mornsun reserves the copyright specifications subject to change without notice. PWE4812D-3W a/0-2008 page 1 of 2 PWE4812D-3W 3w 4:1 wide input isolated & regulated dual outpu dip package dc-dc converter multi-country patent protection rohs product program input output voltage (vdc) current (ma) part number nominal range max* voltage (vdc) max min efficiency (%, typ) PWE4812D-3W 48 18-72 80 12 125 12 76 * input voltage over it may cause permanent damage to the device. note: the load shouldn't be less than 10%, otherwise ripple will increase dramatically. operation under 10% load will not damage the converter; however, they may not meet all specification listed . isolation specifications item test conditions min typ max units isolation voltage tested for 1 minute and 1 ma max 3000 vdc isolation resistance test at 500vdc 1000 m isolation capacitance 100 pf output specifications item test conditions min typ max units output power see above products program 0.3 3 w positive voltage accuracy refer to recommended circuit 1 3 negative voltage accuracy refer to recommended circuit 3 5 load regulation from 10% to 100% load 0.5 1* line regulation input voltage from low to high 0.2 0.5 % temperature drift(vout) refer to recommended circuit 0.03 %/ ripple & noise** 20mhz bandwidth 100 200 mvp-p switching frequency 100% load, nominal input voltage 300 khz *dual output models unbalanced load: 5%. ** test ripple and noise by parallel cable method. see detailed operation instructions at testing of power converter section, application notes. features efficiency up to 78% operating temperature: -40 c to +85 c 3000vdc isolation short circuit protection(automatic recovery) internal smd construction industry standard pinout no heat sink required mtbf>1,000,000 hours rohs compliance applications the PWE4812D-3W series are specially designed for applications where a wide range input voltage power supplies are isolated from the input power supply in a distributed power supply system on a circuit board. these products apply to: 1) where the voltage of the input power supply is wide range (voltage range 4:1); 2) where isolation is necessary between input and output (isolation 3000vdc); 3) where the regulation of the output voltage and the output ripple noise are demanded. model selection PWE4812D-3W product series input voltage output voltage package style rated power mornsun science & technology co.,ltd. address: 2th floor 6th building, huangzhou industrial district, guangzhou, china tel: 86-20-38601850 fax: 86-20-38601272 http://www.mornsun-power.com note: 1. all specifications measured at t a =25 c, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 2. see below recommended circuits for more details.
mornsun reserves the copyright specifications subject to change without notice. PWE4812D-3W a/0-2008 page 2 of 2 common specification application note item test conditions min typ max units storage humidity 95 % operating temperature -40 85 storage temperature -55 125 temp. rise at full load 40 lead temperature 1.5mm from case for 10 seconds 300 no-load power consumption 500 mw cooling free air convection short circuit protection continuous, automatic recovery case material plastic (ul94-v0) mtbf 1000 k hours weight 15 g typical temperature curve operating temp.( ) c 100 package style and pinning footprint detail note:mm(inch) pin diameter0.50mm(0.020inch) pin diameter tolerance:0.05mm(0.002inch) generaltolerance:0.25mm(0.010inch) : pin function 2,3 gnd 11 +vo 10,15 -vo 22,23 vin 9,16 0v ??? ?? ? ,: : 2.54mm(0.1inch), 1.00mm(0.039inch) ????? 2 3 9 11 2322 16 14 4.25 2.54 (0.100) (0.167) 2 0 . 3 0 ( 0 . 8 0 0 ) 31.80(1.252) ( 0 . 0 9 4 ) 4 . 1 0 9 . 5 0 ( 0 . 3 7 4 ) 2 3 9 11 14 16 22 23 nc:no connection (bottom view) (side view) nc 14 10 15 10 15 requirement on output load in order to ensure the product operate efficiently and reliably, in addition to a max load (namely full load), a minimum load is specified for this kind of dc/dc converter. make sure the specifie d range of input voltage is not exceeded, the minimum output load no less than 10% load. if the actual load is less than the specified minimum load, the output ripple may increase sharply while its efficiency and reliability will reduce greatly. if the actual output power is very small, please add an appropriate resistor as extra loading , or contact our company for other lower output power products. recommended circuit the PWE4812D-3W series have been tested according to the following recommended testing circuit before leaving factory. (see figure 1). vin gnd +vout 0v cin cout dc dc -vout cout (figure 1) if you want to further decrease the input/output ripple, you can increase capacitance properly or choose capacitors with low esr. however, the capacitance of the ou tput 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 greatest capacitance of its filter capacitor sees (table 1). general: cin: 48v 10-47 f cout: 10 f/100ma output external capacitor table (table 1) dual vout (vdc) cout (uf) 12 330 input current when it is used in unregulated power supply, be sure that the fluctuating range of the power supply and the rippled voltage do not exceed the module standard. input current of power supply should afford the startup current of this kind of dc/dc module (see figure 2), general: ip 1.4*iin-max i n p u t c u r r e n t ( a ) input voltage (v) input voltage range ip no parallel connection or plug and play.
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