minmax.com.tw 2013/01/28 rev:10 page 9 of 9 minmax technology co., ltd. ? test setup input reflected-ripple current test setup input reflected-ripple current is measured with a inductor lin (4.7 h) and cin (220 f, 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 t he module, measurement bandwidth is 0-500 kh z. +out -out +vin -vin dc / dc converter load battery + lin + cin to oscilloscope current probe peak-to-peak output noise measurement test use a 1 f ceramic capacitor and a 10 f tantalum 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. +out -out +vin -vin single output dc / dc converter resistive load scope copper strip cout copper strip technical notes remote on/off positive logic remote on/off turns the m odule on during a logic high voltage on the remote on/off pin, and off during a logic l ow. to turn the power module on and off, the user must supply a switch to control the voltage between the on/off terminal and the -vin terminal. the switch can be an o pen collector or equi valent. a logic low is 0v to 1.2v. a logic high is 3.5v to 12v. the maximum sink current at the on/off termi nal (pin 3) during a logic low is -100 a. overcurrent protection to provide hiccup mode protection in a faul t (output overload) condition, the unit is equipped with in ternal current limiting c ircuitry and can endure overload for an unlimited duration. overvoltage protection the output overvoltage clamp consists of control circuitry, wh ich is independent of the primary r egulation loop, that monitors the voltage on the output terminals. the control loop of the clamp has a higher voltage set point t han the primary loop. this provides a redundant voltage control that reduces the risk of output overvoltage. the ovp level can be found in the output data . input source impedance the power module should be connected to a lo w ac-impedance input source. highly inductive source impedances can affect the stab ility of the power module. in applications where power is supplied ov er long lines and output loading is high, it may be necessary to use a capacitor at t he input to ensure startup. capacitor mounted close to the power module helps ensure stabilit y of the unit, it is recommended to use a good quality low equ ivalent series resistance (esr < 1.0 at 100 khz) capacitor of a 33 f for the 12v input devices and a 10 f for the 24v and 48v devices. + +out -out +vin -vin dc / dc converter load dc power source + - cin 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 4.7 f capacitors at the output. +out -out +vin -vin load dc power source + - cout single output dc / dc converter maximum capacitive load the mkw50 series has limitation of maximum connected capacitanc e at the output. the power module may be operated in current li miting mode during start-up, affecting the ramp-up and the startup time. the maximum capacitance can be found in the data sheet. thermal considerations many conditions affect the thermal perform ance of the power module, such as orient ation, airflow over the module and board spac ing. to avoid exceeding the maximum temperature rating of the components inside the power module, the case temperature must be kept below 105 . the derating curves are determined from measurements obtained in a test setup. dut position of air velocity probe and thermocouple 50mm / 2in air flow 15mm / 0.6in
|
