mornsun reserves the copyright specifications subject to change without notice. b_js-2w a/2-2012 page 1 of 2 b_js-2w 2w,fixed input, isolated & unregulated single output sip package dc-dc converter rohs features product program input output voltage (vdc) current (ma) part number nominal range voltage (vdc) max min efficiency (%, typ.) B0505JS-2W 5 4.5-5.5 5 400 40 78 b1205js-2w 5 400 40 78 b1212js-2w 12 10.8-13.2 12 167 17 80 b1515js-2w 15 13.5-16.5 15 133 14 82 isolation specifications item test conditions min typ max units isolation voltage tested for 1 minute and 1ma max 1000 vdc isolation resistance test at 500vdc 1000 m isolation capacitance 50 pf output specifications item test conditions min typ max units output power 0.2 2 w line regulation for vin change of 1% 1.2 10%to100% load (5v output) 12.8 15 load regulation 10%to100% load (12v output) 6.8 10 % output voltage accuracy see tolerance envelope graph temperature drift 100% full load 0.03 %/ c ripple &noise* 20mhz bandwidth 75 150 mvp-p switching frequency full load, nominal input 500 khz * test ripple and noise by parallel cable method. see detailed operation instructions at testing of power converter section, application notes. sip package 1000vdc isolation high power denisity temperature range: -40 c to +85 c no heat sink required no external component required industry standard pinout internal smd construction rohs compliance applications the b_js- 2w series is specially designed for applications where a single power supply is isolated from the input power supply in a di stributed power supply system on a circuit board. these products apply to: 1) where the voltage of the input power supply is fixed (voltage variation ? 10%); 2) where isolation is necessary between input and output (isolation voltage 1000vdc); 3) where t he regulation of the output voltage and the output ripple noise are not demanding. such as: purely digital circuits, ordinary low frequency analog circuits. model selection B0505JS-2W product series input voltage output voltage package style rated power 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 note: 1. all specifications measured at ta=25 c, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 2. see below recommended circuits for more details. 3. operation under minimum load will not damage the converter; however, they may not meet all specification listed, and that will reduce the life of product.
mornsun reserves the copyright specifications subject to change without notice. b_js-2w a/2-2012 page 2 of 2 common specification item test condition min typ max units storage humidity 95 % operation temperature -40 85 storage temperature -55 125 temp. rise at full load 15 25 lead temperature 1.5mm from case for 10 seconds 300 c short circuit protection* 1 s cooling free air convection case material plastic (ul94-v0) mtbf 3500 k hours weight 2.9 g *supply voltage must be discontinued at the end of short circuit duration. typical charecteristics ambient temperature c ( ) outline dimensions & pin connections 1 5 2 6 vin gnd 0v +vo 4 no pin pin function footprint details ? 1.00 [0.039] note: unit:mm[inch] pin section tolerances: 0.10mm[ 0.004inch] general tolerances: 0.25mm[ 0.010inch] mechanical dimensions recommended footprint tube outline dimensions note: unit :mm[inch] general tolerances: 0.50mm[ 0.020inch] l=530mm[20.866inch] tube quantity: 25pcs l=220mm[8.661inch] tube quantity: 10pcs (front view) (bottom view) 1 2 6 4 shorttubeinnerpackagingdimensions: l*w*h=255*170*80mm; shorttubeouterpackaging dimensions (withsixinnerpackagingboxes): l*w*h=375*280*270mm; long tubeinnerpackagingdimensions: l*w*h=580*200*100mm; long tubeouterpackagingdimensions(withtwoinnerpackagingboxes) l*w*h=600*215*220mm; long tubeouterpackagingdimensions(with threeinnerpackagingboxes) l*w*h=600*215*325mm. note: grid 2.54*2.54mm. 9.60 [0.378] 1 2 . 4 0 [ 0 . 4 8 8 ] 1 6 . 9 0 [ 0 . 6 6 5 ] 4.90 [0.193] 19.60 [0.772] 10.00 [0.394] 4.10 [0.161] 2.54 [0.100] 0.30 [0.012] 4 1 7.00 [0.276] 0.50 [0.020] 2 0.50 [0.020] 0.90 [0.035] 6 10.16 [0.400] application note requirement on output load to ensure this module can operate efficiently and reliably, a minimum load is specified for this kind of dc/dc converter in addition to a maximum load (namely full load). during operation, make sure the specified range of input voltage is not exceeded, the minimum output load could not be less than 10% of the full load . if the actual output p ower 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_js C 1w series). overload protection under normal operating conditions, the output circuit of these products has no protection against over-current and short- circuits. the simplest method is to connect a self- recovery fuse in series at the input end or add a circuit breaker to the circuit. recommended and testing circuit if you want to further decrease the input/output ripple, an lc filtering network may be connected to the input and output ends of the dc/dc converter, see (figure 1). l vin gnd +vo 0v dc cin l dc cout (figure 1) it should also be noted that the inductance and the frequency of the lc filtering network should be staggered with the dc/dc frequency to avoid mutual interference. however, the capacitance of the output filter capacitor must be proper. if the capacitanc e 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). external capacitor table(table 1) vin (vdc) cin (uf) single vo ut (vdc) cout (uf) 5 4.7 5 10 12 2.2 12 2.2 15 2.2 15 1 it s not recommend to connect any external capacitor in the application field with less than 0.5 watt output. output voltage regulation and over-voltage protection circuit the simplest device for output voltage regulation, over-voltage and over-current protection is a linear voltage regulator with overheat protection that is connected to the input or output end in series (see figure 2). vin gnd 0v +vout dc dc reg vin gnd 0v +vout dc dc reg (figure 2) no parallel connection or plug and play.
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