D-NXT-2W Series 2W, FIXED INPUT, ISOLATED & UNREGULATED TWIN OUTPUT ULTRAMINIATURE SMD PACKAGE DC-DC CONVERTER SELECTION GUID Model Number D050505NXT-2W D050909NXT-2W FEATURES D051212NXT-2W ◆Efficiency up to 85% D051515NXT-2W ◆Twin Independent Output D120505NXT-2W ◆Small Footprint D120909NXT-2W Input Voltage(VDC Voltage(VDC)) Nominal (Range) Output Voltage (VDC) Output Current (mA) Input Current(mA)(typ.) Reflected Ripple Max. Min. @Max @Max.. d Loa Load @No Load Current (mA,typ.) Max. Capacitive µ F) Load( Load(µ Efficiency (%, typ.) @Max. Load 5(4.5-5.5) 5/5 200/200 20/20 478 32 50 100 82 5(4.5-5.5) 9/9 112/112 12/12 482 48 42 100 83 5(4.5-5.5) 12/12 84/84 9/9 483 55 32 100 84 5(4.5-5.5) 15/15 67/67 7/7 470 29 27 100 85 12(10.8-13.2) 5/5 200/200 20/20 199 19 25 100 82 12(10.8-13.2) 9/9 112/112 12/12 200 20 27 100 83 12(10.8-13.2) 12/12 84/84 9/9 198 18 24 100 84 12(10.8-13.2) 15/15 67/67 7/7 196 18 25 100 85 ◆SMD Package Styles D121212NXT-2W ◆No Heatsink Required D121515NXT-2W ◆1KVDC Isolation Note: The D_NXT-1W series also are available in our company. ◆High Power Density ◆Temperature Range: -40℃~ +85℃ ◆No External Component Required INPUT SPECIFICATIONS ◆Internal SMD construction ◆ RoHS Compliance Item Test Conditions Min. Typ. 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 Max. Units C Filter MODEL SELECTION D①05②05③05④N⑤X⑥ T⑦-2W⑧ ①Product Series ②Input Voltage ③The 1st Output Voltage ④The 2nd Output Voltage ⑤No Pin ⑥Fixed Input ⑦SMD Package ⑧Rated Power ISOLATION SPECIFICATIONS Item APPLICATIONS Test Conditions Min. Output Power The D_NXT-2W 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. 0.2 Output Voltage Accuracy -- Max. 2 W 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 %/℃ 20MHz Bandwidth -- 75 150 mVp-p -- -- 1 S Ripple & Noise* Note: *Test ripple and noise by “Parallel cable”method. See detailed operation instructions at Testing of Power Converter section, application notes. **Supply voltage must be discontinued at the end of short circuit duration. MICRODC reserves the copyright http://www.microdc.cn Units See tolerance envelope graph Short Circuit Protection** Such as:purely digital circuits, ordinary low frequency analog circuits and IGBT power device driven circuits, etc. Typ. Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 1 of 4 D-NXT-2W Series COMMON SPECIFICATIONS Item Isolation Voltage(Vin/Vout) Isolation Voltage(Vo1/Vo2) Isolation Resistance(Vin/Vout) Isolation Resistance(Vo1/Vo2) Isolation Capacitance(Vin/Vout) Isolation Capacitance(Vo1/Vo2) Test Conditions Tested for 1 minute and leakage current less than 1 mA Test at 500VDC Input/Output,100KHz/1V Min. Typ. Max. 1000 -- -- 1000 -- -- 1000 -- -- 1000 -- -- -- 60 -- -- 60 -- 100 -- KHz -- -- K hours Switching Frequency Full load, nominal input -- MTBF MIL-HDBK-217F@25℃ 3500 Case Material Units VDC MΩ pF Epoxy Resin (UL94-V0) Weight -- 2.1 -- g Min. Typ. Max. Units -- -- 95 % -40 -- 85 ℃ ENVIRONMENTAL SPECIFICATIONS Item Test Conditions Storage Humidity Operating Temperature Power derating (above 85℃) Storage Temperature -55 -- 125 ℃ Temp. rise at full load -- 25 -- ℃ -- 300 ℃ Lead Temperature 1.5mm from case for 10 seconds -- Cooling Free air convection EMC SPECIFICATIONS EMI CE CISPR22/EN55022 CLASS A EMS ESD IEC/EN61000-4-2 Contact External Circuit Refer to Figure1 ±8KV perf. Criteria B EMC RECOMMENDED CIRCUIT EMI Recommended External Circuit （LASS A）： PRODUCT TYPICAL CURVE http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 2 of 4 D-NXT-2W Series OUTLINE DIMENSIONS ECOMMENDED FOOTPRINT & PACKAGING RECOMMENDED FOOTPRINT MECHANICAL DIMENSIONS REEL PACKING OUTLINE DIMENSIONS TUBE OUTLINE DIMENSIONS TEST 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(4.7µH) http://www.microdc.cn Cin(220µF, ESR < 1.0Ωat 100 KHz) Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 3 of 4 D-NXT-2W Series DESIGN 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-2W). 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 overheat protection that is connected to the input or output end in series (Figure 3), filtering network with 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℃, 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. 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. Microdc Professional Power Module,Inc. Tel:0086-20-86000646 REACH COMPLIANT INFORMATION E-mail:[email protected] Website:http://www.microdc.cn http://www.microdc.cn This series has proven that this product does not contain harmful chemicals, it also has harmful chemical substances through the registration, inspection and approval. Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 4 of 4