2 2 d- d- n n xt xt series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 1 of 4 selection selection guid guid e e model number input voltage(vdc ) output voltage (vdc) output current (ma) input current(ma)(typ.) reflected ripple current (ma,typ.) max. capacitive load( f ) efficiency (%, typ.) @max. load nominal (range) max. min. @max . loa d @no load d050 5 0 5nx t 5(4.5-5.5) 5/5 200/200 20/20 478 32 50 100 82 d050909 nx t 5(4.5-5.5) 9/9 112/112 12/12 482 48 42 100 83 d051212 nx t 5(4.5-5.5) 12/12 84/84 9/9 483 55 32 100 84 d051515 nx t 5(4.5-5.5) 15/15 67/67 7/7 470 29 27 100 85 d120505 nx t 12(10.8-13.2) 5/5 200/200 20/20 199 19 25 100 82 d120909 nx t 12(10.8-13.2) 9/9 112/112 12/12 200 20 27 100 83 d121212 nx t 12(10.8-13.2) 12/12 84/84 9/9 198 18 24 100 84 d121515 nx t 12(10.8-13.2) 15/15 67/67 7/7 196 18 25 100 85 note: the d_ nx t-1w series also are available in our company. model model selection selection 2 2 d d 05 05 05 05 05 05 n n x x t t product series input voltage the 1st output voltage the 2nd output voltage no pin fixed input smd package microdc r eserves the copyright 2w, fixed input, isolated & unregulated twin output ultraminiature smd package dc-dc converter features features efficiency up to 85% twin independent output small footprint smd package styles no heatsink required 1kvdc isolation high power density temperature range: -40 ~ +85 no external component required internal smd construction rohs compliance applications applications the 2 d - nxt series are specially designed for applications where a group of polar 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 fixed (voltage variation 10%); 2)where isolation is necessary between input and output (isolation voltage 1000vdc); 3)where the regulation of the output voltage and the output ripple and noise are not demanding. such as:purely digital circuits,ordinary low frequency analog circuits and igbt power device driven circuits, etc. isolation isolation specifications specifications item test conditions min. typ. max. units output powe r 0.2 -- 2 w output voltage accuracy see tolerance envelope graph line regulation for vin change of 1 % -- -- 1.2 % load regulation 10% to 100% load (5v output) -- 12.8 15 % load regulation 10% to 100% load (9v output) -- 8.3 10 % load regulation 10% to 100% load (12v output) -- 6.8 10 % load regulation 10% to 100% load (15v output) -- 6.0 10 % temperature drift 100% full load -- -- 0.03 %/ ripple & noise* 20mhz bandwidth -- 75 150 mvp-p short circuit protection** -- -- 1 s note: *test ripple and noise by p arallel cable metho d. see detailed operation instructions at testing of power converter section, application notes. **supply voltage must be discontinued at the end of short circuit duration. input input specifications specifications item test conditions min. typ. max. units input surge voltage (1sec. max.) 5vdc input models -0.7 -- 9 vdc input surge voltage (1sec. max.) 12vdc input models -0.7 -- 18 vdc input filter c filter
2 2 d- d- n n xt xt series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 2 of 4 common common specifications specifications item test conditions min. typ. max. units isolation voltage(vin/vout) tested for 1 minute and leakage current less than 1 ma 1000 -- -- vdc isolation voltage(vo1/vo2) 1000 -- -- isolation resistance(vin/vout) test at 500vdc 1000 -- -- m ? isolation resistance(vo1/vo2) 1000 -- -- isolation capacitance(vin/vout) input/output,100khz/1v -- 60 -- pf isolation capacitance(vo1/vo2) -- 60 -- switching frequency full load, nominal input -- 100 -- khz mtbf mil-hdbk-217f@25 3500 -- -- k hours case material epoxy resin (ul94-v0) weight -- 2.1 -- g environmental environmental specifications specifications item test conditions min. typ. max. units storage humidity -- -- 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 cooling free air convection emc emc specifications specifications emi ce cispr22/en55022 class a e xternal circuit refer to figure1 ems esd iec/en61000-4-2 contact 8kv perf. criteria b emc emc recommended recommended circuit circuit emi recommended external circuit lass a product product typical typical curve curve
2 2 d- d- n n xt xt series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 3 of 4 outline outline dimensions dimensions ecommended ecommended footprint footprint & & packaging packaging recommended recommended footprint footprint reel reel packing packing outline outline dimensions dimensions mechanical mechanical dimensions dimensions tube tube outline outline dimensions dimensions test test configurations configurations input reflected-ripple current test setup input reflected-ripple current is measured with an inductor lin and capacitor cin to simulate source impedance. lin(4.7 h ) cin(220 f , esr < 1.0 ? at 100 khz)
2 2 d- d- n n xt xt series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 4 of 4 microdc professional power module,inc. tel:0086-20-86000646 e-mail:tech@microdc.cn website:http://www.microdc.cn rohs compliant information this series is compatible with rohs soldering systems with a peak wave solder temperature of 300 c for 10 seconds. the pin termination finish on the sip package type is tin plate, hot dipped over matte tin with nickel preplate. the dip types are matte tin over nickel preplate. both types in this series are backward compatible with sn/pb soldering systems. reach compliant information this series has proven that this product does not contain harmful chemicals, it also has harmful chemical substances through the registration, inspection and approval. design design considerations 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 products with a lower rated output power (d-nxt). 2) overload protection under normal operating conditions, the output circuit of these products has no protection against overload. the simplest method is to connect a self-recovery fuse in series at the input end or add a circuit breaker to the circuit. input fuse selection guide 3) recommended circuit if you want to further decrease the input/output ripple , a 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). 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 required. 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 nominal input voltage, full load and constant resistive load. 3. all specifications measured at ta=25 r , humidity<75%, nominal input voltage and rated output load unless otherwise specified. 4. in this datasheet, all the test methods of indications are based on our corporate standards. 5. all characteristics are for listed model only, non-standard models may perform differently, please contact our technical person for more detail. 6. contact us for your specific requirement. 7. specifications subject to change without prior notice.
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