DC/DC Converter B_(X)T-W2 Series 0.25W, Fixed input voltage, isolated & unregulated single output FEATURES z z z z Temperature range: -40℃～+85℃ Good temperature characteristic Isolation voltage: 1K VDC SMD package z Internal surface mounted design z International standard pin-out Patent Protection RoHS B_(X)T-W2 series is specially designed for applications where an isolated voltage is required in a distributed power supply system. It is suitable for 1.Where the voltage of the input power supply is stable (voltage variation: ±10%Vin); 2.Where isolation is necessary between input and output (isolation voltage ≤1000VDC); 3.Where do not has high requirement of line regulation , load regulation and the ripple & noise of the output voltage; Such as: pure digital circuits, low frequency analog circuits, and IGBT power device driving circuits. Selection Guide Input Voltage (VDC) Part No. B0303(X)T-W2 B0305T-W2 Output Efficiency (%,Min./Typ.) Max. Capacitive Load (Max./Min.) @ Full Load (μF) 76/8 57/61 Nominal Output Voltage Output Current (mA) (Range) (VDC) 3.3 3.3 (2.97-3.63) 5 50/5 58/62 12 21/3 59/63 B0503(X)T-W2 3.3 76/8 58/62 B0505(X)T-W2 5 50/5 60/64 B0312T-W2 B0509(X)T-W2 B0512T-W2 5 (4.5-5.5) B0515T-W2 9 28/3 61/65 12 21/3 63/67 15 17/2 61/65 B0524T-W2 24 10/1 62/66 B1203T-W2 3.3 76/8 56/60 5 50/5 60/64 B1205T-W2 B1209T-W2 12 (10.8-13.2) 9 28/3 60/64 B1212T-W2 12 21/3 59/63 B2403T-W2 3.3 76/8 56/60 5 50/5 56/60 9 28/3 57/61 12 21/3 59/63 15 17/2 61/65 B2405T-W2 B2409T-W2 B2412T-W2 24 (21.6-26.4) B2415T-W2 220 Input Specifications Item Input Current (full load / no-load) Operating Conditions Min. Typ. Max. 3.3V input -- 125/50 -- 5V input -- 81/25 -- 12V input -- 35/10 -- 24V input Surge Voltage (1sec. max.) -- 18/8 -- 3.3V input -0.7 -- 6 5V input -0.7 -- 9 12V input -0.7 -- 18 24V input -0.7 -- 30 2014.05.22-B/2 Unit mA VDC Page 1 of 4 MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation DC/DC Converter B_(X)T-W2 Series Reflected Ripple Current 3.3V/5V input -- 20 -- 12V/24V input -- 5 -- Input Filter mA Capacitor filter Output Specifications Item Operating Conditions Min. Output Voltage Accuracy Typ. Max. Unit See tolerance envelope graph (Fig. 1) Input voltage change: ±1% Line Regulation Load Regulation 10%-100% load 3.3V output -- -- ±1.5 Other output -- -- ±1.2 20 3.3V output -- 15 5V output -- 12 9V output -- 9 12V output -- 8 15V output -- 7 24V output -- % 15 -- 6 Ripple & Noise* 20MHz bandwidth -- 50 75 mVp-p Temperature Drift Coefficient 100% load -- -- ±0.03 %/℃ -- 1 s Output Short Circuit Protection** -- Note: * Ripple and noise tested with “parallel cable” method, please see DC-DC Converter Application Notes for specific operation methods. ** Supply voltage must be discontinued at the end of short circuit duration. General Specifications Item Operating Conditions Min. Isolation Voltage Input-output, with the test time of 1 minute and the leak current lower than 1mA 1000 -- -- VDC Isolation Resistance Input-output, isolation voltage 500VDC 1000 -- -- MΩ Operating Temperature Derating if the temperature ≥85℃, (see Fig. 2) Storage Temperature Casing Temperature Rise Ta=25℃ Pin Welding Resistance Temperature Welding spot is 1.5mm away from the casing, 10 seconds Typ. Max. -40 -- 85 -55 -- 125 -- 15 -- -- -- 300 Unit ℃ Peak temp.≤245℃, maximum duration time≤60s at 217℃. For actual application, please refer to IPC/JEDEC J-STD-020D.1. Reflow Soldering Temperature Storage Humidity Non-condensing Switching Frequency 100% load, nominal input voltage MTBF MIL-HDFK-217F@25℃ -- -- 24V input -- 500 -- 95 Other input -- 110 -- 3500 -- -- % KHz K hours Physical Specifications Casing Material Black flame-retardant heat-proof epoxy resin (UL94-V0) Package Dimensions 12.70*11.20*6.25 mm Weight 1.4 g (Typ.) Cooling Method Free air convection Tolerance Envelope Graph +10% +5% Output Voltage Accuracy(%) Rated Output Voltage Ty p ic a l Lo ad C u rv e +2.5% -2.5% -7.5% 50 70 100 Output Current Percentage(%) (Nominal Input Voltage) Fig. 1 Output Power Per centage(%) Product Characteristic Curve Temperatu re Derating Graph 120 100 80 60 40 Safe Operati ng Area 20 0 -40 40 85 105 120 0 Ambi ent Temperature(℃ ) Fig. 2 2014.05.22-B/2 Page 2 of 4 MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation DC/DC Converter B_(X)T-W2 Series Design Reference 1. Typical application If it is required to further reduce input and output ripple, a filter capacitor can be connected to the input and output terminals, see Fig.3. Moreover, choosing suitable filter capacitor is very important, start-up problems may be caused by too large capacitance. To ensured the modules running well, the recommended capacitive load values as shown in Table 1. 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 (see Fig.4) +Vo Vin C in DC Vin DC Cout GND 0V REG REG +Vo DC DC GND 0V Fig.4 Fig.3 Recommended capacitive load value table (Table 1) Vin(VDC) 3.3/5 12 24 --- Cin(μF) 4.7 2.2 1 --- Vo (VDC) 3.3/5 9 12 15 24 Cout(μF) 10 4.7 2.2 1 0.47 2. Output load requirements To ensure the module work efficiently and reliably, during the operation, the min. output load should be no less than 10% of the full load. If the actual output power is low, please connect a resister to the output terminal in parallel, with a recommenced resistance which is 10% of the rated power, and derating is required during operation. 3. For more information please find the application notes on www.mornsun-power.com Dimensions and Recommended Layout 2014.05.22-B/2 Page 3 of 4 MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation DC/DC Converter B_(X)T-W2 Series Notes: 1. Packing Information please refer to 'Product Packing Information'. Packing bag number: 58200021; 2. If the product is operated under the min. required load, the product performance cannot be guaranteed to comply with all performance indexes in this datasheet; 3. The max. capacitive load should be tested within the input voltage range and under full load conditions; 4. Unless otherwise specified, data in this datasheet should be tested under the conditions of Ta=25°C, humidity<75% when inputting nominal voltage and outputting rated load; 5. All index testing methods in this datasheet are based on our Company’s corporate standards; 6. The performance indexes of the product models listed in this manual are as above, but some indexes of non-standard model products will exceed the above-mentioned requirements, and please directly contact our technicians for specific information; 7. We can provide product customization service; 8. Specifications of this product are subject to changes without prior notice. MORNSUN Guangzhou 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: 86-20-38601850-8801 Fax: 86-20-38601272 E-mail: [email protected] 2014.05.22-B/2 Page 4 of 4 MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation