A-X(S)D-2WSeries Isolated 2W Dual Output DC/DC Converters SELECTION GUIDE Input Order code FEATURES 2 Footprint from 1.46cm ◆ I/O isolation voltage 1000VDC ◆ Operating Temperature: -40℃～﹢85℃ ◆ High efficiency up to 86% ◆ Fully encapsulated toroidal magnetics ◆ Internal SMD construction ◆ Power density up to 1.44W/cm3 ◆ No electrolytic or tantalum capacitors ◆ 5V,9V,12V and 15V output ◆ No heatsink required ◆ Dual output from a single input rail ◆ UL 94V-0 package material ◆ No external components required ◆ Industry standard pinout ◆ Power sharing on output MTTF up to 1.5 million hours MODEL SELECTION ① ② ③ ④ ⑤ ⑥ A 05 05 X S -2W ①Product Series ③Output Voltage ⑤SIP Package ②Input Voltage ④Fixed Input ⑥Rated Power Voltage Current Nominal MAX (VDC) (mA) A0505XS-2W 5 500 ±5 ±200 A0509XS-2W 5 494 ±9 ±111 A0512XS-2W 5 488 ±12 A0515XS-2W 5 476 A0518XS-2W 5 A1205XS-2W Isolation Capacitance (%.Typ.) MTTF1 pF KHrs 80 24 1574 81 28 663 ±83 82 30 338 ±15 ±67 84 33 187 465 ±18 ±55 80 36 155 12 208 ±5 ±200 80 35 490 A1209XS-2W 12 201 ±9 ±111 83 55 343 A1212XS-2W 12 198 ±12 ±83 84 63 229 A1215XS-2W 12 198 ±15 ±67 84 66 148 A1218XS-2W 12 190 ±18 ±55 82 60 138 A1505XS-2W 15 103 ±5 ±200 81 41 318 A1512XS-2W 15 98 ±12 ±111 85 75 249 A2405XS-2W 24 107 ±5 ±200 82 55 490 A2412XS-2W 24 97 ±12 ±83 86 95 183 A2415XS-2W 24 97 ±15 ±67 86 104 127 A2418XS-2W 24 95 ±18 ±55 85 108 120 A4805XS-2W 48 51 ±5 ±200 82 45 235 A4809XS-2W 48 51 ±9 ±111 82 74 195 A4812XS-2W 48 49 ±12 ±83 85 90 152 A4815XS-2W 48 49 ±15 ±67 85 112 112 A0505XD-2W 5 500 ±5 ±200 80 24 1574 A0509XD-2W 5 494 ±9 ±111 81 28 663 A0512XD-2W 5 488 ±12 ±83 82 30 338 A0515XD-2W 5 476 ±15 ±67 84 33 187 A1205XD-2W 12 208 ±5 ±200 80 35 490 A1209XD-2W 12 201 ±9 ±111 83 55 343 A1212XD-2W 12 198 ±12 ±83 84 63 229 A1215XD-2W 12 198 ±15 ±67 84 66 148 A1505XD-2W 15 103 ±5 ±200 81 41 318 A1512XD-2W 15 98 ±12 ±111 85 75 249 A2405XD-2W 24 107 ±5 ±200 80 40 157 A2412XD-2W 24 97 ±12 ±83 86 95 183 A2415XD-2W 24 97 ±15 ±67 86 104 127 A4805XD-2W 48 51 ±5 ±200 82 45 235 A4809XD-2W 48 51 ±9 ±111 82 74 195 A4812XD-2W 48 49 ±12 ±83 85 90 152 A4815XD-2W 48 49 ±15 ±67 85 112 112 1. Calculated using MIL-HDBK-217F with nominal input voltage at full load. APPLICATIONS All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified. The A-X(S)D-2W series of industrial temperature range DC/DC converters are the standard building blocks for on-board distributed power systems.They are ideally suited for providing dual rail supplies on primarily digital boards with the added benefit of galvanic isolation to reduce switching noise.All of the rated power may be drawn from a single pin provided the total load does not exceed 2 Watt. Pin compatibility with the A-X(S)D-1W series ensures minimal effort in upgrading distributed power systems. MICRODC RESERVES THE COPYRIGHT http://www.microdc.cn Efficiency Current (mA) ◆ ◆ Output Voltage(VDC) Absolute Maximum Ratings Parameter Conditions Lead temperature 1.5mm from case for 10 seconds 300℃ Internal power dissipation 300mW Input voltage V , A05 types 7V Input voltage Vin, A12 types 15V Input voltage Vin, A15 types 18V Input voltage Vin, A24 types 28V Input voltage Vin, A48 types 54V Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 1 of 4 A-X(S)D-2WSeries Input Characteristics Parameter Voltage range Conditions Min. Typ. Max. Units Continuous operation,5V input types 4.5 5 5.5 VDC Continuous operation,12V input types 10.8 12 13.2 VDC Continuous operation, 15V input types 13.5 15 16.5 VDC Continuous operation,24V input 21.6 24 26.4 VDC Continuous operation,48V input 43.2 48 52.8 5V input types Reflected ripple current VDC 50 mA p-p 12V input types 70 mA p-p 24V input types 130 mA p-p 48V input types 200 mA p-p Output Specifications Parameter Conditions Rated Power TA= -40°C to 85°C Voltage Set Point Accuracy Line regulation Min. Typ. 2.0 W -5 7.5 % All other types -5 5 % 1.2 %% 1.0 High VIN to low VIN Load regulation Ripple＆Noise Units A0505XD/A0505XS High VIN to low VIN Line regulation(A24、A48) Max. 1.2 %% 10% load to rated load, 5V output types 5 10 % 10% load to rated load, 9V output types 3 10 % 10% load to rated load,12V output types 3 10 % 10% load to rated load,15V output types 3 10 % BW=DC to 20MHz, 5V output types 150 200 mV p-p BW=DC to 20MHz, 9V output types 100 150 mV p-p BW=DC to 20MHz, 12V output types 80 150 mV p-p BW=DC to 20MHz, 15V output types 70 150 mV p-p Isolation Characteristics Parameter Conditions Min. Isolation voltage Flash tested for 1 second 1000 Typ. Resistance Viso= 500VDC 1 10 Conditions Min. Typ. Max. Units VDC GΩ General Characteristics Parameter Switching frequency Switching frequency(A24、A48) Max. Units 5V input types 95 kHz 12V input types 90 kHz 15V input types 85 kHz 24V＆48V input types 80 kHz Temperature Characteristics Parameter Conditions Min. Max. Units Specification All output types -40 Typ. 85 ℃ -50 130 ℃ Storage Case temperature rise above ambient 5V output types 30 ℃ 12V output types 25 ℃ Cooling Free air convection http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 2 of 4 A-X(S)D-2WSeries Temperature derating graph Tolerance envelope Technical notes ISOLATION VOLTAGE "Hi Pot Test","Flash Tested","Withstand 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 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 specific agency approvals, such as the A 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-acssible 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 greatre degree depending on materials. Construction and environment. The A 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 specified test voltage. This consideration equally applies to agency recognized parts for better than functional isolation where the wire enamel insulation is always supplemented by a further insulation system of physical spacing or barriers. Technical 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: Ceramic chip capacitors are recommended. It is required that the ESR(Equivalent Series Resistance)should be as low as possible.X7R 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 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. http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 3 of 4 A-X(S)D-2WSeries OUTLINE DIMENSIONS ＆ FOOTPRINT DETAILS MECHANICAL DIMENSIONS DIP Package FOOTPRINT DETAILS -14 PIN DIP SIP Package Pin Function -Vin NC 0V +Vout -Vout +Vin 1 7 8 9 11 14 -7 PIN SIP Pin Function 1 +Vin -Vin -Vout 0V +Vout 2 4 5 6 NC - Not available for electrical connection. Specifcations 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. All dimensions in inches ±0.01(mm± 0.01(mm±0.25mm).All pins on a 0.1(2.54) pitch and within ±0.01(0.25)of true position. 2. Operation under 10% load will not damage the converter; However, they may not meet all specification listed. Weight: 2.4g (DIP) 2.1g (SIP) 3. All specifications measured at Ta=25°C, 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 corporate standards. Recommended footprint details 14 PIN DIP Package 7 PIN SIP Package TUBE OUTLINE DIMENSIONS 14 PIN DIP Tube Unless otherwise stated all dimensions in inches (mm) ±0.5mm. http://www.microdc.cn Tube length (14 Pin DIP) : 20.47 (520mm ±2mm). 7 PIN SIP Tube Tube length (7 Pin SIP) : 20.47 (520mm ±2mm). Tube Quantity :25 Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 4 of 4