the copyright and authority for the interpretation of the products are reserved by mornsun b_m-1w b/1-2012 page 1 of 4 b_m -1w series 1w, superminiature fixed input isolated & unregulated single output dc-dc converter patent protection rohs part number system b0505m-1w product series input voltage output voltage package style rated power features efficiency up to 78% super miniature sip package 1kvdc isolation operating temperature range: -40 c to +85 c low temperature rise no external component required industry standard pinout applications the b_m-1w series are designed for application where isolated output is required from a distributed power system. these products apply to where: 1) input voltage variation 10%; 2) 1kvdc input and output isolation; 3) regulated and low ripple noise is not required. such as: digital circuits and low frequency analog circuits. selection guide input voltage(vdc) output current (ma) input current (ma)(typ.) model number nominal (range) output voltage (vdc) max. min. @max. load @no load reflected ripple current (ma,typ.) max. capacitive load( f) efficiency (%, typ.) @max. load approval B0303M-1W 3.3 303 30 373 69 b0305m-1w 3.3 (3.0-3.6) 5 200 20 389 40 74 b0505m-1w 5 200 20 251 70 b0509m-1w 9 111 12 256 76 b0512m-1w 12 83 9 252 77 b0515m-1w 5 (4.5-5.5) 15 67 7 244 20 78 b1205m-1w 5 200 20 118 70 b1212m-1w 12 83 9 106 77 b1215m-1w 12 (10.8-13.2) 15 67 7 105 15 20 220 78 input specifications item test conditions min. typ. max. unit 3.3vdc input -0.7 -- 5 5vdc input -0.7 -- 9 input surge voltage (1sec. max.) 12vdc input -0.7 -- 18 vdc input filter capacitance filter output specifications item test conditions min. typ. max. unit output power 0.1 -- 1 w output voltage accuracy see tolerance envelope curve line regulation for vin change of 1% -- -- 1.2 3.3vdc output -- 12 20 5vdc output -- 10.5 15 9vdc output -- 8.3 10 12vdc output -- 6.8 10 load regulation 10% to 100% load 15vdc output -- 6.3 10 %
the copyright and authority for the interpretation of the products are reserved by mornsun b_m-1w b/1-2012 page 2 of 4 temperature drift 100% load -- -- 0.03 %/ c ripple & noise* 20mhz bandwidth -- 75 100 mvp-p short circuit protection** -- -- 1 s note: 1.* test ripple and noise by parallel cable method. see detailed operation instructions at testing of power converter section, application notes. 2.**supply voltage must be discontinued at the end of short circuit duration. common specifications item test conditions min. typ. max. unit isolation voltage tested for 1 minute and leakage current less than 1 ma 1000 -- -- vdc isolation resistance test at 500vdc 1000 -- -- m isolation capacitance input/output,100khz/1v -- 30 -- pf switching frequency full load, nominal input -- 100 -- khz mtbf mil-hdbk-217f@25 3500 -- -- k hours case material plastic (ul94-v0) weight -- 1.05 -- g environmental specifications item test conditions min. typ. max. unit storage humidity non condensing -- -- 95 % operating temperature power derating (above 85 ) -40 -- 85 storage temperature -55 -- 125 temp. rise at full load -- 25 -- lead temperature 1.5mm from case for 10 seconds -- -- 300 c cooling free air convection emc specifications emi ce cispr22/en55022 class a external circuit refer to figure1 ems esd iec/en61000-4-2 contact 8kv perf. criteria b emc recommended circuit emi recommended external circuit: vin gnd +vo 0v eut load c1 vin gnd (figure 1) recommended external circuit parameters: vin 3.3v/5v/12v c1 1 f/50v note: product bare input of 3.3v 5v 12v already meet class a, but the margin is not enough, add the capacitor margin increase. product typical curve tolerance envelope curve +10% +5% 50 100 +2.5% -2.5% -7.5% rated output voltage o u t p u t v o l t a g e ( % ) a c c u r a c y output current percent(%) t y p i c a l l o a d l i n e 70 (nominal input voltage) 120 100 80 60 40 20 0 -40 0 40 85 105120 o u t p u t p o w e r p e r c e n t ( % ) ambient temp.() temperature derating curve safe operating area
the copyright and authority for the interpretation of the products are reserved by mornsun b_m-1w b/1-2012 page 3 of 4 efficiency vs input voltage curve (full load) 0 10 20 30 40 50 60 70 80 90 100 4.6 4.7 4.8 4.9 5.0 5.1 5.2 5.3 5.4 5.5 input voltage(v) efficiency(%) b0505m-1w efficiency vs output load curve (vin=vin-nominal) 0 10 20 30 40 50 60 70 80 90 100 102030405060708090100 total output current (%) efficiency(%) b0505m-1w outline dimensions, recommended footprint & packaging mechanical dimensions recommended footprint tube outline dimensions note: unit :mm[inch] general tolerances: 0.50mm[ 0.020inch] l=530mm[20.866inch] tube quantity: 43pcs l=220mm[8.661inch] tube quantity: 17pcs footprint details pin 1 2 3 4 vin 0v +vo function gnd (bottom view) (front view) note unitmm[] pinsectiontolerances : : : inch 0.10mm[ 0.004inch] general tolerances: 0.25mm[ 0.010inch] ? 1.00[0.039] 1 2 3 4 short tube inner package dimensions: l*w*h= 255*170*80mm short tube outer package dimensions(with six inner package boxes): l*w*h= 375*280*270mm long tube inner package dimensions: l*w*h= 580*200*100mm long tube outer package dimensions(with two inner package boxes): l*w*h= 600*215*220mm long tube outer package dimensions(with three inner package boxes): l*w*h= 600*215*325mm notegrid 2.54*2.54mm : . 9.60 [0.378] 1 2 . 4 0 [ 0 . 4 8 8 ] 4.90 [0.193] 1 6 . 9 0 [ 0 . 6 6 5 ] 6 . 0 0 0 . 9 0 7.62 1 2 3 4 [0.300] [ 0 . 2 3 6 ] [ 0 . 0 3 5 ] 11.50 7 . 0 0 4 . 1 0 [0.453] [ 0 . 2 7 6 ] [ 0 . 1 6 1 ] 0 . 5 0 [ 0 . 0 2 0 ] 0 . 3 0 [ 0 . 0 1 2 ] 0.50[0.020] test configurations input reflected-ripple current test setup input reflected-ripple current is measured with an inductor lin and capacitor cin to simulate source impedance. dc cin lin dc load oscilloscope current probe lin(4.7 h) cin(220 f, esr < 1.0 at 100 khz) design considerations 1) requirement on output load to ensure this module can operate efficiently and reliably, during operation, the minimum output load could not be less than 10% of the full load. if the actual output power is very small, please connect a resistor with proper resistance at the output end in parallel to increase the load, or use our company s products with a lower rated output power (b_m-w2 series).
the copyright and authority for the interpretation of the products are reserved by mornsun b_m-1w b/1-2012 page 4 of 4 2) overload protection under normal operating conditions, the output circuit of these products has no protection against overload. the simplest method is add a circuit breaker to the circuit. 3) recommended circuit if you want to further decrease the input/output ripple, an capacitor filtering network may be connected to the input and output ends of the dc/dc converter, see (figure 2). it should also be noted that the capacitance of filter capacitor must be proper. if the capacitance is too big, a startup problem might arise. for every channel of output, provided the safe and reliable operation is ensured, the recommended capacitance of its filter capacitor sees (table 1). vin gnd +vo 0v dc cin dc cout (figure 2) external capacitor table (table 1) vin (vdc) cin ( f) vout (vdc) cout ( f) 3.3/5 4.7 3.3/5 10 12 2.2 9 4.7 -- -- 12 2.2 -- -- 15 1 it s not recommended to connect any external capacitor in the application field with less than 0.5 watt output. 4) output voltage regulation and over-voltage protection circuit the simplest device for output voltage regulation, over-voltage and over-current protection is a linear regulator and an capacitor filtering network with overheat protection that is connected to the input or output end in series (figure 3), the recommended capacitance of its filter capacitor sees (table 1), linear regulator based on the actual voltage and current to reasonable selection. vin gnd 0v +vo dc dc reg reg (figure 3) 5) cannot use in parallel and hot swap note: 1. operation under minimum load will not damage the converter; however, they may not meet all specification listed. 2. max. capacitive load tested at input voltage range and full load. 3. all date in the datasheet are measured according to nominal input voltage, rated output load, ta=25, humidity<75%, unless otherwise specified . 4. in this datasheet, all the test methods of indications are based on our corporate standards. 5. the performance in the datasheet is just fit for the part number in the selection guide, and may be different from the customer-designed product, you can get more details from mornsun fae. 6. contact us for your specific requirement. 7. specifications subject to change without prior notice. mornsun science & technology co.,ltd. address: no. 5, kehui st. 1, kehui development center, science ave., guangzhou science city, luogang district, guangzhou,p.r.china. tel: 86-20-38601850 fax:86-20-38601272 http://www.mornsun-power.com
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