A-XS-W25&b-xls-w25 A-XS-W25&b-xls-w25 A-XS-W25&b-xls-w25 A-XS-W25&b-xls-w25 A-XS-W25&b-xls-w25 A-XS-W25&b-xls-w25 A-XS-W25&b-xls-w25 A-XS-W25&b-xls-w25 series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 1 of 2 part number input output efficiency (%, typ) voltage (vdc) voltage (vdc) current (ma) nominal nominal max b0303xls-w25 3.3 3.0-3.6 3.3 75.8 62 b0305xls-w25 5 50 65 a0505xs- w25 5 4.5-5.5 5 25 62 a0509xs- w25 9 13.8 64 a0512xs- w25 12 10.4 66 a0515xs- w25 15 8.3 65 b0505xls- w25 5 50 64 b0509xls- w25 9 27.8 65 b0512 xls- w25 12 20.8 67 b0515x ls- w25 15 16.7 65 a1205xs- w25 12 10.8-13.2 5 25 62 a1209xs- w25 9 13.8 63 a1212xs- w25 12 10.4 64 a1215xs- w25 15 8.3 65 b1203x ls- w25 3.3 75.8 62 b1205 xls- w25 5 50 65 b1209 xls- w25 9 27.8 66 b1212x ls- w25 12 20.8 67 b1215x ls- w25 15 16.7 66 a2405xs- w25 24 21.6-26.4 5 25 63 a2409xs- w25 9 13.8 64 a2412xs- w25 12 10.4 65 a2415xs- w25 15 8.3 65 b2405 xls- w25 5 50 63 b2409x ls- w25 9 27.8 63 b2412 xls- w25 12 20.8 65 b2415 xls- w25 15 16.7 65 b2424xls- w25 24 10.4 64 model model model model model model model model selection selection selection selection selection selection selection selection b b b b b b b b 0 0 0 0 0 0 0 0 5 5 5 5 5 5 5 5 0 0 0 0 0 0 0 0 5 5 5 5 5 5 5 5 x x x x x x x x ls ls ls ls ls ls ls ls - - - - - - - - w w w w w w w w 25 25 25 25 25 25 25 25 product series input voltage output voltage fixed input lenthened sip pacage style rated power item test conditions min typ max units storage humidity 95 % operating temperature -40 85 storage temperature -55 125 temp. rise at full load 15 25 lead temperature 1.5mm from case for 10 seconds 300 short circuit protection* 1 s cooling free air convection case material plastic (ul94-v0) mtbf 3500 k hours weight 2.1 g *supply voltage must be discontinued at the end of short circuit duration. 0.25w, 0.25w, 0.25w, 0.25w, fixed fixed fixed fixed input, input, input, input, isolated&unregulated isolated&unregulated isolated&unregulated isolated&unregulated dual/single dual/single dual/single dual/single output output output output dc-dc dc-dc dc-dc dc-dc converter converter converter converter features features features features features features features features small footprint 1kvdc isolation sip package internal smd construction temperature range: -40 to +85 ? no heat sink required no external component required industry standard pinout applications applications applications applications applications applications applications applications microdc reserves the copyright product product product product product product product product program program program program program program program program the A-XS-W25&b-xls-w25 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 noise are not demanding. such as: purely digital circuits,ordinary low frequency analog circuits, and igbt power device driving circuits. common common common common common common common common specifications specifications specifications specifications specifications specifications specifications specifications
A-XS-W25&b-xls-w25 A-XS-W25&b-xls-w25 A-XS-W25&b-xls-w25 A-XS-W25&b-xls-w25 A-XS-W25&b-xls-w25 A-XS-W25&b-xls-w25 A-XS-W25&b-xls-w25 A-XS-W25&b-xls-w25 series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 2 of 2 application application application application application application application application note note note note note note note note requirement requirement requirement requirement on on on on output output output output load load load load to ensure this module can operate efficiently and reliably, during operation, the minimum output load is not less than 10% of the full load, and that this product should never be operated under no 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. overload overload overload overload protection protection protection 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. recommended recommended recommended recommended circuit circuit circuit circuit if you want to further decrease the input/output ripple, an "lc" filtering network may be con n ecte d to the input and output ends of the dc/dc converter, see (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 capacitance is too big, a startup problem might arise. it's not recommended to connect any external capacitor in the application field. output output output output voltage voltage voltage voltage regulation regulation regulation regulation and and and and over-voltage over-voltage over-voltage over-voltage protection protection protection protection circuit circuit circuit 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 (figure 2). no no no no parallel parallel parallel parallel connection connection connection connection or or or or plug plug plug plug and and and and play. play. play. play. isolation isolation isolation isolation isolation isolation isolation isolation specifications specifications specifications specifications specifications specifications specifications specifications item test conditions min typ max units isolation voltage tested for 1 minute and 1 ma max 1000 vdc isolation resistance test at 500vdc 1000 m output output output output output output output output specifications specifications specifications specifications specifications specifications specifications specifications item test conditions min typ max units output power 0.25 w line regulation for vin change of 1 % (3.3v input) 1.5 % (others input) 1.2 load regulation 10% to 100% load (3.3v output) 12 20 (5v output) 10.5 15 (9v output) 8.3 15 (12v output) 6.8 15 (15v output) 6.3 15 output voltage accuracy see tolerance envelope graph temperature drift 100% full load 0.03 %/ ripple & noise* 20mhz bandwidth 50 75 mvp-p switching frequency full load, nominal input 100 khz *test ripple and noise by "p arallel cable " method. see detailed operation instructions at testing . note: 1. all specifications measured at t a =25 , humidity<75%, nominal input voltage and rated output load unless otherwise specified. 2. see below recommended circuits for more details. 3. dual output models unbalanced load: 5%. typical typical typical typical typical typical typical typical characteristics characteristics characteristics characteristics characteristics characteristics characteristics characteristics outline outline outline outline outline outline outline outline dimensions dimensions dimensions dimensions dimensions dimensions dimensions dimensions & & & & & & & & pin pin pin pin pin pin pin pin connections connections connections connections connections connections connections connections
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