NTA-X Series D DC-DC CONVERTER 1W, FIXED INPUT, ISOLATED DUAL OUTPUT SM SMD SELECTION GUIDE Input Order code Output Voltage(VDC) Current (mA) Nominal Rated Load NTA0303XMC 3.3 NTA0305XMC NTA0309XMC Efficiency Isolation Capacitance MTTF1 Voltage (VDC) Current (mA) (%.Typ.) pF KHrs 402 ±3.3 ±152 81 29 1005 3.3 388 ±5 ±100 83 30 399 3.3 405 ±9 ±55 74 34 827 NTA0312XMC 3.3 390 ±12 ±42 76 40 375 NTA0315XMC 3.3 392 ±15 ±33 81 42 206 NTA0503XMC 5 259 ±3.3 ±152 85 31 964 NTA0505XMC 5 290 ±5 ±100 83 33 1697 ◆High efficiency up to 78% NTA0505NXMC 5 251 ±5 ±100 86 42 367 ◆Toroidal magnetics NTA0509XMC 5 267 ±9 ±55 85 38 682 NTA0512XMC 5 260 ±12 ±42 74 44 343 NTA0515XMC 5 256 ±15 ±33 78 43 188 ◆Power density 1.36W/cm NTA1205XMC 12 121 ±5 ±100 80 50 559 ◆Lead frame technology NTA1209XMC 12 113 ±9 ±55 80 72 375 NTA1212XMC 12 111 ±12 ±42 85 89 243 NTA1215XMC 12 110 ±15 ±33 81 100 154 FEATURES ◆Footprint over pins 1.64cm 2 ◆Short Circuit Protection(automatic recovery) ◆I/O isolation voltage 1000VDC ◆Operating Temperature: -40℃～﹢85℃ ◆Small SMD package with footprint 3 ◆Multi-layer ceramic capacitors ◆Custom solutions available 1. Calculated using MIL-HDBK-217F with nominal input voltage at full load. All specifications typical at TA=25℃, nominal input voltage and rated output current unless otherwise specified. MODEL SELECTION Input Characteristics NTA①05②05③XMC④ ①Product Series ③Output Voltage Parameter ②Input Voltage ④Fixed Input&SMD Package Voltage range Conditions Min. Typ. Max. Units Continuous operation, 3V input 2.97 3.3 3.63 VDC Continuous operation, 5V input 4.5 5 5.5 VDC Continuous operation, 12V input 10.8 12 13.2 VDC 41 50 mA p-p Typ. Max. Units Start up time APPLICATIONS The NTA-X series are miniature,1W DC/DC converters with high isolation in a SMD package. With a new package design these converters are qualified for the higher temperatures requested by lead-free reflow solder processes. With the small footprint, Isolation Characteristics Parameter Conditions Min. Isolation voltage Flash tested for 1 second 1000 VDC Resistance Viso= 1000VDC 10 GΩ General Characteristics Parameter Conditions these converters are the ideal solution for board level power distribution,mainly for Switching frequency Min. Typ. Max. Units 0312, 0315 100 kHz 0303, 0305, 0503, 0505 110 kHz All other variants 115 kHz applications in the industrial and telecom field. For automated SMD production lines the devices can be supplied in standard tape and reel package. MICRODC RESERVES THE COPYRIGHT http://www.microdc.cn Absolute Maximum Ratings Parameter Conditions Lead temperature 1.5mm from case for 10 seconds 300℃ Internal power dissipation 700mW Input voltage V , NTA03 types 5.5V Input voltage Vin, NTA05 types 7V Input voltage Vin, NTA12 types 15V Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 1 of 6 NTA-X Series Output Specifications Parameter Conditions Rated Power TA=-40°C to 85°C Voltage Set Point See tolerance envelope Line regulation Min. Typ. Max. Units 1.0 W High VIN to low VIN 1.0 1.2 %% 10% load to rated load, 0303& 0503 10 15 % 10% load to rated load, 5V output types 10 12 % 10% load to rated load, 0309 9.0 10 % 10% load to rated load, 0509 & 1209 6.5 8.0 % 10% load to rated load, 0312 & 0315 11 14 % 10% load to rated load, 0512 & 1212 6.0 8.5 % 10% load to rated load, 0515 & 1215 6.0 7.0 % BW=DC to 20MHz, 3.3V output types, NTA0305 & NTA0505 40 80 mV p-p BW=DC to 20MHz, all other 5V output types 50 100 mV p-p BW=DC to 20MHz, 9V output types 35 80 mV p-p BW=DC to 20MHz, 12V output types 50 110 mV p-p BW=DC to 20MHz, 15V output types 65 110 mV p-p Typ. Load regulation1 Ripple＆Noise Note:1、12V input types have typically 3% less load regulation change. Temperature Characteristics Parameter Conditions Min. Max. Units Specification All output types -40 85 ℃ -55 125 ℃ Storage 0305, 0505, 0312, 0315 19 ℃ 0303, 0309, 0503 25 ℃ 0505, 1205 46 ℃ ambient All other variants 35 ℃ Cooling Free air convection Case temperature rise above Technical notes ISOLATION VOLTAGE ‘Hi Pot Test’、“Flash Tested’ 、”Withstand Voltage“、‘Proof Voltage” 、 “Dielectric Withstand Voltage'&'Isolation Test Voltage”are all terms that relate to the same thing, a test voltage, applied for a specified time, across a component designed to provide electrical isolation, to verify the integrity of that isolation. Professional Power Module A-XT series of DC/DC converters are all 100% production tested at their stated isolation voltage. This is 1kVDC for 1 second. A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?” For a part holding no specifi c agency approvals, such as the A-XT series, both input and output should normally be maintained within SELV limits i.e. less than 42.4V peak, or 60VDC. The isolation test voltage represents a measure of immunity to transient voltages and the part should never be used as an element of a safety isolation system. The part could be expected to function correctly with several hundred volts offset applied continuously across the isolation barrier; but then the circuitry on both sides of the barrier must be regarded as operating at an unsafe voltage and further isolation/insulation systems must form a barrier between these circuits and any user-accessible circuitry according to safety standard requirements. REPEATED HIGH-VOLTAGE ISOLATION TESTING It is well known that repeated high-voltage isolation testing of a barrier component can actually degrade isolation capability, to a lesser or greater degree depending on materials, construction and environment. The A-XT series has toroidal isolation transformers, with no additional insulation between primary and secondary windings of enameled wire. While parts can be expected to withstand several times the stated test voltage, the isolation capability does depend on the wire insulation. Any material, including this enamel (typically polyurethane) is susceptible to eventual chemical degradation when subject to very high applied voltages thus implying that the number of tests should be strictly limited. We therefore strongly advise against repeated high voltage isolation testing, but if it is absolutely required, that the voltage be reduced by 20% from specifi ed test voltage. This consideration equally applies to agency recognized parts rated for better than functional isolation where the wire enamel insulation is always supplemented by a further insulation system of physical spacing or barriers. Temperature derating graph http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 2 of 6 NTA-X Series Application Notes Minimum load The minimum load to meet data sheet speciffication is 10% of the full rated load across the speciffied input voltage range. Lower than 10% minimum loading will result in an increase in output voltage, which may rise to typically double the speciffied output voltage if the output load falls to less than 5%. Capacitive loading and start up Typical start up times for this series, with a typical input voltage rise time of 2.2μs and output capacitance of 10μF, are shown in the table below. The product series will start into a capacitance of 47μF with an increased start time, however, the maximum recommended output capacitance is 10μF. Start-up time Start-up time μs μs NTA0303XMC 1630 NTA0509XMC 6850 NTA0305XMC 1359 NTA0512XMC 11560 NTA0309XMC 3435 NTA0515XMC 15640 NTA0312XMC 6590 NTA1205XMC 1154 NTA0315XMC 25340 NTA1209XMC 4050 NTA0503XMC 1599 NTA1212XMC 7995 NTA0505XMC 2185 NTA1215XMC 11200 NTA0305NXM 1395 C Ripple & Noise Characterization Method Ripple and noise measurements are performed with the following test configu-ration. C1 1μF X7R multilayer ceramic capacitor, voltage rating to be a minimum of 3 times the output voltage of the DC/DC converter C2 10μF tantalum capacitor, voltage rating to be a minimum of 1.5 times the output voltage of the DC/DC converter with an ESR of less than 100mΩ at 100 kHz C3 100nF multilayer ceramic capacitor, general purpose R1 450Ω resistor, carbon fi lm, ±1% tolerance R2 50Ω BNC termination T1 3T of the coax cable through a ferrite toroid RLOAD Resistive load to the maximum power rating of the DC/DC converter. Connections should be made via twisted wires Measured values are multiplied by 10 to obtain the speciffied values. Differential Mode Noise Test Schematic http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 3 of 6 NTA-X Series Application Notes Output Ripple Reduction By using the values of inductance and capacitance stated, the output ripple at the rated load is lowered to 5mV p-p max. Component selection Capacitor: It is required that the ESR (Equivalent Series Resistance) should be as low as possible, ceramic types are recommended. The voltage rating should be at least twice (except for 15V output), the rated output voltage of the DC/DC converter. Inductor: The rated current of the inductor should not be less than that of the output of the DC/DC converter. At the rated current, the DC resistance of the inductor should be such that the voltage drop across the inductor is <2% of the rated voltage of the DC/DC converter. The SRF (Self Resonant Frequency) should be >20MHz. Inductor Capacitor L,μH SMD Through Hole C,μF NTA0303XMC 10 82103C 11R103C 4.7 NTA0305XMC 22 82223C 11R223C 2.2 NTA0309XMC 22 82223C 11R223C 2.2 NTA0312XMC 47 82473C 11R473C 1 NTA0315XMC 220 82474C 11R474C 0.22 NTA0503XMC 10 82103C 11R103C 4.7 NTA0505XMC 10 82103C 11R103C 4.7 NTA0305NXMC 10 82103C 11R103C 4.7 NTA0509XMC 22 82223C 11R103C 2.2 NTA0512XMC 47 82473C 11R223C 1 NTA0515XMC 220 82474C 11R473C 0.22 NTA1205XMC 10 82103C 11R474C 4.7 NTA1209XMC 22 82223C 11R223C 2.2 NTA1212XMC 47 82473C 11R473C 1 NTA1215XMC 220 82474C 11R474C 0.22 Tolerance Envelopes The voltage tolerance envelope shows typical load regulation characteristics for this product series. The tolerance envelope is the maximum output voltage variation due to changes in output loading. http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 4 of 6 NTA-X Series OUTLINE DIMENSIONS ＆ FOOTPRINT DETAILS MECHANICAL DIMENSIONS SOLDER PAD DIMENSION Dimensions in [mm], () = Inch Pin pitch tolerances: ±0.13 (±0.005) Other tolerances: ±0.25 (±0.01) TUBE OUTLINE DIMENSIONS Note: Unit:mm[inch] Pin section tolerances:±0.10mm[±0.004inch] General tolerances:±0.25mm[±0.010inch] Weight: 1.53g FOOTPRINT DETAILS Pin Dual 1 -Vin 3 +Vin 5 NA 7 0V 9 -Vout 10 NA 12 +Vout 14 NA 16 NA 18 NA Unless otherwise stated all dimensions in mm±0.5 (inches ±0.02). Tube length : 475±2.0 (18.70±0.07). Tube Quantity :25 PRODUCT ID DESCRIPTION NA - Not available for electrical connection. Specifications can be changed any time without notice. No parallel connection or plug and play. Note: 1. The load shouldn't be less than 10%, otherwise ripple will increase dramatically. 2. Operation under 10% load will not damage the converter; However, they may not meet all specification listed. 3. All specifications measured at Ta=25°C, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 4. In this data sheet, all the test methods of indications are based on corporate standards. 5. Only typical models listed, other models may be different, please contact our technical person for more details. http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 5 of 6 NTA-X Series Tape & Reel Specifications Reel Packaging Details Product Orientation Pin 1, located nearest to carrier drive sprocket. Reel Quantity : 500 Reel Outline Dimensions Tape Outline Dimensions RoHS COMPLIANT INFORMATION Microdc Professional Power Module,Inc. This series is compatible with RoHS soldering systems with a peak wave solder temperature of 300°C Tel:0086-20-86000646 E-mail:[email protected] for 10 seconds. The pin termination finish on the SIP package type is Tin Plate, Hot Dipped over Matte .microdc. cn Website: www www.microdc. .microdc.c Tin with Nickel Preplate. The DIP types are Matte Tin over Nickel Preplate. Both types in this series are Microdc Professional Power module,Inc.makes no representation that backward compatible with Sn/Pb soldering systems. the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or REACH COMPLIANT INFORMATION future patent rights. Specifications are subject to change without notice. This series has proven that this product does not contain harmful chemicals, it also has harmful chemical ©2010 Microdc Professional Power Module, Inc. Guangzhou substances through the registration, inspection and approval. http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 6 of 6