DC/DC Converter B_XT-W2R2 Series FEATURES 0.25W, Fixed input voltage, isolated & unregulated single output z z z z z z z z Patent Protection RoHS Continuous short circuit protection Efficiency up to 79% Operating temperature range: -40℃ to +105℃ Isolation voltage: 1.5K VDC Ultra-Low ripple & noise Miniature SMD package Internal surface mounted design International standard pin-out B_XT-W2R2 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 ≤1500VDC); 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 relay-driven circuits. Selection Guide Input Voltage (VDC) Part No. B0503XT-W2R2 B0505XT-W2R2 B1205XT- W2R2 B1212XT- W2R2 B2405XT- W2R2 Output Efficiency (%,Min./Typ.) Max. Capacitive Load (μF) Nominal Output Voltage Output Current (mA) (Range) (VDC) (Max./Min.) @ Full Load 5 (4.5-5.5) 3.3 76/8 69/74 5 50/5 74/79 12 (10.8-13.2) 24 (21.6-26.4) 5 50/5 74/79 12 21/2 74/79 5 50/5 66/71 220 Input Specifications Item Operating Conditions Input Current (full load / no-load) Surge Voltage (1sec. max.) Reflected Ripple Current Min. Typ. Max. 5V input -- 68/15 -- 12V input -- 27/10 -- 24V input -- 15/8 -- 5V input -0.7 -- 9 12V input -0.7 -- 18 24V input -0.7 -- 30 5V input -- 20 -- -- 5 -- 12V/24V input Input Filter Unit mA VDC mA Capacitor filter Output Specifications Item Operating Conditions Min. Output Voltage Accuracy Max. 3.3V output -- -- ±1.5 5V/12V output -- -- ±1.2 Line Regulation Input voltage change: ±1% Load Regulation 10%-100% load Ripple & Noise* 20MHz bandwidth Unit Temperature Drift Coefficient 100% load -- -- 3.3V output -- 15 20 5V output -- 12 15 -- 7 10 -- 10&20 -- mVp-p -- ±0.03 %/℃ 12V output Output Short Circuit Protection Typ. See tolerance envelope graph (Fig. 1) % Continuous, self-recovery Note: * Ripple and noise tested with “parallel cable” method, please see DC-DC Converter Application Notes for specific operation methods. 2014.05.22-A/1 Page 1 of 4 MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation DC/DC Converter B_XT-W2R2 Series General Specifications Item Operating Conditions Min. Isolation Voltage Input-output, with the test time of 1 minute and the leak current lower than 1mA 1500 Isolation Resistance Input-output, Isolation voltage 500VDC Isolation Capacitance Input-output, 100KHz/0.1V Operating Temperature Derating if the temperature ≥100℃ (see Fig. 2) Ta=25℃ Pin Welding Resistance Temperature Welding spot is 1.5mm away from the casing, 10 seconds Max. Unit -- -- VDC 1000 -- -- MΩ -- 20 -- pF -40 -- 105 -55 -- 125 -- 15 -- -- -- 300 Storage Temperature Casing Temperature Rise Typ. ℃ 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 -- 100 MTBF MIL-HDFK-217F@25℃ 3500 -- 95 % 300 KHz -- K hours Physical Specifications Casing Material Black flame-retardant heat-proof epoxy resin (UL94-V0) Package Dimensions 12.70*11.20*7.25 mm Weight 1.5 g (Typ.) Cooling Method Free air convection EMC Specifications EMI EMS Conducted disturbance CISPR22/EN55022 CLASS B (see Fig. 5 for recommended circuit) Radiated emission CISPR22/EN55022 CLASS B (see Fig. 5 for recommended circuit) Electrostatic discharge IEC/EN61000-4-2 Contact ±6KV perf. Criteria B Product Characteristic Curve Tolerance Envelope Graph Temperature Derating C urve Typ ic a +5% Rated Output Voltage l Lo ad C u rv e Output Power Per cent(%) +10% +2.5% Output Voltage Accuracy(%) -2.5% -7.5% 50 70 100 Output Current Percentage(%) 120 100 80 60 40 Safe Operati ng Area 20 0 -40 40 100 105 0 En vi ron ment Temp.(℃ ) (Nominal Input Voltage) Fig. 2 Fig. 1 100 Efficiency Vs Input Voltage (Full Load) 95 90 85 B0505XT-W2R2 80 75 70 65 60 Efficiency(%) 90 Efficiency(%) Efficiency Vs Output Load(Vin=5V) 100 80 B0505XT-W2R2 70 60 50 40 30 55 20 50 4.6 4.7 4.8 4.9 5 5.1 5.2 Input Voltage(V) 5.3 5.4 5.5 10 20 30 40 50 60 70 80 90 Output Current Percentage (%) 2014.05.22-A/1 100 Page 2 of 4 MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation DC/DC Converter B_XT-W2R2 Series Efficiency Vs Input Voltage (Full Load) 100 95 90 85 B1205XT-W2R2 80 75 70 65 60 Efficiency(%) 90 Efficiency(%) Efficiency Vs Output Load(Vin=12V) 100 55 B1205XT-W2R2 80 70 60 50 40 30 50 20 11.0 11.4 11.6 11.8 12.0 12.2 12.4 12.6 12.8 13.2 10 Input Voltage(V) 20 30 40 50 60 70 80 90 Output Current Percentage (%) 100 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 voltage regulator with overheat protection that is connected to the input or output end in series (see Fig. 4). Vin +Vo Vin DC C in DC C out +Vo DC DC GND GND REG REG 0V 0V Fig.4 Fig.3 Recommended capacitive load value table (Table 1) Vin(VDC) Cin(μF) Vo (VDC) Cout(μF) 5 4.7 3.3/5 10 12 2.2 12 2.2 24 1 -- -- 2. EMC typical recommended circuit LDM Vin C1 GND Input voltage (VDC) +Vo Vin DC/DC GND 0V C2 LOAD EMI 5/12/24 C1 4.7μF /50V C2 Refer to the Cout in Fig.3 LDM 6.8μH Fig. 5 3. 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. 4. For more information please find the application notes on www.mornsun-power.com 2014.05.22-A/1 Page 3 of 4 MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation DC/DC Converter B_XT-W2R2 Series Dimensions and Recommended Layout Notes: 1. Packing Information please refer to 'Product Packing Information'. Packing bag number: 58210023; 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-A/1 Page 4 of 4 MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation