bothhand usa email: sales@bothhandusa.com http:// www.bothhand usa.com rev:20150827a page 1 of 7 isolated dc-dc converters mrd5 series -- 5 watt features wide 2 : 1 input voltage range(9~18v,18~36v,36~75v) input / output isolation voltage: 1.5kvdc high efficiency high power density extended operating temperature range: 55c to+95c output short circuit protection: continuous & auto recovery over voltage protection: clamp mode fixed switching frequency shielded metal case with insulated baseplate lead free design, rohs compliant industry standard pinout customer design available meet safety standard : iec / en609501 te chnical specification all specifications are typical at nominal input, full load and 25c unless otherwise stated. output current (ma) input current (ma) model number input voltage range output voltage (vdc) min. load (1) full. load no load full load eff . (2) (%) capacitive load, max. (3) (uf) mrd512s1 5 0 1000 17 555 79 1000 mrd512s2 12 0 416 21 527 83 220 mrd512d3 9~18v nominal:12vdc 15 0 167 27 543 81 47 mrd524s1 5 0 1000 9 278 79 1000 mrd524s2 12 0 416 12 267 82 200 mrd524d3 18~36v nominal:24vdc 15 0 167 15 268 82 47 mrd548s1 5 0 1000 5 139 79 1000 mrd548s2 12 0 416 7 134 82 133 mrd548d3 36~75v nominal:48vdc 15 0 167 8 134 82 47 description the mrd5 series are isolated 5w dc/dc converters. designed with highly efficiency, allow the operating temperature range of these units to be 55c to +95c in a dip package with industrystandard footprint. further features include wide 2 : 1 input voltage range, remote on/off control, shortcircuit protection and over voltage protection. applications these converters are well suitable for battery operated equipment, measurement equipment, telecom, wireless network, industry control system, everywhere where isolated, tightly regulated voltages and compact size are required.
bothhand usa email: sales@bothhandusa.com http://www.bothhandusa.com rev:20150827a page 2 of 7 isolated dc-dc converters mrd5 series -- 5 watt input specifications 12v nominal input 918v 24v nominal input 1836v input voltage 48v nominal input 3675v input filter pi type input surge voltage 12v nominal input 25v (100ms max.) 24v nominal input 50v 48 v nominal input 100v input reflected ripple current nominal vin and full load 70mapp typ. start up time nominal vin and constant resistive load 1300ms typ. reverse voltage protection 1.0a max environmental specifications operating ambient temperature 55c to +95c (with derating) maximum case temperature +100c storage temperature range 55c to +125c relative humidity 5% to 95% rh temperature coefficient 0.02% / c max. output specifications output power 5 watts max. voltage accuracy full load and nominal vin 1% minimum load see table line regulation ll to hl at full load 0.8% 25% load to full load single 1.0% balanced load dual 1.0% load regulation unbalanced load 25% to 100% full load 5% ripple and noise 20mhz bandwidth 75 mvpp max. 5vout models 6.2v 12vout models 15v over voltage protection (zener diode clamp) 15vout models 18v capacitive load see table over load protection % of full load at nominal input 150% typ. short circuit protection continuous, automatic recovery transient response settling time 50% load step change 1300us typ. transient response over shoot di/dt=0.8a/s 5% of vo general specifications efficiency nominal input see table isolation voltage input to output 1500vdc isolation resistance 500vdc 10 9 ohms min.
