basic characteristics parameter condition min. typ. max. input voltage range (2) 5vout 12vout 9vdc 17vdc 48vdc 48vdc 72vdc 72vdc short circuit input current 15ma 25ma quiescent current vin = 48vdc, 10% load 1ma 5ma internal power dissipation 0.65w operating frequency range full load 120khz 800khz effciency see selection guide minimum load (3) 10ma output ripple and noise 20mvp-p 60mvp-p continued on next page i-1 rev.: 1/2016 www.recom-power.com dc/dc converter 3 y e a r w a r r a n t y 3 specifcations (measured at t a = 25c, full load, nominal input voltage and after warm-up) description the r-78hbxx/w-series high effciency, high input voltage switching regulators are ideally suited to replace 78xx linear regulators. the effciency of up to 93% means that very little energy is wasted as heat so there is no need for any heat sinks with their additional space and mounting costs. a wide input voltage range allows the full stored energy utilization of standard 12, 24 and 36v batteries as well as cob led drivers. no external components are required to make a complete regulated, short- circuit protected supply. a built-in protection diode allows high capacitive loads. typical applications include auxiliary fan cv power supplies powered from cc led drivers, industrial, aerospace and battery powered applications. features switching regulator ? effciency up to 93%, no need for heatsinks ? high voltage input range, up to 50v ? short circuit protection, thermal shutdown ? all-in-one solution, no external components required 0.5 amp sip3 wired single output r-78hb/w selection guide part input output output effciency max. capacitive number voltage range (2) voltage current typ @ min vin. load (1) (vdc) (vdc) (a) (%) (f) r-78hb5.0-0.5/w 9-72 5.0 0.5 86 100/6800 r-78hb12-0.5/w 17-72 12 0.5 93 100/6800 iec60950-1 certifed en60950-1 certifed en55022 certifed notes: note1: with normal start-up time an no external components = 100f with <1s start-up time = 6800f typical application circuit r-78hbxx-0.5/w +v in -v in -v out +v out 3.3f/100v required if v in = >50v notes: note2: the converter has built in soft start circuit. rapidly changing the input voltage from v in min to v in max can bypass this circuit and damage the converter. note3: operation under no load will not damage the devices, however they may not meet all specifcations. a minimum load of 10ma is recommended.
i-2 rev.: 1/2016 www.recom-power.com dc/dc converter specifcations (measured at t a = 25c, full load, nominal input voltage and after warm-up) r-78hb/w series regulations parameter condition value output voltage accuracy 100% load 2% typ. / 3% max. line voltage regulation vin= min. to max., full load 0.4% typ. / 1% max. load voltage regulation 10% to 100% load 0.3% typ. / 0.6% max. dynamic load stability with 100f output capacitor, 100% <-> 50% load 75mv typ. / 100mv max. protections parameter condition value internal input filter 1f cpacaitor short circuit protection (scp) continuous, automatic recovery internal structure controller +v in gnd gnd +v out optional protection circuit effciency vs. load r-78hb12-0.5/w r-78hb5.0-0.5/w 12vin 24vin 36vin 48vin 24vin 36vin 48vin efficiency (%) output current (a) 0 84 88 92 96 100 0.1 0.3 0.2 0.4 0.5 0.6 efficiency (%) output current (a) 0 84 88 92 96 100 0.1 0.2 0.3 0.4 0.5 0.6
i-3 rev.: 1/2016 www.recom-power.com specifcations (measured at t a = 25c, full load, nominal input voltage and after warm-up) r-78hb/w series environmental parameter condition value operating temperature range with derating (see graph) -40c to +85c maximum case temperature +100c case thermal impedance 55c/w mtbf mil-hdbk 217f, +25c mil-hdbk 217f, +71c 7395 x 10 3 hours 1242 x 103 hours -40 85 71 100 80 60 40 20 0 -20 0 20 40 60 80 100 ambient temperature (c) output power (%) derating graph safety and certifications certifcate type report / file number standard iec/en general safety spclvd1407030-1 iec/en-60950-1, 2nd edition emi compliance condition standard / criterion emc conducted and radiated en55022, class b esd en61000-4-2, criteria a dimension and physical characteristics parameter type value case material potting material non-conductive black plastic (ul94v-0) epoxy (ul94v-0) package dimension (lxwxh) 12.1 x 9.7 x 24.0mm package weight 4.5g continued on next page dc/dc converter
i-4 rev.: 1/2016 www.recom-power.com dc/dc converter specifcations (measured at t a = 25c, full load, nominal input voltage and after warm-up) r-78hb/w series the product information and specifcations are subject to change without prior notice. recom products are not authorized for use in safety-critical applications (such as life support) without recoms explicit written consent. a safety-critical application is defned as an application where a failure of a recom product may reasonably be expected to endanger or cause loss of life, infict bodily harm or damage property. the buyer shall indemnify and hold harmless recom, its affliated companies and its representatives against any damage claims in connection with the unauthorized use of recom products in such safety-critical applications. packaging information packaging dimension (lxwxh) cardboard box 140.0 x 130.0 x 65.0mm packaging quantity 25pcs storage termperature range -55c to +125c storage humidity non-condensing 95%, rh max. application bottom view top view 3 2 1 9.7 12.1 24.0 955 103 0.51 r-78hb/w xxxx marking embossed logo dimension drawing (mm) r-78hb12/w 12v/100ma ac dc 1050ma 980ma 18v 70ma out led r-78 fan led driver fan constan current constan voltage standard application connection wired color type wire composition function 1, red ul-1430, awg22 17/0.16 +vin 2, black ul-1430, awg22 17/0.16 gnd 3, brown ul-1430, awg22 17/0.16 +vout tolerance: xx.x= 0.5mm xx.xx= 0.35mm insulation ?1.56 wire ?0.76 wire composition
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