mjwi20 series dc/dc converter 20w , highest power density e-mail:sales@minmax.com.tw tel:886-6-2923150 2012/07/16 rev:12 page 1 of 9 ? features ? smallest encapsulated 20w converter! ? package size 1.0?x1.0?x0.4? ? ultra-wide 4:1 input range ? very high efficiency up to 90% ? operating temp. range -40c to +85c ? output voltage trimmable ? i/o-isolation voltage 1500vdc ? remote on/off control ? shielded metal case with isolated baseplate ? csa/ul/iec/en 60950-1 safety approval ? 3 years product warranty product overview the minmax mjwi20 series is a new generati on of high performance dc-dc converter modu les setting a new standard concerning powe r density. the product offers fully 20w in a shielded metal package with dimens ions of just 1.0?x1.0?x 0.4?. all models provide ultra-wide 4:1 input voltage range and tight output voltage regulation. state-of the-art circuit topology provides a very high efficien cy up to 90% which allows an operating temperature range of -40 c to +85c. further features include remote on/off, trimmable outpu t voltage as well as overl oad protection and over-t emperature pr otection. typical applications for these converters are battery operated equipment, instrumentat ion, distributed power architectures in c ommunication and industrial electronics and other space critical applications. model selection guide output current input current efficiency (typ.) input voltage (range) output voltage max. min. @max. load @no load reflected ripple current over voltage protection max. capacitive load @max. load model number vdc vdc ma ma ma(typ.) ma(typ.) ma (typ.) vdc f % mjwi20-24s033 3.3 4500 0 711 80 3.9 10300 87 mjwi20-24s05 5 4000 0 936 90 6.2 6800 89 mjwi20-24s12 12 1670 0 938 40 15 1200 89 mjwi20-24s15 15 1340 0 941 40 18 750 89 mjwi20-24s24 24 835 0 949 40 30 300 88 MJWI20-24D12 12 835 60 938 40 15 680# 89 mjwi20-24d15 24 (9 ~ 36) 15 670 50 941 40 50 18 380# 89 mjwi20-48s033 3.3 4500 0 352 40 3.9 10300 88 mjwi20-48s05 5 4000 0 468 45 6.2 6800 89 mjwi20-48s12 12 1670 0 469 25 15 1200 89 mjwi20-48s15 15 1340 0 471 25 18 750 89 mjwi20-48s24 24 835 0 474 25 30 300 88 mjwi20-48d12 12 835 60 469 25 15 680# 89 mjwi20-48d15 48 (18 ~ 75) 15 670 50 471 25 30 18 380# 89 # for each output input specifications parameter model min. typ. max. unit 24v input models -0.7 --- 50 input surge voltage (1 sec. max.) 48v input models -0.7 --- 100 24v input models --- --- 9 start-up threshold voltage 48v input models --- --- 18 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 page 8) short circuit current hiccup mode, 1.5 hz typ.
mjwi20 series dc/dc converter 20w , highest power density e-mail:sales@minmax.com.tw tel:886-6-2923150 2012/07/16 rev:12 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. output voltage balance dual ou tput, balanced loads --- --- 2.0 % single output --- --- 0.2 % line regulation vin=min. to max. dual output --- --- 0.5 % 3.3v & 5v --- --- 0.5 % single output 12v,15v & 24v --- --- 0.2 % load regulation min. load to full load dual output --- --- 1.0 % load cross regulation (dual ou tput) asymmetrical load 25%/100% full load --- --- 5.0 % ripple & noise (20mhz) 3.3v & 5v models --- 75 --- mv p-p ripple & noise (20mhz) 12v & 15v models --- 100 --- mv p-p ripple & noise (20mhz) 24v models --- 150 --- mv p-p ripple & noise (20mhz) dual output models --- 100 --- mv p-p transient recovery time 25% load step change --- 300 --- 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 --- --- 1500 pf switching frequency --- 330 --- khz mtbf(calculated) mil-hdbk-217f@25 , ground benign 346,000 --- --- hours safety approvals ul/cul 60950-1 recognition(csa certif icate), iec/en 60950-1(cb-scheme) input fuse 24v input models 48v input models 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 supply off & nominal vin --- 10 --- ma output voltage trim parameter conditions min. typ. max. unit trim up / down range % of nominal output voltage 10 --- --- %
mjwi20 series dc/dc converter 20w , highest power density e-mail:sales@minmax.com.tw tel:886-6-2923150 2012/07/16 rev:12 page 3 of 9 ? environmental specifications max. parameter model min. without heatsink with heatsink unit mjwi20-48s033 +68 +74 mjwi20-24s033 +64 +71 mjwi20-xxs05, mjwi20-xxs12 mjwi20-xxs15, mjwi20-xxd12 mjwi20-xxd15 +60 +67 operating temperature range (see power derating curves) mjwi20-xxs24 -40 +55 +63 50lfm convection without heatsink 18.2 --- /w 50lfm convection with heatsink 15.3 --- /w 100lfm convection without heatsink 13.9 --- /w 100lfm convection with heatsink 8.8 --- /w 200lfm convection without heatsink 12.1 --- /w 200lfm convection with heatsink 6.8 --- /w 400lfm convection without heatsink 9.1 --- /w thermal impedance 400lfm convection with heatsink 4.6 --- /w case temperature --- +105 storage temperature range -50 +125 humidity (non condensing) --- 95 % rel. h cooling free-air convection rfi six-sided shielded, metal case lead temperature (1.5mm from case for 10sec.) --- 260
mjwi20 series dc/dc converter 20w , highest power density e-mail:sales@minmax.com.tw tel:886-6-2923150 2012/07/16 rev:12 page 4 of 9 ? power derating curve mjwi20-48s033 derating curve without heatsink mjwi20-48s033 derating curve with heatsink mjwi20-24s033 derating curve without heatsink mjwi20-24s033 derating curve with heatsink mjwi20-xxs05, mjwi20-xxs12, mjwi20-xxs15, mjwi20-xxd12, mjwi20-xxd15 derating curve without heatsink mjwi20-xxs05, mjwi20-xxs12, mjwi20-xxs15, mjwi20-xxd12, mjwi20-xxd15 derating curve with heatsink mjwi20-xxs24 derating curve wit hout heatsink mjwi20-xxs24 dera ting curve with heatsink
mjwi20 series dc/dc converter 20w , highest power density e-mail:sales@minmax.com.tw tel:886-6-2923150 2012/07/16 rev:12 page 5 of 9 ? efficiency curve @25 mjwi20-24s033 efficiency vs load current mjwi20-24s05 efficiency vs load current mjwi20-24s12 efficiency vs load current mjwi20-24s15 efficiency vs load current MJWI20-24D12 efficiency vs load current mjwi20-24d15 efficiency vs load current mjwi20-48s033 efficiency vs load current mjwi20-48s05 efficiency vs load current 30 40 50 60 70 80 90 100 10 20 30 40 50 60 70 80 90 100 % of full load efficiency(%) 9v 24v 36v 30 40 50 60 70 80 90 100 10 20 30 40 50 60 70 80 90 100 % of full load efficiency(%) 9v 24v 36v 30 40 50 60 70 80 90 100 10 20 30 40 50 60 70 80 90 100 % of full load efficiency(%) 9v 24v 36v 30 40 50 60 70 80 90 100 10 20 30 40 50 60 70 80 90 100 % of full load efficiency(%) 9v 24v 36v 30 40 50 60 70 80 90 100 10 20 30 40 50 60 70 80 90 100 % of full load efficiency(%) 9v 24v 36v 30 40 50 60 70 80 90 100 10 20 30 40 50 60 70 80 90 100 % of full load efficiency(%) 9v 24v 36v 30 40 50 60 70 80 90 100 10 20 30 40 50 60 70 80 90 100 % of full load efficiency(%) 18v 48v 75v 30 40 50 60 70 80 90 100 10 20 30 40 50 60 70 80 90 100 % of full load efficiency(%) 18v 48v 75v
mjwi20 series dc/dc converter 20w , highest power density e-mail:sales@minmax.com.tw tel:886-6-2923150 2012/07/16 rev:12 page 6 of 9 ? efficiency curve @25 mjwi20-48s12 efficiency vs load current mjwi20-48s15 efficiency vs load current mjwi20-48d12 efficiency vs load current mjwi20-48d15 efficiency vs load current 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 20 mhz, 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 the mjwi20 series can meet en55022 class a wi th parallel an external lc filter to the input pins. please refer to test config urations on the last page. 7 to order the converter with heatsink, please add a suffix -hs (e.g. mjwi20-24s05-hs) to order code. 8 specifications are subject to change without notice. 30 40 50 60 70 80 90 100 10 20 30 40 50 60 70 80 90 100 % of full load efficiency(%) 18v 48v 75v 30 40 50 60 70 80 90 100 10 20 30 40 50 60 70 80 90 100 % of full load efficiency(%) 18v 48v 75v 30 40 50 60 70 80 90 100 10 20 30 40 50 60 70 80 90 100 % of full load efficiency(%) 18v 48v 75v 30 40 50 60 70 80 90 100 10 20 30 40 50 60 70 80 90 100 % of full load efficiency(%) 18v 48v 75v
mjwi20 series dc/dc converter 20w , highest power density e-mail:sales@minmax.com.tw tel:886-6-2923150 2012/07/16 rev:12 page 7 of 9 ? package specifications mechanical dimensions pin connections pin single output dual output 1 +vin +vin 2 -vin -vin 3 +vout +vout 4 trim common 5 -vout -vout 6 remote on/off remote on/off ? 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 : 25.4x25.4x10.16mm (1.0x1.0x0.4 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 weight : 15g heatsink (option ?hs) mechanical dimensions heatsink material: aluminum finish: anodic treatment (black) weight: 2g ? the advantages of adding a heatsink are: 1.to help heat di ssipation and increas e the stability and reliability of dc/dc converters at high operating temperature atmosphere. 2.to upgrade the operating temperature of dc/dc converters, please refer to derating curve. 5.08 [0.20] 20.3 [0.80] 25.4 [1.00] 10.16 [0.40] 10.16 [0.40] 25.4 [1.00] 6.0 [0.24] 7.62 [0.30] 1 26 3 4 5 1.00 [0.04] 2.54 [0.10] 2.54 [0.10] bottom view 10.16 0.5 [0.40 0.02 ] 17.46 [0.69] max. 16.3 [0.64] 31.0 [1.22] max. heat-sink thermal pad clamp converter
mjwi20 series dc/dc converter 20w , highest power density e-mail:sales@minmax.com.tw tel:886-6-2923150 2012/07/16 rev:12 page 8 of 9 ? emi-filter to meet en 55022, class a; fcc part 15 ,level a conducted and radiated emissions en55022 class a model component value c1 3.3 f/50v 1210 x7r mlcc mjwi20-24xxx l1 smtdr54-6r5m-jt8 c1 2.2 f/100v 1210 x7r mlcc mjwi20-48xxx l1 smtdr54-120m-jt8 external output trimming output can be externally trimmed by using the method shown below mjwi20-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 mjwi20-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 mjwi20-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 mjwi20-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 mjwi20-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= 598.89 267.94 157.63 102.47 69.38 47.31 31.56 19.74 10.54 3.19 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= 487.11 218.06 128.37 83.53 56.62 38.69 25.87 16.26 8.79 2.81 kohms 12 6 345 mjwi20 module bottom view trim up 12 6 345 mjwi20 module bottom view rd trim down ru
mjwi20 series dc/dc converter 20w , 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 2012/07/16 rev:12 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 +out -out +vin -vin dual output dc / dc converter resistive load scope copper strip cout com. scope cout copper strip 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 6) during a logic low is -500 a. the maximum allowable leakage current of a switch connected to the on/off term inal (pin 6) at logic hi gh (3.5v to 12v) is 10ma. 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 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 +out -out +vin -vin load dc power source + - cout com. dual output dc / dc converter load cout maximum capacitive load the mjwi20 series has limitation of maximum connected capacitanc e at the output. the power module may be operated in current l imiting 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
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