bothhand usa email: sales@bothhandusa.com http://www.bothhandusa.com rev:20150827a page 3 of 7 isolated dc-dc converters mrd5 series -- 5 watt isolation capacitance 580pf typ. switching frequency pulse width modulation (pwm) 300khz typ. reliability, calculated mtbf 1.19 10 6 hrs physical specifications case material nickelcoated copper base material nonconductive black plastic potting material silicon rubber (ul94v0) 1.0 1.0 0.4 inch dimensions (25.4 25.4 10.2 mm) weight 17.4g (0.62oz) typ. pow er derating curve ambient temp.ta ( ) mrd5-48s1 mrd5-48s1 input voltage vs. efficiency output current vs. efficiency input voltage (v) output current (a) output power (%) efficiency (%) efficiency (%) 45 50 55 60 65 70 75 80 85 36 40 44 48 52 56 60 64 68 75 45 50 55 60 65 70 75 80 85 0 .1 0.2 0.3 0.4 0.5 0.6 0. 7 0.8 0. 9 1 0 20 40 60 80 100 120 -55 -35 -15 5 25 45 65 85 105 125 62 95
bothhand usa email: sales@bothhandusa.com http://www.bothhandusa.com rev:20150827a page 4 of 7 isolated dc-dc converters mrd5 series -- 5 watt mrd 5-48s1 mrd5-48s1 transient response at 50%~100% max load loop gain & phase at vi=48v,full load note 1. i o below this value will not damage these converters, however, they may not meet all listed specifications. 2. typical value, tested at nominal input and full load. 3. for each output. mechanical dimensions sp e cifications subject to change without notice. pin assignment pin single dual 1 +vin +vin 2 vin vin 3 +vout +vout 4 no pin common 5 vout vout unit: mm [inch] tolerance: 0.5[0.02]
bothhand usa email: sales@bothhandusa.com http://www.bothhandusa.com rev:20150827a page 5 of 7 isolated dc-dc converters mrd5 series -- 5 watt package information ps: unit: mm [inch] l= 285 mm[11.22 inch] ; one tube = 10 pcs test configurations all specifications are typical at nominal input, full load and 25c unless otherwise stated. dc power supply: it offers a wide voltage and current range precisely. current meter (a): accuracy 200a ~ 200ma 4 ranges+ (0.2% rdg + 2 digits) 2000ma ~ 20a 2 ranges+ (0.3% rdg + 2 digits). voltage meter (v): accuracy + (0.03% rdg + 4 digits). load: at full load. wires: the resistance of the wires must be small. 1. input voltage range: narrow input voltage range 10% wide input voltage range (2:1 and 4:1 ex: narrow input voltage range 10% 5v nominal input 4.5~5.5v 12v nominal input 10.8~13.2v 24v nominal input 21.6~26.4v wide input voltage range 2:1 5v nominal input 4.5~9v 12v nominal input 9~18v 24v nominal input 18~36v 48v nominal input 36~75v wide input voltage range 4:1 (w) 24v nominal input 9~36v 48v nominal input 18~75v dc power supply a v load dc/dc converter v a dc power supply a v load dc/dc converter v a
bothhand usa email: sales@bothhandusa.com http://www.bothhandusa.com rev:20150827a page 6 of 7 isolated dc-dc converters mrd5 series -- 5 watt 2. input power : pin = vin x iin vin in put voltage iin input current 3. output power : pout = vout x iout vout ou tput voltage iout output current 4. efficiency : pout: output power pin: input power 5. voltage accuracy : vout output voltage vout(nominal) nominal output voltage 6. l ine regulation : (1) wide input voltage range and regulated output voltage series. (2) narrow input voltage range 1 0% and unregulated output voltage series. ? vout = vout(+10%)vout(10%) x100% vout vout(+10%) output voltage at vin = 1.1xvin(nominal)&full load vout(10%) output voltage at vin = 0.9xvin(nominal)&full load vout output voltage at vin = vin(nominal)&full load ? vin = vin(+10%)vin(10%) x100% vin(nominal) vin(+10%) input voltage = 1.1xvin(nominal) vin(10%) input voltage = 0.9xvin(nominal) vin(nominal) nominal input voltage 7. load regulation : vout(fl)vout(nl) x100% vout(fl) vout(fl): output voltage at full load vout(nl): output voltage at 25% full load or 10% full load voutvout(nominal) vout x1 00% efficiency = x100% pout pin vout(ll)vout(hl) vout(ll) ll: low line input voltage hl: high line input voltage 5aw ? vout ? vin
bothhand usa email: sales@bothhand usa.com http://www.bothhandusa.com rev:20150827a page 7 of 7 isolated dc-dc converters mrd5 series -- 5 watt noise ripple ripple & noise 8. ripple and noise : as shown below. the bandwidth is 020mhz. output ripple&noise measurement test circuit: as sho wn below. co: usually 0.47uf. 9. temperature derating curve : the dcdc converter will operate over a wider temperature range if less power is drawn from the output and the device is already running. the temperature derating curve shows the operating powertemperature range. as shown below. ambient temp.ta ( ) 1 0 . switching frequency : the nominal operating frequency of the dcdc converters. 11 . input to output isolation : the dielectric breakdown strength test between input and output circuits. this is the isolation voltage the device is capable of withstanding for a specified time, usually 1 second or 1 minute. load dc/dc converter oscilloscope copper strip copper strip co load dc/dc converter oscilloscope copper strip copper strip load dc/dc converter oscilloscope copper strip copper strip co output power (%) 0 20 40 60 80 100 120 -55 -35 -15 5 25 45 65 85 105 125 95 100
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